Mixing of longitudinal and transverse modes in liquid:ab initio molecular-dynamics simulations

• Project/Area Number: 24540406
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: Hiroshima University
• Principal Investigator: MUNEJIRI Shuji 広島大学, 総合科学研究科, 准教授 (90353119)
• Co-Investigator(Kenkyū-buntansha): HOSHINO Kozo 広島大学, 大学院総合科学研究科, 名誉教授 (30134951)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 液体 / シミュレーション / 横波 / 液体中の横波

Outline of Final Research Achievements

The high school physics text book says transverse wave does not propagate in fluids. But, Hosokawa and his collaborators have found transverse mode in liquid gallium by inelastic x-ray scattering experiment. In the present study, we have found that, one of the origins of the transverse wave is the cage effect. We have also revealed that, the mixing of the longitudinal and transverse waves occurs by anisotropic structures in liquids.

Research Products

• [Journal Article] Static and dynamic structures of liquid tin at high pressure from ab initio molecular dynamics (2012)
  • Author(s): S.Munejiri, F.Shimojo and K.Hoshino
  • Journal Title: Physical Review Volume: 86 Issue: 10 Pages: 83-92
  • DOI: 10.1103/physrevb.86.104202
  • Peer Reviewed
• [Presentation] 液体Biの特異な分散関係と原子間相互作用 (2015)
  • Author(s): 宗尻 修治、 乾 雅祝
  • Organizer: 日本物理学会第70 回年次大会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 液体中の横波と動的構造因子 (2014)
  • Author(s): 宗尻修治
  • Organizer: 第２８回分子シミュレーション討論会
  • Place of Presentation: 仙台市民会館
  • Year and Date: 2014-11-12 – 2014-11-14
• [Presentation] Mixing of longitudinal and transverse dynamics in monatomic liquids from molecular dynamics (2014)
  • Author(s): S. Munejiri and K. Hoshino
  • Organizer: 9th Liquid Matter Conference
  • Place of Presentation: Lisbon, Portugal
  • Year and Date: 2014-07-21 – 2014-07-25
• [Presentation] 液体の構造と横波 (2014)
  • Author(s): 宗尻修治
  • Organizer: 日本物理学会 第69回年次大会
  • Place of Presentation: 東海大学湘南キャンパス
• [Presentation] Mixing of transverse and longitudinal modes in monatomic liquids from molecular dynamics (2013)
  • Author(s): Shuji MUNEJIRI
  • Organizer: 15th international conference on liquid and amorphous metals (materials)(LAM15)
  • Place of Presentation: Friendship Hotel, Beijing, China
  • Invited
• [Presentation] Transverse and longitudinal modes in liquids from molecular-dynamics simulations (2013)
  • Author(s): Shuji MUNEJIRI and Kozo Hoshino
  • Organizer: 第3回分子シミュレーション国際会議
  • Place of Presentation: 神戸国際会議場
• [Presentation] 液体中の横波：分子動力学法により見出された新奇現象 (2013)
  • Author(s): 宗尻修治
  • Organizer: 日本物理学会 第68回年次大会
  • Place of Presentation: 広島大学
  • Invited
• [Presentation] 液体中の縦波と横波のmixing機構 (2012)
  • Author(s): 宗尻修治、星野公三
  • Organizer: 第26回 分子シミュレーション討論会
  • Place of Presentation: 九州大学 西新プラザ