Project detail

Advanced chemoresistive device based on gas sensitive single-1D nanostructures (1D-SENS)

Duration: 01.01.2022 — 31.12.2024

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2022-04-21 - 2024-12-31)

On the project

The project will deal with a complex research of gas sensing properties of a chemoresistive device which employs single-1D nanostructure. Such device will be prepared by fixing the 1D nanostructured "basic" oxide decorated with either metal catalyst or another oxide (modifying the charge-transport phenomena in the 1D nanostructure) on a chip platform with a possibility of self-heating. In local scale, the surface physico-chemical processes will be studied in-situ by Near- Atmosphere Pressure X-ray Photoemission Spectroscopy (NAP-XPS) or other spectroscopy techniques (e.g., Raman, FTIR, UPS, SRPES) to better understand the sensing mechanism. Simultaneously, the "integral" parameters of the device (measuring current, operating temperature generated by self-heating) will be monitored. Finally, the results of both local-scale and "integral" studies will be put into context with the performance parameters of chemoresistive device (sensitivity, detection limit, selectivity, heating/measuring current, response time, recovery time).

Keywords
chemoresistor; gas sensing; nanowire; nanotube; heterojunction; Schottky contact; NAP-XPS; FTIR

Mark

22-14886S

Default language

English

People responsible

Claros Vargas Martha Carmiňa, Dr. - fellow researcher
Chmela Ondřej, Ing., Ph.D. - fellow researcher
Smísitel Petr, Mgr. - fellow researcher
Hubálek Jaromír, prof. Ing., Ph.D. - principal person responsible

Units

Smart Nanodevices
- (2021-04-14 - not assigned)

Results

SMÍSITEL, P.; HUBÁLEK, J.; CHMELA, O. Study of oxygen adsorption/desorption thermodynamics of single WO3 nanowire. 2022.
Detail

SMÍSITEL, P.; ŠIMŮNKOVÁ, H.; CHMELA, O.; CLAROS VARGAS, M.; VALLEJOS VARGAS, S.; HUBÁLEK, J. Electrical Characterization of Hydrothermally Synthesized Metal Oxide Nanowires with Regard to Oxygen Adsorption/Desorption Thermodynamics. In NANOCON 2022 Conference Proceedings. Proceedings 12th International Conference on Nanomaterials - Research & Application. 1st Edition. TANGER Ltd., 2023. p. 64-70. ISBN: 978-80-88365-09-9. ISSN: 2694-930X.
Detail

ŠIMŮNKOVÁ, H.; SMÍSITEL, P.; CHMELA, O.; VALLEJOS VARGAS, S.; HUBÁLEK, J. NO2 Adsorption/Desorption Thermodynamics in Single Tungsten Oxide Nanowire Gas Sensors. In 2023 IEEE SENSORS. 2023 IEEE SENSORS. online: IEEE, 2023. p. 1-4. ISBN: 979-8-3503-0387-2. ISSN: 2168-9229.
Detail

SMÍSITEL, P.; ŠIMŮNKOVÁ, H.; CHMELA, O.; CLAROS VARGAS, M.; VALLEJOS VARGAS, S.; HUBÁLEK, J. Electrical characterization of hydrothermally synthesized manganese dioxide nanowires with regard to NO2 adsorption/desorption thermodynamics. In Engineering Proceedings. Engineering Proceedings. MDPI, 2023. p. 1-6. ISSN: 2673-4591.
Detail

PILIAI, L.; DINHOVA, T.N.; JANATA, M.; BALAKIN, D.; VALLEJOS, S.; OTTA, J.; STEFKOVA, J.; FISER, L.; FITL, P.; NOVOTNY, M.; HUBALEK, J.; VOROCHTA, M.; MATOLINOVA, I.; VRNATA, M. NAP-XPS study of surface chemistry of CO and ethanol sensing with WO3 nanowires-based gas sensor. Sensors and Actuators B: Chemical, 2023, vol. 397, no. Prosinec 2023, p. 1-12. ISSN: 0925-4005.
Detail

CHMELA, O.; GABLECH, I.; SADÍLEK, J.; BRODSKÝ, J.; VALLEJOS VARGAS, S. ChemFET gas nanosensor arrays with alignment windows for assembly of single nanowires. NANO RES, 2023, vol. 16, no. 4, p. 10244-110234. ISSN: 1998-0124.
Detail

Responsibility: Hubálek Jaromír, prof. Ing., Ph.D.