1
|
Sugimura R, Takamizawa T, Aoki R, Muto R, Hirokane E, Kurokawa H, Kitahara N, Miyazaki M. Influence of in-office whitening on the color matching and surface characteristics of single-shade resin composites. J ESTHET RESTOR DENT 2024. [PMID: 39003761 DOI: 10.1111/jerd.13279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 06/16/2024] [Accepted: 07/02/2024] [Indexed: 07/16/2024]
Abstract
OBJECTIVE The color matching of single-shade resin composites after in-office whitening was investigated. MATERIALS AND METHODS Four single-shade resin composites were used. A total of 35% hydrogen peroxide was used as the whitening agent. The resin composite was placed in a cavity of an artificially discolored bovine tooth. The color differences between the restoration and surrounding enamel before and after whitening were determined based on ΔE*ab, ΔE00, and ΔWID. The color stability, surface roughness (Sa), and surface gloss (GU) of the resin composite alone were also evaluated. Statistical analyses were performed using repeated-measures analysis of variance with the Tukey-Kramer test. RESULTS Based on the 50:50% of perceptibility and acceptability thresholds of ΔE*ab and ΔE00, none of the resin composite restorations were clinically acceptable before or after whitening. Regarding ΔWID, although all resin composites showed "acceptable match" in the baseline, they showed "mismatch" after the third session of whitening. Most of the resin composites alone were stable in color against whitening. CONCLUSIONS Although the single-shade resin composites failed to achieve the expected color matching on discolored teeth either before or after the whitening, the impact of the whitening on the color of the resin composite alone may be negligible.
Collapse
Affiliation(s)
- Runa Sugimura
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Toshiki Takamizawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Ryota Aoki
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Rei Muto
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Eizo Hirokane
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Hiroyasu Kurokawa
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - Nobuya Kitahara
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
- Team Tokyo Members Clinic
| | - Masashi Miyazaki
- Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| |
Collapse
|
2
|
Iravani S, Varma RS. MXenes for Bioinspired Soft Actuators: Advancements in Angle-Independent Structural Colors and Beyond. NANO-MICRO LETTERS 2024; 16:142. [PMID: 38436795 PMCID: PMC10912076 DOI: 10.1007/s40820-024-01367-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/23/2024] [Indexed: 03/05/2024]
Abstract
Soft actuators have garnered substantial attention in current years in view of their potential appliances in diverse domains like robotics, biomedical devices, and biomimetic systems. These actuators mimic the natural movements of living organisms, aiming to attain enhanced flexibility, adaptability, and versatility. On the other hand, angle-independent structural color has been achieved through innovative design strategies and engineering approaches. By carefully controlling the size, shape, and arrangement of nanostructures, researchers have been able to create materials exhibiting consistent colors regardless of the viewing angle. One promising class of materials that holds great potential for bioinspired soft actuators is MXenes in view of their exceptional mechanical, electrical, and optical properties. The integration of MXenes for bioinspired soft actuators with angle-independent structural color offers exciting possibilities. Overcoming material compatibility issues, improving color reproducibility, scalability, durability, power supply efficiency, and cost-effectiveness will play vital roles in advancing these technologies. This perspective appraises the development of bioinspired MXene-centered soft actuators with angle-independent structural color in soft robotics.
Collapse
Affiliation(s)
- Siavash Iravani
- Independent Researcher, W Nazar ST, Boostan Ave, Isfahan, Iran.
| | - Rajender S Varma
- Centre of Excellence for Research in Sustainable Chemistry, Department of Chemistry, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil.
| |
Collapse
|
3
|
Liu H, Kang G. Investigation of angle-insensitive grating color filters at periods much smaller than the wavelength of incidence. APPLIED OPTICS 2023; 62:7536-7543. [PMID: 37855524 DOI: 10.1364/ao.500600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/15/2023] [Indexed: 10/20/2023]
Abstract
We designed and simulated one-dimensional (1D) and two-dimensional (2D) reflective grating color filters inside the aluminized polyethylene (PE) film. The filters have several advantages: high angle insensitivity (up to 45° for the 1D filter, 40° for the 2D filter), high reflectance at non-resonant wavelengths, deep resonance dips, and a large color gamut. Both structures are characterized by with their grating periods being much smaller than the wavelength of incidence. A grating modal analysis was utilized to reveal the physical mechanism behind such structures that exhibit angle-insensitive spectral responses which are favored in the fields of color display and packaging.
