scholarly journals Characterizing and Optimizing Piezoelectric Response of ZnO Nanowire/PMMA Composite-Based Sensor

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1712
Author(s):  
Xiaoting Zhang ◽  
Jose Villafuerte ◽  
Vincent Consonni ◽  
Jean-Fabien Capsal ◽  
Pierre-Jean Cottinet ◽  
...  
Keyword(s):  
Electric Circuit ◽  
Piezoelectric Sensor ◽  
Piezoelectric Response ◽  
Piezoelectric Composite ◽  
Individual Layer ◽  
Oxide Nanowires ◽  
Coronary Pressure ◽  
Model Combining ◽  
Semiconducting Properties ◽  
Vertically Aligned

Due to the outstanding coupling between piezoelectric and semiconducting properties of zinc oxide nanowires, ZnO NW-based structures have been demonstrating promising potential with respect to their applicability in piezoelectric, piezotronic and piezo-phototronic devices. Particularly considering their biocompatibility and biosafety for applications regarding implantable medical detection, this paper proposed a new concept of piezoelectric composite, i.e., one consisting of vertically aligned ZnO NW arrays and an insulating polymer matrix. First, the finite element method (FEM) was employed to drive optimization strategies through adjustment of the key parameters such as Young’s modules and the dielectric constant of the dielectric constituents, together with the density and dimension of nanowire (NW) itself. Second, to investigate the functionality of each individual layer of composite, different designed structures were fabricated and characterized in terms of electrical and piezoelectric properties. Next, experimental and simulation tests were performed, indicating that the decreasing thickness of the top poly(methyl methacrylate) layer (PMMA) can substantially enhance the piezoelectric sensitivity of the ZnO NW composite. Besides the further benefit of no polarization being needed, our material has a comparable charge coefficient (d33) with respect to other lead-free alternatives (e.g., BaTiO3), confirming the high sensing abilities of the developed structure based on vertically aligned ZnO NW arrays. Finally, a time-varying model combining piezoelectricity and electric circuit modules was investigated in detail, giving rise to an estimation of the d33 coefficient for ZnO NWs. Based on this study, the developed material is revealed to be highly promising in medical applications, particularly regarding the FFR technique, where coronary pressure can be measured through a piezoelectric sensor.

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

Optoelectronic characterization of morphology-controlled zinc oxide nanowires

2011 ◽  
Vol 1315 ◽  
Author(s):  
Shou-Yi Kuo ◽  
Fang-I Lai ◽  
Chun-Chieh Wang ◽  
Woei-Tyng Lin
Keyword(s):  
Field Emission ◽  
Visible Region ◽  
Chemical Vapor ◽  
Growth Time ◽  
Emission Measurement ◽  
Oxide Nanowires ◽  
Average Reflectance ◽  
Vertically Aligned ◽  
Metal Catalyzed

ABSTRACTIn this paper, we report the characterization of vertically aligned ZnO nanowire (NW) arrays synthesized by metal-catalyzed chemical vapor deposition. The growth mechanism of ZnO NWs may be related to vapor-solid-nucleation. Morphological, structural, optical and field emission characteristics can be modified by varying the growth time. For growth time reaches 120 min, the length and the diameter of ZnO NWs are 1.5 μm and 350 nm, and they also show preferential growth orientation along the c-axis. Moreover, strong alignment and uniform distribution of ZnO NWs can effectively enhance the antireflection to reach the average reflectance of 5.7% in the visible region as well. Field emission measurement indicated that the growth time play an important role in density- and morphology-controlled ZnO NWs, and thus ZnO NWs are expected to be used in versatile optoelectronic devices.

Flexible Capacitive Piezoelectric Sensor with Vertically Aligned Ultralong GaN Wires

2018 ◽  
Vol 10 (5) ◽  
pp. 4794-4800 ◽  
Author(s):  
Amine El Kacimi ◽  
Emmanuelle Pauliac-Vaujour ◽  
Joël Eymery
Keyword(s):  
Piezoelectric Sensor ◽  
Vertically Aligned

scholarly journals SbSI Composites Based on Epoxy Resin and Cellulose for Energy Harvesting and Sensors—The Influence of SBSI Nanowires Conglomeration on Piezoelectric Properties

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 902 ◽  
Author(s):  
Bartłomiej Toroń ◽  
Piotr Szperlich ◽  
Mateusz Kozioł
Keyword(s):  
Energy Harvesting ◽  
Epoxy Resin ◽  
Piezoelectric Properties ◽  
Piezoelectric Sensor ◽  
Device Fabrication ◽  
Fiber Reinforced Polymer ◽  
Piezoelectric Response ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Antimony Sulfoiodide

In this paper, ferroelectric antimony sulfoiodide (SbSI) nanowires have been used to produce composites for device fabrication, which can be used for energy harvesting and sensors. SbSI is a very useful material for nanogenerators and nanosensors in which the high values of the piezoelectric coefficient (d33 = 650 pC/N) and the electromechanical coefficient (k33 = 0.9) are essential. Alternatively, cellulose and epoxy resin were matrix materials in these composites, whereas SbSI nanowires fill the matrix. Piezoelectric response induced by vibrations has been presented. Then, a composite with an epoxy resin has been used as an element to construct a fiber-reinforced polymer piezoelectric sensor. For the first time, comparison of piezoelectric properties of cellulose/SbSI and epoxy resin/SbSI nanocomposite has been presented. The influence of concentration of SbSI nanowires for properties of epoxy resin/SbSI nanocomposite and in a fiber-reinforced polymer based on them has also been shown. Results of aligning the SbSI nanowires in the epoxy matrix during a curing process have been presented as well.

