Issue 41, 2017
From the journal:

Nanoscale

Effects of pulsed laser irradiation on gold-coated silver nanoplates and their antibacterial activity†

Kaung Kyaw,ab   Hiroaki Ichimaru,a   Takayuki Kawagoe,a   Mitsuhiro Terakawa,c   Yuta Miyazawa,d   Daigou Mizoguchi,d   Masayuki Tsushidae  and  Takuro Niidome ORCID logo *a  

* Corresponding authors

a Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
E-mail: niidome@kumamoto-u.ac.jp

b Department of Chemical Engineering, Yangon Technological University, Gyogone, Insein P.O., Yangon 11-011, Myanmar

c Department of Electronics and Electrical Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

d Dai Nippon Toryo Co., Ltd., 1382-12 Shimoishigami, Otawara, Tochigi 324-8516, Japan

e Technical Division, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan

Abstract

Gold-coated silver nanoplates, when subjected to pulsed laser irradiation, changed their shape from triangular to spherical, accompanied by a shift of their extinction spectra. The simple single crystal structure of the silver nanoplates changed to multiple small crystal domains. The ratio of silver to gold of the particles also changed from 22 : 1 to 4.5 : 1, enabling more silver to be released. As a result, the antibacterial activity of the gold-coated silver nanoplates was significantly increased after pulsed laser irradiation.

Graphical abstract: Effects of pulsed laser irradiation on gold-coated silver nanoplates and their antibacterial activity

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Article information

DOI
https://doi.org/10.1039/C7NR06513B
Article type
Paper
Submitted
01 Sep 2017
Accepted
06 Oct 2017
First published
11 Oct 2017

Nanoscale, 2017,9, 16101-16105

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Effects of pulsed laser irradiation on gold-coated silver nanoplates and their antibacterial activity

K. Kyaw, H. Ichimaru, T. Kawagoe, M. Terakawa, Y. Miyazawa, D. Mizoguchi, M. Tsushida and T. Niidome, Nanoscale, 2017, 9, 16101 DOI: 10.1039/C7NR06513B

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