In‐Plane Self‐Turning and Twin Dynamics Renders Large Stretchability to Mono‐Like Zigzag Silicon Nanowire Springs

Xue, Zhaoguo; Xu, Min; Li, Xing; Wang, Jimmy; Jiang, Xiaofan; Wei, Xianlong; Yu, Linwei; Chen, Qing; Wang, Junzhuan; Xu, Jun; Shi, Yi; Chen, Kunji; Cabarrocas, Pere Roca i

doi:10.1002/adfm.201600780

Cited by 34 publications

(38 citation statements)

References 36 publications

(58 reference statements)

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“…The in-plane NWs could be used as building blocks for nanooptical and nanoelectronical devices, 31 as well as for stretchable electronics. 32 The planar growth mode could be easily transformed into vertical one by a proper choice of laser plasma energies.…”

Section: Results and Discussionmentioning

confidence: 99%

Copper-Stabilized Si/Au Nanowhiskers for Advanced Nanoelectronic Applications

et al. 2018

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We report here the growth and functional properties of silicon-based nanowhisker (NW) diodes produced by the vapor–liquid–solid process using a pulsed laser deposition technique. For the first time, we demonstrate that this method could be employed to control the size and shape of silicon NWs by using a two-component catalyst material (Au/Cu ≈ 60:1). During the NW growth, copper is distributed on the outer surface of the NW, whereas gold sticks as a droplet to its top. The length of NWs is defined by the total amount of copper in the catalyst alloy droplet. The measurements of the electrical transport properties revealed that in contact with the substrate, individual NWs demonstrate typical I – V diode characteristics. Our approach can become an important new tool in the design of novel electronic components.

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Section: Results and Discussionmentioning

confidence: 99%

Copper-Stabilized Si/Au Nanowhiskers for Advanced Nanoelectronic Applications

et al. 2018

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“…Note that the time-varying bends (up and down) of the end of the nanowire with [112]-orientation ( Fig. 6A) during its contraction can be due to the same physical factors that lead to periodic deviations in the direction of growth of the synthesized nanowire away from the general Si [112]-direction 70 .…”

Section: Discussionmentioning

confidence: 99%

Restructuring and breakup of nanowires with the diamond cubic crystal structure into nanoparticles

Gorshkov

Tereshchuk

Sareh

2020

Materials Today Communications

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A kinetic Monte Carlo approach is applied to study physical mechanisms responsible for the breakup of nanowires with the diamond cubic crystal structure into a chain of nanoparticles discovered in preceding experiments on Silicon nanowires. We show that this process is based on the well-known mechanism of roughening transition, which specifically manifests itself in quasi-one-dimensional systems/nanowires with a pronounced anisotropy of the surface energy density. Depending on the temperature and orientation of the nanowire relative to its internal crystal structure, the wavelengths of substantial cross-sectional modulations exceed its initial radius by 4 to 18 times. For certain orientations, a straight nanowire at the initial stage of evolution forms a serpentine/helical structure. The scenarios of the stage of nanowire ruptures into single nanoclusters are also diverse: either each spindle-shaped region of the nanowire transforms into a separate drop (by long-wave surface perturbations), or the adjacent short-scale beads absorb each other due to the Ostwald ripening effect, which can be accompanied by the formation of long-lived many-body dumbbells. The discovered features of the dynamics of quasi-onedimensional systems expand our conceptions of the physical mechanisms involved in the breakup of nanowires (presented by Nichols and Mullins as a classical model for such instabilities) which could be useful in applications based on chains of ordered nanoparticles. Manuscript & Supplementary FileWe have also found out the possibility of the formation of helicoidal fragments, extended snakelike configurations, and many-body long-lived structures (see 'Movie S1' and 'Movie S2' in the Supplementary Information). In conclusion, we note that the disintegration processes of nanowires with the diamond cubic crystal structure are strikingly different from the break-up processes of nanowires with the FCC (face centered cubic) lattice structure 30-33 , even though the Wulff configurations 48,49 for these types of crystal lattices are visually very similar.

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“…For SiC NWs, they usually contain well-developed cubic (3C) structured segments, stacking faults, and also H-type structured segments and even helical structure 17 , dramatically affecting their mechanical properties, that may be the reason why the Young's modulus of SiC NWs vary widely 18 . Recently, reserachers demonstrated that the stretchability of traditional brittle materials can be enhanced by buckling and channel guiding strategy [19][20][21][22] . Besides the structure mentioned above, one-dimentional disordered (ODD) structure with high density defects is another ubiquitous structure not only in SiC but also in other materials 8,23,24 , the symmetry and periodicity of the original face-centered cubic structure of SiC in the ODD structure change thoroughly 8 , which is considered to have not only great effect on mechanical properties but also on catalytic performance 24 .…”

Section: Xuejiao Zhang 13 Jing Wang 13 Zhenyu Yang 23 Xuke Tmentioning

confidence: 99%