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A sub 20 nm metal-c...
A sub 20 nm metal-conjugated molecule junction acting as a nitrogen dioxide sensor
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- Wani, Ishtiaq Hassan, 1985- (author)
- Uppsala universitet,Tillämpad materialvetenskap,Department of Electrical Engineering, Mirpur University of Science and Technology (MUST) Mirpur Azad Kashmir, Pakistan
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- Jafri, Syed Hassan Mujtaba, 1979- (author)
- Uppsala universitet,Tillämpad materialvetenskap,Department of Electrical Engineering, Mirpur University of Science and Technology (MUST) Mirpur Azad Kashmir, Pakistan
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- Wärnå, John (author)
- Uppsala universitet,Materialteori
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- Hayat, Aqib (author)
- Uppsala universitet,Tillämpad materialvetenskap
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- Li, Hu, 1986- (author)
- Uppsala universitet,Tillämpad materialvetenskap
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- Shukla, Vivek A., 1988- (author)
- Uppsala universitet,Materialteori
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- Orthaber, Andreas, 1979- (author)
- Uppsala universitet,Syntetisk molekylär kemi
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- Grigoriev, Anton (author)
- Uppsala universitet,Materialteori
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- Ahuja, Rajeev, 1965- (author)
- Uppsala universitet,Materialteori
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- Leifer, Klaus, 1965- (author)
- Uppsala universitet,Tillämpad materialvetenskap
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Nanoscale. - : Royal Society of Chemistry (RSC). - 2040-3364 .- 2040-3372. ; 11:14, s. 6571-6575
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https://uu.diva-port... (primary) (Raw object)
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Abstract
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- The interaction of a gas molecule with a sensing material causes the highest change in the electronic structure of the latter, when this material consists of only a few atoms. If the sensing material consists of a short, conductive molecule, the sensing action can be furthermore probed by connecting such molecules to nanoelectrodes. Here, we report that NO2 molecules that adhere to 4,4'-biphenyldithiol (BPDT) bound to Au surfaces lead to a change of the electrical transmission of the BPDT. The related device shows reproducible, stable measurements and is so far the smallest (<20 nm) gas sensor. It demonstrates modulation of charge transport through molecules upon exposure to nitrogen dioxide down to concentrations of 55 ppb. We have evaluated several devices and exposure conditions and obtained a close to linear dependence of the sensor response on the gas concentration.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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Nanoscale
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- By the author/editor
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Wani, Ishtiaq Ha ...
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Jafri, Syed Hass ...
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Wärnå, John
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Hayat, Aqib
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Li, Hu, 1986-
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Shukla, Vivek A. ...
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show more...
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Orthaber, Andrea ...
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Grigoriev, Anton
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Ahuja, Rajeev, 1 ...
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Leifer, Klaus, 1 ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Nano technology
- Articles in the publication
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Nanoscale
- By the university
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Uppsala University