In situ monitoring of the shape distribution of metallic colloids from extinction spectroscopy measurements

被引：0
作者：
Mansour, Yehia [1 ]
Battie, Yann [1 ]
Naciri, Aotmane En [1 ]
Chaoui, Nouari [1 ]
机构：
[1] Univ Lorraine, Lab Chim & Phys, Approche Multiechelle Milieux Complexes LCP A2MC, 1 Bd Arago, F-57070 Metz, France
来源：
OPTICS LETTERS | 2022年 / 47卷 / 13期
关键词：
SILVER NANOPARTICLES; GOLD NANOPARTICLES; SENSITIVITY; SIZE;
D O I：
10.1364/OL.460555
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this Letter, we propose a new, to the best of our knowledge, approach to determine the shape distribution of gold (Au) nanorods from real-time extinction spectroscopy measurements. This method is based on the linearization of the shape distribution effective medium theory (SDEMT). The aspect ratio distribution ofAu colloids is obtained in a fewtens of ms without any a priori information on the distribution. Both bimodal and monomodal shape distributions of nanoparticles can be extracted by analyzing their extinction spectra. The proposed method is applied to monitor the change in the nanoparticle shape during their exposure to ns-laser pulses. (C) 2022 Optica Publishing Group
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收藏
页码：3255 / 3258
页数：4
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