氧化石墨烯纳米粒子的尺寸和化学成分对光吸收截面的影响。

Effect of size and chemical composition of graphene oxide nanoparticles on optical absorption cross-section.

机构信息

University of Texas at Austin, Department of Biomedical Engineering, Austin, Texas, United States.

University of Tehran, Faculty of new Science and Engineering, Tehran, Iran.

出版信息

J Biomed Opt. 2018 Aug;23(8):1-9. doi: 10.1117/1.JBO.23.8.085007.

DOI:10.1117/1.JBO.23.8.085007

PMID:30156063

Abstract

Photothermal therapy with various nanoparticles, as photothermal transducers, is a widely researched technique. A continuous wave (CW) laser is employed during this procedure. The therapeutic setup is slightly modified to measure the optical absorption cross-section of the graphene oxide (GO), by mitigating the effects of heat diffusion and light scattering. With an 808-nm CW laser setup modulated by a waveform modulation setup, the effect of nanoparticle size and composition of GO in water on optical absorption cross section is characterized.

摘要

光热疗法中使用各种纳米粒子作为光热换能器，是一种广泛研究的技术。该过程采用连续波（CW）激光。通过减轻热扩散和光散射的影响，对治疗装置进行了轻微修改，以测量氧化石墨烯（GO）的光吸收截面。使用调制波形成套的 808nm CW 激光装置，对 GO 的纳米粒子尺寸和组成在水中对光吸收截面的影响进行了表征。