Junko Morikawa

School of Materials and Chemical Technology, Tokyo Institute of Technology
Professor
A03
Research AreasThermal Analysis, Thermophysical Properties, Polymeric Materials
Participating Group (2020-2021)

Precise Measurement of Thermophysical Properties of Soft Crystals and the Understanding of Phase Transitions using Thermal Imaging Technique

Keywords
Thermal Diffusivity, Thermal Effusivity, Phase Transition, Soft Crystal, Infrared Camera, Temperature wave method, Thermospectroscopy, the phonon group velocity
Co-Researcher
Co-Researcher: Meguya Ryu (National Institute of Advanced Industrial Science and Technology (AIST), Researcher)

Research Outline

Based on the precise measurements of thermo-physical properties of soft crystals during phase transitions, coupled with the thermo-spectroscopic imaging in Infrared wavebands, the unique thermal properties peculiar to the soft crystals are examined. Specifically, (1) the micro-nano scale temperature wave method utilizing the photo-thermal effect induced by the focused laser light input, (2) the simultaneous measurements of thermo-spectroscopy and the fluorescent spectroscopy, (3) the high-resolution ATR-IR imaging and nano-scale FTIR, and (4) the inelastic light and X-ray scattering method for the group velocity of phonon, will be applied to the measurement of anisotropic thermophysical properties, such as thermal diffusivity and thermal effusivity, induced by the external stimulation of light and the mechanical force fields. The relationship between the nano-micro scale molecular anisotropy and the thermal diffusion are the targeted topics to be examined.

Thermo-spectroscopic image at phase transitions of n-Tetracosane.
Temperature-dependent thermoelastic anisotropy of the phenyl pyrimidine liquid crystal
Participating Group (2018-2019)

Precise Measurement of Thermophysical Properties of Softcrystals and the thermal control using Thermal Imaging Technique.

Keywords
Thermal Diffusivity, Soft Crystal, Thermal Effusivity, Phase Transition, Infrared Camera
Co-Researcher
Co-Researcher: Meguya Ryu (National Institute of Advanced Industrial Science and Technology (AIST), Researcher)

Research Outline

Based on the precise measurements of thermo-physical properties of soft crystals during phase transitions, coupled with the thermo-spectroscopic imaging in Infrared wavebands, the unique thermal properties peculiar to the soft crystals are examined. Specifically, (1) the micro-nano scale temperature wave method utilizing the photo-thermal effect induced by the focused laser light input, (2) the simultaneous measurements of thermo-spectroscopy and the fluorescent spectroscopy, and (3) the high-resolution ATR-IR imaging and nano-scale FTIR, will be applied to the measurement of anisotropic thermophysical properties, such as thermal diffusivity and thermal effusivity, induced by the external stimulation of light and the mechanical force fields. The relationship between the nano-micro scale molecular anisotropy and the thermal diffusion are the targeted topics to be examined.

有機分子性結晶の固相転移の熱・赤外スペクトルイメージング
熱・赤外スペクトル同時イメージング装置
熱・赤外スペクトル同時イメージング装置によるnアルカン相転移における温度変化および赤外吸収スペクトル

Publications

Academic papers/reviewed

A03-12

  1. "Infrared polariscopy imaging of linear polymeric patterns with focal plane array" R. Honda, M. Ryu, M. Moritake, A. Balcytis, V. Mizeikis, J. Vongsvivut, M. J. Tobin, D. Appadoo, J. L. Li, S. H. Ng, S. Juodkazis and J. Morikawa, Nanomaterials, 2019, 9, 732.
    DOI: 10.3390/nano9050732
  2. "Nanoscale optical and structural characterisation of silk" M. Ryu, R. Honda, A. Cernescu, A. Vailionis, A. Balcytis, J. Vongsvivut, J. L. Li, D. P. Linklater, E. P. Ivanova, V. Mizeikis, M. J. Tobin, J. Morikawa, S. Juodkazis, Beilstein J. Nanotechnol., 2019, 10, 922-929.
    DOI: 10.3762/bjnano.10.93
  3. "Simple multi-wavelength imaging of birefringence:case study of silk" R. Honda, M. Ryu, J. Li, V. Mizeikis, S. Juodkazis, J. Morikawa, Sci. Rep., 2018, 8, 17652.
    DOI: 10.1038/s41598-018-36114-8
Related Website(s)
Contact
morikawa.j.aa@m.titech.ac.jp