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  • 1. Afrasiabi, R.
    et al.
    Soderberg, L. M.
    Joensson, H. N.
    Björk, Per
    RISE., Swedish ICT, Acreo.
    Svahn, H. A.
    Linnros, J.
    Integration of a droplet-based microfluidic system and silicon nanoribbon FET sensor2016Ingår i: Micromachines, ISSN 2072-666X, E-ISSN 2072-666X, Vol. 7, nr 8, 134Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We present a novel microfluidic system that integrates droplet microfluidics with a silicon nanoribbon field-effect transistor (SiNR FET), and utilize this integrated system to sense differences in pH. The device allows for selective droplet transfer to a continuous water phase, actuated by dielectrophoresis, and subsequent detection of the pH level in the retrieved droplets by SiNR FETs on an electrical sensor chip. The integrated microfluidic system demonstrates a label-free detection method for droplet microfluidics, presenting an alternative to optical fluorescence detection. In this work, we were able to differentiate between droplet trains of one pH-unit difference. The pH-based detection method in our integrated system has the potential to be utilized in the detection of biochemical reactions that induce a pH-shift in the droplets.

  • 2. Ahniyaz, A
    et al.
    Seisenbaeva, GA
    Häggström, L
    Kamali, S
    Kessler, G
    Nordblad, P
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Bergström, L
    Preparation of iron oxide nanocrystals by surfactant-free or oleic acid-assisted thermal decomposition of a Fe(III) alkoxide2008Ingår i: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 320, 781-87 s.Artikel i tidskrift (Refereegranskat)
  • 3.
    Ahrentorp, F
    et al.
    RISE., Swedish ICT, Acreo.
    Astalan, A
    Blomgren, J
    RISE., Swedish ICT, Acreo.
    Jonasson, C
    Wetterskog, E
    Svedlindh, P
    Lak, A
    Ludwig, F
    van Ijzendoorn, LJ
    Westphal, F
    Gruttner, C
    Gehrke, N
    Gustafsson, S
    Olsson, E
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Effective particle magnetic moment of multi-core particles2015Ingår i: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 380, 221-6 s.Artikel i tidskrift (Refereegranskat)
  • 4.
    Ahrentorp, F
    et al.
    RISE., Swedish ICT, Acreo.
    Astalan, AP
    Jonasson, C
    Blomgren, J
    RISE., Swedish ICT, Acreo.
    Qi, B
    Thompson Mefford, O
    Yan, M
    Courtois, J
    Berret, JF
    Fresnais, J
    Sandre, O
    Dutz, S
    Muller, R
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Sensitive High Frequency AC Suceptometry in Magnetic Nanoparticle Applications2010Ingår i: AIP Conference Proceedings, Vol. 1311, 213-23 s.Artikel i tidskrift (Refereegranskat)
  • 5.
    Ahrentorp, Fredrik
    et al.
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Blomgren, Jacob
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Jonasson, Christian
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Sarwe, Anna
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Sepehri, Sobhan
    Chalmers University of Technology, Göteborg, Sweden.
    Eriksson, Emil
    Chalmers University of Technology, Göteborg, Sweden.
    Kalaboukhov, Alexei
    Chalmers University of Technology, Göteborg, Sweden.
    Jesorka, Aldo
    Chalmers University of Technology, Göteborg, Sweden.
    Winkler, Dag
    Chalmers University of Technology, Göteborg, Sweden.
    Schneiderman, Justin F.
    University of Gothenburg and MedTech West, Göteborg, Sweden.
    Nilsson, Mats
    Stockholm University, Stockholm, Sweden.
    Albert, Jan
    Karolinska University Hospital, Stockholm, Sweden ; Karolinska Institutet, Stockholm, Sweden.
    de la Torre, Theresa Z. G.
    Uppsala University, Uppsala, Sweden.
    Strømme, Maria
    Uppsala University, Uppsala, Sweden.
    Johansson, Christer
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Sensitive magnetic biodetection using magnetic multi-core nanoparticles and RCA coils2017Ingår i: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 427, 14-18 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We use functionalized iron oxide magnetic multi-core particles of 100 nm in size (hydrodynamic particle diameter) and AC susceptometry (ACS) methods to measure the binding reactions between the magnetic nanoparticles (MNPs) and bio-analyte products produced from DNA segments using the rolling circle amplification (RCA) method. We use sensitive induction detection techniques in order to measure the ACS response. The DNA is amplified via RCA to generate RCA coils with a specific size that is dependent on the amplification time. After about 75 min of amplification we obtain an average RCA coil diameter of about 1 µm. We determine a theoretical limit of detection (LOD) in the range of 11 attomole (corresponding to an analyte concentration of 55 fM for a sample volume of 200 µL) from the ACS dynamic response after the MNPs have bound to the RCA coils and the measured ACS readout noise. We also discuss further possible improvements of the LOD.