Vertically aligned cobalt oxide nanowires on graphene networks for high-performance lithium storage

2014 ◽  
Vol 25 (44) ◽  
pp. 445704 ◽  
Author(s):  
Liujun Cao ◽  
Lulu Ma ◽  
Peng Xiao ◽  
Yunhuai Zhang ◽  
Shengtao Zhang ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
High Performance ◽  
Lithium Storage ◽  
Oxide Nanowires ◽  
Vertically Aligned

scholarly journals Твердотельный изгибно-вибрационный датчик низкочастотного магнитного поля на основе пьезоэлектрического эффекта

2019 ◽  
Vol 89 (2) ◽  
pp. 206
Author(s):  
А.Е. Панич ◽  
Г.С. Радченко ◽  
А.В. Скрылев ◽  
А.А. Панич ◽  
А.Ю. Малыхин
Keyword(s):  
Magnetic Field ◽  
Theoretical Calculations ◽  
Low Frequency ◽  
Piezoelectric Sensor ◽  
Piezoelectric Response ◽  
Small Signal ◽  
Hybrid Magnet ◽  
Effective Response ◽  
Magnetic Action ◽  
Electrophysical Parameters

AbstractOptimal geometrical and electrophysical parameters are calculated theoretically; the effective response of a solid-state hybrid “magnet–carbon—piezoelectric” sensor is studied experimentally. Experiments are performed under the action of an external magnetic field of low-frequency flexural resonances (from 1 to 230 Hz). Theoretical calculations have formed the basis for designing an experimental prototype of the instrument. The frequency dependence of the direct piezoelectric response to the applied small-signal varying magnetic action is constructed.

Ultra-Long Barium Titanate Nanowire Arrays for Low Frequency Energy Harvesting Applications

2014 ◽  
Author(s):  
Aneesh Koka ◽  
Henry A. Sodano
Keyword(s):  
Barium Titanate ◽  
Energy Harvesting ◽  
Resonant Frequency ◽  
Vibrational Energy ◽  
Low Frequency ◽  
Piezoelectric Response ◽  
Synthesis Process ◽  
Mechanical Vibrations ◽  
Energy Harvesters ◽  
Vertically Aligned

Piezoelectric nanowires (NWs) have recently attracted immense interest due to their excellent electro-mechanical coupling behavior that can efficiently enable conversion of low-intensity mechanical vibrations for powering or augmenting batteries of biomedical devices and portable consumer electronics. Specifically, nano-electromechanical systems (NEMS) composed of piezoelectric NWs offer an exciting potential for energy harvesting applications due to their enhanced flexibility, light weight, and compact size. Compared to the bulk form, high aspect ratio NWs can exhibit higher deformation to produce an enhanced piezoelectric response at a lower stress level. NEMS made of conventional semiconducting vertically aligned, ZnO NW arrays have been investigated thoroughly for energy harvesting; however, ZnO has a lower piezoelectric coupling coefficient as compared to many ferroelectric ceramics which limits its piezoelectric performance. Amidst lead-free ferroelectric materials, environmentally-friendly barium titanate (BaTiO3) possesses one of the highest piezoelectric strain coefficients and thus can enable greater energy transfer when used in vibrational energy harvesters. In this paper, a novel NEMS energy harvester is fabricated using ultra-long (∼40 μm long), vertically aligned BaTiO3 NW arrays which has a low resonant frequency (below 200 Hz) and its AC power harvesting capacity from low amplitude base vibrations (0.25 g) is demonstrated. The design and fabrication of low resonant frequency vibrational energy harvesters has been challenging in the field of MEMS/NEMS since the high stiffness of the structures results in resonant frequency often greater than 1 kHz. However, ambient mechanical vibrations usually exist in the 1 Hz to 1 kHz range and thus highly complaint ultra-long, NW arrays are beneficial to enable efficient energy conversion. Through the use of this newly developed synthesis process for the growth of highly compliant, ultra-long BaTiO3 NW arrays, it is shown that piezoelectric NWs based NEMS energy harvesters capable of harnessing this low frequency ambient vibrational energy can be conceived.

scholarly journals Controlled hydrothermal growth of vertically-aligned zinc oxide nanowires using silicon and polyimide substrates

2015 ◽  
Vol 145 ◽  
pp. 86-90 ◽  
Author(s):  
Atif Syed ◽  
Michail Kalloudis ◽  
Vasileios Koutsos ◽  
Enrico Mastropaolo
Keyword(s):  
Zinc Oxide ◽  
Hydrothermal Growth ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires ◽  
Vertically Aligned
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