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Wang Q, Wang W, Lu C, Hu L, Ni Y, Yu S. Retraction of "Three-Axial Strain-Triggered Multimode Wrinkles with Tuneable Frictional and Optical Performances". ACS APPLIED MATERIALS & INTERFACES 2023; 15:45538. [PMID: 37390007 DOI: 10.1021/acsami.3c06867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
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Multifaceted Structurally Coloured Materials: Diffraction and Total Internal Reflection (TIR) from Nanoscale Surface Wrinkling. Molecules 2023; 28:molecules28041710. [PMID: 36838698 PMCID: PMC9962751 DOI: 10.3390/molecules28041710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
We investigate the combined effects of surface diffraction and total internal reflection (TIR) in the design of 3-dimensional materials exhibiting distinct structural colour on various facets. We employ mechanical wrinkling to introduce surface diffraction gratings (from the nano to the micron scales) on one face of an elastomeric rectangular parallelepiped-shaped slab and explore the roles, in the perceived colours, of wrinkling pattern, wavelength, the directionality of incident light and observation angles. We propose a simple model that satisfactorily accounts for all experimental observations. Employing polydimethylsiloxane (PDMS), which readily swells in the presence of various liquids and gases, we demonstrate that such multifaceted colours can respond to their environment. By coupling a right angle triangular prism with a surface grating, we demonstrate the straightforward fabrication of a so-called GRISM (GRating + prISM). Finally, using a range of examples, we outline possibilities for a predictive material design using multi-axial wrinkling patterns and more complex polyhedra.
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Lim SI, Jang E, Yu D, Koo J, Kang DG, Lee KM, Godman NP, McConney ME, Kim DY, Jeong KU. When Chirophotonic Film Meets Wrinkles: Viewing Angle Independent Corrugated Photonic Crystal Paper. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2206764. [PMID: 36314392 DOI: 10.1002/adma.202206764] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Light manipulation strategies of nature have fascinated humans for centuries. In particular, structural colors are of considerable interest due to their ability to control the interaction between light and matter. Here, wrinkled photonic crystal papers (PCPs) are fabricated to demonstrate the consistent reflection of colors regardless of viewing angles. The nanoscale molecular self-assembly of a cholesteric liquid crystal (CLC) with a microscale corrugated surface is combined. Fully polymerizable CLC paints are uniaxially coated onto a wrinkled interpenetrating polymer network (IPN) substrate. Photopolymerization of the helicoidal nanostructures results in a flexible and free-standing PCP. The facile method of fabricating the wrinkled PCPs provides a scalable route for the development of novel chirophotonic materials with precisely controlled helical pitch and curvature dimensions. The reflection notch position of the flat PCP shifts to a lower wavelength when the viewing angle increased, while the selective reflection wavelength of wrinkled PCP is remained consistent regardless of viewing angles. The optical reflection of the 1D stripe-wrinkled PCP is dependent on the wrinkle direction. PCPs with different corrugated directions can be patterned to reduce the angular-dependent optical reflection of wrinkles. Furthermore, 2D wavy-wrinkled PCP is successfully developed that exhibit directionally independent reflection of color.
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Affiliation(s)
- Seok-In Lim
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Eunji Jang
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Dongmin Yu
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Jahyeon Koo
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Dong-Gue Kang
- Functional Composite Materials Research Center, Korea Institute of Science and Technology, Wanju, 55324, Republic of Korea
| | - Kyung Min Lee
- US Air Force Research Laboratory Wright-Patterson Air Force Base, Dayton, Ohio, 45433, USA
| | - Nicholas P Godman
- US Air Force Research Laboratory Wright-Patterson Air Force Base, Dayton, Ohio, 45433, USA
| | - Michael E McConney
- US Air Force Research Laboratory Wright-Patterson Air Force Base, Dayton, Ohio, 45433, USA
| | - Dae-Yoon Kim
- Functional Composite Materials Research Center, Korea Institute of Science and Technology, Wanju, 55324, Republic of Korea
| | - Kwang-Un Jeong
- Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
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Pellegrino L, Kriem LS, Robles ESJ, Cabral JT. Microbial Response to Micrometer-Scale Multiaxial Wrinkled Surfaces. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31463-31473. [PMID: 35699282 PMCID: PMC9284519 DOI: 10.1021/acsami.2c08768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigate the effect of micrometer-scale surface wrinkling on the attachment and proliferation of model bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli K12) and fungi (Candida albicans). Specifically, sinusoidal (1D), checkerboard (C), and herringbone (H) patterns were fabricated by mechanical wrinkling of plasma-oxidized polydimethylsiloxane (PDMS) bilayers and contrasted with flat (F) surfaces. Microbial deformation and orientation were found to correlate with the aspect ratio and commensurably with surface pattern dimensions and local pattern order. Significantly, the proliferation of P. aeruginosa could be described by a linear scaling between bacterial area coverage and available surface area, defined as a fraction of the line integral along each profile with negative curvature. However, in the early stages of proliferation (up to 6 h examined), that C and H patterns disrupt the spatial arrangement of bacteria, impeding proliferation for several hours and reducing it (by ∼50%) thereafter. Our findings suggest a simple framework to rationalize the impact of micrometer-scale topography on microbial action and demonstrate that multiaxial patterning order provides an effective strategy to delay and frustrate the early stages of bacterial proliferation.
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Affiliation(s)
- Luca Pellegrino
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
| | - Lukas Simon Kriem
- Fraunhofer
Institute for Interfacial Engineering and Biotechnology IGB, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Eric S. J. Robles
- Procter
& Gamble, Newcastle Innovation Centre, Newcastle upon Tyne NE12
9TS, United Kingdom
| | - João T. Cabral
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
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Pellegrino L, Tan A, Cabral JT. Ripple Patterns Spontaneously Emerge through Sequential Wrinkling Interference in Polymer Bilayers. PHYSICAL REVIEW LETTERS 2022; 128:058001. [PMID: 35179945 DOI: 10.1103/physrevlett.128.058001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
We report the formation of "ripple" patterns by the sequential superposition of nonorthogonal surface waves excited by the spontaneous buckling of polymeric bilayers. Albeit of a different nature and micron scale compared to the familiar sedimentary ripples caused by gentle wave oscillations, we find commonalities in their topography, defects, and bifurcations. The patterns are rationalized in terms of a defect density that depends on the relative angle between generations, and a constant in-plane bending angle that depends on skin thickness. A minimal wave summation model enables the design of ripple and checkerboard surfaces by tuning material properties and fabrication process.
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Affiliation(s)
- Luca Pellegrino
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Annabelle Tan
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - João T Cabral
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
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Lee H, Chae S, Yi A, Kim HJ. Hydrophobic stretchable polydimethylsiloxane films with wrinkle patterns prepared via a metal‐assisted chemical etching process using a Si master mold. J Appl Polym Sci 2020. [DOI: 10.1002/app.50398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Hanbin Lee
- School of Chemical Engineering Pusan National University Busan Republic of Korea
| | - Sangmin Chae
- School of Chemical Engineering Pusan National University Busan Republic of Korea
| | - Ahra Yi
- School of Chemical Engineering Pusan National University Busan Republic of Korea
| | - Hyo Jung Kim
- School of Chemical Engineering Pusan National University Busan Republic of Korea
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