Effect of Electromechanical Coupling on the Young’s Modulus of Zinc Oxide Nanowires

2008 ◽  
Author(s):  
A. V. Desai ◽  
M. A. Haque
Keyword(s):  
Zinc Oxide ◽  
Young’S Modulus ◽  
Electric Fields ◽  
Electromechanical Coupling ◽  
Young's Modulus ◽  
Piezoelectric Materials ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires ◽  
Zinc Oxide Nanowire ◽  
Molecular Bonding

The Young’s modulus of zinc oxide nanowires was measured to be significantly lower than bulk zinc oxide, which cannot be explained within the framework of existing theories. We propose that the strong electromechanical coupling in piezoelectric materials, such as zinc oxide, influences the measured mechanical properties. The asymmetric wurtzite crystal structure and the ionic nature of the molecular bonding result in internal electric fields during straining of the zinc oxide nanowire, which in turn lead to reduction in the measured modulus. In case of flexural deformation, additional electromechanical coupling is present due to the flexoelectric effect.

scholarly journals Synthesis and Elastic Characterization of Zinc Oxide Nanowires

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
M. P. Manoharan ◽  
A. V. Desai ◽  
G. Neely ◽  
M. A. Haque
Keyword(s):  
Zinc Oxide ◽  
Young’S Modulus ◽  
Electromechanical Coupling ◽  
Young's Modulus ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires ◽  
Bulk Scale ◽  
Cantilever Bending

Zinc oxide nanowires, nanobelts, and nanoneedles were synthesized using the vapor-liquid-solid technique. Young's modulus of the nanowires was measured by performing cantilever bending experiments on individual nanowires in situ inside a scanning electron microscope. The nanowires tested had diameters in the range of 200–750 nm. The average Young's modulus, measured to be 40 GPa, is about 30% of that reported at the bulk scale. The experimental results are discussed in light of the pronounced electromechanical coupling due to the piezoelectric nature of the material.

Effect of Strain Induced Charge Redistribution on Young’s Modulus of Zinc Oxide Nanowires

2007 ◽  
Author(s):  
A. V. Desai ◽  
M. A. Haque
Keyword(s):  
Zinc Oxide ◽  
Young’S Modulus ◽  
Effective Charge ◽  
Young's Modulus ◽  
Piezoelectric Materials ◽  
Binary Compound ◽  
Charge Redistribution ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires ◽  
Induced Charge

As the size of material decreases to nanoscale, fundamental material properties such as Young’s modulus are different from bulk values. In this paper, we propose a new mechanism to explain the difference in experimentally observed Young’s modulus values between zinc oxide nanowires and bulk zinc oxide. As a binary compound material (such as zinc oxide) is strained, the effective charge on the ionic constituents of the material changes (in this case zinc and oxygen). The strain induced charge redistribution effect is more significant in nanostructures (such as nanowires) because of their higher fracture strains compared to their bulk counterparts. Since the Young’s modulus of a material is related to the effective charge, we observe differences in modulus values between nanowires and their bulk equivalent. The strain induced charge redistribution phenomenon can also be used to explain variation in modulus values between bulk and nanoscale for other single crystal piezoelectric materials such as silicon carbide.

Facile zinc oxide nanowire growth on graphene via a hydrothermal floating method: towards Debye length radius nanowires for ultraviolet photodetection

2017 ◽  
Vol 5 (38) ◽  
pp. 10087-10093 ◽  
Author(s):  
Brent Cook ◽  
Qingfeng Liu ◽  
Jianwei Liu ◽  
Maogang Gong ◽  
Dan Ewing ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
High Performance ◽  
Debye Length ◽  
Nanowire Growth ◽  
Zinc Oxide Nanowires ◽  
Charge Mobility ◽  
Oxide Nanowires ◽  
High Charge ◽  
Zinc Oxide Nanowire

Heterojunction nanohybrid zinc oxide nanowires on graphene (ZnO-NW/graphene) combines crystalline ZnO-NWs with high charge mobility of graphene to provide a platform for high-performance devices.

Exceptional Deformability of Wurtzite Zinc Oxide Nanowires with Growth Axial Stacking Faults

Nano Letters ◽  
2021 ◽  
Author(s):  
Qiong Liu ◽  
Yihan Nie ◽  
Jing Shang ◽  
Liangzhi Kou ◽  
Haifei Zhan ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Stacking Faults ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires

Controllable growth of vertically aligned zinc oxide nanowires using vapour deposition

2006 ◽  
Vol 17 (19) ◽  
pp. 4811-4818 ◽  
Author(s):  
S H Dalal ◽  
D L Baptista ◽  
K B K Teo ◽  
R G Lacerda ◽  
D A Jefferson ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Vapour Deposition ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires ◽  
Controllable Growth ◽  
Vertically Aligned

Strain-Gated Piezotronic Transistors Based on Vertical Zinc Oxide Nanowires

ACS Nano ◽  
2012 ◽  
Vol 6 (5) ◽  
pp. 3760-3766 ◽  
Author(s):  
Weihua Han ◽  
Yusheng Zhou ◽  
Yan Zhang ◽  
Cheng-Ying Chen ◽  
Long Lin ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires

scholarly journals Synthesis of Aluminum-doped Zinc Oxide Nanowires Hydrothermally Grown on Plastic Substrate

2012 ◽  
Vol 02 (04) ◽  
pp. 56-59 ◽  
Author(s):  
Concepción Mejía García ◽  
Elvia Díaz Valdés ◽  
Ana Ma. Paniagua Mercado ◽  
Arturo F. Méndez Sánchez ◽  
José A. Andraca Adame ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Plastic Substrate ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires ◽  
Aluminum Doped Zinc Oxide

Enhanced fabrication process of zinc oxide nanowires for optoelectronics

2014 ◽  
Vol 555 ◽  
pp. 42-47 ◽  
Author(s):  
C. García Núñez ◽  
J.L. Pau ◽  
E. Ruíz ◽  
A. García Marín ◽  
B.J. García ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Fabrication Process ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires
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