A new physical mechanism of plastic deformation in nanowires is suggested and theoretically described. This mechanism represents formation of near-surface nanodisturbances-nanoscopic areas of plastic shear with tiny shear vectors-in deformed nanowires. We calculated the energy characteristics for nanodisturbance formation and compared them with those for conventional dislocation generation. It is shown that the nanodisturbance deformation mode tends to dominate in Au nanowires deformed at high stresses and zero temperature.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.103.135501 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nanowire-Activated Formation of Coaxial Core-Shell Nanostructure Encapsulated by Carbon Nanotube.
Langmuir
March 2025
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, PR China.
Molecular dynamics simulations have unveiled the atomic-scale mechanisms underlying the formation of core-shell nanostructures involving nanowires (NWs) and graphene. Our study identifies two pivotal steps in this process: the self-scrolling of graphene around NWs and the subsequent edge connection to form carbon nanotubes (CNTs). The tendency of graphene to scroll is governed by the complex interplay of van der Waals forces.
View Article and Find Full Text PDFDesign of a novel tri-axis ZnO nanowires based piezoelectric accelerometer.
PLoS One
March 2025
Department of Mechatronics Engineering, National University of Sciences and Technology, Islamabad, Pakistan.
Micro-Electromechanical Systems (MEMS) are pivotal in modern technology, serving as components like accelerometers, gyroscopes, and pressure sensors in various applications. MEMS accelerometers are key components used for measuring motion and vibrations in a wide range of systems. This paper presents the proposed design of a ZnO nanowires-based piezoelectric accelerometer.
View Article and Find Full Text PDFFlexible multifunctional Janus film towards self-healing, self-adhesive and streachable EMI shielding.
J Colloid Interface Sci
May 2025
Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China. Electronic address:
As smart electronic devices proliferate rapidly, concerns about electromagnetic radiation have become more prominent. Traditional electromagnetic shielding materials typically use three-dimensional porous foams, carbon structures, and film materials as their substrates. However, as electronic devices become more miniaturized, integrated, and precise, the large volume and limited functionality of foam materials have constrained their applications.
View Article and Find Full Text PDFEnhanced Mechanical Properties in Bulk Nanograined Ni with High-Density Fivefold Twins.
Small
March 2025
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.
Fivefold twins are extensively present in nanoparticles and nanowires, enhancing their performance in physical, chemical, and mechanical properties. However, a deep insight into the correlation between mechanical properties and fivefold twins in bulk nanograined materials is lacking due to synthesis difficulties. Here, a bulk fivefold-twinned nanograined Ni is synthesized via electrodeposition.
View Article and Find Full Text PDFSynergistic Adhesion and Shape Deformation in Nanowire-Structured Liquid Crystal Elastomers.
Adv Mater
March 2025
Sustainability Institute, The Ohio State University, Columbus, OH, 43210, USA.
Nature provides many examples of the benefits of nanoscopic surface structures in areas of adhesion and antifouling. Herein, the design, fabrication, and characterization of liquid crystal elastomer (LCE) films are presented with nanowire surface structures that exhibit tunable stimuli-responsive deformations and enhanced adhesion properties. The LCE films are shown to curl toward the side with the nanowires when stimulated by heat or organic solvent vapors.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!