Model for zinc oxide varistor

Santos, José; Longo, Elson; Leite, E. R.; Varela, José Arana

doi:10.1557/jmr.1998.0164

Cited by 20 publications

(10 citation statements)

References 23 publications

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“…In addition to the research studies for various gases, 1D nano‐PANI was also studied for biosensors, either as labels or as transducers 354–361. PANI nanofibers or nanotubes are prominent candidates for supports in enzyme immobilization and biosensors because of, on the one hand, several advantages including the excellent matrix for immobilization of biomolecules and rapid electron transfer for signals,362–365 and two redox couples in the right potential range that facilitate the enzyme–polymer charge transfer366 demonstrated by PANI; on the other hand, the large surface area and nanopores of PANI nanofibers or nanotubes into which enzymes and other target species can be immobilized 367–369. A glucose biosensor was fabricated by the immobilization of glucose oxidase and dendrimer‐encapsulated Pt nanoparticles onto PANI nanofibers through the electrostatic layer‐by‐layer adsorption method 366.…”

Section: New Applications Of 1d Nano‐panimentioning

confidence: 99%

One‐Dimensional Nanostructured Polyaniline: Syntheses, Morphology Controlling, Formation Mechanisms, New Features, and Applications

Wang¹,

Zhang²

2012

Adv Polym Technol

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One‐dimensional nanostructured polyaniline (1D nano‐PANI), including nanofibers, nanowires, nanobelts, nanotubes, nanorods, nanoneedles, and nanosticks, has been extensively studied recently due to its unique properties and many potential applications. As a continuation of our previous review on 1D nano‐PANI (D. H. Zhang and Y. Y. Wang, Mater Sci Eng B 2006, 134(1), 9–19), the research and development of 1D nano‐PANI, including both syntheses and applications, in the past 5 years (2006–2010) are reviewed in this paper. Newly invented chemical methods for fabrication of 1D nano‐PANI, such as solid‐state polymerization, seeding polymerization, UV light‐ and microwave‐assisted polymerization, plasma‐induced polymerization, porous membrane controlled polymerization, and vapor phase polymerization, are briefly reviewed, and morphology controlling of the nanostructures during several synthesizing processes are reported and discussed at first. The formation mechanisms and key factors that affect the morphology evolution of the 1D nano‐PANI are discussed. Novel features of 1D nano‐PANI, such as aligned or oriented, longer, self‐doped, chiral, derivative, carbonized, and dendritic PANI, are summarized. Finally, newly exploited applications of 1D nano‐PANI in the past few years, such as sensors (e.g., gases sensors, biosensors, moisture or humidity sensors, TNT sensors, taste sensors, and noble metal ion sensors), absorbents, catalysts, actuators, supercapacitors, batteries, fuel cells, solar cells, electrochromic devices, hydrogen storages, surface modifiers, field‐effect transistors, and functional materials, are discussed in detail. © 2012 Wiley Periodicals, Inc. Adv Polym Techn 32: E323–E368, 2013; View this article online at http://wileyonlinelibrary.com. DOI 10.1002/adv.21283

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Section: New Applications Of 1d Nano‐panimentioning

confidence: 99%

One‐Dimensional Nanostructured Polyaniline: Syntheses, Morphology Controlling, Formation Mechanisms, New Features, and Applications

Wang¹,

Zhang²

2012

Adv Polym Technol

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“…There is a large scope to develop many new materials by substituting a wide variety of cations at different interstitial sites that can tailor the physical properties of the material significantly for applications. Detailed literature survey shows that though some interesting work has been done on some TB structured compounds, [9][10][11][12][13][14][15][16][17][18][19][20][21] not much work have been reported on structural, dielectric and impedance properties of KPb 2 V 5 O 15 (a new member of TB structural family) ceramics.…”

Section: Introductionmentioning

confidence: 99%

STRUCTURAL AND IMPEDANCE CHARACTERISTICS OF KPb₂V₅O₁₅

Das

Chakraborty

Behera

et al. 2011

Int. J. Mod. Phys. B

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The polycrystalline sample of KPb 2 V 5 O 15 was prepared by a mixed-oxide method relatively at low temperature (i.e., 550 • C). X-ray diffraction studies of the compound showed the formation of single phase orthorhombic crystal structure at room temperature. SEM micrograph showed the homogeneous distribution of grains throughout the sample. Electric properties were analyzed using the complex impedance spectroscopy. The modulus plot showed the presence of both the grain and grain boundary effect. The bulk impedance evaluated from the Nyquist plots was observed to decrease with the rise in temperature, showing a negative temperature coefficient of resistance. The variation of AC electrical conductivity (σ AC ) was measured in a wide temperature (30-500 • C) and frequency (10 2 -10 6 Hz) range. The activation energy of the compound calculated from both the impedance and modulus spectrum was found to be the same. Int. J. Mod. Phys. B 2011.25:3745-3753. Downloaded from www.worldscientific.com by GEORGETOWN UNIVERSITY on 02/03/15. For personal use only. Int. J. Mod. Phys. B 2011.25:3745-3753. Downloaded from www.worldscientific.com by GEORGETOWN UNIVERSITY on 02/03/15. For personal use only.

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“…It readily precipitates under ambient conditions and, having just one crystalline phase, it serves as a suitable model system for controlled crystallisation, without phase transitions complicating the study. Recently, much experimental and theoretical research has been performed in order to control the morphology of ZnO powders to meet the requirements of applications in different fields [11,12]. An equally large amount of work has been devoted to creating ZnO films on conductive substrates for electronic devices [13][14][15].…”

Section: Introductionmentioning

confidence: 99%