  • 6.
    Ahrentorp, Fredrik
    et al.
    RISE., Swedish ICT, Acreo, Sensor Systems.
    Blomgrten, Jakob
    Coil comprising a winding comprising a multi-axial cable2011Patent (Övrig (populärvetenskap, debatt, mm))
  • 7. Aklint, T
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Hanson, M
    Olsson, E
    Gustavsson, F
    Wäppling, R
    A Rosen, A
    Magnetic Properties of deposited iron clusters produced in a high yield laser vaporization source1998Ingår i: Applied Organometallic Chemistry, Vol. 12, 479- s.Artikel i tidskrift (Refereegranskat)
  • 8. Albert, J
    et al.
    Fokine, M
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Grating formation in pure silica-core fibers2002Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 27, nr 10, 809-811 s.Artikel i tidskrift (Refereegranskat)
  • 9.
    Alcusa-Saez, E. P.
    et al.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    Diez, A.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    Rivera-Perez, E.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Norin, Lars
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Andres, M. V.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    All-fiber acousto-optic tunable filter in polyimide coated optical fibers2017Ingår i: International Conference on Transparent Optical Networks, 2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    We present the experimental demonstration of in-fiber acousto-optic coupling in a polyimide-coated optical fiber. Although the presence of the polyimide coating increases is significantly the attenuation of the acoustic wave, we show that acousto-optic interaction can still be produced with reasonable efficiency. The effect of the polyimide coating on the acousto-optic interaction process is analyzed in detailed. Theoretical and experimental results are in good agreement. To our knowledge, this is the first experimental demonstration of acousto-optic coupling in optical fibers with robust protective coating.

  • 10.
    Alcusa-Sáez, E. P.
    et al.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    Díez, Antonio
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Burjassot, Spain.
    Rivera-Pérez, E.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    Margulis, W.
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Norin, L.
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Andrés, M. V.
    Departamento de Física Aplicada y Electromagnetismo-ICMUV, Spain.
    Acousto-optic interaction in polyimide coated optical fibers with flexural waves2017Ingår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 25, nr 15, 17167-17173 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Acousto-optic coupling in polyimide-coated single-mode optical fibers using flexural elastic waves is demonstrated. The effect of the polyimide coating on the acousto-optic interaction process is analyzed in detailed. Theoretical and experimental results are in good agreement. Although the elastic attenuation is significant, we show that acousto-optic coupling can be produced with a reasonably good efficiency. To our knowledge, it is the first experimental demonstration of acousto-optic coupling in optical fibers with robust protective coating.

  • 11. Almeida, A F L
    et al.
    Fechine, P B A
    Sasaki, J M
    Ayala, A P
    Goes, J C
    Pontes, D L
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Optical electrical properties of barium titanate hydroxyapatite composite screen-printed thick films2004Ingår i: Solid State Sciences, Vol. 6, nr 3, 267-78 s.Artikel i tidskrift (Refereegranskat)
  • 12. Amin, G
    et al.
    Sandberg, M O
    RISE., Swedish ICT, Acreo.
     Zainelabdin, A
     Zaman, S
     Nur, O
    Willander, M
    Scale-up synthesis of ZnO nanorods for printing inexpensive ZnO/polymer white light-emitting diode2012Ingår i: Journal of Materials Science_x000D_, Vol. 47, 4726-31 s.Artikel i tidskrift (Refereegranskat)
  • 13.
    Andersson Ersman, P
    et al.
    RISE., Swedish ICT, Acreo.
    Kawahara, J
    Berggren, M
    Printed passive matrix addressed electrochromic displays2013Ingår i: Organic electronics, ISSN 1566-1199, E-ISSN 1878-5530, Vol. 14, nr 12, 3371-3378 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Flexible displays are attracting considerable attention as a visual interface for applications such as in electronic papers paper electronics. Passive or active matrix addressing of individual pixels require display elements that include proper signal addressability, which is typically provided by non-linear device characteristics or by incorporating transistors into each pixel. Including such additional devices into each pixel element make manufacturing of flexible displays using adequate printing techniques very hard complicated. Here, we report all-printed passive matrix addressed electrochromic displays (PMAD), built up from a very robust three-layer architecture, which can be manufactured using standard printing tools. Poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) (PEDOT:PSS) serves as the conducting electrochromic pixel electrodes carbon paste is used as the pixel counter electrodes. These electrodes sandwich self-assembled layers of a polyelectrolyte that are confined to desired pixel areas via surface energy patterning. The particular choice of materials results in a desired current vs. voltage threshold that enables addressability in electronic cross-point matrices. The resulting PMAD operates at less than 3 V, exhibits high colour switch contrast without cross-talk promises for high-volume low-cost production of flexible displays using reel-to-reel printing tools on paper or plastic foils._x000D_

