Thermal Properties of Materials Characterized by Scanning Electron-Acoustic Microscopy
GAO Chun-Ming, ZHANG Shu-Yi, ZHANG Zhong-Ning, SHUI Xiu-Ji, JIANG Tao
Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093
Thermal Properties of Materials Characterized by Scanning Electron-Acoustic Microscopy
GAO Chun-Ming;ZHANG Shu-Yi;ZHANG Zhong-Ning;SHUI Xiu-Ji;JIANG Tao
Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093
关键词 ：
44.10.+i ,
66.10.Cb ,
66.70.+f ,
78.20.Hp ,
78.20.Nv
Abstract ： A modified technique of scanning electron-acoustic microscopy is employed to determine thermal diffusivity of materials. Using the dependence of the electron-acoustic signal on modulation frequency of the electron beam, the thermal diffusivity of materials is characterized based on a simplified thermoelastic theory. The thermal diffusivities of several metals characterized by the modified scanning electron-acoustic microscopy are in good agreement with the referential values of the corresponding materials, which proves that the scanning electron-acoustic microscopy can be used to characterize the thermal diffusivity of materials effectively. In addition, for micro-inhomogeneous materials, such as biological tissues, the macro-effective (average) thermal diffusivities are characterized by the technique.
Key words ：
44.10.+i
66.10.Cb
66.70.+f
78.20.Hp
78.20.Nv
出版日期: 2005-09-01
引用本文:
GAO Chun-Ming;ZHANG Shu-Yi;ZHANG Zhong-Ning;SHUI Xiu-Ji;JIANG Tao. Thermal Properties of Materials Characterized by Scanning Electron-Acoustic Microscopy[J]. 中国物理快报, 2005, 22(9): 2309-2312.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I9/2309
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