MRS Meetings and Events

 

SF05.08.03 2023 MRS Fall Meeting

Multispectral Camouflage Surfaces Inspired by Cephalopods

When and Where

Nov 28, 2023
4:00pm - 4:15pm

Sheraton, Third Floor, Hampton

Presenter

Co-Author(s)

Yinuan Liu1,Zhijing Feng1,Chengyi Xu1,Atrouli Chatterjee1,Alon Gorodetsky1

University of California, Irvine1

Abstract

Yinuan Liu1,Zhijing Feng1,Chengyi Xu1,Atrouli Chatterjee1,Alon Gorodetsky1

University of California, Irvine1
Wrinkled surfaces and materials are found throughout the natural world in various plants and animals and are known to improve the performance of emerging optical and electrical technologies. Despite much progress, the reversible post-fabrication tuning of wrinkle sizes and geometries across multiple length scales has remained relatively challenging for some materials, and the development of comprehensive structure−function relationships for optically active wrinkled surfaces has often proven difficult. Herein, by drawing inspiration from natural cephalopod skin and leveraging methodologies established for artificial adaptive infrared platforms, we engineer systems with hierarchically reconfigurable wrinkled surface morphologies and dynamically tunable visible-to-infrared spectroscopic properties. Specifically, we demonstrate architectures for which mechanical actuation changes the surface morphological characteristics; modulates the reflectance, transmittance, and absorptance across a broad spectral window; controls the specular-to-diffuse reflectance ratios; and alters the visible and thermal appearances. Moreover, we demonstrate the incorporation of these architectures into analogous electrically actuated appearance-changing devices that feature competitive figures of merit, such as reasonable maximum areal strains, rapid response times, and good stabilities upon repeated actuation. Overall, our findings constitute another step forward in the continued development of cephalopod-inspired light- and heat-manipulating systems and may facilitate advanced applications in the areas of sensing, electronics, optics, soft robotics, and thermal management.

Keywords

infrared (IR) spectroscopy | multiscale

Symposium Organizers

Pierre-Olivier Chapuis, CNRS - INSA Lyon
Philip Hon, Northrop Grumman Corporation
Georgia Papadakis, ICFO – Institute of Photonic Sciences
Bo Zhao, University of Houston

Publishing Alliance

MRS publishes with Springer Nature