中国物理B ›› 2025, Vol. 34 ›› Issue (1): 14202-014202.doi: 10.1088/1674-1056/ad886c
Giant enhancement of negative friction by resonant coupling between localized surface phonon polaritons and graphene plasmonics
Kaipeng Liu(柳开鹏)1, Shuai Zhou(周帅)1,3, Shiwei Dai(戴士为)2, and Lixin Ge(葛力新)1,†
- 1 School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China;
2 College of Mathematics and Physics, Chengdu University of Technology, Chengdu 610059, China;
3 Department of Basic Courses, Zhengzhou University of Science and Technology, Zhengzhou 450064, China
Giant enhancement of negative friction by resonant coupling between localized surface phonon polaritons and graphene plasmonics
Kaipeng Liu(柳开鹏)1, Shuai Zhou(周帅)1,3, Shiwei Dai(戴士为)2, and Lixin Ge(葛力新)1,†
- 1 School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China;
2 College of Mathematics and Physics, Chengdu University of Technology, Chengdu 610059, China;
3 Department of Basic Courses, Zhengzhou University of Science and Technology, Zhengzhou 450064, China
摘要： Negative friction refers to a frictional force that acts in the same direction as the motion of an object, which has been predicted in terahertz (THz) gain systems [Phys. Rev. B 108 045406 (2023)]. In this work, we investigate the enhancement of the negative friction experienced by nanospheres placed near a graphene substrate. We find that the magnitude of negative friction is related to the resonant coupling between the surface plasmon polaritons (SPPs) of the graphene and localized surface phonon polaritons (LSPhP) of nanospheres. We exam nanospheres consisted of several different materials, including SiO$_{2}$, SiC, ZnSe, NaCl, lnSb. Our results suggest that the LSPhP of NaCl nanospheres match effectively with the amplified SPPs of graphene sheets. The negative friction for NaCl nanospheres can be enhanced about one-to-two orders of magnitude compared to that of silica (SiO$_{2}$) nanospheres. At the resonant peak of negative friction, the required quasi-Fermi energy of graphene is lower for NaCl nanospheres. Our finds hold great prospects for the mechanical manipulations of nanoscale particles.
中图分类号: (Quantum fluctuations, quantum noise, and quantum jumps)
- 42.50.Lc