Collapse
|
4
|
Harun-Ur-Rashid M, Jahan I, Foyez T, Imran AB. Bio-Inspired Nanomaterials for Micro/Nanodevices: A New Era in Biomedical Applications. MICROMACHINES 2023; 14:1786. [PMID: 37763949 PMCID: PMC10536921 DOI: 10.3390/mi14091786] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/14/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023]
Abstract
Exploring bio-inspired nanomaterials (BINMs) and incorporating them into micro/nanodevices represent a significant development in biomedical applications. Nanomaterials, engineered to imitate biological structures and processes, exhibit distinctive attributes such as exceptional biocompatibility, multifunctionality, and unparalleled versatility. The utilization of BINMs demonstrates significant potential in diverse domains of biomedical micro/nanodevices, encompassing biosensors, targeted drug delivery systems, and advanced tissue engineering constructs. This article thoroughly examines the development and distinctive attributes of various BINMs, including those originating from proteins, DNA, and biomimetic polymers. Significant attention is directed toward incorporating these entities into micro/nanodevices and the subsequent biomedical ramifications that arise. This review explores biomimicry's structure-function correlations. Synthesis mosaics include bioprocesses, biomolecules, and natural structures. These nanomaterials' interfaces use biomimetic functionalization and geometric adaptations, transforming drug delivery, nanobiosensing, bio-inspired organ-on-chip systems, cancer-on-chip models, wound healing dressing mats, and antimicrobial surfaces. It provides an in-depth analysis of the existing challenges and proposes prospective strategies to improve the efficiency, performance, and reliability of these devices. Furthermore, this study offers a forward-thinking viewpoint highlighting potential avenues for future exploration and advancement. The objective is to effectively utilize and maximize the application of BINMs in the progression of biomedical micro/nanodevices, thereby propelling this rapidly developing field toward its promising future.
Collapse
Affiliation(s)
- Mohammad Harun-Ur-Rashid
- Department of Chemistry, International University of Business Agriculture and Technology, Dhaka 1230, Bangladesh;
| | - Israt Jahan
- Department of Cell Physiology, Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan;
| | - Tahmina Foyez
- Department of Pharmacy, United International University, Dhaka 1212, Bangladesh;
| | - Abu Bin Imran
- Department of Chemistry, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| |
Collapse
|
5
|
Zhang W, Tian H, Liu T, Liu H, Zhao F, Li X, Wang C, Chen X, Shao J. Chameleon-inspired active tunable structural color based on smart skin with multi-functions of structural color, sensing and actuation. MATERIALS HORIZONS 2023; 10:2024-2034. [PMID: 36942615 DOI: 10.1039/d3mh00070b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tunable structural color has many potential applications in artificial camouflage, mechanical sensors, etc. Despite the extensive efforts to develop efficient tunable structural color, there is still a wide gap between the existing "passive" tuning methods and the "active" strategy found on organisms such as chameleons that can change color according to the environment. Inspired by the active tunable color system of chameleons, we propose a smart skin comprising a nanoscale hole array of photonic crystals, carbon nanotube coatings, and liquid crystal elastomers, to integrate multiple functions, i.e., structural color tunability, sensing, and actuation, in one structure. The smart skin was further coupled with an image acquisition unit (which mimics eyes to obtain colors from the environment) and a controller (which mimics the brain to process the signals transmitted from the image acquisition unit to the smart skin), to construct an active tunable structural color system. The proposed system autonomously modulates the color according to the environmental color. To validate the color tuning, color scanning from red to green to blue or vice versa is demonstrated in this work, which could certainly open up new paths to create active tunable structural color systems, and thus, push the development of structural color-based devices and systems.
Collapse
Affiliation(s)
- Weitian Zhang
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Hongmiao Tian
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Tianci Liu
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Haoran Liu
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Fabo Zhao
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Xiangming Li
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Chunhui Wang
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Xiaoliang Chen
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Jinyou Shao
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| |
Collapse
|
6
|
Roberts G, Ballew C, Zheng T, Garcia JC, Camayd-Muñoz S, Hon PWC, Faraon A. 3D-patterned inverse-designed mid-infrared metaoptics. Nat Commun 2023; 14:2768. [PMID: 37179338 PMCID: PMC10183040 DOI: 10.1038/s41467-023-38258-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 04/14/2023] [Indexed: 05/15/2023] Open
Abstract
Modern imaging systems can be enhanced in efficiency, compactness, and application through the introduction of multilayer nanopatterned structures for manipulation of light based on its fundamental properties. High transmission multispectral imaging is elusive due to the commonplace use of filter arrays which discard most of the incident light. Further, given the challenges of miniaturizing optical systems, most cameras do not leverage the wealth of information in polarization and spatial degrees of freedom. Optical metamaterials can respond to these electromagnetic properties but have been explored primarily in single-layer geometries, limiting their performance and multifunctional capacity. Here we use advanced two-photon lithography to realize multilayer scattering structures that achieve highly nontrivial optical transformations intended to process light just before it reaches a focal plane array. Computationally optimized multispectral and polarimetric sorting devices are fabricated with submicron feature sizes and experimentally validated in the mid-infrared. A final structure shown in simulation redirects light based on its angular momentum. These devices demonstrate that with precise 3-dimensional nanopatterning, one can directly modify the scattering properties of a sensor array to create advanced imaging systems.
