Title
Tuning the optical, magnetic, and electrical properties of <tex>$ReSe_{2}$</tex> by nanoscale strain engineering Tuning the optical, magnetic, and electrical properties of <tex>$ReSe_{2}$</tex> by nanoscale strain engineering
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Washington ,
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (journal)
Nano letters / American Chemical Society. - Washington
Volume/pages
15(2015) :3 , p. 1660-1666
ISSN
1530-6984
ISI
000351188000033
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Creating materials with ultimate control over their physical properties is vital for a wide range of applications. From a traditional materials design perspective, this task often requires precise control over the atomic composition and structure. However, owing to their mechanical properties, low-dimensional layered materials can actually withstand a significant amount of strain and thus sustain elastic deformations before fracture. This, in return, presents a unique technique for tuning their physical properties by strain engineering. Here, we find that local strain induced on ReSe2, a new member of the transition metal dichalcogenides family, greatly changes its magnetic, optical, and electrical properties. Local strain induced by generation of wrinkle (1) modulates the optical gap as evidenced by red-shifted photoluminescence peak, (2) enhances light emission, (3) induces magnetism, and (4) modulates the electrical properties. The results not only allow us to create materials with vastly different properties at the nanoscale, but also enable a wide range of applications based on 2D materials, including strain sensors, stretchable electrodes, flexible field-effect transistors, artificial-muscle actuators, solar cells, and other spintronic, electromechanical, piezoelectric, photonic devices.
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