  • 14.
    Andersson Ersman, P
    et al.
    RISE., Swedish ICT, Acreo.
    Nilsson, D
    Kawahara, J
    Gustafsson, G
    RISE., Swedish ICT, Acreo.
    Berggren, M
    Fast-switching all-printed organic electrochemical transistors2013Ingår i: Organic electronics, ISSN 1566-1199, E-ISSN 1878-5530, Vol. 14, nr 5, 1276-80 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Symmetric fast (ˆ¼5 ms) on-to-off off-to-on drain current switching characteristics have been obtained in screen printed organic electrochemical transistors (OECTs) including PEDOT:PSS (poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid)) as the active transistor channel material. Improvement of the drain current switching characteristics is made possible by including a carbon conductor layer on top of PEDOT:PSS at the drain electrode that is in direct contact with both the channel the electrolyte of the OECT. This carbon conductor layer suppresses the effects from a reduction front that is generated in these PEDOT:PSS-based OECTs. In the off-state of these devices this reduction front slowly migrate laterally into the PEDOT:PSS drain electrode, which make off-to-on switching slow. The OECT including carbon electrodes was manufactured using only standard printing process steps may pave the way for fully integrated organic electronic systems that operate at low voltages for applications such as logic circuits, sensors active matrix addressed displays._x000D_

  • 15.
    Andersson, J Y
    et al.
    RISE., Swedish ICT, Viktoria.
    Höglund, L
    Noharet, B
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Ericsson, P
    Wissmar, S
    Asplund, C
    Malm, H
    Martijn, H
    Hammar, M
    Gustafsson, O
    Hellström, S
    Radamson, H
    Holtz, PO
    Quantum structure based infrared detector research development within 874750’s centre of excellence IMAGIC2010Ingår i: Infrared physics & technology, ISSN 1350-4495, E-ISSN 1879-0275, Vol. 53, 227-30 s.Artikel i tidskrift (Refereegranskat)
  • 16. Andersson, P
    et al.
    Forchheimer, R
    Tehrani, P
    Berggren, M
    RISE., Swedish ICT, Acreo.
    Printable All-Organic Electrochromic Active-Matrix Displays2007Ingår i: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 17, nr 16, 3074- s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    All-organic active matrix addressed displays based on electrochemical smart pixels made on flexible substrates are reported. Each individual smart pixel device combines an electrochemical transistor with an electrochromic display cell, thus resulting in a low-voltage operating robust display technology. Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(styrenesulfonate) (PSS) served as the active material in the electrochemical smart pixels, as well as the conducting lines, of the monolithically integrated active-matrix display. Different active-matrix display addressing schemes have been investigated a matrix display fill factor of 65€‰% was reached. This is achieved by combining a three-terminal electrochemical transistor with an electrochromic display cell architecture, in which an additional layer of PEDOT:PSS was placed on top of the display cell counter electrode. In addition, we have evaluated different kinds of electrochromic polymer materials aiming at reaching a high color switch contrast. This work has been carried out in the light of achieving a robust display technology that is easily manufactured using a standard label printing press, which forced us to use the fewest different materials as well as avoiding exotic complex device architectures. Together, this yields a manufacturing process of only five discrete patterning steps, which in turn promise for that the active matrix addressed displays can be manufactured on paper or plastic substrates in a roll-to-roll production procedure._x000D_

  • 17. Andersson, P
    et al.
    Nilsson, D
    Svensson, P-O
    Chen, M
    Malmström, A
    RISE., Swedish ICT, Acreo.
    Remonen, T
    Kugler T, Berggren
    Active Matrix Displays Based on All-Organic Electrochemical Smart Pixels Printed on Paper2002Ingår i: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 14, nr 20, 1460- s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An organic electronic paper display technology is presented. The electrochromic display cell together with the addressing electrochemical transistor form simple smart pixels that are included in matrix displays, which are achieved on coated cellulose-based paper using printing techniques. The ion-electronic technology presented offers an opportunity to extend existing use of ordinary paper._x000D_

  • 18. Araujo, L. F.
    et al.
    Etcheverry, S.
    da Costa, G. K. B.
    Pereira, J. M. B.
    Camara, A. R.
    de Matos, C. J. S.
    Margulis, Walter
    RISE., Swedish ICT, Acreo.
    Fontana, J.
    Carvalho, I. C. S.
    Photonics with special optical fibers and nanoparticles2016Ingår i: Optics InfoBase Conference Papers, 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    Optical properties of nanorods in the presence of external electric field when confined to a special optical fiber was investigated, showing an increase of the longitudinal absorption peak in the presence of the field.

