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

На основе анализа АСМ изображений изучен механизм трансформации надмолекулярной структуры пленок полианилина и композита «полианилин/углеродные нанотрубки» в форме основания в результате совместного воздействия допанта – додецилбензолсульфокислоты и растворителя.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 dopant–dodecylbenzenesulfonic acid and a solvent was studied

Combination of scanning force microscopy methods to evaluation the electrophysical parameters of individual multiwalled carbon nanotubes

Путем совместного использования методов электростатической силовой микроскопии и проводящей атомно-силовой микроскопии разработана методика определения электрофизических параметров индивидуальных многостенных углеродных нанотрубок.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 2–10 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 “PANI-CNTs” 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 ± 0.2, 15.3 ± 0.5 and 2.2 ± 0.1 ppm−1 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 “PANI-CNT”