دورية أكاديمية
A sub 20 nm metal-conjugated molecule junction acting as a nitrogen dioxide sensor.
| العنوان: | A sub 20 nm metal-conjugated molecule junction acting as a nitrogen dioxide sensor. |
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| المؤلفون: | Wani IH; Applied Materials Science, Department of Engineering Sciences, Uppsala University, Box 534, Uppsala SE-75121, Sweden. Klaus.leifer@angstrom.uu.se., Jafri SHM, Warna J, Hayat A, Li H, Shukla VA, Orthaber A, Grigoriev A, Ahuja R, Leifer K |
| المصدر: | Nanoscale [Nanoscale] 2019 Apr 04; Vol. 11 (14), pp. 6571-6575. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: RSC Pub Country of Publication: England NLM ID: 101525249 Publication Model: Print Cited Medium: Internet ISSN: 2040-3372 (Electronic) Linking ISSN: 20403364 NLM ISO Abbreviation: Nanoscale Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Cambridge, UK : RSC Pub. |
| مستخلص: | 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. |
| تواريخ الأحداث: | Date Created: 20190328 Date Completed: 20190404 Latest Revision: 20190405 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1039/c8nr08417c |
| PMID: | 30916070 |
| قاعدة البيانات: | MEDLINE |
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