  • 19.
    Arndt, Holger
    et al.
    Spring Techno GmbH & Co, Germany..
    Burkard, Stefan
    Spring Techno GmbH & Co, Germany..
    Talavera, Guillermo
    Universitat Autònoma de Barcelona, Spain.
    Garcia, Joan
    Universitat Autònoma de Barcelona, Spain.
    Castells, David
    Universitat Autònoma de Barcelona, Spain.
    Codina, Marc
    Universitat Autònoma de Barcelona, Spain.
    Hausdorff, Jeffrey
    Mirelman, Anat
    Tel Aviv Sourasky Medical Center, Israel.
    Harte, Richard
    National University of Ireland, Ireland.
    Casey, Monica
    National University of Ireland, Ireland.
    Glynn, Liam
    National University of Ireland, Ireland.
    Di Rosa, Mirko
    Istituto Nazionale Riposo e Cura per Anziani, Italy.
    Rossi, Lorena
    Istituto Nazionale Riposo e Cura per Anziani, Italy.
    Stara, Vera
    Istituto Nazionale Riposo e Cura per Anziani, Italy.
    Rösevall, John
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Rusu, Cristina
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Carenas, Carlos
    EURECAT, Spain.
    Breuil, Fanny
    EURECAT, Spain.
    Reixach, Elisenda
    EURECAT, Spain.
    Carrabina, Jordi
    Universitat Autònoma de Barcelona, Spain.
    Real-time constant monitoring of fall risk index by means of fully-wireless insoles2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    Constant monitoring of gait in real life conditions is considered the best way to assess Fall Risk Index (FRI) since most falls happen out of the ideal conditions in which clinicians are currently analyzing the patient's behavior. This paper presents the WIISEL platform and results obtained through the use of the first full-wireless insole devices that can measure almost all gait related data directly on the feet (not in the upper part of the body as most existing wearable solutions). The platform consists of a complete tool-chain: insoles, smartphone & app, server & analysis tool, FRI estimation and user access. Results are obtained by combining parameters in a personalized way to build individual fall risk index assessed by experts with the help of data analytics. New FRI has been compared with standards that validate the quality of its prediction in a statistically significant way. That qualitatively relevant information is being provided to the platform users, being either end-users/patients, relatives or caregivers and the related clinicians to ideally assess about their long term evolution. © 2017 The authors and IOS Press.

  • 20. Aspholm-Hurtig, M
    et al.
    Dailide, G
    Lahmann, M
    Kalia, A
    Ilver, D
    RISE., Swedish ICT, Acreo.
    Roche, N
    Vikström, S
    Sjöström, R
    Linden, S
    Bckström, A
    Lundberg, C
    Arnqvist, A
    Mahdavi, J
    Nilsson, UJ
    Velapatino, B
    Gilman, RH
    Gerhard, M
    Alarcon, T
    Lopez-Brea, M
    Nakazawa, T
    Fox, JG
    Correa, P
    Functional adaptation of BabA, the H. pylori ABO blood group antigen binding adhesin.2004Ingår i: Science., Vol. 305, nr 5683, 519-22 s.Artikel i tidskrift (Refereegranskat)
  • 21. Aurelius, A
    et al.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Djupsjöbacka, A
    RISE., Swedish ICT, Acreo.
    Jacobsen, G
    RISE., Swedish ICT, Acreo.
    New Method for Measuring Probablility Density Function of Modulated Optical Signals, demonstrated on EDFA SOA2006Ingår i: Journal of optical communications, ISSN 0173-4911, E-ISSN 2191-6322, Vol. 27, nr 3, 168-71 s.Artikel i tidskrift (Refereegranskat)
  • 22.
    Aurelius, A
    et al.
    RISE., Swedish ICT, Acreo, Broadband Technology.
    Lagerstedt, C
    RISE., Swedish ICT, Acreo, Broadband Technology.
    IP traffic measurements in access networks2009Ingår i: Internetdagarna 2009 (Presentation), 2009Konferensbidrag (Övrigt vetenskapligt)
  • 23.
    Bakowski, M
    et al.
    RISE., Swedish ICT, Acreo.
    Lim, J-K
    RISE., Swedish ICT, Acreo.
    Kaplan, W
    Merits of Buried Grid Technology for SiC JBS Diodes2012Ingår i: ECS Transactions, ISSN 1938-5862, E-ISSN 1938-6737, Vol. 50, nr 3, 415-424 s.Artikel i tidskrift (Refereegranskat)
  • 24.
    Bakowski, M
    et al.
    RISE., Swedish ICT, Acreo.
    Lim, J-K
    RISE., Swedish ICT, Acreo.
    Kaplan, W
    Schöner, A
    Merits of buried grid technology for advanced SiC device concepts2011Ingår i: ECS Transactions, ISSN 1938-5862, E-ISSN 1938-6737, Vol. 41, nr 8, 155-62 s.Artikel i tidskrift (Refereegranskat)
  • 25.
    Bakowski, M
    et al.
    RISE, Swedish ICT, Acreo.
    Lim, J.-K
    RISE, Swedish ICT, Acreo.
    Kaplan, W.
    RISE, Swedish ICT, Acreo.
    Schöner, A.
    RISE, Swedish ICT, Acreo.
    Merits of buried grid technology for advanced SiC device concepts2011Ingår i: ECS Transactions, ISSN 1938-5862, E-ISSN 1938-6737, Vol. 41, nr 8, 155-162 s.Artikel i tidskrift (Refereegranskat)
  • 26.
    Bakowski, M
    et al.
    RISE., Swedish ICT, Acreo.
    Schöner, A
    Petermann, I
    RISE., Swedish ICT, Acreo.
    Savage, S
    Silicon carbide APD with improved detection sensitivity stability2010Ingår i: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 645-648, 1089- s.Artikel i tidskrift (Refereegranskat)
  • 27.
    Bakowski, Mietek
    et al.
    RISE., Swedish ICT, Acreo.
    Lim, Jang-Kwon
    RISE., Swedish ICT, Acreo.
    Kaplan, Wlodek
    RISE., Swedish ICT, Acreo.
    Merits of Buried Grid Technology for SiC JBS Diodes2012Ingår i: GALLIUM NITRIDE AND SILICON CARBIDE POWER TECHNOLOGIES 2, 2012, 415-424 s.Konferensbidrag (Refereegranskat)
    Abstract [en]

