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Träfflista för sökning "WFRF:(Vasiliev A.) ;lar1:(umu)"

Sökning: WFRF:(Vasiliev A.) > Umeå universitet

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1.
  • Kukkola, J, et al. (författare)
  • Novel printed nanostructured gas sensors
  • 2011
  • Ingår i: Procedia Engineering. - : Elsevier. - 1877-7058 .- 1877-7058. ; 25, s. 896-899
  • Tidskriftsartikel (refereegranskat)abstract
    • There is a need for low-cost mass-production circuits on various substrates, possibly performing some simple functions as switches, antennas, displays, and sensors. Also in the field of gas sensors widely used in several applications there is a need for such novel fabrication technologies and materials. In this paper, we present three gas sensor structures fabricated using novel printing techniques. Inkjet and gravure printing techniques were used for fabrication of resistive WO3 nanoparticle gas sensors for detection of NO, and inkjet printing was utilized for fabrication of solid electrolyte (mixture of H3PW12O40 and PVC) in a nanostructured Metal-Electrolyte-Insulator- Semiconductor (MEIS) transistor for detection of H2. The sensor structures were found to be sensitive for detection of NO below 10 ppm, and H2 below 100 ppm concentrations in synthetic air, respectively.
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2.
  • Zagaynova, Valeria, et al. (författare)
  • The influence of boron doping on magnetic properties of oxygen-eroded graphite
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • A series of nanoporous oxygen-eroded graphites prepared by a redox reaction in a closed system between graphite and CuO, with varying amounts of boron, has been studied. We have found that introduction of boron affects the defect-induced magnetism of disordered nanoporous carbon in a complex way, changing both paramagnetic and diamagnetic contributions. Small concentrations of boron dopant enhance magnetic response from the system, while higher concentrations suppress magnetism due to annihilation of localized states.
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  • Resultat 1-2 av 2

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