• 文献标题:   Casimir energy for acoustic phonons in graphene
  • 文献类型:   Article
  • 作  者:   KOOHSARIAN Y, JAVIDAN K, SHIRZAD A
  • 作者关键词:  
  • 出版物名称:   EPL
  • ISSN:   0295-5075 EI 1286-4854
  • 通讯作者地址:   Ferdowsi Univ Mashhad
  • 被引频次:   1
  • DOI:   10.1209/0295-5075/119/48002
  • 出版年:   2017

▎ 摘  要

We find the Casimir energy, at finite temperature, for acoustic phonons in a graphene sheet suspended over a rectangular trench, and the corresponding Casimir forces are interpreted as correction terms to the built-in tensions of the graphene. We show that these corrections generally break the tensional isotropy of the membrane, and can increase or decrease the membrane tension. We demonstrate that for a narrow rectangular trench with side-lengths in the order of few nanometers and few micrometers, these temperature corrections are expected to be noticeable (similar to 10-4 N/m) at room temperature. These corrections would be even more considerable by increasing the temperature, and can be applied for adjusting the built-in tension of the graphene. Consequently we introduce a corrected version for the fundamental resonance frequency of the graphene resonator. Copyright (C) EPLA, 2017