    The SiC Schottky barrier diodes for 200 degrees C to 250 degrees C operation have been developed using buried grid (BG) technology. 2A and 10A, 1700V BG JBS diodes have been fabricated and evaluated. Manufactured 10A, 1700V BG JBS diodes have leakage current at least three orders of magnitude lower compared to the typical data sheet values of the commercial devices. The leakage current at 250 degrees C is of the same order of magnitude as that of the commercial devices at 175 degrees C. The two alternative technologies for realization of BG, implantation and epitaxy, have been compared by simulations. The epitaxial grid is shown to have superior potential for best trade-off between on-state voltage and leakage current.

  • 28.
    Bakowski, Mietek
    et al.
    RISE., Swedish ICT, Acreo.
    LIm, Jang-Kwon
    RISE., Swedish ICT, Acreo.
    Kaplan, Wlodek
    RISE., Swedish ICT, Acreo.
    Schöner, Adolf
    RISE., Swedish ICT, Acreo.
    Merits of Buried Grid Technology for Advanced SiC Device Concepts2011Ingår i: ECS Transactions, ISSN 1938-5862, E-ISSN 1938-6737, Vol. 41, nr 8, 155-162 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Some chosen examples of the use of buried grid technology for advanced SiC devices are discussed. First example is development of normally-off and normally-on JFETs. Second is the development of Schottky diodes for high temperature operation. Other examples are efficient junction termination and avalanche UV detector. Experimental results are used in support of simulations.

  • 29. Barkowsky, M
    et al.
    Masala, E
    Van Wallendael, G
    Brunnström, K
    RISE., Swedish ICT, Acreo.
    Staelens, N
    Le Callet, P
    Objective Video Quality Assessment - Towards large scale video database enhanced model development2015Ingår i: IEICE transactions on communications, ISSN 0916-8516, E-ISSN 1745-1345, Vol. e98.b, nr 1, p2-11 s.Artikel i tidskrift (Refereegranskat)
  • 30. Barkowsky, M
    et al.
    Sedano, I
    Brunnström, K
    RISE., Swedish ICT, Acreo.
    Leszczuk, M
    Staelens, N
    Hybrid video quality prediction: Re-viewing video quality meausurement for widening application scope2014Ingår i: Multimedia tools and applications, ISSN 1380-7501, E-ISSN 1573-7721, Vol. 74, nr 2, 323- s.Artikel i tidskrift (Refereegranskat)
  • 31.
    Beland, M-C
    et al.
    RISE., Swedish ICT, Acreo.
    Bennett, J M
    Effect of local microroughness on the gloss uniformity of printed paper surfaces2000Ingår i: Appl. Opt., Vol. 39, 2719- s.Artikel i tidskrift (Refereegranskat)
  • 32.
    Bender, P.
    et al.
    University of Cantabria, Spain.
    Balceris, C.
    University of Cantabria, Spain.
    Ludwig, F.
    TU Braunschweig, Germany.
    Posth, O.
    Physikalisch-Technische Bundesanstalt, Germany.
    Bogart, L. K.
    University College London, UK.
    Szczerba, W.
    Bundesanstalt für Materialforschung und -prüfung, Germany ; AGH University of Science and Technology, Poland .
    Castro, A.
    SOLVE Research and Consultancy AB, Sweden.
    Nilsson, L.
    SOLVE Research and Consultancy AB, Sweden ; Lund University, Sweden.
    Costo, R.
    Instituto de Ciencia de Materiales de Madrid, Spain.
    Gavilán, H.
    Instituto de Ciencia de Materiales de Madrid, Spain.
    González-Alonso, D.
    University of Cantabria, Spain.
    Pedro, I. D.
    University of Cantabria, Spain.
    Barquin, L. F.
    University of Cantabria, Spain.
    Johansson, C.
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Distribution functions of magnetic nanoparticles determined by a numerical inversion method2017Ingår i: New Journal of Physics, ISSN 1367-2630, E-ISSN 1367-2630, Vol. 19, nr 7, 073012Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In the present study, we applied a regularized inversion method to extract the particle size, magnetic moment and relaxation-time distribution of magnetic nanoparticles from small-angle x-ray scattering (SAXS), DC magnetization (DCM) and AC susceptibility (ACS) measurements. For the measurements the particles were colloidally dispersed in water. At first approximation the particles could be assumed to be spherically shaped and homogeneously magnetized single-domain particles. As model functions for the inversion, we used the particle form factor of a sphere (SAXS), the Langevin function (DCM) and the Debye model (ACS). The extracted distributions exhibited features/peaks that could be distinctly attributed to the individually dispersed and non-interacting nanoparticles. Further analysis of these peaks enabled, in combination with a prior characterization of the particle ensemble by electron microscopy and dynamic light scattering, a detailed structural and magnetic characterization of the particles. Additionally, all three extracted distributions featured peaks, which indicated deviations of the scattering (SAXS), magnetization (DCM) or relaxation (ACS) behavior from the one expected for individually dispersed, homogeneously magnetized nanoparticles. These deviations could be mainly attributed to partial agglomeration (SAXS, DCM, ACS), uncorrelated surface spins (DCM) and/or intra-well relaxation processes (ACS). The main advantage of the numerical inversion method is that no ad hoc assumptions regarding the line shape of the extracted distribution functions are required, which enabled the detection of these contributions. We highlighted this by comparing the results with the results obtained by standard model fits, where the functional form of the distributions was a priori assumed to be log-normal shaped.

