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Träfflista för sökning "WFRF:(Jedrasik Piotr 1957 ) "

Sökning: WFRF:(Jedrasik Piotr 1957 )

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  • Gustavsson, Johan, 1974-, et al. (författare)
  • Mode and polarization control in VCSELs using shallow surface structures
  • 2007
  • Ingår i: IET Optoelectronics. ; 1:5, s. 197-205
  • Tidskriftsartikel (refereegranskat)abstract
    • Monolithic techniques for mode and polarisation control in vertical-cavity surface emitting lasers (VCSELs) using shallow surface structures are summarized and put in the context with other techniques in terms of performance and manufacturability. The method of using circular-symmetric surface structures for mode control and their combination with a sub-wavelength surface grating for simultaneous mode and polarisation control is described in detail, and adherent experimental results for both 850-nm and 1.3-µm oxide-confined VCSELs are presented.
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  • Farmakis, F. V., et al. (författare)
  • Field-effect transistors with thin ZnO as active layer for gas sensor applications
  • 2007
  • Ingår i: MICROELECTRONIC ENGINEERING. - 0167-9317. ; 85:5-6, s. 1035-1038
  • Konferensbidrag (refereegranskat)abstract
    • Zinc oxide based field-effect devices prepared for gas sensing applications are studied. For this purpose, bottom-gate transistors were fabricated using Pd as source and drain interdigitated electrodes with gate lengths varying from 0.3 to 2 mu m. Thin (50 nm) zinc oxide films were grown with the aid of pulsed laser deposition (PLD) at room temperature and served as active and sensing layer. AFM and XRD analysis demonstrated the polycrystalline nature of the c-axis oriented ZnO films with nanoscale grain size (20-40 nm) with relatively high average roughness. Electrical and gas sensing measurements from the above-mentioned devices are presented. (C) 2008 Elsevier B.V. All rights reserved.
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  • Jedrasik, Piotr, 1957-, et al. (författare)
  • Application of calixarene for nanometer magnetic particle fabrication
  • 2000
  • Ingår i: Microelectronic Engineering. - 0167-9317. ; 53, s. 497-500
  • Konferensbidrag (refereegranskat)abstract
    • An application of the negative tone electron beam resist Calixarene for fabrication of nanometer magnetic particles is reported. Thorough resist characterisation is performed. Proximity tests for characterization of the intraproximity behaviour of the resist on the tested substrate is investigated to compensate for modulation of lateral dimensions due to electron scattering. Magnetic particles were fabricated by a combination of EBL and ion beam milling using Calixarene as a transfer layer down to Fe. We fabricated arrays of circular particles with characteristic dimensions down to 40 nm. Initial results of topographic and magnetic force microscopy are reported
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