[1] [1] M. Akoshima, B. Hay, M. Neda, and M. Grelard, “Experimental verification to obtain intrinsic thermal diffusivity by laser-flash method,”International Journal of Thermophysics, 2013, 34: 778–791.

[2] [2] Y. Takahashi, “Measurement of thermophysical properties of metals and ceramics by the laser-flash method,”International Journal of Thermophysics, 1984, 5: 41–52.

[3] [3] T. Baba and A. Ono, “Improvement of the laser flash method to reduce uncertainty in thermal diffusivity measurements,”Measurement Science and Technology, 2001, 12: 2046.

[4] [4] T. Arai, T. Baba, and A. Ono, “Feasibility of a measurement method of local heat capacity by the laser flash method,”Netsu Bussei, 1987, 1(2): 78–80.

[5] [5] A. Kusiak, J. Martan, J. L. Battaglia, and R. Daniel, “Using pulsed and modulated photothermal radiometry to measure the thermal conductivity of thin films,”Thermochim Acta, 2013, 556: 1–5.

[6] [6] D. Trefon-Radziejewska, J. Juszczyk, A. Fleming, N. Horny, J. S. Antoniow, M. Chirtoc,et al., “Thermal characterization of metal phthalocyanine layers using photothermal radiometry and scanning thermal microscopy methods,”Synthetic Metals, 2017, 232: 72–78.

[7] [7] J. Zeng, K. M. Chung, S. R. Adapa, T. Feng, and R. Chen, “In-situ thermal transport measurement of flowing fluid using modulated photothermal radiometry,”International Journal of Heat and Mass Transfer, 2021, 180: 121767.

[8] [8] M. Kuriakose, M. Depriester, D. Dadarlat, and A. H. Sahraoui, “Improved methods for measuring thermal parameters of liquid samples using photothermal infrared radiometry,”Measurement Science and Technology, 2013, 24(2): 025603.

[9] [9] A. Kusiak, C. Pradere, and J. L. Battaglia, “Measuring the thermal conductivity of liquids using photo-thermal radiometry,”Measurement Science and Technology, 2010, 21(1): 015403.

[10] [10] B. Jaimes, D. Pulgar, M. A. Ranaudo, J. Chirinos, and M. Caetano, “A dual-beam photothermal reflection based system for thermal diffusivity measurement of optically dense liquids,”Review of Scientific Instruments, 2010, 81(2): 024902.

[11] [11] M. A. Olmstead, N. M. Amer, S. Kohn, D. Fournier, and A. C. Boccara, “Photothermal displacement spectroscopy: an optical probe for solids and surface,”Applied Physics A, 1983, 32: 141–154.

[12] [12] Z. L. Wu, M. Reichling, X. Q. Hu, K. Balasubramanian, and K. H. Guenther, “Absorption and thermal conductivity of oxide thin films measured by photothermal displacement and reflectance methods,”Applied Optics, 1993, 32(28): 5660–5665.

[13] [13] W. B. Jackson, N. M. Amer, A. C. Boccara, and D. Fournier, “Photothermal deflection spectroscopy and detection,”Applied Optics, 1981, 20(8): 1333–1344.

[14] [14] L. T. Xiao, C. Y. Li, S. Q. Guo, S. T. Jia, and G. S. Zhou, “Liquid thermal diffusivity measurement by pulsed photothermal deflection technique,”Laser Processing of Materials and Industrial Applications II, 1998, 3550: 491–496.

[15] [15] P. S. Jeon, J. H. Kim, H. J. Kim, and J. Yoo, “Thermal conductivity measurement of anisotropic material using photothermal deflection method,”Thermochim Acta, 2008, 477(1–2): 32–37.

[16] [16] A. Loges, S. Herberger, D. Werner, and T. Wetzel, “Thermal characterization of Li-ion cell electrodes by photothermal deflection spectroscopy,”Journal of Power Sources, 2016, 325: 104–115.

[17] [17] S. Ilahi, F. Saidi, R. Hamila, N. Yacoubi, L. Auvray, and H. Maaref, “Photothermal deflection spectroscopy PDS investigation of optical and thermal properties of BGaAs/GaAs alloys,”Current Applied Physics, 2013, 13(2): 610–613.

[18] [18] M. Kim, K. Park, G. Kim, J. Yoo, D. K. Kim, and H. Kim, “Collinear deflection method for the measurement of thermal conductivity of transparent single layer anisotropic material,”Applied Sciences, 2019, 9(8): 1522.

[19] [19] J. C. Murphy and L. C. Aamodt, “Optically detected photothermal imaging,”Applied Physics Letters, 1981, 38(4): 196–198.

[20] [20] F. A. McDonald, G. C. Wetsel, and S. A. Stotts, “Scanned photothermal Imaging of subsurface structure,”Acoustical Imaging, 1982: 147–155.

[21] [21] B. Gotter, W. Faubel, and R. H. H. Neubert, “Optical methods for measurements of skin penetration,”Skin Pharmacology and Physiology, 2008, 21(3): 156–65.

[22] [22] B. Gotter, W. Faubel, and R. H. H. Neubert, “Photothermal imaging in 3D surface analysis of membrane drug delivery,”European Journal of Pharmaceutics and Biopharmaceutics, 2010, 74(1): 26–32.

[23] [23] G. Thummerer, G. Mayr, and P. Burgholzer, “3D photothermal imaging of subsurface defects in composite materials,”NDT and E International, 2021, 122: 102476.

[24] [24] G. Thummerer, L. Gahleitner, G. Mayr, and P. Burgholzer, “3D photothermal imaging of real subsurface defects in anisotropic media,”Journal of Applied Physics, 2021, 130(22): 224901.

[25] [25] G. C. Wetsel and F. A. McDonald, “Resolution and definition in photothermal imaging,”Journal of Applied Physics, 1984, 56(11): 3081–3085.

[26] [26] K. Friedrich, K. Haupt, U. Seidel, and H. G. Walther, “Definition, resolution, and contrast in photothermal imaging,”Journal of Applied Physics, 1992, 72: 3759–3764.

[27] [27] M. Kim, J. Yoo, D. K. Kim, and H. Kim, “Development on the reconstruction of photothermal imaging method for subsurface structure,”Journal of Visualization, 2019, 22: 329–339.

[28] [28] M. Kim, J. Yoo, D. K. Kim, and H. Kim, “Measurement of contrast and spatial resolution for the photothermal imaging method,”Applied Sciences, 2019, 9(10): 1996.

[29] [29] M. Kim, G. Kim, J. Yoo, D. K. Kim, and H. Kim, “Experimental study on the influence of surface roughness for photothermal imaging with various measurement conditions,”Thermochim Acta, 2018, 661: 7–17.

[30] [30] D. Marr and E. Hildreth, “Theory of edge detection,”Proceedings of the Royal Society of London–Biological Sciences, 1980, 207(1167): 187–217.

[31] [31] S. N. Lashansky, S. Mansbach, M. J. Berger, T. Karasik, and M. Bin-Nun, “Edge response revisited,”Proceeding of SPIE, 2008, 6941: 324–332.

[32] [32] E. Nadernejad, S. Sharifzadeh, and H. Hassanpour, “Edge detection techniques: evaluations and comparisons,”Applied Mathematical Science, 2008, 2(31): 1507–1520.

[33] [33] R. Maini and H. Aggarwal, “Study and comparison of various image edge detection techniques,”International Journal of Image Processing, 2009, 3(1): 1–11.