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Atomically thin layers of two-dimensional (2D) materials such as graphene, MoS2 and h-BN have immense potential as sensors and electronic devices thanks to their highly desirable electronic, mechanical, optical and heat transport…

Mesoscale and Nanoscale Physics · Physics 2015-09-03 Nicholas D. Kay , Peter D. Tovee , Benjamin J. Robinson , Konstantin S. Novoselov , Oleg V. Kolosov

Wafer-scale growth of two-dimensional semiconductors remains a key challenge for their integration into photonic technologies. While most studies of two-dimensional semiconductors have focused on transition metal dichalcogenides and their…

Semiconductor research has shifted towards exploring two-dimensional (2D) materials as candidates for next-generation electronic devices due to the limitations of existing silicon technology. Transition Metal Dichalcogenides (TMDCs) stand…

Mesoscale and Nanoscale Physics · Physics 2024-09-12 Sameer Kumar Mallik

Ideal monolayers of common semiconducting transition metal dichalcogenides (TMDCs) such as MoS$_2$, WS$_2$, MoSe$_2$, and WSe$_2$ possess many similar electronic properties. As it is the case for all semiconductors, however, the physical…

Molybdenum disulfide (MoS$_2$) nanosheet is a two-dimensional material with high electron mobility and with high potential for applications in catalysis and electronics. We synthesized MoS$_2$ nanosheets using a one-pot wet-chemical…

Materials Science · Physics 2021-02-11 Se-Ho Kim , Joohyun Lim , Rajib Sahu , Olga Kasian , Leigh T. Stephenson , Christina Scheu , Baptiste Gault

Ti$_3$C$_2$T$_X$ nano-sheets (MXenes) are an emerging class of two-dimensional materials with outstanding potential to be employed in energy storage, catalysis, and triboelectric applications, on length scales ranging from the nano- to…

Applied Physics · Physics 2021-10-06 A. Rodriguez , M. S. Jaman , O. Acikgoz , B. Wang , J. Yu , P. G. Grutzmacher , A. Rosenkranz , M. Z. Baykara

Two-dimensional (2D) transition metal dichalcogenides have emerged as a promising platform for next-generation optoelectronic and spintronic devices. Mechanical exfoliation using adhesive tape remains the dominant method for preparing 2D…

MXenes are a family of two-dimensional (2D) carbides and nitrides that display extraordinary electrical, optical, chemical, and electrochemical properties. There is a perception that MXenes are unstable and degrade quickly, limiting…

Applied Physics · Physics 2023-12-20 Asaph Lee , Mikhail Shekhirev , Mark Anayee , Yury Gogotsi

A plethora of different morphologies are fabricated by the self assembly of molybdenum disulphide (MoS2) exfoliated flakes with the help of Langmuir-Blodgett (LB) technique at the liquid/air interface. The MoS2 flakes are chemically…

Materials Science · Physics 2017-01-11 Harneet Kaur , Ved Varun Agrawal , Ritu Srivastava

The polymer nanocomposites find applications in diverse areas ranging from smart materials to bioengineering. They are developed by dispersion of nanomaterials in a bulk phase of a polymeric material. Although several methods facilitate…

Materials Science · Physics 2021-04-07 Shital Rokade , Prasoon Kumar

Low-dimensional multiferroic materials hold great promises in miniaturized device applications such as nanoscale transducers, actuators, sensors, photovoltaics, and nonvolatile memories. Here, using first-principles theory we predict that…

Materials Science · Physics 2017-01-18 Hua Wang , Xiaofeng Qian

We fabricate freely suspended nanosheets of MoS2 which are characterized by quantitative optical microscopy and high resolution friction force microscopy. We study the elastic deformation of freely suspended nanosheets of MoS2 using an…

Transition metal dichalcogenides (TMDCs) are promising materials for applications in nanoelectronics and correlated fields, where their metallic edge states play a fundamental role in the electronic transport. In this work, we investigate…

Mesoscale and Nanoscale Physics · Physics 2023-01-24 Armando Pezo , Matheus P. Lima , Marcio Costa , Adalberto Fazzio

Atomically thin oxides are increasingly recognized as an emerging class of 2D materials, yet their multifunctional properties have been far less investigated compared to other layered materials. Among these, gallium oxide is distinguished…

Solution-processable two-dimensional (2D) semiconductors with chemically tunable thickness and associated tunable band gaps are highly promising materials for ultrathin optoelectronics. Here, the properties of free charge carriers and…

Recently emerged layered transition metal dichalcogenides have attracted great interest due to their intriguing fundamental physical properties and potential applications in optoelectronics. Using scattering-type scanning near-field optical…

Mesoscale and Nanoscale Physics · Physics 2018-10-04 Viktoriia E. Babicheva , Sampath Gamage , Lee Zhen , Stephen B. Cronin , Vladislav S. Yakovlev , Yohannes Abate

Propagating atomic vibrational waves, phonons, rule important thermal, mechanical, optoelectronic and transport characteristics of materials. Thus the knowledge of phonon dispersion, namely the dependence of vibrational energy on momentum…

Materials Science · Physics 2019-10-09 Ryosuke Senga , Kazu Suenaga , Paolo Barone , Shigeyuki Morishita , Francesco Mauri , Thomas Pichler

In this work, we conduct a comprehensive first-principles investigation into the design and discovery of novel antimony oxychalcogenide monolayers Sb2X2O (X = S, Se) and Janus Sb2SSeO, examining their structural stability, elastic,…

Mesoscale and Nanoscale Physics · Physics 2026-02-10 Masoud Shahrokhi , Bohayra Mortazavi

Point defects in the binary group-IV monochalcogenide monolayers of SnS, SnSe, GeS, GeSe are investigated using density-functional-theory calculations. Several stable configurations are found for oxygen defects, however we give evidence…

Mesoscale and Nanoscale Physics · Physics 2016-08-17 Lídia C. Gomes , A. Carvalho , A. H. Castro Neto

The two-dimensional ferroelectrics GeS, GeSe, SnS and SnSe are expected to have large spontaneous in-plane electric polarization and enhanced shift-current response. Using density functional methods, we show that these materials also…

Mesoscale and Nanoscale Physics · Physics 2017-10-03 Suman Raj Panday , Benjamin M. Fregoso