1
|
Pariente JA, Bayat F, Blanco A, García-Martín A, Pecharromán C, Marqués MI, López C. Fano-Like Resonance from Disorder Correlation in Vacancy-Doped Photonic Crystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302355. [PMID: 37282744 DOI: 10.1002/smll.202302355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/12/2023] [Indexed: 06/08/2023]
Abstract
By preparing colloidal crystals with random missing scatterers, crystals are created where disorder is embodied as vacancies in an otherwise perfect lattice. In this special system, there is a critical defect concentration where light propagation undergoes a transition from an all but perfect reflector (for the spectral range defined by the Bragg condition), to a metamaterial exhibiting an enhanced transmission phenomenon. It is shown that this behavior can be phenomenologically described in terms of Fano-like resonances. The results show that the Fano's parameter q experiences a sign change signaling the transition from a perfect crystal exhibiting a reflectance Bragg peak, through a state where background scattering is maximum and Bragg reflectance reaches a minimum to a point where the system reenters a low scattering state recovering ordinary Bragg diffraction. A simple dipolar model considering the correlation between scatterers and vacancies is proposed and the reported evolution of the Fano-like scattering is explained in terms of the emerging covariance between the optical paths and polarizabilities and the effect of field enhancement in photonic crystal (PhC) defects.
Collapse
Affiliation(s)
- Jose Angel Pariente
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Calle Sor Juana Inés de la Cruz 3, Madrid, E-28049, Spain
| | - Farzaneh Bayat
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Calle Sor Juana Inés de la Cruz 3, Madrid, E-28049, Spain
- Department of Physics, Azarbaijan Shahid Madani University (ASMU), Tabriz, 53751-71379, Iran
| | - Alvaro Blanco
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Calle Sor Juana Inés de la Cruz 3, Madrid, E-28049, Spain
| | - Antonio García-Martín
- Instituto de Micro y Nanotecnología (IMN-CNM), Consejo Superior de Investigaciones Científicas (CSIC), Isaac Newton 8 (PTM), Tres Cantos, Madrid, E-28760, Spain
| | - Carlos Pecharromán
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Calle Sor Juana Inés de la Cruz 3, Madrid, E-28049, Spain
| | - Manuel I Marqués
- Departamento de Física de Materiales & Condensed Matter Physics Center (IFIMAC) & Nicolás Cabrera Institute, Universidad Autónoma de Madrid (UAM), Av. F. Tomás y Valiente, Madrid, 28049, Spain
| | - Cefe López
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Calle Sor Juana Inés de la Cruz 3, Madrid, E-28049, Spain
- Donostia International Physics Center, P° Manuel Lardizábal 4, San Sebastián, Guipuzcoa, 20018, Spain
| |
Collapse
|
2
|
Iida R, Mitomo H, Niikura K, Matsuo Y, Ijiro K. Two-Step Assembly of Thermoresponsive Gold Nanorods Coated with a Single Kind of Ligand. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1704230. [PMID: 29457380 DOI: 10.1002/smll.201704230] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 01/08/2018] [Indexed: 05/24/2023]
Abstract
Gold nanorods (GNRs) coated with a single kind of ligand show thermoreponsive two-step assembly to provide a hierarchical structure. The GNRs (33 nm in length × 14 nm in diameter) coated with a hexa(ethylene glycol) (HEG) derivative form side-by-side assemblies at 30 °C (TA1 ) as a steady state through dehydration. By further heating to over 40 °C (TA2 ), larger assemblies, which are composed of the side-by-side assembled units, are formed as hierarchical structures. The dehydration temperature of the HEG derivative varies depending on the free volume of the HEG unit, which corresponds to the curvature of the GNRs. Upon heating, dehydration first occurs from the ligands on the side portions with a lower curvature, and then from the ligands on the edge portions with a higher curvature. The different sized GNRs (33 × 8 and 54 × 15 nm) also show two-step assembly. Both the TA1 and TA2 are dependent on the diameter of the GNRs, but independent of their length. This result supports that the dehydration is dependent on the free volume, which corresponds to the curvature. Anisotropic assembly focusing on differences in curvature provides new guidelines for the fabrication of hierarchical structures.
