The Gas-Sensing Characteristics Of Percolating 2-D SnO[sub 2] Nanowire Mats As A Platform For Electronic Nose Devices

Sysoev, Victor V.; Kiselev, I.; Schneider, Thomas; Bruns, Michael; Sommer, Martin; Habicht, W.; Musatov, Vyacheslav Yu.; Strelcov, E.; Kolmakov, Andrei; Pardo, Matteo; Sberveglieri, Giorgio

doi:10.1063/1.3156563

Cited by 4 publications

(3 citation statements)

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“…Contact resistance in tunneling junctions representing significant problem for preparation of highly conductive macroscale materials from nanoscale building blocks. [27][28][29] Composite materials made of longer NWs have intrinsically better mechanical properties than the same materials made of shorter ones because of their ability to offer higher percolation values. [30][31][32] Therefore, it is important to be able to increase the aspect ratio of the NWs synthesized following the same pattern as it is being done for carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

“…High aspect ratios also facilitate NW alignment on substrates , and provide more efficient charge transport over large distances by eliminating tunneling junctions between the individual wires. Contact resistance in tunneling junctions representing significant problem for preparation of highly conductive macroscale materials from nanoscale building blocks. – Composite materials made of longer NWs have intrinsically better mechanical properties than the same materials made of shorter ones because of their ability to offer higher percolation values. – …”

Section: Introductionmentioning

confidence: 99%

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Effect of CdSe Nanoparticles on the Growth of Te Nanowires: Greater Length and Tortuosity and Nonmonotonic Concentration Effect

et al. 2010

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Improved control over nanowire (NW) geometry and composition offers multiple benefits for design material and devices, including uses in complex nanoelectronic circuits, facilitating their organization on substrates, providing more efficient charge transport over large distances, and greater mechanical strength. Te NWs have many interesting thermoelectric, piezoelectric, conducting, and photoconducting properties and are highly reactive with numerous chemicals, allowing Te NWs to be used as templates for NWs of other compositions. Te NWs are made in this work from CdTe nanoparticles (NPs) by slow oxidation. Te NWs with average lengths of 6.63 ( 1.07 µm and aspect ratios of 50 were initially formed. Unexpectedly, the presence of CdSe NPs results in a drastic increase in the length, aspect ratio, and tortuosity of the Te NWs. We believe that Se 2is being incorporated into the Te seeds as elemental Se, fouling them and reducing the number of viable Te seeds, which allows longer Te NWs to form. Excessive amount of CdTe NPs stops the growth of Te NWs completely making the concentration dependence strongly nonmonotonic. The longest tortuous NWs grown in this fashion have lengths of 15.56 ( 4.16 µm and aspect ratios 103. This work reveals a novel process taking place between growing NW and NPs. These finding indicate advantages of using NPs for reaction control for preparation of NW with high practical relevance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of CdSe Nanoparticles on the Growth of Te Nanowires: Greater Length and Tortuosity and Nonmonotonic Concentration Effect

et al. 2010

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“…With the use of nanowire mats and a sensor array it is possible to have a fast detection combined with good recognition in dry and humid air [4]. The nanowires are applied on an interdigital electrode set which allows one to measure the resistance of the sensing segments.…”

Section: Introductionmentioning

confidence: 99%

UV assisted room temperature gas recognition with SnO<inf>2</inf> nanowires

Augustin

Sommer

2014

14th IEEE International Conference on Nanotechnology

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Room temperature operated recognition of gases and smells by UV activated SnO 2 nanowires are demonstrated in this paper. The recognition and separation of CO, isopropanol, and benzene in concentrations down to 10 ppm in dry and humid air is shown. Also the smells of different burnt materials or fruit can be distinguished via linear discriminant analysis. The detection of the gases is possible within 10 s. 978-1-4799-5622-7/$31.00 ©2014 IEEE

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