Photothermal effects induced by laser excitation in a scanning tunneling microscope期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Photothermal effects induced by laser excitation in a scanning tunneling microscope

Affiliation:	1. School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, PR China;2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, PR China;3. College of Electronic Engineering, South China Agricultural University, Guangzhou 510640, PR China;4. Teaching and Training Center for Engineering Basis, South China Agricultural University, Guangzhou 510640, PR China;1. Institute of Robotics and Automatic Information System, College of Artificial Intelligence, Nankai University, Tianjin, China;2. Tianjin Key Laboratory of Intelligent Robotics, Nankai University, Tianjin, China;1. Department of Computational Technique and Automated System Software, Don State Technical University, 1 Gagarin Square, 344010 Rostov-on-Don, Russian Federation;2. Department of Electrical Engineering and Electronics, Don State Technical University, 1 Gagarin Square, 344010 Rostov-on-Don, Russian Federation;3. Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam;4. Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam;5. Frantsevych Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krzhyzhanivsky Street, 03142 Kyiv, Ukraine;6. Department of Inorganic and Physical Chemistry, Lesya Ukrainka Eastern European National University, 13 Voli Avenue, 43025 Lutsk, Ukraine;1. Tecnológico Nacional de México/I. T. Tepic, Av. Tecnológico #2595, Tepic, 63175, Nayarit, Mexico;2. Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Rosales y Blvd. Luis Encinas, Hermosillo, 83000, Sonora, Mexico;3. Unidad de Tecnología de Alimentos-Secretaría de Investigación y Posgrado, Universidad Autónoma de Nayarit, Ciudad de la Cultura SN, Tepic, 63000, Nayarit, Mexico;4. Centro de Investigación en Alimentación y Desarrollo (CIAD, AC), Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo, 83304, Sonora, Mexico

Abstract:	Numerous near-field experimental methods use laser excitation inducing non-negligible thermal effects that are not taken into account. We particularly investigate the case of a scanning tunneling microscope. The analysis of the experimental results gives the thermal contribution of the probe in the measured signal when the probe is irradiated by the laser beam. The phase of the signal allows the distinction between the effects induced by the probe and the sample. We show that the experimental set-up can measure the periodic thermal expansion of the sample with the picometer resolution.

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