Collapse
Affiliation(s)
- Ryo Iida
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-8628, Japan
| | - Hideyuki Mitomo
- Research Institute for Electronic Science, Hokkaido University, Sapporo, 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, 001-0021, Japan
| | - Kenichi Niikura
- Department of Innovative Systems Engineering, and, Graduate School of Environmental Symbiotic System Major, Nippon Institute of Technology, Miyashiro, Saitama, 345-8501, Japan
| | - Yasutaka Matsuo
- Research Institute for Electronic Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Kuniharu Ijiro
- Research Institute for Electronic Science, Hokkaido University, Sapporo, 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, 001-0021, Japan
| |
Collapse
|
3
|
Suryadharma RNS, Rockstuhl C. Predicting Observable Quantities of Self-Assembled Metamaterials from the T-Matrix of Its Constituting Meta-Atom. MATERIALS 2018; 11:ma11020213. [PMID: 29385711 PMCID: PMC5848910 DOI: 10.3390/ma11020213] [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: 01/15/2018] [Revised: 01/26/2018] [Accepted: 01/26/2018] [Indexed: 11/16/2022]
Abstract
Self-assembled metamaterials attract considerable interest as they promise to make isotropic bulk metamaterials available at low costs. The optical response of self-assembled metamaterials is derived predominantly from the response of its individual constituents, i.e., the meta-atoms. Beyond effective properties, primary experimentally observable quantities, such as specific cross-sections, are at the focus of interest as they are frequently considered when exploiting metamaterials in specific applications. This posses the challenge of predicting these observable quantities for a diluted ensemble of randomly oriented meta-atoms. Thus far, this has been achieved by either averaging the optical response of the meta-atom across all possible incident fields or by restricting the consideration to only an electric and magnetic dipolar response. This, however, is either time-consuming or imposes an unnecessary limitation. Here, we solve this problem by deriving and presenting explicit expressions for experimentally observable quantities of metamaterials made from randomly arranged and oriented meta-atoms characterized by their T-matrix.
Collapse
Affiliation(s)
- Radius N S Suryadharma
- Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, Wolfgang Gaede Str. 1, 76131 Karlsruhe, Germany.
| | - Carsten Rockstuhl
- Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, Wolfgang Gaede Str. 1, 76131 Karlsruhe, Germany.
- Institute of Nanotechnology, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
| |
Collapse
|
4
|
Wu L, Zhang W, Zhang D. Engineering Gyroid-Structured Functional Materials via Templates Discovered in Nature and in the Lab. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5004-5022. [PMID: 26291063 DOI: 10.1002/smll.201500812] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/28/2015] [Indexed: 06/04/2023]
Abstract
In search of optimal structures for functional materials fabrication, the gyroid (G) structure has emerged as a promising subject of widespread research due to its distinct symmetry, 3D interconnected networks, and inherent chiral helices. In the past two decades, researchers have made great progress fabricating G-structured functional materials (GSFMs) based on G templates discovered both in nature and in the lab. The GSFMs demonstrate extraordinary resonance when interacting with light and matter. The superior properties of GSFMs can be divided into two categories based on the dominant structural properties, namely, dramatic optical performances dominated by short-range symmetry and well-defined texture, and effective matter transport due to long-range 3D interconnections and high integrity. In this review, G templates suitable for fabrication of GSFMs are summarized and classified. State-of-the-art optical applications of GSFMs, including photonic bandgap materials, chiral devices, plasmonic materials, and matamaterials, are systematically discussed. Applications of GSFMs involved in effective electron transport and mass transport, including electronic devices, ultrafiltration, and catalysis, are highlighted. Existing challenges that may hinder the final application of GSFMS together with possible solutions are also presented.
