5 papers · 1 filter
Internal nanostructure diagnosis with hyperbolic phonon polaritons in hexagonal boron nitride
Siyuan Dai, Mykhailo Tymchenko, Zai-quan Xu +10
Imaging materials and inner structures with resolution below the diffraction limit has become of fundamental importance in recent years for a wide variety of applications. In this…
Enhanced Superconductivity and Suppression of Charge-density Wave Order in 2H-TaS in the Two-dimensional Limit
Yafang Yang, Shiang Fang, Valla Fatemi +6
As superconductors are thinned down to the 2D limit, their critical temperature typically decreases. Here we report the opposite behavior, a substantial enhancement of …
Manipulation and steering of hyperbolic surface polaritons in hexagonal boron nitride
S. Dai, M. Tymchenko, Y. Yang +8
Hexagonal boron nitride (hBN) is a natural hyperbolic material that supports both volume-confined hyperbolic polaritons (HPs) and sidewall-confined hyperbolic surface polaritons (H…
Relative efficiency of polariton emission in two-dimensional materials
Siyuan Dai, Qiong Ma, Yafang Yang +15
We investigated emission and propagation of polaritons in a two dimensional van der Waals material hexagonal boron nitride (hBN). Our specific emphasis in this work is on hyperboli…
Self-aligned local electrolyte gating of 2D materials with nanoscale resolution
Cheng Peng, Dmitri K. Efetov, Sebastien Nanot +8
In the effort to make 2D materials-based devices smaller, faster, and more efficient, it is important to control charge carrier at lengths approaching the nanometer scale. Traditio…