Collapse
Affiliation(s)
- Gregory Roberts
- Kavli Nanoscience Institute and Thomas J. Watson Sr. Laboratory of Applied Physics, California Institute of Technology, 1200 E California Blvd, Pasadena, 91125, CA, USA
| | - Conner Ballew
- Kavli Nanoscience Institute and Thomas J. Watson Sr. Laboratory of Applied Physics, California Institute of Technology, 1200 E California Blvd, Pasadena, 91125, CA, USA
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr, Pasadena, 91109, CA, USA
| | - Tianzhe Zheng
- Kavli Nanoscience Institute and Thomas J. Watson Sr. Laboratory of Applied Physics, California Institute of Technology, 1200 E California Blvd, Pasadena, 91125, CA, USA
| | - Juan C Garcia
- NG Next, Northrop Grumman Corporation, 1 Space Park Drive, Redondo Beach, 90278, CA, USA
| | - Sarah Camayd-Muñoz
- Kavli Nanoscience Institute and Thomas J. Watson Sr. Laboratory of Applied Physics, California Institute of Technology, 1200 E California Blvd, Pasadena, 91125, CA, USA
- Applied Physics Laboratory, The Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, 20723, MD, USA
| | - Philip W C Hon
- NG Next, Northrop Grumman Corporation, 1 Space Park Drive, Redondo Beach, 90278, CA, USA
| | - Andrei Faraon
- Kavli Nanoscience Institute and Thomas J. Watson Sr. Laboratory of Applied Physics, California Institute of Technology, 1200 E California Blvd, Pasadena, 91125, CA, USA.
| |
Collapse
|
7
|
Wang ZL, Deng ZP, Dong X, Bai L, Wang XL, Wang YZ, Song F. A Surface Diffusion Barrier Strategy toward Water-Resistant Photonic Materials for Accurate Detection of Ethanol. ACS APPLIED MATERIALS & INTERFACES 2022; 14:30352-30361. [PMID: 35732072 DOI: 10.1021/acsami.2c04995] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photonic materials that enable visual detection of chemicals have shown great potential for wide applications in chemical, environmental, biotechnological, and food industries, but until now, using hydrophilic photonic materials for tracing water-soluble chemicals remains a major challenge due to the strong water interference. Here, we demonstrate a two-step co-assembly and subsequent surface coating strategy to develop an ethanol-sensitive and anti-water interference photonic crystal film. By using citric acid as a co-assembly phase, high ethanol sensing is realized because of the strong intermolecular affinity. By controlling the thickness of the outer polyvinyl butyral layer, selective ethanol penetration but a water barrier is enabled. Notably, the composite photonic films are free-standing, highly flexible, and controllably structurally colored. We further present using the composite film to quantitatively trace ethanol/water mixtures and potentially track drunk driving as a colorimetric sensor. The heuristic two-step modification strategy proposed in this work not only overcomes the limitation of water interference for hydrophilic colorimetric sensors but also provides references to develop more new photonic materials with water resistance that need to be applied in water/humid environments.
Collapse
Affiliation(s)
- Zi-Li Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ze-Peng Deng
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiu Dong
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lan Bai
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiu-Li Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Fei Song
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| |
Collapse
|
8
|
Ham S, Park S, Jang SW, Lee J, Ju BK, Kim H. Design of structural coloration for full-color high-definition computer-generated holograms. OPTICS EXPRESS 2022; 30:19839-19854. [PMID: 36221750 DOI: 10.1364/oe.458176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/12/2022] [Indexed: 06/16/2023]
Abstract
This paper investigates the submicron scale color filter design in the high-definition computer-generated hologram (HD-CGH). It is addressed that single pixel structural coloration is essential for full-color wide-viewing angle HD-CGH because the conventional RGB color stripe filter degrades HD-CGH image quality due to low misalignment tolerance. Considering that a submicron scale slit or hole with metallic mirror sidewalls can operate as a single pixel color filter. We propose a design of single pixel RGB plasmonic color filter (PCF) and present the feasibility of applying the proposed single pixel RGB PCF to high-definition HD-CGHs. Based on the RGB PCF platform, a 1.1 µm × 1.1 µm RGB PCF is designed and the corresponding optical characteristics of the full-color HD-CGH are analyzed.
Collapse
|
9
|
Abstract
Structural color has been regarded as an ideal alternative to pigments because of the advantages of environmental friendliness, resistance to fading, and dynamic regulation. Responsive structural color can give real-time visible feedback to external stimuli and thus has great prospects in many applications, such as displays, sensing, anticounterfeiting, information storage, and healthcare monitoring. In this Perspective, we elucidate basic concepts, controllable fabrications, and promising applications of responsive structural colors. In particular, we systematically summarize the general regulation mode of all kinds of responsive structural color systems. First, we introduce the basic chromogenic structures as well as the regulation modes of responsive structural color. Second, we present the fabrication methods of patterned structural color. Then, the promising applications of responsive structural color systems are highlighted in detail. Finally, we present the existing challenges and future perspectives on responsive structural colors.
Collapse
Affiliation(s)
- Xiaoyu Hou
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, 100049 Beijing, P.R. China
| | - Fuzhen Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, 100049 Beijing, P.R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, 100049 Beijing, P.R. China
| | - Mingzhu Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, 100049 Beijing, P.R. China
- Key Laboratory of Materials Processing and Mold of the Ministry of Education, Zhengzhou University, Zhengzhou 450002, P.R. China
| |
Collapse
|
10
|
Abstract
Unlike color dyes, structural colors only slightly fade during long-term usage. Here, structural colors were controllably achieved by constructing CoFeB photonic crystal layers on the surface of a nanoporous aluminum oxide (AAO) substrate by magnetron sputtering deposition. The resulting material showed a wide visible spectral response and achieved structural color control with a high resolution, high color purity, and saturation. The angle-dependent color changes of CoFeB@AAO films were further investigated by changing the incident light angle. The simulation results of the model are consistent with the experiments, which is significant in practical applications. This strategy may have great potential applications for solid structure color coatings, anti-counterfeiting and security, information storage, and electromagnetic sensors.
