Current–Voltage Characteristics of ZnO Nanowires Under Uniaxial Loading

Araneo, Rodolfo; Bini, Fabiano; Pea, Marialilia; Notargiacomo, A.; Rinaldi, Antonio; Lovat, Giampiero; Celozzi, Salvatore

doi:10.1109/tnano.2014.2318137

Cited by 34 publications

(18 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A remarkable example is represented by scale effects on materials properties in nanotechnology, where the mechanical (elastic and inelastic) properties of nanomaterials, such as nanowires and nanoparticles, change dramatically from bulk properties used in conventional structural engineering, and typically scale with component size according to power laws. Starting with the fundamental framework reported in literature (e.g., [131][132][133]), Professor Luongo championed a project awarded by the Italian Ministry of Education, Universities and Research (MIUR) to investigate the strengthening and stiffening mechanical size effects in zinc-oxide nanowires (which become stronger and stiffer than bulk) and their functional implications on piezoelectric performance and buckling resistance of innovative nanopiezogenerators for energy harvesting [134,135]. To achieve these goals, this ongoing project at M&MoCS pursues a multi-disciplinary approach encompassing advanced nanoscale experiments with complex continuum multi-physics modeling to yield new design principles for the engineering of piezoelectric MicroElectroMechanical and NanoElectroMechanical Systems at large.…”

Section: Control and Stability In Innovative Systemsmentioning

confidence: 99%

On the contribution of Angelo Luongo to Mechanics: in honor of his 60th birthday

Piccardo

D’Annibale

Zulli

2014

Continuum Mech. Thermodyn.

View full text Add to dashboard Cite

This paper intends to summarize the scientific production of Angelo Luongo on the occasion of his Sixtieth Birthday, focusing on his main contributions in the field of Mechanics. The task will not be easy because of the breadth of his scientific production, only apparently attributable to a restricted number of keywords. In fact, even when the work seems purely algorithmic, speculation on the physical and mechanical aspects of the problem is always present, providing new interpretations and innovative openings to a careful reader. Similarly, also the works, which apparently seem to be high-level applications, always reserve methodological aspects that are not negligible. The editorial choice to divide his papers through a small number of keywords is certainly simplistic, but offers the possibility to better highlight all the connections among his variegated production. The most original contributions of Angelo Luongo in the context of perturbation methods, linear and nonlinear dynamics and control, elastic buckling and structural analysis, bifurcation and stability of non-conservative systems, are discussed in detail. Finally, the Angelo Luongo's central role in the creation and development of activities of the international research center M&MoCS is pointed out.

show abstract

Section: Control and Stability In Innovative Systemsmentioning

confidence: 99%

On the contribution of Angelo Luongo to Mechanics: in honor of his 60th birthday

Piccardo

D’Annibale

Zulli

2014

Continuum Mech. Thermodyn.

View full text Add to dashboard Cite

show abstract

“…In bulk form, ZnO has a crystalline wurtzite hexagonal structure with a modulus E ∼ 140 GPa in the [0001] direction and marked brittle fracture behavior with strains smaller than 1%. In comparison, in spite of some uncertainties and disagreement among published reports, nano-sized samples, primarily NWs and nanobelts (NBs), exhibit substantial differences [ 1 – 23 ], partly because they can be fabricated defect-free (or with a very small amount of defects), as verified via transmission electron microscopy (TEM), scanning electron macroscopy (SEM) and selected-area electron diffraction (SAD) [ 24 – 27 ], and partly because the size effects have been observed and confirmed by several independent studies, both in elastic and fracture/plastic strength properties.…”

Section: Mechanical Characterization and Reliability Of Zno Nwsmentioning

confidence: 99%

“…In Section 3, we report on the solutions that allow for reliable C-AFM electrical characterization of ZnO micro-pillars fabricated using the focused ion beam (FIB) technique. Finally, in Section 4, we present an accurate numerical modeling of NWs, based on the classical approach and the finite element method (FEM), which we have applied successfully to several configurations before [ 15 – 23 ]. Our results can provide guidelines for designing high performance piezo-nano-devices for sensors in multiple areas, e.g., electrical, mechanical and chemical processes, paving the way for new strategies for design.…”

Section: Introductionmentioning

confidence: 99%

Design Concepts, Fabrication and Advanced Characterization Methods of Innovative Piezoelectric Sensors Based on ZnO Nanowires

Araneo

Rinaldi

Notargiacomo

et al. 2014

Sensors

Self Cite

View full text Add to dashboard Cite

Micro- and nano-scale materials and systems based on zinc oxide are expected to explode in their applications in the electronics and photonics, including nano-arrays of addressable optoelectronic devices and sensors, due to their outstanding properties, including semiconductivity and the presence of a direct bandgap, piezoelectricity, pyroelectricity and biocompatibility. Most applications are based on the cooperative and average response of a large number of ZnO micro/nanostructures. However, in order to assess the quality of the materials and their performance, it is fundamental to characterize and then accurately model the specific electrical and piezoelectric properties of single ZnO structures. In this paper, we report on focused ion beam machined high aspect ratio nanowires and their mechanical and electrical (by means of conductive atomic force microscopy) characterization. Then, we investigate the suitability of new power-law design concepts to accurately model the relevant electrical and mechanical size-effects, whose existence has been emphasized in recent reviews.

show abstract

“…The metal-oxide granular structure and chemical properties confer to MOVs their well-known nonlinear V-I characteristic [23][24][25]. The varistor behavior allows the device to limit the level of the voltage, avoiding undesirable values, and to dissipate part of the energy associated with the travelling surge by draining current to the ground.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Metal Oxide Varistor Arresters for Protection of Multiconductor Transmission Lines Using Unconditionally-Stable Crank–Nicolson FDTD

et al. 2020

Self Cite

View full text Add to dashboard Cite

Surge arresters may represent an efficient choice for limiting lightning surge effects, significantly reducing the outage rate of power lines. The present work firstly presents an efficient numerical approach suitable for insulation coordination studies based on an implicit Crank–Nicolson finite difference time domain method; then, the IEEE recommended surge arrester model is reviewed and implemented by means of a local implicit scheme, based on a set of non-linear equations, that are recast in a suitable form for efficient solution. The model is proven to ensure robustness and second-order accuracy. The implementation of the arrester model in the implicit Crank–Nicolson scheme represents the added value brought by the present study. Indeed, its preserved stability for larger time steps allows reducing running time by more than 60 % compared to the well-known finite difference time domain method based on the explicit leap-frog scheme. The reduced computation time allows faster repeated solutions, which need to be looked for on assessing the lightning performance (randomly changing, parameters such as peak current, rise time, tail time, location of the vertical leader channel, phase conductor voltages, footing resistance, insulator strength, etc. would need to be changed thousands of times).

show abstract

Current–Voltage Characteristics of ZnO Nanowires Under Uniaxial Loading

Cited by 34 publications

References 74 publications

On the contribution of Angelo Luongo to Mechanics: in honor of his 60th birthday

On the contribution of Angelo Luongo to Mechanics: in honor of his 60th birthday

Design Concepts, Fabrication and Advanced Characterization Methods of Innovative Piezoelectric Sensors Based on ZnO Nanowires

Analysis of Metal Oxide Varistor Arresters for Protection of Multiconductor Transmission Lines Using Unconditionally-Stable Crank–Nicolson FDTD

Contact Info

Product

Resources

About