--- 研究领域介绍(纳米器件性能提升的理论基础) ---
纳机电谐振器是近些年广受关注的介观系统之一,可用于纳米尺度超灵敏传感及信号处理[1,2],本课题组利用分子动力学模拟方法[3]重点研究如下问题:
1)纳机电谐振器中的热化规律[4]. 该研究方向试图理解由于模式耦合导致的模式间能量扩散,试图给出提升器件品质因子的理论基础
2)纳机电谐振器中的模式耦合和调控[1]. 该研究方向试图找出微纳器件模式耦合的物理机制
3)纳米尺度反常热输运[5,6]. 通过研究该问题,我们试图提出热管理器件的设计方案。
参考文献:
[1] Bachtold A, Moser J, Dykman M I. Mesoscopic physics of nanomechanical systems, Rev. Mod. Phys. 94, 045005 (2022).
[2] Bo Xu, Pengcheng Zhang et. al., Nanomechanical Resonators: Toward Atomic Scale, ACS Nano 16, 15545 (2022)
[3] 严六明,朱素华,分子动力学模拟的理论与实践,科学出版社,2013
[4] Wang Z, Fu W, Zhang Y, Zhao H. Wave-Turbulence Origin of the Instability of Anderson Localization against Many-Body Interactions, Phys. Rev. Lett. 124, 186401 (2020).
[5] 赵鸿, 王矫等,低维晶格系统能量传导与扩散研究,中国科学: 物理学 力学 天文学 51,030012 (2021).
[6] 罗天麟, 丁亚飞等,维微纳尺度体系声子热传导和热调控: 来自芯片散热的非平衡统计物理问题, 物理学报 72, 234401 (2023).
--- 组会信息 ---
组会时间为每周六下午2:30,地点在格致楼2021!欢迎对纳米科学、数值模拟感兴趣的本科生和研究生参加!
(# 共同一作, * 通讯作者)
8. Hou-Qiang Teng, Jia-Qi Dong*, Yisen Wang, Liang Huang*, and Peng Xu, "Damping separation of finite open systems in gravity-related experiments in the free molecular flow regime", Phys. Rev. D 109, 083022 (2024)
7. Zhigang Zhu*, Xiaofeng Zhang, Yisen Wang, and Jun Ma, "Functional Responses of Autaptic Neural Circuits to Acoustic Signals", Int. J. Bifurc. Chaos 33, 233009 (2023)
6. Jia-Qi Dong, Wen-Hui Han, Yisen Wang, Xiao-Song Chen, and Liang Huang, "Universal cover-time distribution of heterogeneous random walks", Phys. Rev. E 107, 024128 (2023).
5. Yi Dai, Hang Yu, Zhigang Zhu, Yisen Wang*, Liang Huang, “Discrete breathers and energy localization in a nonlinear honeycomb lattice”, Phys. Rev. E 104, 064201 (2021).
4. Yisen Wang, Liang Huang*, “Flexural modes of graphene resonators derived from the reactive empirical bond-order potential”, Phys. Rev. B 101, 195409 (2020).
3. Yisen Wang, Zhigang Zhu, Yong Zhang, Liang Huang*, “Symmetry blockade and its breakdown in energy equipartition of square graphene resonators”, Appl. Phys. Lett. 112, 111910 (2018).
2. Yisen Wang, Zhigang Zhu, Yong Zhang, Liang Huang*, “Metastable states and energy flow pathway in square graphene resonators”, Phys. Rev. E 97, 012143 (2018).
1. Mengke Xu(#), Yisen Wang(#), Rui Bao, Liang Huang*, Ying-Cheng Lai, “Complex transport behaviors of rectangular graphene quantum dots subject to mechanical vibrations”, Europhys. Lett. 114, 47006 (2016).