13 research outputs found
Electrical properties of irradiated individual multi-walled carbon nanotubes at gases adsorption
Evaluation of mechanical and electrical parameters of individual polyaniline nanoparticles
The work was carried out according to the state task of the Omsk Scientific Center SB RAS (project registration number AAAA-A17-117041210227-8)
Dielectric characterization of erythrocytes by electrostatic force microscopy
The work was carried out according to the state task of the Omsk Scientific Center SB RAS (project registration number AAAA-A17-117041210227-8)
Gas sensing properties of individual composite nanostructures TiO2-x/MWCNT and SnOx/MWCNT measured by scanning force microscopy
The work was carried out according to the state task of the Omsk Scientific Center SB RAS (project registration number AAAA-A17-117041210227-8)
AFM study of the supramolecular structure transformation of polyaniline and composite "polyaniline/carbon nanotubes" upon doping with dodecylbenzenesulfonic acid in the presence of a solvent
ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ Π°Π½Π°Π»ΠΈΠ·Π° ΠΠ‘Π ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ ΠΈΠ·ΡΡΠ΅Π½ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌ ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΈΠΈ Π½Π°Π΄ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎΠΉ ΡΡΡΡΠΊΡΡΡΡ ΠΏΠ»Π΅Π½ΠΎΠΊ ΠΏΠΎΠ»ΠΈΠ°Π½ΠΈΠ»ΠΈΠ½Π° ΠΈ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ° Β«ΠΏΠΎΠ»ΠΈΠ°Π½ΠΈΠ»ΠΈΠ½/ΡΠ³Π»Π΅ΡΠΎΠ΄Π½ΡΠ΅ Π½Π°Π½ΠΎΡΡΡΠ±ΠΊΠΈΒ» Π² ΡΠΎΡΠΌΠ΅ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π΄ΠΎΠΏΠ°Π½ΡΠ° β Π΄ΠΎΠ΄Π΅ΡΠΈΠ»Π±Π΅Π½Π·ΠΎΠ»ΡΡΠ»ΡΡΠΎΠΊΠΈΡΠ»ΠΎΡΡ ΠΈ ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Ρ.Based AFM image analysis, the supramolecular structure transformation mechanism of polyaniline films and the "polyaniline/carbon nanotube" composite films in the base form as a result of combined effect of dopantβdodecylbenzenesulfonic acid and a solvent was studied
Combination of scanning force microscopy methods to evaluation the electrophysical parameters of individual multiwalled carbon nanotubes
ΠΡΡΠ΅ΠΌ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎΠ³ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΠ»ΠΎΠ²ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ ΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΠ΅ΠΉ Π°ΡΠΎΠΌΠ½ΠΎ-ΡΠΈΠ»ΠΎΠ²ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΡΡ
ΠΌΠ½ΠΎΠ³ΠΎΡΡΠ΅Π½Π½ΡΡ
ΡΠ³Π»Π΅ΡΠΎΠ΄Π½ΡΡ
Π½Π°Π½ΠΎΡΡΡΠ±ΠΎΠΊ.Based on a combination of electrostatic force microscopy and conductive atomic force microscopy, the technique for determining the electrical parameters of individual multiwalled carbon nanotubes was developed
Effect of Nitrogen Atoms in the CNT Structure on the Gas Sensing Properties of PANI/CNT Composite
Herein we report the gas-sensitive properties to ammonia (at 2β10 ppm) of individual nanostructures of a polyaniline/nitrogen-doped carbon nanotube composite with a nitrogen content of 0 at.% (uCNTs), 2 at.% (N-CNTs) and 4 at.% (N+-CNTs). Doping of nanotubes with nitrogen was carried out in order to both reduce the electron work function, to form a potential barrier at the βPANI-CNTsβ interface, and reduce the contribution of nanotubes to the composite conductivity. An increase in the nitrogen content in CNTs leads to an increase in conductivity, a decrease in the work function, and the formation of defects in the outer walls of CNTs. It was found that the structural and chemical state of the polymer layer of all composites is the same. However, polymer morphology on nanotubes changes dramatically with increasing nitrogen content in CNTs: a thin smooth layer on uCNTs, a globular layer on N-CNTs, and a thick layer with a sheet-like structure on N+-CNTs. All composites showed the same response time (~20 s) and recovery time (~120 s). Ammonia sensitivity was 10.5 Β± 0.2, 15.3 Β± 0.5 and 2.2 Β± 0.1 ppmβ1 for PANI/uCNTs, PANI/N-CNTs and PANI/N+-CNTs, respectively. Based on the results obtained here, we came to the conclusion that the morphological features of the polymer layer on CNTs with different nitrogen content have a dominant effect on the gas reaction than the change in the electronic properties of the polymer at the interface βPANI-CNTβ