# A dual-trap system for the study of charged rotating graphene nanoplatelets in high vacuum

## TL;DR

This paper presents a dual-trap system for generating, charging, and trapping charged graphene nanoplatelets in high vacuum, enabling precise mechanical and magnetic measurements of these 2D materials.

## Contribution

The novel dual-trap setup allows for the generation, charging, and transfer of graphene nanoplatelets into ultra-high vacuum for advanced studies.

## Key findings

- Successful trapping of charged graphene nanoplatelets in high vacuum.
- Decoupling of nanoplatelets from environment for sensitive measurements.
- Effective transfer of nanoplatelets between chambers at different pressures.

## Abstract

We discuss the design and implementation of a system for generating charged multilayer graphene nanoplatelets and introducing a nanoplatelet into a quadrupole ion trap in high vacuum. Levitation decouples the platelet from its 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 UHV pressures for further study.