OPTICAL CHARACTERISTICS OF METALLIC NANOPARTICLES TAKING INTO ACCOUNT THEIR MELTING UNDER LASER RADIATION
Abstract
Cross-sections and efficiency factors of absorption, scattering, and attenuation of the laser radiation with a wavelength λ = 532 nm and in the wavelength range 475-625 nm for the two-layer spherical gold nanoparticles, which were partially melted, were calculated and studied theoretically for the particles with the radii r00 = 10, 25, 50, 75 and 100 nm assuming different ratios between shell and core in the range 0-r00. It was found that the changes in the optical parameters of nanoparticles with the changing of the aggregate state (melting) influences greatly on the heating dynamics of nanoparticles above the melting point and subsequent thermal processes.
About the Authors
V. K. Pustovalov
Belarusian National Technical University
Russian Federation
Russian Federation
A. N. Chumakov
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus
Russian Federation
Russian Federation
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Review
For citations:
Pustovalov V.K., Chumakov A.N. OPTICAL CHARACTERISTICS OF METALLIC NANOPARTICLES TAKING INTO ACCOUNT THEIR MELTING UNDER LASER RADIATION. Zhurnal Prikladnoii Spektroskopii. 2017;84(1):84-89. (In Russ.)
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