Formation of Silver Nanoparticles Oligomers Obtained via Laser Ablation in a Liquid by Sequential Centrifugation and Ultrasonication: Tunable Long-Wavelength Shift of Plasmon Resonance for Biomedical Applications

IF 0.8 4区 物理与天体物理 Q4 OPTICS
D. R. Dadadzhanov, A. V. Palekhova, G. Alexan, M. A. Baranov, N. A. Maslova
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引用次数: 0

Abstract

A relatively simple physical method has been proposed for fabrication of stable oligomers of silver nanoparticles, preliminarily obtained by pulsed laser ablation of a metal target in a liquid. Oligomers of silver nanoparticles are formed in an aqueous solution after prolonged centrifugation at 18 000g and subsequent ultrasonication of the initial colloidal solution of spherical nanoparticles obtained by laser ablation. The plasmon resonance in oligomers is shifted relative to the plasmon resonance in spherical nanoparticles to the long wavelength region by 140 nm.

Abstract Image

Abstract Image

通过顺序离心和超声处理在液体中形成激光烧蚀银纳米粒子低聚物:用于生物医学应用的可调谐等离子体共振长波长位移
摘要 提出了一种相对简单的物理方法来制造稳定的银纳米粒子低聚物,这种低聚物是通过脉冲激光烧蚀液体中的金属目标初步获得的。通过激光烧蚀获得的球形纳米粒子的初始胶体溶液在 18000g 下长时间离心并随后进行超声处理后,银纳米粒子的低聚物在水溶液中形成。与球形纳米粒子的等离子共振相比,低聚物中的等离子共振向长波长区域偏移了 140 nm。
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来源期刊
Optics and Spectroscopy
Optics and Spectroscopy 物理-光谱学
CiteScore
1.60
自引率
0.00%
发文量
55
审稿时长
4.5 months
期刊介绍: Optics and Spectroscopy (Optika i spektroskopiya), founded in 1956, presents original and review papers in various fields of modern optics and spectroscopy in the entire wavelength range from radio waves to X-rays. Topics covered include problems of theoretical and experimental spectroscopy of atoms, molecules, and condensed state, lasers and the interaction of laser radiation with matter, physical and geometrical optics, holography, and physical principles of optical instrument making.
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