Collapse
|
11
|
Mizutani K, Takamizawa T, Ishii R, Shibasaki S, Kurokawa H, Suzuki M, Tsujimoto A, Miyazaki M. Flexural Properties and Polished Surface Characteristics of a Structural Colored Resin Composite. Oper Dent 2021; 46:E117-E131. [PMID: 34370032 DOI: 10.2341/20-154-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2020] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The aim of this study was to determine the flexural properties and surface characteristics of a structural colored resin composite after different finishing and polishing methods, in comparison to those of conventional resin composites. METHODS AND MATERIALS A structural color resin composite, Omnichroma (OM, Tokuyama Corp, Chiyoda City, Tokyo, Japan), and two comparison resin composites, Filtek Supreme Ultra (FS, 3M, St Paul, MN, USA) and Tetric EvoCeram (TE, Ivoclar Vivadent, Schaan, Liechtenstein), were used. The flexural properties of the resin composites were determined in accordance with the ISO 4049 specifications. For surface properties, 70 polymerized specimens of each resin composite were prepared and divided into seven groups of 10. Surface roughness (Sa), gloss (GU), and surface free energy (SFE) were investigated after the following finishing and polishing methods. Three groups of specimens were finished with a superfine-grit diamond bur (SFD), and three with a tungsten carbide bur (TCB). After finishing, one of the two remaining groups was polished with a one-step silicone point (CMP), and the other with an aluminum oxide flexible disk (SSD). A group ground with SiC 320-grit was set as a baseline. RESULTS The average flexural strength ranged from 116.6 to 142.3 MPa in the following order with significant differences between each value: FS > TE > OM. The average E ranged from 6.8 to 13.2 GPa in the following order with significant differences between each value: FS > TE > OM. The average R ranged from 0.77 to 1.01 MJ/mm3 in the following order: OM > FS > TE. The Sa values of the OM groups polished with CMP and SSD were found to be significantly lower than those of the other resin composites, regardless of the finishing method. The GU values appeared to be dependent on the material and the finishing method used. The OM specimens polished with SSD showed significantly higher GU values than those polished with CMP. Most of the resin composites polished with SSD demonstrated significantly higher γS values compared to the other groups. Extremely strong negative correlations between Sa and GU in the combined data from the three resin composites and each resin composite and between Sa and γS in the OM specimens were observed; GU showed a strong positive correlation with γS in the same material. CONCLUSION These findings indicate that both flexural and surface properties are material dependent. Furthermore, the different finishing and polishing methods used in this study were observed to affect the Sa, GU, and SFE of the resin composites.
Collapse
|
12
|
Saegusa M, Kurokawa H, Takahashi N, Takamizawa T, Ishii R, Shiratsuchi K, Miyazaki M. Evaluation of Color-matching Ability of a Structural Colored Resin Composite. Oper Dent 2021; 46:306-315. [PMID: 34411249 DOI: 10.2341/20-002-l] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2020] [Indexed: 11/23/2022]
Abstract
PURPOSE The present study evaluated the color-matching ability of a structural colored resin composite to compare it with resin composites employing pigments. METHODS AND MATERIALS A structural colored resin composite (Omnichroma [OMC]), a supranano-filled resin composite (Estelite ∑ Quick [ELQ]), and a nano-filled resin composite (Filtek Supreme Ultra [FSU]) were used. Each resin composite was packed into a Teflon mold and pressed down with a clear strip under a glass slide. The specimens were light irradiated through the slide with a light-emitting diode curing unit. The thickness of the specimens (n=6) was measured with a digital caliper before being transferred to distilled water and stored at 37°C for 24 hours. The measurements of the optical characteristics of the specimens on a black-and-white background were performed using a spectrophotometer. D65 (CIE D65) was used as a light source for the spectrophotometer. Measurements were repeated three times for each specimen under each color-measurement condition, and average values for three same-shade specimens were calculated. One-way analysis of variance and Tukey post hoc tests were used (α=0.05). To determine its ability to match the color of artificial teeth, each shade of resin composite was placed in a cavity before performing color measurements. Using a spectrophotometer (CMS-35F S/C) with a flexible sensor, L*, a*, and b* values were obtained. RESULTS The spectral reflectance curve of OMC showed that it reflected light wavelengths from 430-700 nm regardless of the background color and thickness of the specimens. The percentage of reflectance of ELQ decreased near wavelengths of 550-580 nm. Regarding the influence of background color on CIE L*, a*, b* values, the L* level showed significantly higher values for all tested materials with white backgrounds, and OMC was most affected by the difference in background color. However, a* values of ELQ and FSU were significantly higher with a black background than with a white background, and OMC showed a significantly higher value with a white background than with a black background. The b* values were higher with a white background than with a black background and were significantly higher for all three products, and these tendencies were much greater for ELQ and FSU. CONCLUSIONS The ability of OMC to match the color of artificial teeth showed acceptable color compatibility, regardless of the shade of the artificial teeth and the depth of the cavity. However, ELQ and FSU showed reduced color compatibility, especially for a cavity depth of 3.0 mm. Excellent color matching ability was confirmed for the structural colored resin composite OMC, resulting in reduced color differences and therefore improving the esthetic appearance of the restoration, simplifying shade matching, and compensating for any color mismatch.
