Imperial College London
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ProfessorJoaoCabral

Faculty of Engineering, Department of Chemical Engineering

Professor of Soft Matter
 
 
 
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Contact

 

+44 (0)20 7594 5571j.cabral Website

 
 
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Assistant

 

Mrs Sarah Payne +44 (0)20 7594 5567

 
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Location

 

517AACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tan:2023:10.3390/molecules28041710,
author = {Tan, A and Ahmad, Z and Vukusic, P and Cabral, JT},
doi = {10.3390/molecules28041710},
journal = {Molecules},
pages = {1--15},
title = {Multifaceted structurally coloured materials: diffraction and Total Internal Reflection (TIR) from nanoscale surface wrinkling},
url = {http://dx.doi.org/10.3390/molecules28041710},
volume = {28},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - 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.
AU  - Tan,A
AU  - Ahmad,Z
AU  - Vukusic,P
AU  - Cabral,JT
DO  - 10.3390/molecules28041710
EP  - 15
PY  - 2023///
SN  - 1420-3049
SP  - 1
TI  - Multifaceted structurally coloured materials: diffraction and Total Internal Reflection (TIR) from nanoscale surface wrinkling
T2  - Molecules
UR  - http://dx.doi.org/10.3390/molecules28041710
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000941815700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.mdpi.com/1420-3049/28/4/1710
UR  - http://hdl.handle.net/10044/1/104985
VL  - 28
ER  -
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