Effect of a High Density of Stacking Faults on the Young’s Modulus of GaAs Nanowires

Chen, Yujie; Burgess, Timothy; An, Xianghai; Mai, Yiu‐Wing; Tan, H. H.; Zou, Jin; Ringer, Simon P.; Jagadish, Chennupati; Liao, Xiaozhou

doi:10.1021/acs.nanolett.5b05095

Cited by 66 publications

(69 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In situ TEM tests provide an ideal tool for studying the actual deformation mechanisms involving the dislocation activities of NWs under tension/compression. In fact, in situ TEM techniques have now become the most widely used method for characterizing a range of NWs, such as Si,101, 102 GaAs103, 104, 105, 106 ZnO,107, 108 VO 2 109. GaN,99, 110, 111 ZnTe,112 Ag,113, 114, 115, 116, 117 Ni118, 119 Cu,120, 121, 122 and metallic glasses 123, 124…”

Section: Mechanical Characterization Of Nwsmentioning

confidence: 99%

The Mechanical Properties of Nanowires

2017

View full text Add to dashboard Cite

Applications of nanowires into future generation nanodevices require a complete understanding of the mechanical properties of the nanowires. A great research effort has been made in the past two decades to understand the deformation physics and mechanical behaviors of nanowires, and to interpret the discrepancies between experimental measurements and theoretical predictions. This review focused on the characterization and understanding of the mechanical properties of nanowires, including elasticity, plasticity, anelasticity and strength. As the results from the previous literature in this area appear inconsistent, a critical evaluation of the characterization techniques and methodologies were presented. In particular, the size effects of nanowires on the mechanical properties and their deformation mechanisms were discussed.

show abstract

Section: Mechanical Characterization Of Nwsmentioning

confidence: 99%

The Mechanical Properties of Nanowires

2017

View full text Add to dashboard Cite

show abstract

“…Recently, the Liao and co‐workers reported that GaAs NWs exhibited a larger Young's modulus when they have stacking faults than for the ZB or WZ phase . The stiffening effect of the stacking faults has been attributed to the changes in the interatomic bonding configuration at the stacking faults.…”

Section: Resultsmentioning

confidence: 99%

“…The occurrence of phase mixing in NWs has not yet been fully understood. Nevertheless, exploring how the mechanical properties of NWs are affected by the stacking faults is of great importance for various promising applications . It has been reported that GaAs NWs exhibit higher Young's moduli when they have stacking faults .…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, exploring how the mechanical properties of NWs are affected by the stacking faults is of great importance for various promising applications . It has been reported that GaAs NWs exhibit higher Young's moduli when they have stacking faults . The piezoelectric properties of CdS NWs were deteriorated by the presence of alternating zinc blende (ZB)–wurtzite (WZ) phases .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bent Polytypic ZnSe and CdSe Nanowires Probed by Photoluminescence

Kim

Park

et al. 2017

Small

View full text Add to dashboard Cite

Nanowires (NWs) have witnessed tremendous development over the past two decades owing to their varying potential applications. Semiconductor NWs often contain stacking faults due to the presence of coexisting phases, which frequently hampers their use. Herein, it is investigated how stacking faults affect the optical properties of bent ZnSe and CdSe NWs, which are synthesized using the vapor transport method. Polytypic zinc blende-wurtzite structures are produced for both these NWs by altering the growth conditions. The NWs are bent by the mechanical buckling of poly(dimethylsilioxane), and micro-photoluminescence (PL) spectra were then collected for individual NWs with various bending strains (0-2%). The PL measurements show peak broadening and red shifts of the near-band-edge emission as the bending strain increases, indicating that the bandgap decreases with increasing the bending strain. Remarkably, the bandgap decrease is more significant for the polytypic NWs than for the single phase NWs. This work provides insights into flexible electronic devices of 1D nanostructures by engineering the polytypic structures.

show abstract

“…[7][8][9][10][11][12][13] It has been found that the fundamental dislocation mechanisms that initiate and sustain plastic flow and fracture in nano-sized materials are considerably different from their bulk counterparts. [14][15][16][17][18][19] For small sized metals with the face-centered-cubic (FCC) structure, it is well established that their plastic deformation is governed by dislocations escaping more quickly than they can multiply, leaving the sample free of dislocations (termed as "dislocation starvation").…”

Section: Introductionmentioning

confidence: 99%

Ultra-large elongation and dislocation behavior of nano-sized tantalum single crystals

Lü

Kong

et al. 2017

AIP Advances

Self Cite

View full text Add to dashboard Cite

Although extensive simulations and experimental investigations have been carried out, the plastic deformation mechanism of body-centered-cubic (BCC) metals is still unclear. With our home-made device, the in situ tensile tests of single crystal tantalum (Ta) nanoplates with a lateral dimension of ∼200 nm in width and ∼100 nm in thickness were conducted inside a transmission electron microscope. We discovered an unusual ambient temperature (below ∼60°C) ultra-large elongation which could be as large as 63% on Ta nanoplates. The in situ observations revealed that the continuous and homogeneous dislocation nucleation and fast dislocation escape lead to the ultra-large elongation in BCC Ta nanoplates. Besides commonly believed screw dislocations, a large amount of mixed dislocation with b=12<111> were also found during the tensile loading, indicating the dislocation process can be significantly influenced by the small sizes of BCC metals. These results provide basic understanding of plastic deformation in BCC metallic nanomaterials.

show abstract

Effect of a High Density of Stacking Faults on the Young’s Modulus of GaAs Nanowires

Cited by 66 publications

References 63 publications

The Mechanical Properties of Nanowires

The Mechanical Properties of Nanowires

Bent Polytypic ZnSe and CdSe Nanowires Probed by Photoluminescence

Ultra-large elongation and dislocation behavior of nano-sized tantalum single crystals

Contact Info

Product

Resources

About