대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제31권5호
  • /
  • Pages.435-447
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  • 2007
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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나노스케일 계의 상태기준에 관한 연구

A Study on the Phase Criteria of Nanoscale Systems

  • 임민종 (부산대학교 대학원 기계공학과) ;
  • 최경민 (부산대학교 기계공학과) ;
  • 김덕줄 (부산대학교 기계공학과) ;
  • 정한식 (경상대학교 정밀기계공학과) ;
  • 정효민 (경상대학교 정밀기계공학과) ;
  • 최순호 (경상대학교 친환경냉열에너지기계연구사업팀)
  • 발행 : 2007.05.01
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초록

Recently, as MEMS and NEMS devices have been widely used in the various engineering applications, the characteristics of nanoscale systems are investigated in the limelight. However, as opposed to a macroscale system, the identification of the state of nanoscale systems is extremely hard because they can include only the order of $10^3{\sim}10^5$ molecules, which requires highly expensive and accurate experimental apparatus for an investigation. This limitations make the study on nanoscale system use computer simulations. Therefore, it is strongly required to identify the state of nanoscale system simulated in computer simulation. In this molecular dynamics(MD) study, we suggest that the potential energy of individual molecule can be used as criterion for defining the state of clusters or nanoscale systems. In addition, we compared the phase state from the potential energy with one from the radial distribution function(RDF) for verification. The comparison showed that the intermolecular potential energy can be used as a criteria distinguishing the phase state of nanoscale systems.

키워드

참고문헌

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