Presentation Information
[8a-N206-1][The 58th Young Scientist Presentation Award Speech] External Field Response Analysis on Two-body Interaction Force in Molten Metals and Extension of Analysis Environments
〇Yuto Nishiwaki1, Toru Utsunomiya1, Ken-ichi Amano2, Takashi Ichii1 (1.Kyoto Univ., 2.Meijo Univ.)
Keywords:
molten metals,particle dispersion,atomic force microscopy
The two-body interactive force in molten metal was analyzed by atomic force microscopy (AFM) under an external electric field and at variable temperature. At room temperature and without an external electric field, the strong attractive forces acted between a tungsten (W) tip and a SiO2/Si substrate in molten Ga. The obtained temperature response is consistent with the response of the non-delayed van der Waals (vdW) force derived from Lifshitz theory. In contrast, the obtained electric field response is not explained by the classical linear vdW force. Instead, it corresponds to a nonlinear statistical mechanics model in which the nonlinear response of the dielectric (saturation polarization) is dominant.