Understanding the Photothermal Conversion Efficiency of Gold Nanocrystals
Publication in refereed journal

香港中文大學研究人員

引用次數
替代計量分析
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其它資訊
摘要Plasmon-based photo thermal therapy is one of the most intriguing applications of noble metal nanostructures. The photothermal conversion efficiency is an essential parameter in practically realizing this application. The effects of the plasmon resonance wavelength, particle volume, shell coating, and assembly on the photothermal conversion efficiencies of Au nanocrystals are systematically studied by directly measuring the temperature of Au nanocrystal solutions with a thermocouple and analyzed on the basis of energy balance. The temperature of Au nanocrystal solutions reaches the maximum at similar to 75 degrees C when the plasmon resonance wavelength of Au nanocrystals is equal to the illumination laser wavelength. For Au nanocrystals with similar shapes, the larger the nanocrystal, the smaller the photothermal conversion efficiency becomes. The photothermal conversion can also be controlled by shell coating and assembly through the change in the plasmon resonance energy of Au nanocrystals. Moreover, coating Au nanocrystals with semiconductor materials that have band gap energies smaller than the illumination laser energy can improve the photothermal conversion efficiency owing to the presence of an additional light absorption channel.
著者Chen HJ, Shao L, Ming TA, Sun ZH, Zhao CM, Yang BC, Wang JF
期刊名稱Small
出版年份2010
月份10
日期18
卷號6
期次20
出版社Wiley: 12 months
頁次2272 - 2280
國際標準期刊號1613-6810
電子國際標準期刊號1613-6829
語言英式英語
Web of Science 學科類別Chemistry; Chemistry, Multidisciplinary; CHEMISTRY, MULTIDISCIPLINARY; Chemistry, Physical; CHEMISTRY, PHYSICAL; Materials Science; Materials Science, Multidisciplinary; MATERIALS SCIENCE, MULTIDISCIPLINARY; Nanoscience & Nanotechnology; NANOSCIENCE & NANOTECHNOLOGY; Physics; Physics, Applied; PHYSICS, APPLIED; Physics, Condensed Matter; PHYSICS, CONDENSED MATTER; Science & Technology - Other Topics

上次更新時間 2020-24-11 於 23:59