  • 33.
    Bender, P.
    et al.
    University of Cantabria, Santander, Spain .
    Bogart, L. K.
    University College London, London, United Kingdom .
    Posth, O.
    Physikalisch-Technische Bundesanstalt, Berlin, Germany .
    Szczerba, W.
    Bundesanstalt für Materialforschung Und-prüfung (BAM), Berlin, Germany ; AGH University of Science and Technology, Krakow, Poland .
    Rogers, S. E.
    ISIS-STFC Neutron Scattering Facility, Harwell Science and Innovation Campus, Didcot, United Kingdom .
    Castro, A.
    SOLVE Research and Consultancy AB, Lund, Sweden .
    Nilsson, L.
    SOLVE Research and Consultancy AB, Lund, Sweden ; Lund University, Lund, Sweden .
    Zeng, L. J.
    Chalmers University of Technology, Göteborg, Sweden .
    Sugunan, A.
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi, material och ytor.
    Sommertune, J.
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi, material och ytor.
    Fornara, A.
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi, material och ytor.
    González-Alonso, D.
    University of Cantabria, Santander, Spain .
    Fernández Barquín, L.
    University of Cantabria, Santander, Spain .
    Johansson, C.
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method2017Ingår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, 45990Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by an indirect Fourier transform of static light scattering, small angle X-ray scattering and small angle neutron scattering data of the colloidal dispersion. The extracted pair distance distribution functions clearly indicated that the cores were mostly accumulated in the outer surface layers of the poly(styrene) spheres. To investigate the magnetic properties, the isothermal magnetisation curves of the multi-core particles (immobilised and dispersed in water) were analysed. The study stands out by applying the same numerical approach to extract the apparent moment distributions of the particles as for the indirect Fourier transform. It could be shown that the main peak of the apparent moment distributions correlated to the expected intrinsic moment distribution of the cores. Additional peaks were observed which signaled deviations of the isothermal magnetisation behavior from the non-interacting case, indicating weak dipolar interactions.

  • 34.
    Berggren, M
    et al.
    RISE., Swedish ICT, Acreo.
    Nilsson, D
    Robinson, ND
    Organic materials for printed electronics2007Ingår i: Nature Materials, Vol. 6, p3-5 s.Artikel i tidskrift (Refereegranskat)
  • 35. Berggren, M.
    et al.
    Simon, D. T.
    Nilsson, David
    RISE., Swedish ICT, Acreo.
    Dyreklev, Peter
    RISE., Swedish ICT, Acreo.
    Norberg, Petronella
    RISE., Swedish ICT, Acreo.
    Nordlinder, Staffan
    RISE., Swedish ICT, Acreo.
    Andersson Ersman, Peter
    RISE., Swedish ICT, Acreo.
    Gustafsson, Göran
    RISE., Swedish ICT, Acreo.
    Wikner, J. J.
    Hederén, J.
    Hentzell, Hans
    RISE., Swedish ICT, Acreo.
    Browsing the Real World using Organic Electronics, Si-Chips, and a Human Touch2016Ingår i: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 28, nr 10, 1911-1916 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Two different e-labels were developed to explore the feasibility and to identify scientifi c and engineering challenges of the Real-World-Web platform. First was a printed biosensor e-label, comprising Si-chips with an array of different printegrated devices, and second, an e-label to explore the feasibility of transferring data, through the human body, between a mobile device and different distributed e-labels, adhered onto the body or onto dedicated devices and surfaces of one's ambience. The silicon chips utilized in e-labels, include analogue and digital circuitry to receive and handle sensory input, to perform signal processing, and to transmit information to antennas and displays. When used, the e-label is turned on, and a sample is then added onto the sensor area. The display provides simple instructions and updated information to the user. All data handling, electrical probing, and analysis of the sensor is performed by the Si-chips, and the sensing data is finally shown in the printed display. The second e-label exemplifies an ID-tag for body area networks (BAN) communication applications, which, in part, is manufactured and integrated in the same way as the first e-label, but with another choice of Si-chips and capacitive antennas.