Collapse
Affiliation(s)
- Liping Wu
- State Key Lab of Metal Matrix Composite, Shanghai Jiao Tong University, 800# Dongchuan Rd., Shanghai, 200240, China
| | - Wang Zhang
- State Key Lab of Metal Matrix Composite, Shanghai Jiao Tong University, 800# Dongchuan Rd., Shanghai, 200240, China
| | - Di Zhang
- State Key Lab of Metal Matrix Composite, Shanghai Jiao Tong University, 800# Dongchuan Rd., Shanghai, 200240, China
| |
Collapse
|
5
|
Jang JW, Park B, Nettikadan S. Generation of plasmonic Au nanostructures in the visible wavelength using two-dimensional parallel dip-pen nanolithography. NANOSCALE 2014; 6:7912-7916. [PMID: 24898191 DOI: 10.1039/c4nr00568f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The fabrication and characterization of over millimeter (mm)-scale Au plasmonic structures are reported. Fishnet structures of Au are fabricated by the "bottom-up (direct deposition of alkanethiol)" and "top-down (wet-etching of Au)" combined approach using massively parallel dip-pen nanolithography (DPN). An array of two-dimensional (2D) parallel 55,000 pens was used for the DPN writing of 1-octadecanethiol (ODT) on an Au film in an area of 10 mm × 10 mm. The plasmonic resonance of the over millimeter-scale Au fishnet structures is shown at the visible region around 500 nm, which is measured by ellipsometrical experiments and theoretical finite-difference time-domain (FDTD) calculation. It was demonstrated that massive metal plasmonic structures can be conveniently obtained by using DPN, complementary with both e-beam lithography and nanoimprint lithography.
Collapse
Affiliation(s)
- Jae-Won Jang
- Department of Physics, Pukyong National University, Busan, 608-737, Korea.
| | | | | |
Collapse
|
6
|
Salvatore S, Demetriadou A, Vignolini S, Oh SS, Wuestner S, Yufa NA, Stefik M, Wiesner U, Baumberg JJ, Hess O, Steiner U. Tunable 3D extended self-assembled gold metamaterials with enhanced light transmission. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:2713-6. [PMID: 23553887 DOI: 10.1002/adma.201300193] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 02/11/2013] [Indexed: 05/20/2023]
Abstract
The optical properties of metamaterials made by block copolymer self-assembly are tuned by structural and environmental variations. The plasma frequency red-shifts with increasing lattice constant and blue-shifts as the network filling fraction increases. Infiltration with dielectric liquids leads also to a red-shift of the plasma edge. A 300 nm-thick slab of gyroid-structured gold has a remarkable transmission of 20%.
Collapse
Affiliation(s)
- Stefano Salvatore
- Cavendish Laboratory, Department of Physics, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, UK
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Malassis L, Massé P, Tréguer-Delapierre M, Mornet S, Weisbecker P, Kravets V, Grigorenko A, Barois P. Bottom-up fabrication and optical characterization of dense films of meta-atoms made of core-shell plasmonic nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:1551-1561. [PMID: 23286375 DOI: 10.1021/la303150r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In an attempt to fabricate low index metamaterials by a bottom-up approach, meta-atoms constituted of silica-coated silver nanoparticles are assembled by a Langmuir-Schaefer technique into thin films of large area and well-controlled thickness. The silica shells ensure a constant distance between the silver cores, hence providing a constant coupling of the localized surface plasmon resonance (LSPR) of the nanoparticles in the assembled composite material. The optical response is studied by normal angle spectral reflectance measurements and by variable angle spectroscopic ellipsometry. The normal incidence data are described well in the framework of a single effective Lorentz oscillator model. The resonance of the assembled material is blue-shifted and shows no significant broadening with respect to the absorption band of the individual nanoparticles. The observation of these two effects is enabled by the core-shell structure of the meta-atoms that prevents aggregation of the metallic cores. The ellipsometry study confirms the general behavior and reveals the natural birefringence of the few-layer materials. The amplitude of the observed resonance is weaker than expected from the Maxwell-Garnett mixing rule. This well-characterized system may constitute a good model for numerical simulations.
