Picosecond Laser Fabricated Ag, Au and Ag-Au Nanoparticles for Detecting Ammonium Perchlorate Using a Portable Raman Spectrometer

被引：4
|
作者：
Byram, Chandu [1 ]
Moram, Sree Sathya Bharathi [1 ]
Soma, Venugopal Rao [1 ]
机构：
[1] Univ Hyderabad, ACRHEM, Prof CR Rao Rd, Hyderabad 500046, Telangana, India
来源：
62ND DAE SOLID STATE PHYSICS SYMPOSIUM | 2018年 / 1942卷
关键词：
ABLATION; SCATTERING; NANOMATERIALS; SPECTROSCOPY; WATER;
D O I：
10.1063/1.5028659
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this paper, we present the results from fabrication studies of Ag, Au, and Ag-Au alloy nanoparticles (NPs) using picosecond laser ablation technique in the presence of liquid media. The alloy formation in the NPs was confirmed from UV-Visible measurements. The shape and crystallinity of NPs were investigated by using high resolution transmission electron microscopy (HRTEM), selected area diffraction pattern (SAED) and energy dispersive spectroscopy (EDS). The SERS effect of fabricated NPs was tested with methylene blue and an explosive molecule (ammonium perchlorate) using a portable Raman spectrometer and achieved EFs of similar to 10(6).
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页数：4
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