401 citations · 1.7k across the 12 of their papers we have counts for
11 papers · 1 filter
Dual-gated graphene devices for near-field nano-imaging
Sai S. Sunku, Dorri Halbertal, Rebecca Engelke +11
Graphene-based heterostructures display a variety of phenomena that are strongly tunable by electrostatic local gates. Monolayer graphene (MLG) exhibits tunable surface plasmon pol…
Nano-photocurrent mapping of local electronic structure in twisted bilayer graphene
Sai S. Sunku, Alexander S. McLeod, Tobias Stauber +10
We report a combined nano-photocurrent and infrared nanoscopy study of twisted bilayer graphene (TBG) enabling access to the local electronic phenomena at length scales as short as…
Photonic crystals for nano-light in moiré graphene superlattices
S. S. Sunku, G. X. Ni, B. -Y. Jiang +10
Graphene is an atomically thin plasmonic medium that supports highly confined plasmon polaritons, or nano-light, with very low loss. Electronic properties of graphene can be drasti…
Plasmon reflections by topological electronic boundaries in bilayer graphene
Bor-Yuan Jiang, Guang-Xin Ni, Zachariah Addison +7
Domain walls separating regions of AB and BA interlayer stacking in bilayer graphene have attracted attention as novel examples of structural solitons, topological electronic bound…
Tuning Optical Conductivity of Large-Scale CVD Graphene by Strain Engineering
Guang-Xin Ni, Hong-Zhi Yang, Wei Ji +5
Strain engineering has been recently recognized as an effective way to tailor the electrical properties of graphene. In the optical domain, effects such as strain-induced anisotrop…
An innovative way of etching MoS2: Characterization and mechanistic investigation
Yuan Huang, Jing Wu, Xiangfan Xu +9
We report a systematic study of the etching of MoS2 crystals by using XeF2 as a gaseous reactant. By controlling the etching process, monolayer MoS2 with uniform morphology can be…
Quasi-Periodic Nanoripples in Graphene Grown by Chemical Vapor Deposition and Its Impact on Charge Transport
Guang-Xin Ni, Yi Zheng, Sukang Bae +8
The technical breakthrough in synthesizing graphene by chemical vapor deposition methods (CVD) has opened up enormous opportunities for large-scale device applications. In order to…
Graphene-Ferroelectric Hybrid Structure for Flexible Transparent Electrodes
Guang-Xin Ni, Yi Zheng, Sukang Bae +6
Graphene has exceptional optical, mechanical and electrical properties, making it an emerging material for novel optoelectronics, photonics and for flexible transparent electrode a…
Wafer-scale graphene/ferroelectric hybrid devices for low-voltage electronics
Yi Zheng, Guang-Xin Ni, Sukang Bae +9
Preparing graphene and its derivatives on functional substrates may open enormous opportunities for exploring the intrinsic electronic properties and new functionalities of graphen…
Graphene field effect transistors with ferroelectric gating
Yi Zheng, Guang-Xin Ni, Chee-Tat Toh +3
Recent experiments on ferroelectric gating have introduced a novel functionality, i.e. nonvolatility, in graphene field effect transistors. A comprehensive understanding in the non…
Gate-controlled non-volatile graphene-ferroelectric memory
Yi Zheng, Guang-Xin Ni, Chee-Tat Toh +4
In this letter, we demonstrate a non-volatile memory device in a graphene FET structure using ferroelectric gating. The binary information, i.e. "1" and "0", is represented by the…