David J. Henry 博士 特別講演会

日時: 2007年10月01日(月) 15:00〜16:30
場所: 京都大学 工学部物理系校舎 2階 215室
講演者: Dr. David J. Henry (RMIT University)
講演題目: Theoretical Nanoscale Design of Coating Materials
講演要旨:

We are involved in investigating the interaction of nanoscale carbon nanoparticles with organic coating surfaces using theoretical techniques. Our previous adhesion studies indicated that Van der Waals forces contribute significantly to the interfacial strength between polyester films and graphite, and amorphous carbon, while atomic scale surface roughness is found to contribute significantly to reduce adhesion between rigid surfaces. Relaxation of the interfaces sees a decrease in the roughness effects and migration of surface modifiers away from the interface.

This study extends our earlier investigations by examining the interaction of neutral and charged fullerenes with model silica and polyester surfaces. Classical Molecular Dynamics simulations at 298 K indicate that Van der Waals forces are sufficiently strong in most cases to cause physisorption of the neutral fullerene particle on to the surfaces. The separation distance and Work of Separation of C60 with both the silica and polyester surfaces depends greatly on the charge on the particle. Crosslinking and functionalization of the polyester can improve resistance to the neutral fullerene. However, for charged fullerenes, the same functionalization can actually reduce resistance to adhesion.


京都大学大学院 工学研究科 機械理工学専攻 マイクロエンジニアリング専攻 航空宇宙工学専攻
情報学研究科 複雑系科学専攻
京都大学 国際融合創造センター
拠点リーダー 椹木哲夫(工学研究科・機械理工学専攻)
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