Collapse
|
8
|
Jakšić Z, Vuković S, Matovic J, Tanasković D. Negative Refractive Index Metasurfaces for Enhanced Biosensing. MATERIALS (BASEL, SWITZERLAND) 2010; 4:1-36. [PMID: 28879974 PMCID: PMC5448475 DOI: 10.3390/ma4010001] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 12/09/2010] [Accepted: 12/20/2010] [Indexed: 11/17/2022]
Abstract
In this paper we review some metasurfaces with negative values of effective refractive index, as scaffolds for a new generation of surface plasmon polariton-based biological or chemical sensors. The electromagnetic properties of a metasurface may be tuned by its full immersion into analyte, or by the adsorption of a thin layer on it, both of which change its properties as a plasmonic guide. We consider various simple forms of plasmonic crystals suitable for this purpose. We start with the basic case of a freestanding, electromagnetically symmetrical plasmonic slab and analyze different ultrathin, multilayer structures, to finally consider some two-dimensional "wallpaper" geometries like split ring resonator arrays and fishnet structures. A part of the text is dedicated to the possibility of multifunctionalization where a metasurface structure is simultaneously utilized both for sensing and for selectivity enhancement. Finally we give an overview of surface-bound intrinsic electromagnetic noise phenomena that limits the ultimate performance of a metasurfaces sensor.
Collapse
Affiliation(s)
- Zoran Jakšić
- Center of Microelectronic Technologies and Single Crystals (CMTM), Institute of Chemistry, Technology and Metallurgy (IHTM), University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia.
| | - Slobodan Vuković
- Institute of Physics, University of Belgrade, 11080 Zemun, Serbia.
| | - Jovan Matovic
- Institute for Sensor and Actuator Systems (ISAS), Faculty of Electrical Engineering & Information Technology, Vienna University of Technology, Gusshausstrasse 27-29/366-MST, A-1040 Vienna, Austria.
| | - Dragan Tanasković
- Center of Microelectronic Technologies and Single Crystals (CMTM), Institute of Chemistry, Technology and Metallurgy (IHTM), University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia.
| |
Collapse
|
9
|
Affiliation(s)
- Jun Hyuk Moon
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Shinsu-dong, Mapo-gu, Seoul 121-742, Korea, and Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19104
| | - Shu Yang
- Department of Chemical and Biomolecular Engineering, Sogang University, 1 Shinsu-dong, Mapo-gu, Seoul 121-742, Korea, and Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19104
| |
Collapse
|
10
|
Bielawny A, Rockstuhl C, Lederer F, Wehrspohn RB. Intermediate reflectors for enhanced top cell performance in photovoltaic thin-film tandem cells. OPTICS EXPRESS 2009; 17:8439-8446. [PMID: 19434178 DOI: 10.1364/oe.17.008439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We have investigated the impact of three types of intermediate reflectors on the absorption enhancement in the top cell of micromorph tandem solar cells using rigorous diffraction theory. As intermediate reflectors we consider homogenous dielectric thin-films and 1D and 3D photonic crystals. Besides the expected absorption enhancements in cases where photonic band gaps are matched to the absorption edge of the semiconductor, our results distinguish between the impact of zero order Bragg-resonances and diffraction-based enhancement at larger lattice constants of the 3D photonic crystal. Our full-spectrum analysis permits for a quantitative prediction of the photovoltaic conversion efficiency increase of the a-Si:H top cell.
Collapse
Affiliation(s)
- Andreas Bielawny
- Institute of Physics, Martin-Luther-University of Halle-Wittenberg, Halle, Germany.
| | | | | | | |
Collapse
|
11
|
Cheng L, Cao D. Effect of tail architecture on self-assembly of amphiphiles for polymeric micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:2749-2756. [PMID: 19437695 DOI: 10.1021/la803839t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Brownian dynamics simulations were carried out to explore the self-assembly of amphiphilic copolymers composed of a linear hydrophilic head and a hydrophobic tail with different architectures. In order to investigate the effect of architecture of hydrophobic tail on self-assembling behavior, these architectures of linear, branched, starlike, and dendritic tails were selected for comparison, and the branching parameter of the tail was employed to characterize the tail architectures. The critical micelle concentration (cmc), dynamics of aggregation, aggregate distribution, gyration radius distribution, density profiles of micelle, shape anisotropy, and thermal stability were examined for the four typical types of copolymers. The calculated results reveal that the self-assembly of linear tail copolymer has the lowest cmc, and the consequently formed polymeric micelles have narrow dispersion and greater aggregate size, and the micelle is closer to spherical shape. It was found that the cmc is inversely proportional to the branching parameter. Linear tail aggregates in solution to form polymeric micelles with higher physical stability, compared to other architectures of tail. The size of polymeric micelle increases with the increase of the branching parameter of the tail, and it exhibits an exponential relationship with the branching parameter. In addition, the micelles formed from copolymers with a high branching parameter of the tail were found to have higher thermal stability. This work provides useful information on designing self-assembling systems for preparing polymeric micelles applied to drug delivery.
