Back to Search Start Over

Light-induced reversible expansion of individual gold nanoplates

Authors :
Jinsheng Lu
Yu Hong
Qiang Li
Yingxin Xu
Wei Fang
Min Qiu
Source :
AIP Advances, Vol 7, Iss 10, Pp 105025-105025-6 (2017)
Publication Year :
2017
Publisher :
AIP Publishing LLC, 2017.

Abstract

Light-induced mechanical response of materials has been extensively investigated and widely utilized to convert light energy into mechanical energy directly. The metallic nanomaterials have excellent photothermal properties and show enormous potential in micromechanical actuators, etc. However, the photo-thermo-mechanical properties of individual metallic nanostructures have yet to be well investigated. Here, we experimentally demonstrate a way to realize light-induced reversible expansion of individual gold nanoplates on optical microfibers. The light-induced thermal expansion coefficient is obtained as 21.4 ± 4.6 ∼ 31.5 ± 4.2 μ·K-1 when the light-induced heating temperature of the gold nanoplates is 240 ∼ 490 °C. The photo-thermo-mechanical response time of the gold nanoplates is about 0.3 ± 0.1 s. This insight into the photo-thermo-mechanical properties of the gold nanoplates could deepen the understanding of the light-induced reversible expansion behavior in nanoscale and pave the way for applications based on this piezoelectric-like response, such as light-driven metallic micromotors.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
7
Issue :
10
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.0b08297556cc4fba9da15036277df4fa
Document Type :
article
Full Text :
https://doi.org/10.1063/1.4998703