2D Heterostructures Condensed Matter
// 2022
Designing Twisted Bilayer Graphene Based Devices
Master's Thesis at Karlsruhe Institute of Technology (KIT)
Abstract
Project involved designing and standardizing a step-by-step nanofabrication and assembly procedure for hBN encapsulated twisted Bilayer Graphene (tBLG) stacks under Dr. Romain Danneau.
Table of Contents / Outline
Master’s Thesis Overview
Conducted at the Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) under the supervision of Dr. Romain Danneau.
Twisted Bilayer Graphene (tBLG) exhibits flat electronic bands and correlated electron phenomena (including unconventional superconductivity and Mott-like insulating states) when oriented precisely at the ‘magic angle’ ().
Key Contributions
- Standardized a reproducible, ultra-clean ‘tear-and-stack’ dry transfer assembly technique using PMMA and PDMS stamps.
- Encapsulated graphene with hexagonal Boron Nitride (hBN) to achieve atomic flatness, minimize disorder, and protect interfaces from ambient degradation.
- Designed lithographic masks and metallization workflows for quantum transport measurements at cryogenic temperatures.