  • 36. Bergstedt, L
    et al.
    Persson, K
    RISE., Swedish ICT, Acreo.
    Printed Glass for Anodic Bonding - A Packaging Concept for MEMS System On a Chip2002Ingår i: Advancing Microelectronics, Vol. 29, nr 1Artikel i tidskrift (Refereegranskat)
  • 37. Bernstein, GM
    et al.
    Lee, Y
    Gavler, A
    RISE., Swedish ICT, Acreo.
    Martensson, J
    RISE., Swedish ICT, Acreo.
    Modeling WDM wavelength switching systems for use in GMPLS automated path computation2009Ingår i: Journal of Optical Communications and Networking, ISSN 1943-0620, E-ISSN 1943-0639, Vol. 1, nr 1, 187-95 s.Artikel i tidskrift (Refereegranskat)
  • 38. Bicanic, D
    et al.
    Swarts, J
    Luterotti, S
    Helander, P
    RISE., Swedish ICT, Acreo.
    Fogliano, V
    Anese, M
    Optothermistor as a Breakthrough in the Quantification of Lycopene Content of Thermally Processed Tomato-Based Foods: Verification versus Absorption Spectrophotometry High-Performance Liquid Chromatography2005Ingår i: Journal of Agricultural Food Chemistry, Vol. 53, nr 9, 3295-99 s.Artikel i tidskrift (Refereegranskat)
  • 39. Birkholz, M.
    et al.
    Glogener, P.
    Glös, F.
    Basmer, T.
    Theuer, Lorenz
    RISE., Swedish ICT, Acreo.
    Continuously operating biosensor and its integration into a hermetically sealed medical implant2016Ingår i: Micromachines, ISSN 2072-666X, E-ISSN 2072-666X, Vol. 7, nr 10, 183Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An integration concept for an implantable biosensor for the continuous monitoring of blood sugar levels is presented. The system architecture is based on technical modules used in cardiovascular implants in order to minimize legal certification efforts for its perspective usage in medical applications. The sensor chip operates via the principle of affinity viscometry, which is realized by a fully embedded biomedical microelectromechanical systems (BioMEMS) prepared in 0.25-μm complementary metal-oxide-semiconductor (CMOS)/BiCMOS technology. Communication with a base station is established in the 402-405 MHz band used for medical implant communication services (MICS). The implant shall operate within the interstitial tissue, and the hermetical sealing of the electronic system against interaction with the body fluid is established using titanium housing. Only the sensor chip and the antenna are encapsulated in an epoxy header closely connected to the metallic housing. The study demonstrates that biosensor implants for the sensing of low-molecular-weight metabolites in the interstitial may successfully rely on components already established in cardiovascular implantology.

