Fundamentals and Applications of Ultrafast Laser Induced Photothermal Reshaping of Plasmonic Nanomaterials

被引：2
作者：
Zhang Mingsi [1 ]
Jiang Meiling [1 ]
Feng Ziwei [1 ]
Ouyang Xu [1 ]
Cao Yaoyu [1 ]
Li Xiangping [1 ]
机构：
[1] Jinan Univ, Inst Photon Technol, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou 511113, Guangdong, Peoples R China
来源：
LASER & OPTOELECTRONICS PROGRESS | 2020年 / 57卷 / 11期
关键词：
laser optics; photothcrmal reshaping; surface plasmons; ultrafast laser; threshold; MELTING-POINT; GOLD NANOROD; COLOR;
D O I：
10.3788/LOP57.111401
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Owing to its advantages of ultrashort pulse width and extremely high peak intensity, ultrafast lasers have been widely used in fabricating plasmonic nanomaterials. Laser beams with extremely high power densities heat the free electrons in plasmonic nanomaterials, thereby increasing the lattice temperature and causing photothermal reshaping. Depending on the power density of the laser beam and the melting; boiling threshold, we review three types of photothermal reshaping mechanisms: complete melting above threshold, surface atom diffusion below melting temperature, and ablation. The exemplary applications of photothermal reshaping of plasmonic nanomaterials in optical data storage, plasmonic color printing, and steganography are reviewed.
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页数：14
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