Collapse
Affiliation(s)
- Lisheng Cheng
- Division of Molecular and Materials Simulation, Key Laboratory of Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | | |
Collapse
|
12
|
Wohlleben W, Bartels FW, Boyle M, Leyrer RJ. Covalent and physical cross-linking of photonic crystals with 10-fold-enhanced chemomechanical stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:5627-5635. [PMID: 18399667 DOI: 10.1021/la703971h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report opal photonic crystals that are self-assembled from functional polymer particles. We randomly copolymerized functional side-chain monomers containing motifs that form homodimers or heterobridges. These include ether or methylene bridges, hydrazone bridges, acids for anhydride formation, low- T g copolymers or physical cross-links by hydrogen bonds and/or polarity. To generate particles that are monodisperse, spherical, and functionalized, we combined emulsifier-free synthesis with swelling synthesis steps. Laser diffraction from centimeter-sized beams, white-light interferometry, and atomic force microscopy demonstrates symmetry and homogeneity across the entire crystal without the loss of interstitial volume. Compared to the stability of nonfunctional particles, the stability of the crystal against immersion in water and isopropanol was enhanced from 10 to a perfect 100%. One of the successful approaches (methylene bridges from N-methylolmethacrylamid) is triggered by thermal activation, but as shown, this is operative far from the trivial regime of sintering. We demonstrate successful infiltration with and solvation of a laser-polymerizable resin, thus enabling the processing of 3D photonic waveguide structures.
Collapse
Affiliation(s)
- Wendel Wohlleben
- BASF Aktiengesellschaft, Polymer Research, 67056 Ludwigshafen, Germany
| | | | | | | |
Collapse
|
13
|
Schutzmann S, Prosposito P, Casalboni M, Venditti I, Russo MV. Spectroscopic ellipsometry on photonic crystals made by self-assembled dye-doped P(S/HEMA) nanospheres. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pssc.200777779] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
14
|
Boltasseva A, Shalaev VM. Fabrication of optical negative-index metamaterials: Recent advances and outlook. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.metmat.2008.03.004] [Citation(s) in RCA: 227] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
15
|
Kumaraguru N, Santhakumar K, Arunachalam S, Arumugham M. Synthesis, characterization and micellization behaviour of some surface active mixed-ligand complexes of cobalt(III). Polyhedron 2006. [DOI: 10.1016/j.poly.2006.05.038] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
16
|
Santhakumar K, Kumaraguru N, Arunachalam S, Arumugham MN. Kinetics and the Mechanism of Iron(II) Reduction of cis-α-halogeno(cetylamine) (triethylenetetramine)cobalt(III) Complex Ion in Aqueous Acid Medium. TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-006-0016-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
17
|
Jin C, McLachlan MA, McComb DW, De La Rue RM, Johnson NP. Template-assisted growth of nominally cubic (100)-oriented three-dimensional crack-free photonic crystals. NANO LETTERS 2005; 5:2646-50. [PMID: 16351230 DOI: 10.1021/nl051905j] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Three-dimensional (3D) photonic crystals (PhCs) are now beginning to acquire functionality via the use of dopants and heterostructures. However, the self-organized fabrication of large-area single crystals that are free of cracks and stacking faults has remained a challenge. We demonstrate a technology for the fabrication of (100)-oriented thin film 3D opal PhCs that exhibit no cracks over areas having no intrinsic size limit via a modified template-assisted colloidal self-assembly approach onto a patterned substrate. This technology potentially makes available large area regions of single photonic crystal, which can be used for optoelectronic devices.
Collapse
Affiliation(s)
- Chongjun Jin
- Department of Electronics & Electrical Engineering, University of Glasgow, Glasgow G12 8LT, Scotland, U.K
| | | | | | | | | |
Collapse
|
18
|
|