Thermal Diffusivities Studied by Single-Particle Photothermal Deflection Microscopy

Thermal Diffusivities Studied by Single-Particle Photothermal Deflection Microscopy
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单粒子光热偏转显微镜研究的热扩散率

DOI:
10.1021/acsphotonics.7b00044
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发表时间:
2017
期刊:
影响因子:
7
通讯作者:
F. Cichos
F. Cichos
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
André Heber;M. Selmke;F. Cichos

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使用固定的泵浦光和可操纵的探测光,我们利用光热偏转对谐波加热的金纳米颗粒产生的热透镜成像。结合一个简单的几何光学模型,我们提取热扩散率。该测量技术被应用于揭示液晶的各向异性热导率。由于测量是高度本地化的,它铺平了道路,在复杂的生物系统中的异质性和各向异性的纳米热传输研究的应用。
Using a fixed pump beam and a steerable probe beam, we image the thermal lens generated by a harmonically heated gold nanoparticle using photothermal deflection. In combination with a simple geometric optics model, we extract thermal diffusivities. The measurement technique is applied to reveal the anisotropic thermal conductivity of a nematic liquid crystal. As the measurement is highly local, it paves the way for applications in heterogeneous and anisotropic nanoscale thermal transport studies in complex biological systems.
DOI: 10.1063/1.4890104
发表时间: 2014-07-07
影响因子: 4
作者:
Selmke, Markus;Heber, Andre;Cichos, Frank
通讯作者: Cichos, Frank
DOI: 10.1021/nn406389f
发表时间: 2014-02-01
期刊: ACS NANO
影响因子: 17.1
作者:
Heber, Andre;Selmke, Markus;Cichos, Frank
通讯作者: Cichos, Frank