Nanoscale mechanical behavior of vanadium doped ZnO piezoelectric nanofiber by nanoindentation technique

Chen, Y. Q.; Mao, Scott X.; Li, W.

doi:10.1063/1.3402937

Cited by 13 publications

(7 citation statements)

References 31 publications

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“…Recently, ZnO nanofibers have raised attention, due to their great potential for high-technology applications. [186][187][188][189] Chen et al [189] which was about one order of magnitude larger than that of pure ZnO bulk and thin films. [200] MEMS is a technology exploiting miniaturized mechanical and electro-mechanical elements obtained via microfabrication, which is becoming central in point-of-care medicine.…”

Section: Bio-applications Of Electrospun Ceramic-based Piezo-fibersmentioning

confidence: 99%

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Azimi

Milazzo

Lazzeri

et al. 2019

Adv Healthcare Materials

121

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The field of nanotechnology has been gaining great success due to its potential in developing new generations of nanoscale materials with unprecedented properties and enhanced biological responses. This is particularly exciting using nanofibers, as their mechanical and topographic characteristics can approach those found in naturally occurring biological materials. Electrospinning is a key technique to manufacture ultrafine fibers and fiber meshes with multifunctional features, such as piezoelectricity, to be available on a smaller length scale, thus comparable to subcellular scale, which makes their use increasingly appealing for biomedical applications. These include biocompatible fiber-based devices as smart scaffolds, biosensors, energy harvesters and nanogenerators for the human body. This paper provides a comprehensive review of current studies focused on the fabrication of ultrafine polymeric and ceramic piezoelectric fibers specifically designed for, or with the potential to be translated toward, biomedical applications. It provides an applicative and technical overview of the biocompatible piezoelectric fibers, with actual and potential applications, an understanding of the electrospinning process, and the properties of nanostructured fibrous materials, including the available modeling approaches. Ultimately, this This article is protected by copyright. All rights reserved. 3 review aims at enabling a future vision on the impact of these nanomaterials as stimuli-responsive devices in the human body.

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Section: Bio-applications Of Electrospun Ceramic-based Piezo-fibersmentioning

confidence: 99%

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Azimi

Milazzo

Lazzeri

et al. 2019

Adv Healthcare Materials

121

View full text Add to dashboard Cite

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“…It has become the second most widely studied material after Si for the past decade, because of its advantages as low material cost, low resistivity, high transparency in the visible range, relatively low deposition temperature and stability in hydrogen plasma (Özgür et al 2005). It is presently used in many diverse products, such as piezoelectric transducers, varistors, transparent conducting layers for the photovoltaic industry, optoelectronic application (Soki et al 2000;Look et al 2004), as well as application in heterostructures for fabrication of photodiodes (Jeong et al 2003), diluted magnetic semiconductors (Ando et al 2001) and nanopiezotronics (Chen et al 2010). ZnO is naturally n-type semiconductor because of a deviation from stoichiometry, due to the presence of intrinsic defects such as oxygen vacancies and Zn interstitials (Özgür et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Heavy lithium-doped ZnO thin films prepared by spray pyrolysis method

Ardyanian

Sedigh

2014

Bull Mater Sci

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Lithium-doped ZnO thin films (ZnO : Li x ) were prepared by spray pyrolysis method on the glass substrates for x (x = [Li]/[Zn]) value varied between 5 and 70%. Structural, electrical and optical properties of the samples were studied by X-ray diffraction (XRD), UV-Vis-NIR spectroscopy, scanning electron microscopy (SEM), Hall effect and sheet resistance measurements. XRD results show that for x ≤ 50%, the structure of the films tends to be polycrystals of wurtzite structure with preferred direction along (0 0 2). The best crystalline order is found at x = 20% and the crystal structure is stable until x = 60%. The Hall effect results describe that Li doping leads to change in the conduction type from n-to p-type, again it changes to n-type at x = 70% and is attributed to self-compensation effect. Moreover, the carrier density was calculated in the order of 10 13 cm -3 . The resistivity of Li-doped films decreases until 22 Ω cm at x = 50%. Optical bandgap was reduced slightly, from 3⋅27 to 3⋅24 eV as a function of the grain size. Optical transmittance in the visible range reaches T = 97%, by increasing of Li content until x = 20%. Electrical and optical properties are coherent with structural results.

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“…Quasi-one-dimensional nanostructures are particularly interesting since they possess unique properties associated with their highly anisotropic geometry together with finite size effects. However, conflicting results have been reported in previous experimental measurements [4][5][6][7][8][9][10][11][12][13][14][15][16] and theoretical calculations [17][18][19][20][21][22][23][24][25]. Some works reported decreased elastic moduli, while the others showed increased elastic moduli.…”

Section: Introductionmentioning

confidence: 66%

Mechanical properties of Mn-doped ZnO nanowires studied by first-principles calculations

Zuo-ning

Wang

et al. 2012

Int J Miner Metall Mater

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First-principles calculations were performed to investigate the mechanical properties of ZnO nanowires and to study the doping and size effects. A series of strains were applied to ZnO nanowires in the axial direction and the elastic moduli of ZnO nanowires were obtained from the energy versus strain curves. Pure and Mn-doped ZnO nanowires with three different diameters (1.14, 1.43, and 1.74 nm) were studied. It is found that the elastic moduli of the ZnO nanowires are 146.5, 146.6, and 143.9 GPa, respectively, which are slightly larger than that of the bulk (140.1 GPa), and they increase as the diameter decreases. The elastic moduli of the Mn-doped ZnO nanowires are 137.6, 141.8, and 141.0 GPa, which are slightly lower than those of the undoped ones by 6.1%, 3.3%, and 2.0%, respectively. The mechanisms of doping and size effect were discussed in terms of chemical bonding and geometry considerations.

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Nanoscale mechanical behavior of vanadium doped ZnO piezoelectric nanofiber by nanoindentation technique

Cited by 13 publications

References 31 publications

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Heavy lithium-doped ZnO thin films prepared by spray pyrolysis method

Mechanical properties of Mn-doped ZnO nanowires studied by first-principles calculations

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