Molecular dynamics simulation on the buckling behavior of GaN nanowires under uniaxial compression

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Physica. E, Low-dimensional systems & nanostructures, 40(3):561-566

DOI:https://doi.org/10.1016/j.physe.2007.08.040· OSTI ID:925715

Wang, Zhiguo; Zu, Xiaotao; Yang, Li; Gao, Fei; Weber, William J

Molecular dynamics simulation is one of the most promising methods for investigating the mechanical behavior of nanostructures, such as nanowires and nanotubes. Atomistic simulations are performed to investigate the buckling properties of [001], [11¯0] and [110] oriented GaN nanowires under uniaxial compression, these three types of nanowires correspond to experimentally synthesized nanowires. The effects of simulation temperature, and wire length on the buckling behavior are investigated. The simulation results show that critical stress decreases with the increase of wire length, which is in agreement with the Euler theory. Buckling occurs as a result of dynamic processes, buckling strain (and corresponding stress) decreases as temperature is increased.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 925715
• Report Number(s): PNNL-SA-56748; KC0201020
• Journal Information: Physica. E, Low-dimensional systems & nanostructures, 40(3):561-566, Journal Name: Physica. E, Low-dimensional systems & nanostructures, 40(3):561-566 Journal Issue: 3 Vol. 40
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
COMPRESSION
Computer simulation
DIMENSIONS
GALLIUM NITRIDES
GaN
MOLECULAR DYNAMICS METHOD
Nanowires
QUANTUM WIRES
STRAINS
TEMPERATURE DEPENDENCE
buckling behavior