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Proceedings Paper

Aluminum plasmonics for self cleaning surfaces: Complete inactivation of multidrug-resistant bacteria with low-intensity visible light (Conference Presentation)

Paper Abstract

405 nm light is emerging as a safe alternative to UV light for light-based continuous inactivation of drug resistant bacteria in high risk environments (i.e., hospitals). LED manufacturers are introducing 405-nm room lighting solutions for this purpose. However, inactivation efficiencies of commercial 405-nm technologies are still few orders of magnitude lower than those of UV light. Here, we achieve light 500-fold increased inactivation efficiencies with 405-nm light using radiatively coupled aluminum plasmonic nanoantenna arrays and demonstrated nearly complete deactivation of bacteria (%99,995). Our inactivation scheme opens door to continously self-cleaning surface coatings killing multi-drug resistance bacteria using ambient/room lighting.

Paper Details

Date Published: 10 March 2020
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Proc. SPIE 11257, Plasmonics in Biology and Medicine XVII, 1125706 (10 March 2020); doi: 10.1117/12.2546971
Show Author Affiliations
Xiangchao Zhu, Univ. of California, Santa Cruz (United States)
Mingran Liu, Univ. of California, Santa Cruz (United States)
Michael Trebino, Univ. of California, Santa Cruz (United States)
Jin Hwan Park, Univ. of California, Santa Cruz (United States)
Fitnat Yildiz, Univ. of California, Santa Cruz (United States)
Ahmet A. Yanik, Univ. of California, Santa Cruz (United States)


Published in SPIE Proceedings Vol. 11257:
Plasmonics in Biology and Medicine XVII
Tuan Vo-Dinh; Ho-Pui A. Ho; Krishanu Ray, Editor(s)

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