Electrospun ZnO Nanowires as Gas Sensors for Ethanol Detection

Wu, Wan-Yu; Ting, Jyh‐Ming; Huang, Po‐Jung

doi:10.1007/s11671-009-9271-4

Cited by 104 publications

(76 citation statements)

References 23 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained results (response, recovery and response time towards ethanol) are better than or comparable to the reported results available in literature 14,23,[32][33][34] . Some reports are also available which are better than our results 16,18,20,21 .…”

Section: Gas Responsesupporting

confidence: 84%

Dip pen nanolithography-deposited zinc oxide nanorods on a CMOS MEMS platform for ethanol sensing

et al. 2015

View full text Add to dashboard Cite

This paper reports on the novel deposition of zinc oxide (ZnO) nanorods using dip pen nanolithographic (DPN) technique on SOI (silicon on insulator) CMOS MEMS (micro electro mechanical system) micro-hotplates (MHP) and their characaterisation as a low-cost, low-power ethanol sensor. The ZnO nanorods were synthesized hydrothermally and deposited on the MHP that comprises a tungsten micro-heater embedded in a dielectric membrane with gold interdigitated electrodes (IDEs) on top of an oxide passivation layer.The micro-heater and IDEs were used to heat up the sensing layer and measure its resistance, respectively. The sensor device is extremely power efficient because of the thin SOI membrane. The electro-thermal efficiency of the MHP was found to be 8.2°C/mW, which results in only 42.7 mW power at an operating temperature of 350°C. The CMOS MHP devices with ZnO nanorods were exposed to PPM levels of ethanol in humid air. The sensitivity achieved from the sensor was found to be 5.8%/ppm to 0.39%/ppm for the ethanol concentration range 25 -1000 ppm. The ZnO nanorods showed optimum response at 350°C.The CMOS sensor was found to have a humidity dependence that needs consideration in realworld application. The sensors were also found to be selective towards ethanol when tested in presence of toluene and acetone. We believe that the integration of ZnO nanorods using DPN lithography with a CMOS MEMS substrate offers a low cost, low power, smart ethanol sensor that could be exploited in consumer electronics.

show abstract

Section: Gas Responsesupporting

confidence: 84%

Dip pen nanolithography-deposited zinc oxide nanorods on a CMOS MEMS platform for ethanol sensing

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Electrospun SnO 2 and MoO 3 nanowires show increased stability, faster response time, and higher sensitivity than thin film structures of the same materials in detecting H 2 S and NH 3 , respectively. 58 ZnO nanowires prepared in an electrospinning process have been used to detect ethanol vapor at concentrations as low as 10 ppm at 220 C. 59 WO 3 nanofibers behave as a semiconductor when heated and their electrical resistance varies when exposed to NO 2 gas. 60 TiO 2 /polyvinyl acetate composite nanofibers also show exceptional sensitivity to NO 2 when electrospun onto Pt electrodes.…”

Section: Chemical Sensorsmentioning

confidence: 99%

Electrospinning of Nanomaterials and Applications in Electronic Components and Devices

Miao

Miyauchi²,

Simmons³

et al. 2010

J. Nanosci. Nanotech.

170

View full text Add to dashboard Cite

Electrospinning of nanomaterial composites are gaining increased interest in the fabrication of electronic components and devices. Performance improvement of electrospun components results from the unique properties associated with nanometer-scaled features, high specific surface areas, and light-weight designs. Electrospun nanofiber membrane-containing polymer electrolytes show improved ionic conductivity, electrochemical stability, low interfacial resistance, and improved charge-discharge performance than those prepared from conventional membranes. Batteries with non-woven electrospun separators have increased cycle life and higher rate capabilities than ones with conventional separators. Electrospun nanofibers may also be used as working electrodes in lithium-ion batteries, where they exhibit excellent rate capability, high reversible capacity, and good cycling performance. Moreover, the high surface area of electrospun activated carbon nanofibers improves supercapacitor energy density. Similarly, nanowires having quasi-one-dimensional structures prepared by electrospinning show high conductivity and have been used in ultra-sensitive chemical sensors, optoelectronics, and catalysts. Electrospun conductive polymers can also perform as flexible electrodes. Finally, the thin, porous structure of electrospun nanofibers provides for the high strain and fast response required for improved actuator performance. The current review examines recent advances in the application of electrospinning in fabricating electronic components and devices.

show abstract

“…zinc, is followed by the redeposition of copper on the alloy surface as represented by eqs. (1) and (2). When Cu deposition proceeds, the copper islands are gradually enlarged in the meantime.…”

Section: Resultsmentioning

confidence: 99%

“…Since material morphology can effectively tune their intrinsic chemical and physical properties, the synthesis of materials with different size and architecture may present new opportunities for their applications in optoelectronics [1], sensors [2], batteries [3], fuel cells [4] and solar cells [5]. In recent years, self-assembly of three-dimensional (3-D) structures have received worldwide attention because of their advantages of high surface area, low density, and reduced materials costs.…”

Section: Introductionmentioning

confidence: 99%

Electroless deposition of Cu dendrites decorated with ZnO rods

Wang

Liu

Xue

2011

Cryst. Res. Technol.

View full text Add to dashboard Cite

In this paper, copper dendrites decorated with ZnO rods have been electrolessly deposited on brass substrate by a simple galvanic replacement method. SEM images show that these copper dendrites possess a pronounced trunk and highly ordered branches distributed on both sides of the trunk. Meanwhile, both the trunk and branches are decorated with ZnO rods. The diffusion-limited aggregation (DLA) model has been used to explain the fractal growth of Cu dendritic structures. This method provides a facile route to the synthesis of copper dendrites with ZnO, which can be extended to the preparation of other forms threedimensional (3-D) metal structures or metal/ZnO composites by modifying electrolyte parameters such as composition, concentration, pH and temperature.

show abstract

Electrospun ZnO Nanowires as Gas Sensors for Ethanol Detection

Cited by 104 publications

References 23 publications

Dip pen nanolithography-deposited zinc oxide nanorods on a CMOS MEMS platform for ethanol sensing

Dip pen nanolithography-deposited zinc oxide nanorods on a CMOS MEMS platform for ethanol sensing

Electrospinning of Nanomaterials and Applications in Electronic Components and Devices

Electroless deposition of Cu dendrites decorated with ZnO rods

Contact Info

Product

Resources

About