Collapse
|
13
|
Xuan Z, Li J, Liu Q, Yi F, Wang S, Lu W. Artificial Structural Colors and Applications. Innovation (N Y) 2021; 2:100081. [PMID: 34557736 PMCID: PMC8454771 DOI: 10.1016/j.xinn.2021.100081] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 01/13/2021] [Indexed: 10/25/2022] Open
Abstract
Structural colors are colors generated by the interaction between incident light and nanostructures. Structural colors have been studied for decades due to their promising advantages of long-term stability and environmentally friendly properties compared with conventional pigments and dyes. Previous studies have demonstrated many artificial structural colors inspired by naturally generated colors from plants and animals. Moreover, many strategies consisting of different principles have been reported to achieve dynamically tunable structural colors. Furthermore, the artificial structural colors can have multiple functions besides decoration, such as absorbing solar energy, anti-counterfeiting, and information encryption. In the present work, we reviewed the typical artificial structural colors generated by multilayer films, photonic crystals, and metasurfaces according to the type of structures, and discussed the approaches to achieve dynamically tunable structural colors.
Collapse
Affiliation(s)
- Zhiyi Xuan
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.,Shanghai Engineering Research Center of Energy-saving Coatings, Shanghai 200083, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Junyu Li
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qingquan Liu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.,Shanghai Engineering Research Center of Energy-saving Coatings, Shanghai 200083, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Fei Yi
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shaowei Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.,Shanghai Engineering Research Center of Energy-saving Coatings, Shanghai 200083, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
| | - Wei Lu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.,Shanghai Engineering Research Center of Energy-saving Coatings, Shanghai 200083, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.,Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
| |
Collapse
|
14
|
Zhang J, Zhang J, Ou Y, Qin Y, Wen H, Dong W, Wang R, Chen S, Yu Z. Photonic Plasticines with Uniform Structural Colors, High Processability, and Self-Healing Properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007426. [PMID: 33480481 DOI: 10.1002/smll.202007426] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Despite the vast variety of colloidal superstructures available in soft matter photonics, it remains challenging to balance the trade-off between their optical microstructures and material processability. By synergizing colloidal photonics and dynamic chemistry, a type of photonic "plasticine" with characteristics of uniform structural colors, high processability, and self-healing is demonstrated. Specifically, a boronate ester bond-based macromonomer is first prepared through complexation between the diols of polyvinyl alcohol and the boronic acid group of 3-(acrylamido) phenylboronic acid in the presence of concentrated silica colloids. Upon photopolymerization, the dynamic photonic plasticine is formed in situ as the result of the crosslinking of the boronate ester bonded networks. The randomly packed colloids inside the plasticine compose the amorphous photonic crystals, giving rise to angle-independent structural colors that would not compromise during subsequent processing steps; the reversible nature of the boronate ester bonds endows the plasticine with self-adaptable and self-healing properties. Further, the plasticine is also compatible with common shaping methods, that is, cutting, molding, and carving, and thus can be facilely processed into 3D structural colored objects, holding great potentials in fields such as bio-encoding, optical filters, anti-counterfeiting, etc.
Collapse
Affiliation(s)
- Jing Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
| | - Jingjing Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
| | - Yangteng Ou
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
- Cambridge University-Nanjing Centre of Technology and Innovation, 126 Dingshan Street, Nanjing, 210046, P. R. China
| | - Yipeng Qin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
| | - Huilin Wen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
- Cambridge University-Nanjing Centre of Technology and Innovation, 126 Dingshan Street, Nanjing, 210046, P. R. China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
| | - Rui Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
| | - Ziyi Yu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, P. R. China
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| |
Collapse
|
15
|
Li L, Niu J, Shang X, Chen S, Lu C, Zhang Y, Shi L. Bright Field Structural Colors in Silicon-on-Insulator Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2021; 13:4364-4373. [PMID: 33390005 DOI: 10.1021/acsami.0c19126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Structural coloration with artificially nanostructured materials is emerging as a prospective alternative to traditional pigments for the high resolution, sustainable recycling, and long-time durability. However, achieving bright field structural colors with dielectric nanostructures remains a great challenge due to the weak scattering in an asymmetric environment. Here, we demonstrate all-dielectric bright field structural colors with diffraction-limited resolution on the silicon-on-insulator platform. The backscattering is strongly enhanced from the constructive interference between Mie resonances of individual Si antennas and Fabry-Perot resonances supported by the SiO2 layer. The fabricated colors with varying hues and saturations show strong insensitivity with respect to the interparticle spacing and, remarkably, the viewing angle under resonant conditions. Compared with creating a quasi-homogeneous environment, our strategy is solid and complementary metal-oxide semiconductor integrable, paving the way for practical applications of structural colors in nanoscale color printing, microdisplays, and imaging.
