Phonon-band engineering as a novel approach to modify frictional characteristics of mesoscopic solid materials
Phonon-band engineering as a novel approach to modify frictional characteristics of mesoscopic solid materials
复制标题
声子带工程作为改变介观固体材料摩擦特性的新方法
DOI：
10.1016/s0010-4655(01)00319-8
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发表时间：
2001
影响因子：
6.3
通讯作者：
Akifumi Maeda
中科院分区：
文献类型：
--
作者：
Keiji Hayashi;T. Kanayama;Seiji Kawakita;Syo Sunouchi;M. Takimoto;Y. Kawamura;Akifumi Maeda
采用简化的二维和一维模型，通过分子动力学模拟研究了介观晶格间伴随稳态滑动运动的无磨损摩擦阻力。通过对同位素替代引起的介观晶格摩擦特性变化的系统分析，揭示了介观晶格摩擦特性如何反映晶格界面附近声子态的局域密度。基于这些模拟结果，“声子带工程”利用纳米加工技术，提出了一种新的方法来设计所需的亚微米尺寸的机构和致动器的摩擦特性的人工介观固体材料。
Wearless-frictional resistance accompanying steady sliding motion between mesoscopic lattices is studied by means of molecular dynamics simulations using simplified two- and one-dimensional models. An insight into how the frictional characteristics of a mesoscopic lattice reflect the local density of phonon states around the interface of the lattice was provided by the systematic analyses of change in the characteristics due to the isotope substitution. Based on these simulation results, the “phonon-band engineering” utilizing the nano-fabrication technology is proposed as a novel approach to design artificial mesoscopic solid materials of desired frictional characteristics for sub-micrometer size mechanisms and actuators.