uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Fluctuation-enhanced sensing with organically functionalized gold nanoparticle gas sensors targeting biomedical applications
Gdansk Univ Technol, Fac Elect Telecommun & Informat, Narutowicza 11-12, PL-80233 Gdansk, Poland.
Gdansk Univ Technol, Fac Elect Telecommun & Informat, Narutowicza 11-12, PL-80233 Gdansk, Poland.
Gdansk Univ Technol, Fac Elect Telecommun & Informat, Narutowicza 11-12, PL-80233 Gdansk, Poland.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Show others and affiliations
2016 (English)In: Talanta: The International Journal of Pure and Applied Analytical Chemistry, ISSN 0039-9140, E-ISSN 1873-3573, Vol. 160, 9-14 p.Article in journal (Refereed) Published
Abstract [en]

Detection of volatile organic compounds is a useful approach to non-invasive diagnosis of diseases through breath analysis. Our experimental study presents a newly developed prototype gas sensor, based on organically-functionalized gold nanoparticles, and results on formaldehyde detection using fluctuation-enhanced gas sensing. Formaldehyde was easily detected via intense fluctuations of the gas sensor's resistance, while the cross-influence of ethanol vapor (a confounding factor in exhaled breath, related to alcohol consumption) was negligible.

Place, publisher, year, edition, pages
2016. Vol. 160, 9-14 p.
Keyword [en]
Organically-functionalized gold nanoparticles; Formaldehyde detection; Fluctuation enhanced sensing; Flicker noise
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:uu:diva-302550DOI: 10.1016/j.talanta.2016.06.063ISI: 000383524400002PubMedID: 27591581OAI: oai:DiVA.org:uu-302550DiVA: diva2:958091
Funder
EU, European Research Council, 267234
Available from: 2016-09-06 Created: 2016-09-06 Last updated: 2016-10-18Bibliographically approved
In thesis
1. Thin films for indoor air monitoring: Measurements of Volatile Organic Compounds
Open this publication in new window or tab >>Thin films for indoor air monitoring: Measurements of Volatile Organic Compounds
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Volatile organic compounds (VOCs) in the indoor air have adverse effects on the dwellers residing in a building or a vehicle. One of these effects is called sick building syndrome (SBS). SBS refers to situations in which the users of a building develop acute health effects and discomfort depending on the time they spend inside some buildings without having any specific illness. Furthermore, monitoring volatile organic compounds could lead to early diagnosis of specific illnesses through breath analysis. Among those VOCs formaldehyde, acetaldehyde can be listed.

In this thesis, VOC detecting thin film sensors have been investigated. Such sensors have been manufactured using semiconducting metal oxides, ligand activated gold nanoparticles and Graphene/TiO2 mixtures. Advanced gas deposition unit, have been used to produce NiO thin films and Au nanoparticles. DC magnetron sputtering has been used to produce InSnO and VO2 thin film sensors. Graphene/TiO2 sensors have been manufactured using doctor-blading.

While presenting the results, first, material characterization details are presented for each sensor, then, gas sensing results are presented. Morphologies, crystalline structures and chemical properties have been analyzed using scanning electron microscopy, X-ray diffraction and X-ray photo electron spectroscopy. Furthermore, more detailed analyses have been performed on NiO samples using extended X-ray absorption fine structure method and N2 adsorption measurements. Gas sensing measurements were focused on monitoring formaldehyde and acetaldehyde. However, responses ethanol and methane were measured in some cases to monitor selectivity. Graphene/TiO2 samples were used to monitor NO2 and NH3. For NiO thin film sensors and Au nano particles, fluctuation enhanced gas sensing is also presented in addition to conductometric measurements. 

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2016. 78 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1422
Keyword
gas sensor, thin film, adcanced gas depostion, sputter deposition, nickel oxide, gold nanoparticles, indium tin oxide, acetaldehyde, formaldehyde
National Category
Nano Technology
Identifiers
urn:nbn:se:uu:diva-302558 (URN)978-91-554-9683-8 (ISBN)
Public defence
2016-10-21, Room Å2001, Ångströmlaboratoriet, Lägerhyddsv 1, 13:15 (English)
Opponent
Supervisors
Funder
EU, FP7, Seventh Framework Programme, 267234
Available from: 2016-09-28 Created: 2016-09-06 Last updated: 2016-10-14Bibliographically approved

Open Access in DiVA

The full text will be freely available from 2018-11-01 00:00
Available from 2018-11-01 00:00

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Cindemir, UmutTopalian, ZarehGranqvist, Claes-Göran
By organisation
Solid State Physics
In the same journal
Talanta: The International Journal of Pure and Applied Analytical Chemistry
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 361 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf