scholarly journals Optical orientation with linearly polarized light in transition metal dichalcogenides

2019 ◽  
Vol 99 (12) ◽  
Author(s):  
G. Catarina ◽  
J. Have ◽  
J. Fernández-Rossier ◽  
N. M. R. Peres
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Polarized Light ◽  
Optical Orientation ◽  
Linearly Polarized ◽  
Metal Dichalcogenides

scholarly journals Improved Transition Metal Dichalcogenides-Based Surface Plasmon Resonance Biosensors

2019 ◽  
Vol 4 (2) ◽  
pp. 49 ◽  
Author(s):  
Mohammad Hasibul Hasan Hasib ◽  
Jannati Nabiha Nur ◽  
Conrad Rizal ◽  
Kamrun Nahar Shushama
Keyword(s):  
Surface Plasmon Resonance ◽  
Transition Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Transition Metal Dichalcogenides ◽  
Polarized Light ◽  
Detection Accuracy ◽  
Metal Dichalcogenides ◽  
Similar Materials ◽  
Improved Performance

Surface plasmon resonance (SPR) biosensors based on transition metal dichalcogenides (TMDC) materials have shown improved performance in terms of sensitivity, detection accuracy (DA), and quality factor (QF) over conventional biosensors. In this paper, we propose a five-layers model containing black phosphorus (BP) and TMDC (Ag/BP/WS2) in Kretschmann configuration. Using TM-polarized light at 633 nm, we numerically demonstrate the highest sensitivity (375°/RIU), DA (0.9210), and QF (65.78 1/RIU) reported so far over similar materials. Refractive index (RI) of the coupling prism has also played an essential role in enhancing the performance of these biosensors. The research on TMDC materials is still new, and these materials bring about opportunities to develop a new class of biosensor.

scholarly journals Floquet band engineering and topological phase transitions in 1T’ transition metal dichalcogenides

2D Materials ◽  
2022 ◽  
Author(s):  
Xiangru Kong ◽  
Wei Luo ◽  
Linyang Li ◽  
Mina Yoon ◽  
Tom Berlijn ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Tight Binding ◽  
Polarized Light ◽  
Quantum Spin ◽  
Topological Phase ◽  
Circularly Polarized Light ◽  
Band Engineering ◽  
Metal Dichalcogenides

Abstract Using ab initio tight-binding approaches, we investigate Floquet band engineering of the 1T’ phase of transition metal dichalcogenides (MX2, M = W, Mo and X = Te, Se, S) monolayers under the irradiation with circularly polarized light. Our first principles calculations demonstrate that light can induce important transitions in the topological phases of this emerging materials family. For example, upon irradiation, Te-based MX2 undergoes a phase transition from quantum spin Hall (QSH) semimetal to time-reversal symmetry broken QSH insulator with a nontrivial band gap of up to 92.5 meV. On the other hand, Se- and S-based MX2 undergoes the topological phase transition from the QSH effect to the quantum anomalous Hall (QAH) effect and into trivial phases with increasing light intensity. From a general perspective, our work brings further insight into non-equilibrium topological systems.

scholarly journals Super-resolved Optical Mapping of Reactive Sulfur-Vacancies in Two-Dimensional Transition Metal Dichalcogenides

ACS Nano ◽  
2021 ◽  
Author(s):  
Miao Zhang ◽  
Martina Lihter ◽  
Tzu-Heng Chen ◽  
Michal Macha ◽  
Archith Rayabharam ◽  
...  
Keyword(s):  
Transition Metal ◽  
Optical Mapping ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Highly electroconductive and uniform WS2 film growth by sulfurization of W film using diethyl sulfide

2021 ◽  
Author(s):  
Yoobeen Lee ◽  
Jin Won Jung ◽  
Jin Seok Lee
Keyword(s):  
Transition Metal ◽  
Grain Boundaries ◽  
High Performance ◽  
Film Growth ◽  
Transition Metal Dichalcogenides ◽  
Electronic Systems ◽  
Intrinsic Defects ◽  
Diethyl Sulfide ◽  
Metal Dichalcogenides

The reduction of intrinsic defects, including vacancies and grain boundaries, remains one of the greatest challenges to produce high-performance transition metal dichalcogenides (TMDCs) electronic systems. A deeper comprehension of the...

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