Metal Oxide Nanowires for Gas Sensor Applications

Köck, Anton; Defregger, Stefan; Kraker, Elke; Maier, Gerhard; Steinhauer, Stephan; Wimmer-Teubenbacher, Robert

doi:10.1007/s00501-014-0286-5

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…The sheet resistances were measured by using the four-probe method, and were 9 Ω sq −1 and 15 Ω sq −1 before and after annealing, respectively. The ITO NWs fabricated in this way have lots of oxygen vacancies, and they will have great application in gas sensor devices [32][33][34][35].…”

Section: Characteristics Of Ito Nwsmentioning

confidence: 99%

Investigation of the influence of growth parameters on self-catalyzed ITO nanowires by high RF-power sputtering

Zhang

Feng

et al. 2018

Nanotechnology

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ITO nanowires have been successfully fabricated using a radio-frequency sputtering technique with a high RF-power of 250W. The fabrication of the ITO nanowires has been optimized through the study of oxygen flow rates, temperatures and RF-power. The difference in the morphology of the ITO nanowires prepared by using a new target and a used target has been first observed and the mechanism for the difference has been discussed in detail. A hollow structure and air voids within the nanowires are formed during the process of the nanowire growth. The ITO nanowires fabricated by this method has demonstrated good conductivity (15Ω/sq) and a transmittance of more than 64% at a wavelength longer than 550nm after annealing. Furthermore, detailed microstructure studies show that the ITO nanowires exhibit a large number of oxygen vacancies. As a result, it is expected that they can be useful for the fabrication of gas sensor devices.

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Section: Characteristics Of Ito Nwsmentioning

confidence: 99%

Investigation of the influence of growth parameters on self-catalyzed ITO nanowires by high RF-power sputtering

Zhang

Feng

et al. 2018

Nanotechnology

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“…Furthermore, metal oxide‐based nanostructures are given a substantial interest in the development of biosensors. [ 4,11–14 ] Among the existing different metal oxides; zinc oxide (ZnO) has become a favorable choice due to its unique chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Spiked nanorosette: A novel zinc oxide‐gold textured nanostructure for impedance biosensing of target DNA signatures

Haarindraprasad

Devi

Thevendran

et al. 2023

Biotechnology Journal

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The creation of nanostructure is profound for the generation of nanobiosensors in several medical diagnosis. Here, we employed an aqueous hydrothermal route using Zinc‐oxide (ZnO) and Gold (Au), which under optimal conditions formed an ultra‐crystalline rose‐like nanostructure textured with nanowires on the surface, coined as "spiked nanorosette." The spiked nanorosette structures was further characterized to possess crystallites of ZnO and Au grains with average sizes of 27.60 and 32.33 nm, respectively. The intensity for both ZnO (002) and Au (111) planes of the nanocomposite was inferred to be controlled by fine‐tuning the percentage of Au nanoparticles doped in the ZnO/Au matrix, as referred by X‐ray diffraction analysis. The formation of ZnO/Au‐hybrid nanorosettes were additionally verified by the distinct corresponding peaks from photoluminescence and X‐ray photoelectron spectroscopy, supported by electrical validations. The biorecognition properties of the spiked nanorosettes were also examined using custom targeted and non‐target DNA sequences. The DNA targeting capabilities of the nanostructures were analyzed by Fourier Transform Infrared and electrochemical impedance spectroscopy. The fabricated nanowire‐embedded nanorosette exhibited a detection limit at the lower picomolar range of 1 × 10−12 M, with high selectivity, stability and reproducibility and good linearity, under optimal conditions. Impedance‐based techniques are more sensitive to the detection of nucleic acid molecule whereas this novel spiked nanorosette demonstrate promising attributes as excellent nanostructures for nanobiosensor developments and their potential future application for nucleic‐acids or disease diagnostics.

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CMOS Integrable CuO Nanowire Array Gas Sensors Enhanced by Au - Nanoparticles for Humidity Independent Gas Sensing

Wimmer-Teubenbacher

Krainer

Lackner

et al. 2017

Materials Today: Proceedings

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Metal Oxide Nanowires for Gas Sensor Applications

Abstract: ständig integrierten smarten Multi-Parameter Sensor, der für Sicherheitsanwendungen in einem Smart Phone implementiert werden könnte.

Cited by 8 publications

References 22 publications

Investigation of the influence of growth parameters on self-catalyzed ITO nanowires by high RF-power sputtering

Investigation of the influence of growth parameters on self-catalyzed ITO nanowires by high RF-power sputtering

Spiked nanorosette: A novel zinc oxide‐gold textured nanostructure for impedance biosensing of target DNA signatures

CMOS Integrable CuO Nanowire Array Gas Sensors Enhanced by Au - Nanoparticles for Humidity Independent Gas Sensing

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