Chirality of Fingerprints: Pattern- and Curvature-Induced Emerging Chiroptical Properties of Elastomeric Grating Meta-Skin

Autor:	Ki-Jae Jeong, Juyong Gwak, Caifeng Wang, Young-Mi Kim, Van Tan Tran, Jaebeom Lee
Rok vydání:	2022
Předmět:	General Engineering General Physics and Astronomy General Materials Science Gold Skin Nanostructures
Zdroj:	ACS Nano. 16:6103-6110
ISSN:	1936-086X 1936-0851
Popis:	Fingerprint-inspired elastomeric grating meta-skin (EGMS) is herein fabricated to investigate the chirality of fingerprints. The EGMS is made by a facile nanoimprinting method with a diffraction grating as a template using polydimethylsiloxane, followed by gold deposition. The chirality of the surface is caused by symmetry breaking, induced by the pattern (biP/i/b) and curvature (biT/i/b). Furthermore, the chiroptical properties of EGMS are reconfigurable through the control of the skew angle (θ), which is the angle betweenbiP/i/bandbiT/i/b. The chiroptical properties of a fingerprint are also shown and interpreted in this perspective. On the basis of the results, we suggest the strategy to impart chirality on the surface, which is reconfigurable by controllingbiP/i/bandbiT/i/b. It will be a useful method to produce chirality in membranes, thin films, metasurfaces, and 2D nanomaterials, as well as advance biometric recognition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8528b8817eef30ae1ac3493857270f1a https://doi.org/10.1021/acsnano.1c11597 Zobrazit plný text záznamu