"Fast sound" phenomena and liquid-liquid phase transition in liquid water: direct measurement of fluctuations = Entropy

• Project/Area Number: 24740265
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: Hiroshima University
• Principal Investigator: KAJIHARA Yukio 広島大学, 総合科学研究科, 助教 (20402654)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 液体－液体相転移 / ゆらぎ / ダイナミクス / エントロピー / 液体 / 相転移 / 非弾性散乱 / 小角散乱

Research Abstract

We have recently carried out research into liquids by a new experimental method called "fast sound measurement" which is proposed by us. This method can directly detect fluctuations in liquids and it can make crucial contribution to understand the liquid-liquid phase transition phenomena of water.
In this project, we applied this method to (1) water-alcohol mixture and (2) liquid Te system which exhibits similar thermodynamic anomalies to liquid water. We demonstrated the validity of the method through these application and also discussed fluctuations in these systems.

Research Products

• [Journal Article] Inelastic x-ray scattering study of plasmon dispersions in solid and liquid Rb (2014)
  • Author(s): K. Kimura, K. Matsuda, N. Hiraoka, T. Fukumaru, Y. Kajihara, M. Inui, M. Yao
  • Journal Title: Phys. Rev. B Volume: 89 Issue: 1 Pages: 14206-14206
  • DOI: 10.1103/physrevb.89.014206
  • NAID: 120005530936
  • Peer Reviewed
• [Journal Article] Electron Momentum Density in Liquid Silicon (2013)
  • Author(s): K. Matsuda, T. Nagao, Y. Kajihara, M. Inui, K. Tamura, J. Nakamura, K. Kimura, M. Yao, M. Itou, and Y. Sakurai
  • Journal Title: Phys. Rev. B Volume: 88 Issue: 11 Pages: 115125-115125
  • DOI: 10.1103/physrevb.88.115125
  • Peer Reviewed
• [Journal Article] Chemical order in liquid As2Se3 at high temperatures obtained by X-ray scattering and reverse Monte Carlo modeling (2013)
  • Author(s): Masanori Inui, Yukio Kajihara, Koji Kimura, Takayuki Fukumaru, Kazuhiro Matsuda, Makoto Yao
  • Journal Title: Journal of Non-Crystalline Solids Volume: 366 Pages: 22-29
  • DOI: 10.1016/j.jnoncrysol.2013.01.035
  • Peer Reviewed
• [Journal Article] Transverse excitations in liquid metals (2013)
  • Author(s): S.Hosokawa, S.Munejiri, M.Inui, Y.Kajihara, W.-C.Pilgrim, Y.Ohmasa,S.Tsutsui, A. Q. R. Baron,F. Shimojo and K. Hoshino
  • Journal Title: Journal of Physics: Condensed Matter Volume: 25 Issue: 11 Pages: 112101-112101
  • DOI: 10.1088/0953-8984/25/11/112101
  • NAID: 120005399988
  • Peer Reviewed
• [Journal Article] Density fluctuations at the continuous liquid-liquid phase transition in chalcogen systems (2012)
  • Author(s): Y. Kajihara, M. Inui, K. Matsuda, T. Nagao, and K. Ohara
  • Journal Title: Physical Review B Volume: 86 Issue: 21
  • DOI: 10.1103/physrevb.86.214202
  • Peer Reviewed
• [Presentation] 水―アルコール混合系の「速い音速」測定とゆらぎII (2014)
  • Author(s): 梶原行夫、S. Di Fonzo、斎藤真器名、C. Masciovecchio、乾雅祝、筒井智嗣、A. Q. R. Baron
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
  • Year and Date: 2014-03-27
• [Presentation] 水―アルコール混合系の「速い音速」測定とゆらぎ (2014)
  • Author(s): 梶原行夫、S. Di Fonzo、斎藤真器名、C. Masciovecchio、乾雅祝、筒井智嗣、A. Q. R. Baron
  • Organizer: 第27回日本放射光学会年会
  • Place of Presentation: 広島国際会議場
  • Year and Date: 2014-01-11
• [Presentation] 水―アルコール混合系の「速い音速」測定とゆらぎ (2013)
  • Author(s): 梶原行夫、S. Di Fonzo、斎藤真器名、C. Masciovecchio、乾雅祝、筒井智嗣、A. Q. R. Baron
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 徳島大学
  • Year and Date: 2013-09-25
• [Presentation] 液体Ge-Te系のX線小角および非弾性X線散乱測定 (2013)
  • Author(s): 梶原行夫、乾雅祝、千葉文野、筒井智嗣、アルフレッドバロン、尾原幸治
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-03-26
• [Presentation] Fast sound measurements for liquid water-alcohol mixtures (2013)
  • Author(s): Y.Kajihara, S.Di Fonzo, M.Saito, C.Masciovecchio, M.Inui, S.Tsutsui and A.Q.R.Baron
  • Organizer: 8th International Conference on Inelastic X-ray Scattering (IXS2013)
  • Place of Presentation: SLAQ in USA
• [Presentation] 共晶系合金液体・錫-鉛系のX線小角散乱実験 (2012)
  • Author(s): 梶原行夫、乾雅祝、尾原幸治
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 2012-09-19
• [Presentation] 水－アルコール混合系の「速い音速」測定とゆらぎII
  • Author(s): 梶原行夫、S. Di Fonzo、斎藤真器名、C. Masciovecchio、乾雅祝、筒井智嗣、A. Q. R. Baron
  • Organizer: 日本物理学会第６９回年次大会
  • Place of Presentation: 東海大学
• [Presentation] 水－アルコール混合系の「速い音速」測定とゆらぎ
  • Author(s): 梶原行夫、S. Di Fonzo、斎藤真器名、C. Masciovecchio、乾雅祝、筒井智嗣、A. Q. R. Baron
  • Organizer: 第２７回日本放射光学会年会
  • Place of Presentation: 広島国際会議場
• [Presentation] 水－アルコール混合系の「速い音速」測定とゆらぎ
  • Author(s): 梶原行夫、S. Di Fonzo、斎藤真器名、C. Masciovecchio、乾雅祝、筒井智嗣、A. Q. R. Baron
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 徳島大学
• [Presentation] "Fast sound" measurements for liquid water-alcohol mixtures
  • Author(s): Y.Kajihara, S.Di Fonzo, M.Saito, C.Masciovecchio, M.Inui, S.Tsutsui and A.Q.R.Baron
  • Organizer: 8th International Conference on Inelastic X-ray Scattering (IXS2013)
  • Place of Presentation: SLAQ, USA
• [Presentation] 共晶系合金液体・錫－鉛系のＸ線小角散乱実験
  • Author(s): 梶原行夫、乾雅祝、尾原幸治
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] 液体Ge-Te混合系のX線小角および非弾性X線散乱測定
  • Author(s): 梶原行夫、乾雅祝、千葉文野、筒井智嗣、アルフレッド・バロン、尾原幸治
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
• [Remarks]
  • URL: http://home.hiroshima-u.ac.jp/kajihara/index.html
• [Remarks] 梶原行夫ホームページ
  • URL: http://home.hiroshima-u.ac.jp/kajihara/index.html
• [Remarks] 梶原行夫研究業績リスト
  • URL: http://home.hiroshima-u.ac.jp/kajihara/publications.html