Collapse
Affiliation(s)
- Longjie Li
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, No.3 West Road, Beitucheng, Beijing 100029, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Jiebin Niu
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, No.3 West Road, Beitucheng, Beijing 100029, China
| | - Xiao Shang
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, No.3 West Road, Beitucheng, Beijing 100029, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Shengqiong Chen
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, No.3 West Road, Beitucheng, Beijing 100029, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Cheng Lu
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, No.3 West Road, Beitucheng, Beijing 100029, China
| | - Yongliang Zhang
- SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, China
| | - Lina Shi
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, No.3 West Road, Beitucheng, Beijing 100029, China
| |
Collapse
|
16
|
Kang HS, Jolly JC, Cho H, Kalpattu A, Zhang XA, Yang S. Three-Dimensional Photoengraving of Monolithic, Multifaceted Metasurfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005454. [PMID: 33169480 DOI: 10.1002/adma.202005454] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/08/2020] [Indexed: 06/11/2023]
Abstract
Metasurfaces present a potent platform to manipulate light by the spatial arrangement of sub-wavelength patterns with well-defined sizes and geometries, in thin films. Metasurfaces by definition are planar. However, it would be highly desirable to integrate metasurfaces with diverse, spatially programmed sub-wavelength features into a 3D monolith, to manipulate light within a compact 3D space. Here, a 3D photoengraving strategy is presented; that is, generation of such composite metasurfaces from a single microstructure via the irradiation of multiple interference laser beams onto different facets of the parent azopolymeric microstructure. Through "photofluidization," this technique enables independent inscription and erasing of metasurfaces onto and from individual facets of 3D monoliths with arbitrary shapes and dimensions, in a high-throughput fashion (over approximately a few cm2 at a time). By engraving discrete sub-wavelength 1D surface relief gratings of different pitches on different facets of an inverse pyramidal array, a multiplexing structure-color filter is demonstrated.
Collapse
Affiliation(s)
- Hong Suk Kang
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Jason Christopher Jolly
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Hyesung Cho
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Abhishek Kalpattu
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Xu A Zhang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Shu Yang
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| |
Collapse
|
17
|
Jiang L, Kim KJ, Reininger FM, Jiguet S, Pau S. Microfabrication of a color filter array utilizing colored SU-8 photoresists. APPLIED OPTICS 2020; 59:G137-G145. [PMID: 32749326 DOI: 10.1364/ao.391579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Patterned color filter arrays are important components in digital cameras, camcorders, scanners, and multispectral detection and imaging instruments. In addition to the rapid and continuous progress to improve camera resolution and the efficiency of imaging sensors, research into the design of color filter arrays is important to extend the imaging capability beyond conventional applications. This paper reports the use of colored SU-8 photoresists as a material to fabricate color filter arrays. Optical properties, fabrication parameters, and pattern spatial resolution are systematically studied for five color photoresists: violet, blue, green, yellow, and red. An end-to-end fabrication process is developed to realize a five-color filter array designed for a wide angle multiband artificial compound eye camera system for pentachromatic and polarization imaging. Colored SU-8 photoresists present notable advantages, including patternability, color tunability, low-temperature compatibility, and process simplicity. The results regarding the optical properties and the fabrication process for a colored SU-8 photoresist provide significant insight into its usage as an optical material to investigate nonconventional color filter designs.
Collapse
|
18
|
Zhang L, Li M, Lyu Q, Zhu J. Bioinspired structural color nanocomposites with healable capability. Polym Chem 2020. [DOI: 10.1039/d0py01096k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This minireview summarizes the recent development of healable structural color nanocomposites from the perspective of the construction strategies.
Collapse
Affiliation(s)
- Lianbin Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST)
- and State Key Laboratory of Materials Processing and Die & Mold Technology
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Miaomiao Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST)
- and State Key Laboratory of Materials Processing and Die & Mold Technology
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Quanqian Lyu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST)
- and State Key Laboratory of Materials Processing and Die & Mold Technology
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Jintao Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST)
- and State Key Laboratory of Materials Processing and Die & Mold Technology
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| |
Collapse
|
19
|
Chan JYE, Ruan Q, Ng RJH, Qiu CW, Yang JKW. Rotation-Selective Moiré Magnification of Structural Color Pattern Arrays. ACS NANO 2019; 13:14138-14144. [PMID: 31790192 DOI: 10.1021/acsnano.9b06772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
When a microlens array is aligned and overlaid on an array of patterns with similar periodicity, a highly magnified image of the patterns is observed. This effect, known as moiré magnification, is used to reveal micropatterns that are unresolvable by the naked eye. These patterns are typically limited by print resolution to single color patterns. Here, we demonstrate the potential to selectively reveal more than one set of color patterns. By rotating a microlens array relative to a print containing three overlapping arrays of structural color patterns in 10° steps, each pattern array can be distinctly revealed with minimal crosstalk. This rotation-selective effect of moiré magnification is not seen in conventional microscopy. An advantage is that the moiré images are observable by the naked eye under incoherent illumination. We leverage nanoscale three-dimensional printing by using the two-photon lithography process to produce structural color pattern arrays in a single lithographic step with precisely aligned color pixels. We believe that this work can have applications in precise rotational-alignment tools, covert security documents, and information multiplexing devices.
