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Two-dimensional materials offer exceptional tunability of electronic and optical properties via strain and doping engineering. However, the unintentional introduction of polymeric residues during wet chemical 2D film transfer processes such…

The possibility of spatially resolving the optical properties of atomically thin materials is especially appealing as they can be modulated at the micro- and nanoscale by reducing their thickness, changing the doping level or applying a…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 Andres Castellanos-Gomez , Jorge Quereda , Herko P. van der Meulen , Nicolás Agraït , Gabino Rubio-Bollinger

Atomically thin two-dimensional semiconducting transition metal dichalcogenides (TMDs) can withstand large levels of strain before their irreversible damage occurs. This unique property offers a promising route for control of the optical…

We use all-atom molecular dynamics simulations informed by density functional theory calculations to investigate aqueous ion transport across sub-nanoporous monolayer molybdenum disulfide (MoS$_2$) membranes subject to varying tensile…

Applied Physics · Physics 2019-01-28 A. Fang , K. Kroenlein , A. Smolyanitsky

Carbon nanotubes (CNTs) are a one-dimensional material system with intriguing physical properties that lead to emerging applications. While CNTs are unusually strain resistant compared to bulk materials, their optical-absorption spectrum is…

Computational Physics · Physics 2019-02-22 Christian Wagner , Jörg Schuster , André Schleife

Strain is attracting much interest as a mean to tune the properties of thin exfoliated two-dimensional materials and their heterostructures. Numerous devices to apply tunable uniaxial strain are proposed in the literature, but only few for…

Two-dimensional (2D) layered materials provide an ideal platform for engineering electronic and optical properties through strain control because of their extremely high mechanical elasticity and sensitive dependence of material properties…

Materials Science · Physics 2022-09-27 Yueyang Yu , Chuan-Ding Dong , Rolf Binder , Stefan Schumacher , Cun-Zheng Ning

Large area MoS2 and WS2 van der Waals epitaxial thin films with complete control over number of layers including monolayer is grown by pulsed laser deposition utilizing slower growth kinetics. The films grown on c-plane sapphire show…

High throughput characterization and processing techniques are becoming increasingly necessary to navigate multivariable, data-driven design challenges for sensors and electronic devices. For two-dimensional materials, device performance is…

Strain presents a straightforward tool to tune electronic properties of atomically thin nanomaterials that are highly sensitive to lattice deformations. While the influence of strain on the electronic band structure has been intensively…

Mesoscale and Nanoscale Physics · Physics 2017-07-26 Maja Feierabend , Alexandre Morlet , Gunnar Berghäuser , Ermin Malic

Residual strain plays a critical role in determining the crystalline quality of nitride epitaxial layers and in modifying their band structure; this often leads to several interesting physical phenomena. It is found, for example, that…

Materials Science · Physics 2015-05-27 T. K. Sharma , Doron Naveh , E. Towe

The exciton states of strained CdTe/CdS core-shell tetrapod-shaped nanocrystals were theoretically investigated by the numerical diagonalization of a configuration interaction Hamiltonian based on the single-band effective mass…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 Yuanzhao Yao , Takashi Kuroda , Dmitry N. Dirin , Maria S. Sokolikova , Roman B. Vasiliev

A new two-dimensional material, the C$_2$N holey 2D (C$_2$N-$h$2D) crystal, has recently been synthesized. Here we investigate the strain effects on the properties of this new material by first-principles calculations. We show that the…

Materials Science · Physics 2015-12-10 Shan Guan , Yingchun Cheng , Chang Liu , Junfeng Han , Yunhao Lu , Shengyuan A. Yang , Yugui Yao

Strain has a strong effect on the properties of materials and the performance of electronic devices. Their ever shrinking size translates into a constant demand for accurate and precise measurement methods with very high spatial resolution.…

The possibility of tailoring the critical strain of 2D materials will be crucial for the fabrication of flexible devices. In this paper, the fracture in polycrystalline MoS2 films with two different grain orientations is studied at the…

Applied Physics · Physics 2019-12-03 M. Sledzinska , G. Jumbert , M. Placidi , A. Arrighi , P. Xiao , F. Alzina , C. M. Sotomayor Torres

Atomically thin two-dimensional (2D) transition metal dichalcogenides (TMDCs) are attractive materials for next generation nanoscale optoelectronic applications. Understanding nanoscale optical behavior of the edges and grain boundaries of…

Mesoscale and Nanoscale Physics · Physics 2016-10-07 A. E. Yore , K. K. H. Smithe , W. Crumrine , A. Miller , J. A. Tuck , B. Redd , E. Pop , Bin Wang , A. K. M. Newaz

The optical gain of blue light-emitting electrospun polystyrene fibers doped with a linear multi-fragment molecular dye based on the combination of fluorine-carbazole functional units is investigated, with the aim of correlating emission…

We study the effect of substrate induced strain on the structural, transport, optical and electronic properties of Sr$_2$CoNbO$_6$ double perovskite thin films. The reciprocal space mapping, $\phi$-scan and high-resolution…

Materials Science · Physics 2020-08-19 Ajay Kumar , Rishabh Shukla , Akhilesh Pandey , Sandeep Dalal , M. Miryala , K. Ueno , M. Murakami , R. S. Dhaka

We present photoluminescence (PL) spectroscopy measurements of single-layer MoSe2 as a function of uniform uniaxial strain. A simple clamping and bending method is described that allows for application of uniaxial strain to layered, 2D…

Layered materials such as graphite and transition metal dichalcogenides have extremely anisotropic mechanical properties owing to orders of magnitude difference between in-plane and out-of-plane interatomic interaction strengths. Although…

Materials Science · Physics 2017-11-10 Jae-Ung Lee , Sungjong Woo , Jaesung Park , Hee Chul Park , Young-Woo Son , Hyeonsik Cheong
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