Investigation of the molecular dynamics of supercooled water in liquid crystal structure

• Project/Area Number: 24740293
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Biophysics/Chemical physics
• Research Institution: Tokyo City University
• Principal Investigator: SUDO Seiichi 東京都市大学, 共通教育部, 准教授 (10453945)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 液晶構造 / 水 / 分子ダイナミクス / 誘電分光 / 液晶 / 多様性 / ガラス転移

Research Abstract

We performed an investigation of the molecular dynamics of supercooled water in liquid crystal structure. Three relaxation processes due to motion of water molecules were observed. The lowest frequency process is due to motion of water confined molecules. The middle frequency process is due to motion of water that is strongly restricted by the structure of solute. The highest frequency process is due to the reorientation of water molecules that do not form a tetrahedral arrangement structure as water monomer and/or dimer. These relaxation processes reflect a variety of local structures of water arising from the structure of liquid crystal.

Research Products

• [Journal Article] Easy measurement and analysis method of zeta potential and electrophoretic mobility of water-dispersed colloidal particles by using a self-mixing solid-state laser (2013)
  • Author(s): S. Sudo, T. Ohtomo, and K. Otsuka
  • Journal Title: J. Appl. Phys. Volume: 114 Pages: 63106-63106
  • DOI: 10.1063/1.4848485
  • Peer Reviewed
• [Journal Article] The Johari-Goldstein process of solute in high water content aqueous-solutions (2013)
  • Author(s): Seiichi Sudo and Shin Yagihara
  • Journal Title: Phys. Rev. E Volume: 87 Issue: 4 Pages: 42309-42309
  • DOI: 10.1103/physreve.87.042309
  • Peer Reviewed
• [Journal Article] Study of hydrogen bonding and thermodynamic behavior in water–1,4-dioxane mixture using time domain reflectometry (2013)
  • Author(s): A.C. Kumbharkhane, Y.S. Joshi, Suresh C. Mehrotra, Shin Yagihara, Seiichi Sudo
  • Journal Title: Physica B Volume: 42 Pages: 1-7
  • DOI: 10.1016/j.physb.2013.03.040
  • Peer Reviewed
• [Journal Article] Dielectric measurement of the food meat and human body (2012)
  • Author(s): S. Sudo, M. Asano, M. Fukuzaki, and S. Yagihara
  • Journal Title: Trans. Mat. Res. Soc. Jpn. Volume: 37 Pages: 519-519
  • Peer Reviewed
• [Journal Article] Dielectric measurement of the food meat and human body (2012)
  • Author(s): S. Sudo, M. Asano, M. Fukuzaki, and S. Yagihara
  • Journal Title: Trans. Mat. Res. Soc. Japan Volume: 37 Pages: 519-522
  • Peer Reviewed
• [Presentation] 凍結したモルタル内の水の挙動 (2012)
  • Author(s): 浅野恵美, 阿部史也, 八木原晋, 新屋敷直木, 喜多理王, 須藤誠一
  • Organizer: 第22回日本MRS学術シンポジウム
  • Place of Presentation: 横浜