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Two-dimensional (2D) materials are a new class of materials with interesting physical properties and ranging from nanoelectronics to sensing and photonics. In addition to graphene, the most studied 2D material, monolayers of other layered…

Mesoscale and Nanoscale Physics · Physics 2013-06-25 Branimir Radisavljevic , Andras Kis

Engineering optical properties, such as luminescence purity and charge transfer, is crucial for harnessing the application potential of atomically thin transition metal dichalcogenides (TMDCs). While electrostatic gating is widely applied…

We demonstrate monolayer MoS2 grown by chemical vapor deposition (CVD) with transport properties comparable to those of the best exfoliated devices over a wide range of carrier densities (up to ~10^13 1/cm^2) and temperatures (80-500 K).…

Materials Science · Physics 2016-12-01 Kirby K. H. Smithe , Chris D. English , Saurabh V. Suryavanshi , Eric Pop

The emergence of transition metal dichalcogenides (TMD) as crystalline atomically thin semiconductors has created a tremendous amount of scientific and technological interest. Many novel device concepts have been proposed and realized…

Mesoscale and Nanoscale Physics · Physics 2020-10-19 Woojoo Lee , Yi Lin , Li-Shuan Lu , Wei-Chen Chueh , Mengke Liu , Xiaoqin Li , Wen-Hao Chang , Robert A. Kaindl , Chih-Kang Shih

Using a computational approach based on the driven diffusion equation for dipolariton wave packets, we simulate the diffusive dynamics of dipolaritons in an optical microcavity embedded with a transition-metal dichalcogenide (TMDC)…

Materials Science · Physics 2021-12-22 Patrick Serafin , German Kolmakov

Semiconducting monolayer of 2D material are able to concatenate multiple interesting properties into a single component. Here, by combining opto-mechanical and electronic measurements, we demonstrate the presence of a partial 2H-1T phase…

Understanding the stress transfer mechanisms from a polymer matrix to two-dimensional reinforcements is essential for the preparation of high performance nanocomposites. In this study, the interfacial stress transfer from a flexible polymer…

Materials Science · Physics 2022-10-19 Ming Dong , Robert J. Young , David J. Dunstan , Dimitrios G. Papageorgiou

Transition metal dichalcogenides (TMDs) display a rich variety of instabilities such as spin and charge orders, Ising superconductivity and topological properties. Their physical properties can be controlled by doping in electric…

Two-dimensional transition metal dichalcogenides (TMDCs) are finding promising electronic and optical applications due to their unique properties. In this letter, we systematically study the phonon transport and thermal conductivity of…

Materials Science · Physics 2014-09-30 Xiaokun Gu , Ronggui Yang

This work presents a physics based compact model for SiC power MOSFETs that accurately describes the I-V characteristics up to large voltages and currents. Charge-based formulations accounting for the different physics of SiC power MOSFETs…

Systems and Control · Electrical Eng. & Systems 2021-05-03 Cristino Salcines , Sourabh Khandelwal , Ingmar Kallfass

Ballistic transport characteristics of metal-oxide semiconductor field effect transistors (MOSFETs) based on anisotropic two-dimensional (2-D) materials monolayer HfS2 and phosphorene are explored through quantum transport simulations. We…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Jiwon Chang

Application of transition metal dichalcogenides (TMDC) in photonic, optoelectronic or valleytronic devices requires the growth of continuous monolayers, heterostructures and alloys of different materials in a single process. We present a…

Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a…

Monolayer transition metal dichalcogenides (TMDCs) are promising materials for next-generation optoelectronic devices, owing to their strong excitonic responses and atomic thickness. Controlling their light emission electrically is a…

We discuss the effect of the dielectric environment (insulators and metal gates) on electronic transport in two-dimensional (2D) transition metal dichalcogenides (TMD) monolayers. We employ well-known ab initio methods to calculate the…

Mesoscale and Nanoscale Physics · Physics 2022-08-24 Sanjay Gopalan , Maarten L. Van de Put , Gautam Gaddemane , Massimo V. Fischetti

Transition metal dichalcogenides (TMDs) are van der Waals layered materials with sizable and tunable bandgaps, offering promising platforms for two-dimensional electronics and optoelectronics. To this end, the bottleneck is how to acquire…

Materials Science · Physics 2020-10-13 Hao Li , Junku Liu , Nan Guo , Lin Xiao , Haoxiong Zhang , Shuyun Zhou , Yang Wu , Shoushan Fan

We present a microscopic model of a charge carrier transfer under an action of a constant electric field in a complex medium. Generalizing previous theoretical approaches, we model the dynamical environment hindering the carrier motion by…

Statistical Mechanics · Physics 2009-11-11 O. Benichou , J. Klafter , M. Moreau , G. Oshanin

Quantum conductance calculations on the mechanically deformed monolayers of MoS$_2$ and WS$_2$ were performed using the non-equlibrium Green's functions method combined with the Landauer-B\"{u}ttiker approach for ballistic transport…

Materials Science · Physics 2014-03-04 Mahdi Ghorbani-Asl , Stefano Borini , Agnieszka Kuc , Thomas Heine

We realize and investigate ionic liquid gated field-effect transistors (FETs) on large-area MoS2 monolayers grown by chemical vapor deposition (CVD). Under electron accumulation, the performance of these devices is comparable to that of…

Mesoscale and Nanoscale Physics · Physics 2016-02-05 Evgeniy Ponomarev , Ignacio Gutiérrez-Lezama , Nicolas Ubrig , Alberto F. Morpurgo

Due to their unique two-dimensional nature, charge carriers in semiconducting transition metal dichalcogenides (TMDs) exhibit strong unscreened Coulomb interactions and sensitivity to defects and impurities. The versatility of van der Waals…

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