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Träfflista för sökning "WFRF:(Anoshkin Ilya) srt2:(2017)"

Sökning: WFRF:(Anoshkin Ilya) > (2017)

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1.
  • Anoshkin, Ilya, 1980-, et al. (författare)
  • Single walled carbon nanotube quantification method employing the Raman signal intensity
  • 2017
  • Ingår i: Carbon. - United Kingdom : Elsevier BV. - 0008-6223 .- 1873-3891. ; 116, s. 547-552
  • Tidskriftsartikel (refereegranskat)abstract
    • A new technique for measuring the number of single walled carbon nanotubes (SWCNTs) and their concentration in a carbon nanotube layer is developed in this work. It is based on the G peak intensity of the Raman spectrum, together with precise mass and optical absorbance measurements. The dependence of the number of the carbon nanotubes on the phonon scattering intensity is observed. This method opens an opportunity for the quantitative mapping of sp2 carbon atom distribution in the SWCNT layers with a resolution limited by the focused laser spot size.
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2.
  • Lioubtchenko, Dmitri V., et al. (författare)
  • W-band phase shifter based on optimized optically controlled carbon nanotube layer
  • 2017
  • Ingår i: 2017 IEEE MTT-S International Microwave Symposium (IMS). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509063604 ; , s. 1188-1191
  • Konferensbidrag (refereegranskat)abstract
    • Phase shifting in a dielectric rod waveguide (DRW), loaded with carbon nanotube (CNT) layers of different thickness, was studied experimentally under light illumination in the frequency range of 75-110 GHz. The dependence of efficiency of the phase shifting, in terms of phase shift per light intensity and millimeter wave attenuation, on the optical transparency of the CNT-layer is investigated in this paper. The best result, a phase shifter of 0-15° with less than 0.1 dB additional signal loss in the W-band was achieved for a 95% transparent CNT layer at 23 mW/mm2 light intensity of a tungsten halogen lamp (main radiation spectrum is 550-680 nm). The overall insertion loss of the phase shifter including two DRW tapering sections serving as transitions to rectangular waveguides are 3 to 5 dB in the W-band, about 2 dB is attributed to the CNT DRW section. This comprises, for the first time, an optically-controlled CNT-based DRW phase shifter with phase shift and insertion loss levels suitable for practical applications.
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