Collapse
Affiliation(s)
- John You En Chan
- Engineering Product Development , Singapore University of Technology and Design , Singapore 487372 , Singapore
| | - Qifeng Ruan
- Engineering Product Development , Singapore University of Technology and Design , Singapore 487372 , Singapore
| | - Ray Jia Hong Ng
- Engineering Product Development , Singapore University of Technology and Design , Singapore 487372 , Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering , National University of Singapore , Singapore 117583 , Singapore
| | - Joel K W Yang
- Engineering Product Development , Singapore University of Technology and Design , Singapore 487372 , Singapore
- Nanofabrication Department , Institute of Materials Research and Engineering , Singapore 138634 , Singapore
| |
Collapse
|
20
|
Ghobadi A, Hajian H, Butun B, Ozbay E. Strong Interference in Planar, Multilayer Perfect Absorbers: Achieving High-Operational Performances in Visible and Near-Infrared Regimes. IEEE NANOTECHNOLOGY MAGAZINE 2019. [DOI: 10.1109/mnano.2019.2916113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
21
|
Greybush NJ, Charipar K, Geldmeier JA, Bauman SJ, Johns P, Naciri J, Charipar N, Park K, Vaia RA, Fontana J. Dynamic Plasmonic Pixels. ACS NANO 2019; 13:3875-3883. [PMID: 30794377 DOI: 10.1021/acsnano.9b00905] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Information display utilizing plasmonic color generation has recently emerged as an alternative paradigm to traditional printing and display technologies. However, many implementations so far have either presented static pixels with a single display state or rely on relatively slow switching mechanisms such as chemical transformations or liquid crystal transitions. Here, we demonstrate spatial, spectral, and temporal control of light using dynamic plasmonic pixels that function through the electric-field-induced alignment of plasmonic nanorods in organic suspensions. By tailoring the geometry and composition (Au and Au@Ag) of the nanorods, we illustrate light modulation across a significant portion of the visible and infrared spectrum (600-2400 nm). The fast (∼30 μs), reversible nanorod alignment is manifested as distinct color changes, characterized by shifts of observed chromaticity and luminance. Integration into larger device architectures is showcased by the fabrication of a seven-segment numerical indicator. The control of light on demand achieved in these dynamic plasmonic pixels establishes a favorable platform for engineering high-performance optical devices.
Collapse
Affiliation(s)
- Nicholas J Greybush
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| | - Kristin Charipar
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| | - Jeffrey A Geldmeier
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| | - Stephen J Bauman
- University of Arkansas Fayetteville , 3189 Bell, 1 University of Arkansas, 800 West Dickson , Fayetteville , Arkansas 72701 , United States
| | - Paul Johns
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| | - Jawad Naciri
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| | - Nicholas Charipar
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| | - Kyoungweon Park
- Air Force Research Laboratory , AFRL 2941 Hobson Way , Wright-Patterson AFB , Ohio 45433 , United States
| | - Richard A Vaia
- Air Force Research Laboratory , AFRL 2941 Hobson Way , Wright-Patterson AFB , Ohio 45433 , United States
| | - Jake Fontana
- United States Naval Research Laboratory , 4555 Overlook Ave, SW , Washington , DC 20375 , United States
| |
Collapse
|
22
|
Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters. MATERIALS 2019; 12:ma12071050. [PMID: 30935003 PMCID: PMC6479600 DOI: 10.3390/ma12071050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/20/2019] [Accepted: 03/25/2019] [Indexed: 11/17/2022]
Abstract
We propose a design of angle-insensitive and polarization-independent reflective color filters with high efficiency (>80%) based on broad resonance in a Fabry–Pérot cavity where asymmetric metal-dielectric-metal planar structures are employed. Broadband absorption properties allow the resonance in the visible range to remain nearly constant over a broad range of incident angles of up to 40° for both s- and p-polarizations. Effects of the angles of incidence and polarization state of incident light on the purity of the resulting colors are examined on the CIE 1931 chromaticity diagram. In addition, higher-order resonances of the proposed color filters and their electric field distributions are investigated for improved color purity. Lastly, the spectral properties of the proposed structures with different metallic layers are studied. The simple strategy described in this work could be adopted in a variety of research areas, such as color decoration devices, microscopy, and colorimetric sensors.
Collapse
|
23
|
Ghobadi A, Hajian H, Soydan MC, Butun B, Ozbay E. Lithography-Free Planar Band-Pass Reflective Color Filter Using A Series Connection of Cavities. Sci Rep 2019; 9:290. [PMID: 30670767 PMCID: PMC6342952 DOI: 10.1038/s41598-018-36540-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 11/23/2018] [Indexed: 12/03/2022] Open
Abstract
In this article, a lithography-free multilayer based color filter is realized using a proper series connection of two cavities that shows relatively high efficiency, high color purity, and a wide view angle. The proposed structure is a metal-insulator-metal-insulator-semiconductor (MIMIS) design. To optimize the device performance, at the first step, transfer matrix method (TMM) modeling is utilized to find the right choices of materials for each layer. Simulations are carried out later on to optimize the geometries of the layers to obtain our desired colors. Finally, the optimized devices are fabricated and experimentally characterized to evaluate our modelling findings. The characterization results of the fabricated samples prove the successful formation of efficient and wide view angle color filters. Unlike previously reported FP based designs that act as a band-stop filter in reflection mode (absorbing a narrow frequency range and reflecting the rest of the spectrum), this design generates a specific color by reflecting a narrow spectral range and absorbing the rest of the spectrum. The findings of this work can be extended to other multilayer structures where an efficient connection of cavities in a tandem scheme can propose functionalities that cannot be realized with conventional FP resonators.
