Ultrafast Dynamics of Photoexcited Gold Nanostructures on Mica Substrates Probed by Transient Absorption Spectroscopy and Time-resolved X-ray Diffraction

被引：0
|
作者：
Sotome, Hikaru [1 ]
Azuma, Yosuke [1 ]
Asami, Sho [1 ]
Matsushima, Shin-ichi [1 ]
Kajimoto, Shinji [1 ]
Fukumura, Hiroshi [1 ]
机构：
[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Aoba Ku, Sendai, Miyagi 9808578, Japan
来源：
CHEMISTRY LETTERS | 2015年 / 44卷 / 07期
关键词：
OPTICAL-PROPERTIES; ELECTRON DYNAMICS; SIZE DEPENDENCE; NANOPARTICLES; NANOCRYSTALS; RELAXATION; SHAPE;
D O I：
10.1246/cl.150232
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Gold nanostructures deposited on mica were excited with 400-nm sub-ps light pulses. Sub-ps transient absorption spectroscopy showed that excited hot electrons in the gold nanostructures decayed with a time constant of 13 ps through electron-phonon coupling in the nanostructures. Sub-ps time-resolved X-ray diffraction revealed that the (0010) mica lattice constant in a 1.7 mu m thick surface layer expanded with a time constant of 6 ps.
引用
收藏
页码：961 / 963
页数：3
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