An investigation on the behavior of electrospun ZnO nanofibers under the application of low frequency AC electric fields

Ghashghaie, Sasan; Bazargan, Ali Mohammad; Ganji, M. Esmaeilpour; Marzbanrad, Ehsan; Zamani, Cyrus; Raissi, Babak; Keyanpour-Rad, Mansoor; Bahrevar, M.A.

doi:10.1007/s10854-011-0304-2

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…Extra amounts of polymer not only result in thicker fibers but also causes the destruction of ceramic fibers and elimination of polymer during calcination. Heat treatment called calcination is preformed based on the nature of ceramic, for example, ZnO NFs are synthesized by calcination at 500 °C for 2 h [21]. Calcination conditions and their effects based on the real experience are discussed in a separate Section 3.3.…”

Section: Types Of Electrospun Ceramic Fibersmentioning

confidence: 99%

“…In other research, Ghashghaie et al found that the electrospun ZnO NFs are capable to assemble into the inter-electrode space via dielectrophoresis force in above of 1 kHz (5 and 20 kHz) frequencies. Therefore, it is observed that ZnO NFs are aligned along the electric field lines thereby indicating desirable conditions for electronic device applications [21]. …”

Section: Applications Of Ceramic Electrospun Matsmentioning

confidence: 99%

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Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

2017

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Ceramic nanofibers (NFs) have recently been developed for advanced applications due to their unique properties. In this article, we review developments in electrospun ceramic NFs with regard to their fabrication process, properties, and applications. We find that surface activity of electrospun ceramic NFs is improved by post pyrolysis, hydrothermal, and carbothermal processes. Also, when combined with another surface modification methods, electrospun ceramic NFs result in the advancement of properties and widening of the application domains. With the decrease in diameter and length of a fiber, many properties of fibrous materials are modified; characteristics of such ceramic NFs are different from their wide and long (bulk) counterparts. In this article, electrospun ceramic NFs are reviewed with an emphasis on their applications as catalysts, membranes, sensors, biomaterials, fuel cells, batteries, supercapacitors, energy harvesting systems, electric and magnetic parts, conductive wires, and wearable electronic textiles. Furthermore, properties of ceramic nanofibers, which enable the above applications, and techniques to characterize them are briefly outlined.

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Section: Types Of Electrospun Ceramic Fibersmentioning

confidence: 99%

Section: Applications Of Ceramic Electrospun Matsmentioning

confidence: 99%

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

2017

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“…vapour liquid solid (VLS), co-precipitation, hydrothermal synthesis, sol-gel, metalorganic chemical vapour deposition (CVD) and electrospinning. [10][11][12][13] Among all these methods, electrospinning is simple, low cost and effective method to prepare organic and inorganic nanofibers of variable lengths having uniform diameter and various composition. 14 ZnO is one of the attractive n-type semiconducting materials having wide bandgap ∼3.37eV at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of different electrodes on the transport properties of ZnO nanofibers under humid environment

et al. 2015

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Relative humidity (RH) sensing properties of zinc oxide nanofibers (ZNF), synthesized using electrospinning technique, were studied by impedance spectroscopy. RH sensors were fabricated with two different electrodes (Au and Ni) using lithography on top of the nanofibers deposited on Si/SiO2 substrate. Compare with the Ni electrode sensor, Au electrode sensor exhibits larger sensitivity and quicker response/recovery. Capacitance, electrical conductivity and electrical modulus were studied at 40%-90% RH as a function of the frequency of the applied AC signal in the frequency range of 10−2-106 Hz. The corresponding response and recovery times are 3s and 5s for Au, and 6s and 10s for Ni electrode sensor, respectively. The sensors exhibited a reversible response with small hysteresis of less than 4% and 12% for Au and Ni electrodes respectively. Stability of the sensor device with Au electrode was confirmed by testing the device for 13 days. The excellent sensing characteristics and comparison of sensors with different electrode materials may offer an effective route for designing and optimizing RH sensors.

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“…Alternating electrical field changes the charge transfer characteristics in the charged liquid jet and provides a good way to reduce the interferences from charge repulsion [15,16]. AC electrical field also induces the charge transfer along the surface of insulate substrate and prevents polarization inside the insulating substrate [17].…”

Section: Introductionmentioning

confidence: 99%

Electrohydrodynamic Direct‐Write Orderly Micro/Nanofibrous Structure on Flexible Insulating Substrate

Zheng

Liu

Wang

et al. 2014

Journal of Nanomaterials

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AC pulse-modulated electrohydrodynamic direct-writing (EDW) was utilized to direct-write orderly micro/nanofibrous structure on the flexible insulating polyethylene terephthalate (PET) substrate. During the EDW process, AC electrical field induced charges to reciprocate along the jet and decreased the charge repulsive force that applied on charged jet. Thanks to the smaller charge repulsive force, stable straight jet can be built up to direct-write orderly micro/nanofibrous structures on the insulating substrate. The minimum motion velocity required to direct-write straight line fibrous structure on insulating PET substrate was 700 mm/s. Moreover, the influences of AC voltage amplitude, frequency, and duty cycle ratio on the line width of fibrous structures were investigated. This work proposes a novel solution to overcome the inherent charge repulsion emerging on the insulating substrate, and promotes the application of EDW technology on the flexible electronics.

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An investigation on the behavior of electrospun ZnO nanofibers under the application of low frequency AC electric fields

Cited by 12 publications

References 23 publications

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

Effect of different electrodes on the transport properties of ZnO nanofibers under humid environment

Electrohydrodynamic Direct‐Write Orderly Micro/Nanofibrous Structure on Flexible Insulating Substrate

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