Controllable electronic properties, contact barriers and contact types in a TaSe/WSe metal-semiconductor heterostructure.

Two-dimensional (2D) metallic TaSe and semiconducting WSe materials have been successfully fabricated in experiments and are considered as promising contact and channel materials, respectively, for the design of next-generation electronic devices. Herein, we design a metal-semiconductor (M-S) heterostructure combining metallic TaSe and semiconducting WSe materials and investigate the atomic structure, electronic properties and controllable contact types of the combined TaSe/WSe M-S heterostructure using first-principles calculations. Our results reveal that the TaSe/WSe M-S heterostructure can adopt four different stable stacking configurations, all of which exhibit enhanced elastic constants compared to the constituent monolayers.

Traditional Vietnamese Medicine Containing Garlic Extract for Patients With Non-severe COVID-19: A Phase-II, Double-Blind, Randomized Controlled Trial.

Background Coronavirus disease 2019 (COVID-19) is still ongoing with the omicron variant. Low-cost, effective treatments are still needed, particularly in low-to-middle-income countries. This study assessed the safety and efficacy of TD0068, an herbal medicine developed from mainly garlic, for patients with non-severe COVID-19.

First-principles examination of two-dimensional Janus quintuple-layer atomic structures XCrSiN (X = S, Se, and Te).

In this work, we propose novel two-dimensional Janus XCrSiN (X = S, Se, and Te) single-layers and comprehensively investigate their crystal structure, electronic properties, and carrier mobility by using a first-principles method. These configurations are the combination of the CrSiN material and a transition metal dichalcogenide. The X-Cr-SiN single-layers are constructed by replacing the N-Si-N atomic layer on one side with chalcogen atoms (S, Se, or Te).