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Title: Diphylleia grayi inspired stretchable hydrochromics with large optical Modulation in visible-near infrared region
Authors: Cai, Guafa
Wang, Jiangxin
Eh, Alice Lee-Sie
Chen, Jingwei
Qian, Kai
Xiong, Jiaqing
Thangavel, Gurunathan
Lee, Pooi-See
Keywords: Science::Chemistry
Issue Date: 2018
Source: Cai, G., Wang, J., Eh, A. L.-S., Chen, J., Qian, K., Xiong, J., . . ., Lee, P.-S. (2018). Diphylleia grayi inspired stretchable hydrochromics with large optical Modulation in visible-near infrared region. ACS Applied Materials & Interfaces, 10(43), 37685-37693. doi:10.1021/acsami.8b12490
Journal: ACS Applied Materials & Interfaces
Abstract: Some animals and plants in nature are endowed with elegant color-changing ability, which inspired the developments of biomimetic systems with multifunctionality, such as controllable colors, transmittance, and mechanical pliability that are significant for the development of energy-efficient and deformable chromic devices, such as wearable displays, smart windows, decorative architectures, camouflage devices, etc. Inspired by the color-changing ability of diphylleia grayi (commonly known as skeleton flower), we developed a porous PDMS film that dynamically and dramatically changes its color by the adsorption/desorption of minute amount of water (5 g m-2) or other solvents. This hydrochromic phenomenon was analyzed in detail and it matched well with the Mie scattering theory. The porous PDMS film of about 0.4 mm thick exhibits a large optical modulation (about 75~80%) in the broad visible and near infrared region and coloration speed of less than 9 mins. Additionally, the PDMS film can sustain uniaxial strain up to 100% at both transparent and colored states. We believe this new strategy to develop highly scalable porous PDMS film offers a practical route to realize bionic and botanic inspired deformable energy-efficient façade, chromogenic wearables, smart window, smart display, and camouflage etc.
ISSN: 1944-8244
DOI: 10.1021/acsami.8b12490
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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