Collapse
Affiliation(s)
- Amir Ghobadi
- NANOTAM - Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey. .,Department of Electrical and Electronics Engineering, Bilkent University, Ankara, 06800, Turkey.
| | - Hodjat Hajian
- NANOTAM - Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Mahmut Can Soydan
- NANOTAM - Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey.,Department of Electrical and Electronics Engineering, Bilkent University, Ankara, 06800, Turkey
| | - Bayram Butun
- NANOTAM - Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
| | - Ekmel Ozbay
- NANOTAM - Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey. .,Department of Electrical and Electronics Engineering, Bilkent University, Ankara, 06800, Turkey. .,UNAM-National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey. .,Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey. .,Department of Physics, Bilkent University, Ankara, 06800, Turkey.
| |
Collapse
|
24
|
THz Sensing With Anomalous Extraordinary Optical Transmission Hole Arrays. SENSORS 2018; 18:s18113848. [PMID: 30423974 PMCID: PMC6263774 DOI: 10.3390/s18113848] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/05/2018] [Accepted: 11/06/2018] [Indexed: 11/24/2022]
Abstract
Subwavelength hole array (HA) metasurfaces support the so-called extraordinary optical transmission (EOT) resonance that has already been exploited for sensing. In this work, we demonstrate the superior performance of a different resonant regime of HA metasurfaces called anomalous EOT, by doing a thorough numerical and experimental study of its ability in thin-film label-free sensing applications in the terahertz (THz) band. A comprehensive analysis using both the regular and anomalous EOT resonances is done by depositing thin layers of dielectric analyte slabs of different thicknesses on the structures in different scenarios. We carry out a detailed comparison and demonstrate that the best sensing performance is achieved when the structure operates in the anomalous EOT resonance and the analyte is deposited on the non-patterned side of the metasurface, improving by a factor between 2 and 3 the results of the EOT resonance in any of the considered scenarios. This can be explained by the comparatively narrower linewidth of the anomalous EOT resonance. The results presented expand the reach of subwavelength HAs for sensing applications by considering the anomalous EOT regime that is usually overlooked in the literature.
Collapse
|
25
|
Liquid Crystal Enabled Dynamic Nanodevices. NANOMATERIALS 2018; 8:nano8110871. [PMID: 30360573 PMCID: PMC6265771 DOI: 10.3390/nano8110871] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/13/2018] [Accepted: 10/20/2018] [Indexed: 01/31/2023]
Abstract
Inspired by the anisotropic molecular shape and tunable alignment of liquid crystals (LCs), investigations on hybrid nanodevices which combine LCs with plasmonic metasurfaces have received great attention recently. Since LCs possess unique electro-optical properties, developing novel dynamic optical components by incorporating nematic LCs with nanostructures offers a variety of practical applications. Owing to the large birefringence of LCs, the optical properties of metamaterials can be electrically or optically modulated over a wide range. In this review article, we show different elegant designs of metasurface based nanodevices integrated into LCs and explore the tuning factors of transmittance/extinction/scattering spectra. Moreover, we review and classify substantial tunable devices enabled by LC-plasmonic interactions. These dynamically tunable optoelectronic nanodevices and components are of extreme importance, since they can enable a significant range of applications, including ultra-fast switching, modulating, sensing, imaging, and waveguiding. By integrating LCs with two dimensional metasurfaces, one can manipulate electromagnetic waves at the nanoscale with dramatically reduced sizes. Owing to their special electro-optical properties, recent efforts have demonstrated that more accurate manipulation of LC-displays can be engineered by precisely controlling the alignment of LCs inside small channels. In particular, device performance can be significantly improved by optimizing geometries and the surrounding environmental parameters.
Collapse
|
26
|
Metal-Based Graphical SiO₂/Ag/ZnS/Ag Hetero-Structure for Visible-Infrared Compatible Camouflage. MATERIALS 2018; 11:ma11091594. [PMID: 30177599 PMCID: PMC6164464 DOI: 10.3390/ma11091594] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 08/30/2018] [Accepted: 08/30/2018] [Indexed: 11/23/2022]
Abstract
A brand-new approach to realizing visible-infrared compatible camouflage is proposed based on a metal-based graphical hetero-structure (MGHS) SiO2/Ag/ZnS/Ag. For different thicknesses (20, 40, and 60 nm) of color-controlling sub-layer, high-contract and large-span structure colors (yellow, navy, and cyan) were observed due to reintroducing constructive interference with a matching intensity of reflected waves. Ultra-low infrared emissivity values of 0.04, 0.05, and 0.04 (with high average reflectance values of 95.46%, 95.31%, and 95.09%) were obtained at 3–14 μm. In addition, the well-performing trisecting-circle structure further indicates that it is feasible to design on-demand compatible camouflage patterns using the easily-prepared MGHS.
Collapse
|
27
|
Active Color Control in a Metasurface by Polarization Rotation. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8060982] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|