440 citations · 1.2k across the 8 of their papers we have counts for
8 papers
Correlation-Driven Electron-Hole Asymmetry in Graphene Field Effect Devices
Nicholas Dale, Ryo Mori, M. Iqbal Bakti Utama +13
Electron-hole asymmetry is a fundamental property in solids that can determine the nature of quantum phase transitions and the regime of operation for devices. The observation of e…
Ultra-high-resolution imaging of moiré lattices and superstructures using scanning microwave impedance microscopy under ambient conditions
Kyunghoon Lee, M. Iqbal Bakti Utama, Salman Kahn +13
Two-dimensional heterostructures with layers of slightly different lattice vectors exhibit a new periodic structure known as moire lattices. Moire lattice formation provides a powe…
High-Performance Atomically-Thin Room-Temperature NO2 Sensor
Amin Azizi, Mehmet Dogan, Hu Long +7
The development of room-temperature sensing devices for detecting small concentrations of molecular species is imperative for a wide range of low-power sensor applications. We demo…
Visualization of the flat electronic band in twisted bilayer graphene near the magic angle twist
M. Iqbal Bakti Utama, Roland J. Koch, Kyunghoon Lee +15
Bilayer graphene was theorized to host a moire miniband with flat dispersion if the layers are stacked at specific twist angles known as the magic angles. Recently, such twisted bi…
Short-Channel Field Effect Transistors with 9-Atom and 13-Atom wide Graphene Nanoribbons
Juan Pablo Llinas, Andrew Fairbrother, Gabriela Borin Barin +21
Bottom-up synthesized GNRs and GNR heterostructures have promising electronic properties for high performance field effect transistors (FETs) and ultra-low power devices such as tu…
Evidence for Extraction of Photoexcited Hot Carriers from Graphene
Chang-Hua Liu, Nanditha M. Dissanayake, Seunghyun Lee +2
We report evidence of nonequilibrium hot carriers extraction from graphene by gate-dependent photocurrent study. Scanning photocurrent excited by femtosecond pulse laser shows unus…
Homogeneous bilayer graphene film based flexible transparent conductor
Seunghyun Lee, Kyunghoon Lee, Chang-Hua Liu +1
Graphene is considered a promising candidate to replace conventional transparent conductors due to its low opacity, high carrier mobility and flexible structure. Multi-layer graphe…
Wafer Scale Homogeneous Bilayer Graphene Films by Chemical Vapor Deposition
Seunghyun Lee, Kyunghoon Lee, Zhaohui Zhong
The discovery of electric field induced bandgap opening in bilayer graphene opens new door for making semiconducting graphene without aggressive size scaling or using expensive sub…