• 文献标题:   Dual-trap system to study charged graphene nanoplatelets in high vacuum
  • 文献类型:   Article
  • 作  者:   COPPOCK JE, NAGORNYKH P, MURPHY JPJ, MCADAMS IS, KATRAGADDA S, KANE BE
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF THE OPTICAL SOCIETY OF AMERICA BOPTICAL PHYSICS
  • ISSN:   0740-3224 EI 1520-8540
  • 通讯作者地址:   Univ Maryland
  • 被引频次:   3
  • DOI:   10.1364/JOSAB.34.000C36
  • 出版年:   2017

▎ 摘  要

We discuss the design and implementation of a system to generate charged multilayer graphene nanoplatelets and introduce a nanoplatelet into a quadrupole ion trap under vacuum. Levitation decouples the platelet from the environment and enables sensitive mechanical and magnetic measurements. The platelets are generated via liquid exfoliation of graphite pellets and charged via electrospray ionization. A single platelet is trapped at a pressure of several hundred millitorr and transferred to a trap in a second chamber, which is pumped to ultra high vacuum pressures for further study. (C) 2017 Optical Society of America