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Träfflista för sökning "WFRF:(Bengtsson Jörgen 1968 ) "

Sökning: WFRF:(Bengtsson Jörgen 1968 )

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1.
  • Bengtsson, Stefan, 1961-, et al. (författare)
  • Integration of silicon and diamond, aluminum nitride or aluminum oxide for electronic materials
  • 1999
  • Ingår i: conference proceedings:III-V and IV-IV Materials and Processing Challenges for Highly Integrated Microelectronics and Optoelectronics. Symposium..
  • Konferensbidrag (refereegranskat)abstract
    • Material integration for the formation of advanced silicon-on-insulator materials by wafer bonding and etch-back is discussed. Wafer bonding allows the combining of materials that it is not possible to grow on top of each other by any other technique. In our experiments, polycrystalline diamond, aluminum nitride or aluminum oxide films with thickness of 0.1-5 μm were deposited on silicon wafers. Bonding experiments were made with these films to bare silicon wafers with the goal of forming silicon-on-insulator structures with buried films of polycrystalline diamond, aluminum nitride or aluminum oxide. These silicon-on-insulator structures are intended to address self-heating effects in conventional silicon-on-insulator materials with buried layers of silicon dioxide. The surfaces of the deposited diamond films were, by order of magnitude, too rough to allow direct bonding to a silicon wafer. In contrast the deposited aluminum nitride and aluminum oxide films did allow direct bonding to silicon. Bonding of the diamond surface to silicon was instead made through a deposited and polished layer of polycrystalline silicon on top of the diamond. In the case of the aluminum nitride electrostatic bonding was also demonstrated. Further, the compatibility of these insulators to silicon process technology was investigated
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3.
  • Engström, David, 1976-, et al. (författare)
  • Analog low-loss full-range phase modulation by utilizing a V-shaped switched ferroelectric liquid-crystal cell in reflective mode
  • 2006
  • Ingår i: Optics Letters. - 1539-4794. ; 31:19, s. 2906-2908
  • Tidskriftsartikel (refereegranskat)abstract
    • We have studied the analog (V-shaped switching) mode in ferroelectric liquid crystals in reflective mode for analog phase modulation applications. We have found that several combinations of cell thicknesses and input polarization states exist for which near-lossless analog phase modulation with a range of ~2π rad is obtained, and we demonstrate one such combination experimentally. Despite a slight deviation from the ideal conditions, e.g., the tilt angle was 38° instead of the desired 45°, virtually pure 1.6π rad phase modulation was obtained; the measured values agree very well with our numerical simulations of the real device.
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5.
  • Engström, David, 1976-, et al. (författare)
  • Three-level phase modulator based on orthoconic antiferroelectric liquid crystals
  • 2006
  • Ingår i: Optics Letters. - 1539-4794. ; 31:21, s. 3158-3160
  • Tidskriftsartikel (refereegranskat)abstract
    • Surface-stabilized orthoconic antiferroelectric liquid crystals (OAFLCs) have a director tilt of θ=45° and are, with no field applied, negatively uniaxial with the optic axis perpendicular to the cell substrates. We demonstrate that OAFLCs can be utilized to achieve lossless phase modulation with three almost equidistant phase levels. This turns out to be true also for polymer-stabilized OAFLCs, where the polymer network increases the switching speed of the device without affecting the phase modulation appreciably.
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8.
  • Hedsten, Karin, 1964-, et al. (författare)
  • Downscaling optical biosensing system
  • 2008
  • Ingår i: XXII Eurosensors, Dresden, Tyskland, 7100 september 2008, s. 205.
  • Konferensbidrag (refereegranskat)
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9.
  • Hedsten, Karin, 1964-, et al. (författare)
  • Downscaling Optical Biosensing System
  • 2008
  • Ingår i: Proceedings of Micro System Workshop 2008 (MSW08) 6-7 Maj, Göteborg, Sweden. ; MSW08, s. 2-6
  • Konferensbidrag (övrigt vetenskapligt)
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10.
  • Hedsten, Karin, 1964-, et al. (författare)
  • Optical Label-Free Nanoplasmonic Biosensing Using a Vertical-Cavity Surface-Emitting Laser and Charge-Coupled Device
  • 2010
  • Ingår i: Analytical Chemistry. - 0003-2700. ; 82:4
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a compact platform for biochemosensing based on the combination of a vertical-cavity surface- emitting laser (VCSEL) light source, microelectrome- chanical systems (MEMS)-based microoptics, a specially designed nanoplasmonic sensing chip, and charge- coupled device (CCD) detector. The platform does not require any spectral analyzer for signal evaluation, show- ing good promise for facile integration, neither does it use any microscope setup for the signal collection or imaging. The analytical capabilities of the developed biochemosens- ing platform are demonstrated by evaluation of the protein-substrate (biotinylated bovine serum albumin- gold) and the protein-protein (biotin-NeutrAvidin) bind- ing kinetics, which is further compared to detection based on conventional optical extinction spectroscopy. The instrument is able to detect low femtomoles of adsorbed proteins with the limit of detection comparable to the state-of-the-art research and commercial optical label-free biochemosensors.
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  • Resultat 1-10 av 75
  • [1]234567...8Nästa
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Bengtsson, Jörgen, 1 ... (72)
Larsson, Anders, 195 ... (36)
Gustavsson, Johan S. ... (23)
Haglund, Åsa, 1976-, (18)
Engström, David, 197 ... (13)
Enoksson, Peter, 195 ... (12)
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Hedsten, Karin, 1964 ... (12)
Westbergh, Petter, 1 ... (8)
Haglund, Erik, 1985- ... (8)
Goksör, Mattias, 197 ... (7)
Adolfsson, Göran, 19 ... (7)
Borgentun, Carl, 197 ... (7)
Melin, Jonas (7)
Karlén, David, 1979- ... (7)
Stattin, Martin, 198 ... (6)
Kögel, Benjamin, 197 ... (6)
Magnusson, Anders, 1 ... (6)
Modh, Peter, 1968-, (6)
Wang, Shumin, 1963-, (5)
Sadeghi, Mahdad, 196 ... (5)
Melanen, P. (5)
Nikolajeff, Fredrik, (5)
Galt, Sheila, 1956-, (5)
D'havé, Koen, 1972-, (4)
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