  • 40. Bjurshagen, S
    et al.
    Evekull, D
    Koch, R
    RISE., Swedish ICT, Acreo.
    Efficient generation of blue light by frequency doubling of a Nd:YAG laser operating on (4)F(3/2) - (4)I(9/2) transitions2003Ingår i: (Invited) Applied Physics B, Vol. 76, 135-141 s.Artikel i tidskrift (Refereegranskat)
  • 41. Bjurshagen, S
    et al.
    Evekull, D
    Koch, R
    RISE., Swedish ICT, Acreo.
    Generation of blue light at 469 nm by efficient frequency doubling of a diode-pumped Nd:YAG laser2002Ingår i: Electronics Letters, ISSN 0013-5194, E-ISSN 1350-911X, Vol. 38, 324-25 s.Artikel i tidskrift (Refereegranskat)
  • 42. Bjurshagen, S
    et al.
    Koch, R
    RISE., Swedish ICT, Acreo.
    Modeling of energy-transfer upconversion thermal effects in end-pumped quasi-three-level lasers2004Ingår i: Applied Optic, Vol. 43, nr 24, 4753-67 s.Artikel i tidskrift (Refereegranskat)
  • 43. Bjurshagen, S
    et al.
    Koch, R
    RISE., Swedish ICT, Acreo.
    Laurell, F
    Quasi-three-level Nd:YAG laser under diode pumping directly into the emitting level2006Ingår i: Optics Communication, Vol. 261, 109-13 s.Artikel i tidskrift (Refereegranskat)
  • 44. Blaudeck, T
    et al.
     Andersson Ersman, P
    RISE., Swedish ICT, Acreo.
     Sandberg, M
    RISE., Swedish ICT, Acreo.
    Heinz, S
    Laiho, A
     Liu, J
    Engquist, I
    Berggren, M
     Baumann, R R
    Simplified Large-Area Manufacturing of Organic Electrochemical Transistors Combining Printing a Self-Aligning Laser Ablation Step2012Ingår i: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 22, 2939-48 s.Artikel i tidskrift (Refereegranskat)
  • 45.
    Blomgren, J
    et al.
    RISE., Swedish ICT, Acreo.
    Eriksson, T
    Tarte, E
    Winkler, D
    Noise properties of an YBCO SQUID2002Ingår i: Physica, Vol. c358, 191- s.Artikel i tidskrift (Refereegranskat)
  • 46.
    Blomgren, J
    et al.
    RISE., Swedish ICT, Acreo.
    Eriksson, T
    Winkler, D
    An HTS SQUID Picovoltmeter with a Flip-Chip Flux Transformer2001Ingår i: IEEE Trans. Appl. Supercond., Vol. 11, 892- s.Artikel i tidskrift (Refereegranskat)
  • 47.
    Bogren, Sara
    et al.
    RISE., Swedish ICT, Acreo.
    Fornara, Andrea
    Morales, Ludwig
    Johansson, Christer
    RISE., Swedish ICT, Acreo.
    Steinhoff, Uwe
    Fougt Hansen, Mikkel
    Kazakova, Olga
    Classification of Magnetic Nanoparticle Systems€”Synthesis, Standardization Analysis Methods in the NanoMag Project2015Ingår i: International Journal of Molecular Sciences, ISSN 1422-0067, E-ISSN 1422-0067, Vol. 16, 20308-25 s.Artikel i tidskrift (Refereegranskat)
  • 48. Bolin, M
    et al.
    Svennersten, K
    Nilsson, D
    Sawatdee, A
    RISE., Swedish ICT, Acreo.
    Jager, E W H
    Richter-Dahlfors, A
    Berggren, M
    Active Control of Epithelial Cell-Density Gradients Grown Along the Channel of an Organic Electrochemical Transistor2009Ingår i: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 21, 4379-82 s.Artikel i tidskrift (Refereegranskat)
  • 49. Brewka, L
    et al.
    Gavler, A
    RISE., Swedish ICT, Acreo.
    Wessing, H
    Dittman, L
    Including 10-Gigabit-capable Passive Optical Network under End-to-End Generalized Multi-Protocol Label Switching Provisioned Quality of Service2012Ingår i: Fiber and integrated optics (Print), ISSN 0146-8030, E-ISSN 1096-4681, Vol. 31, nr 2Artikel i tidskrift (Refereegranskat)
  • 50.
    Brooke, Robert
    et al.
    Linköping University, Sweden.
    Mitraka, Evangelie
    Linköping University, Sweden.
    Sardar, Samim
    Linköping University, Sweden.
    Sandberg, Mats
    RISE - Research Institutes of Sweden, IKT, Acreo. Linköping University, Sweden.
    Sawatdee, Anurak
    RISE - Research Institutes of Sweden, IKT, Acreo.
    Berggren, Magnus
    RISE - Research Institutes of Sweden, IKT, Acreo. Linköping University, Sweden.
    Crispin, Xavier
    Linköping University, Sweden.
    Jonsson, Magnus P.
    Linköping University, Sweden.
    Infrared electrochromic conducting polymer devices2017Ingår i: Journal of Materials Chemistry C, ISSN 2050-7526, E-ISSN 2050-7534, Vol. 5, nr 23, 5824-5830 s.Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is well known for its electrochromic properties in the visible region. Less focus has been devoted to the infrared (IR) wavelength range, although tunable IR properties could enable a wide range of novel applications. As an example, modern day vehicles have thermal cameras to identify pedestrians and animals in total darkness, but road and speed signs cannot be easily visualized by these imaging systems. IR electrochromism could enable a new generation of dynamic road signs that are compatible with thermal imaging, while simultaneously providing contrast also in the visible region. Here, we present the first metal-free flexible IR electrochromic devices, based on PEDOT:Tosylate as both the electrochromic material and electrodes. Lateral electrochromic devices enabled a detailed investigation of the IR electrochromism of thin PEDOT:Tosylate films, revealing large changes in their thermal signature, with effective temperature changes up to 10 °C between the oxidized (1.5 V) and reduced (-1.5 V) states of the polymer. Larger scale (7 × 7 cm) vertical electrochromic devices demonstrate practical suitability and showed effective temperature changes of approximately 7 °C, with good optical memory and fast switching (1.9 s from the oxidized state to the reduced state and 3.3 s for the reversed switching). The results are highly encouraging for using PEDOT:Tosylate for IR electrochromic applications.

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