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  • 251. Garcia, M. -N
    et al.
    De Simone, F.
    Tavakoli, S.
    Staelens, N.
    Egger, S.
    Brunnstrom, Kjell
    RISE., Swedish ICT, Acreo.
    Raake, A.
    Quality of experience and HTTP adaptive streaming: A review of subjective studies2014Ingår i: 2014 6th International Workshop on Quality of Multimedia Experience, QoMEX 2014, 2014, s. 141-146Konferensbidrag (Refereegranskat)
    Abstract [en]

    HTTP adaptive streaming technology has become widely spread in multimedia services because of its ability to provide adaptation to characteristics of various viewing devices and dynamic network conditions. There are various studies targeting the optimization of adaptation strategy. However, in order to provide an optimal viewing experience to the end-user, it is crucial to get knowledge about the Quality of Experience (QoE) of different adaptation schemes. This paper overviews the state of the art concerning subjective evaluation of adaptive streaming QoE and highlights the challenges and open research questions related to QoE assessment. © 2014 IEEE.

  • 252.
    Garcia-Ruiz, Andres
    et al.
    University of Alcalá, Spain.
    Martins, Hugo
    University of Alcalá, Spain.
    Magalhães, Regina
    University of Alcalá, Spain.
    Pereira, Joao
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Tarasenko, Oleksandr
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Norin, Lars
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Martin-Lopez, Sonia
    University of Alcalá, Spain.
    Gonzalez-Herraez, Miguel
    University of Alcalá, Spain.
    Hermetic all-fiber phase modulators using Joule heating in carbon-coated fibers2018Ingår i: Optics InfoBase Conference Papers, 2018Konferensbidrag (Refereegranskat)
    Abstract [en]

    Certain applications of fiber sensors (e.g. avionics, oil industry) imply extreme operating conditions spurring the development of hermetic all-fiber devices. We present a hermetic all-fiber phase modulator based on Joule heating in a carbon-coated fiber. 

  • 253.
    Garcia-Ruiz, Andres
    et al.
    University of Alcala, Spain.
    Martins, Hugo
    University of Alcala, Spain.
    Magalhães, Regina
    University of Alcala, Spain.
    Pereira, Joao
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Tarasenko, Oleksandr
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Norin, Lars
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Martin-Lopez, Sonia
    University of Alcala, Spain.
    Gonzalez-Herraez, Miguel
    University of Alcala, Spain.
    Hermetic carbon coatings for electro-thermal all-fiber phase modulators2019Ingår i: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Joule effect and thermal response of several carbon coated fibers are modelled and analysed. An electro thermally driven all-fiber phase modulator based on these principles is proposed and a proof of concept of it is characterized. This kind of fibers could be the basis for developing all fiber components aimed to operate in environments where the strength increase and impermeability to hydrogen diffusion guaranteed by the carbon coating is crucial.

  • 254.
    Gavilán, Helena
    et al.
    CSIC Instituto de Ciencia de Materiales de Madrid, Spain.
    Kowalski, Anja
    Micromod Partikeltechnologie GmbH, Germany.
    Heinke, David
    NanoPET Pharma GmbH, Germany.
    Sugunan, Abhilash
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    Sommertune, Jens
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    Varón, Miriam
    DTU Technical University of Denmark, Denmark.
    Bogart, Lara K.
    UCL University College London, UK.
    Posth, Oliver
    PTB Physikalisch-Technische Bundesanstalt, Germany.
    Zeng, Lunjie
    Chalmers University of Technology, Sweden.
    González-Alonso, David
    University of Cantabria, Spain.
    Balceris, Chrsitoph
    TU Braunschweig, Germany.
    Fock, Jeppe
    DTU Technical University of Denmark, Denmark.
    Wetterskog, Erik
    Uppsala University, Sweden.
    Frandsen, Cathrine
    DTU Technical University of Denmark, Denmark.
    Gehrke, Nicole
    NanoPET Pharma GmbH, Germany.
    Grüttner, Cordula
    Micromod Partikeltechnologie GmbH, Germany.
    Fornara, Andrea
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    Ludwig, Frank
    TU Braunschweig, Germany.
    Veintemillas-Verdaguer, Sabino
    CSIC Instituto de Ciencia de Materiales de Madrid, Spain.
    Johansson, Christer
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Morales, M. Puerto
    CSIC Instituto de Ciencia de Materiales de Madrid, Spain.
    Colloidal Flower-Shaped Iron Oxide Nanoparticles: Synthesis Strategies and Coatings2017Ingår i: Particle & particle systems characterization, ISSN 0934-0866, E-ISSN 1521-4117, Vol. 34, nr 7, artikel-id 1700094Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The assembly of magnetic cores into regular structures may notably influence the properties displayed by a magnetic colloid. Here, key synthesis parameters driving the self-assembly process capable of organizing colloidal magnetic cores into highly regular and reproducible multi-core nanoparticles are determined. In addition, a self-consistent picture that explains the collective magnetic properties exhibited by these complex assemblies is achieved through structural, colloidal, and magnetic means. For this purpose, different strategies to obtain flower-shaped iron oxide assemblies in the size range 25–100 nm are examined. The routes are based on the partial oxidation of Fe(OH)2, polyol-mediated synthesis or the reduction of iron acetylacetonate. The nanoparticles are functionalized either with dextran, citric acid, or alternatively embedded in polystyrene and their long-term stability is assessed. The core size is measured, calculated, and modeled using both structural and magnetic means, while the Debye model and multi-core extended model are used to study interparticle interactions. This is the first step toward standardized protocols of synthesis and characterization of flower-shaped nanoparticles.

  • 255.
    Gerosa, Rodrigo M.
    et al.
    Mackenzie Presbyterian University, Brazil.
    Sudirman, Aziza
    RISE., Swedish ICT, Acreo, Fiber Optics. KTH Royal Institute of Technology, Sweden.
    Menezes, Leonardo de S.
    Federal University of Pernambuco, Brazil.
    Margulis, Walter
    RISE., Swedish ICT, Acreo, Fiber Optics. KTH Royal Institute of Technology, Sweden.
    de Matos, Christiano J. S.
    Mackenzie Presbyterian University, Brazil.
    All-fiber high repetition rate dye laser2015Ingår i: Optical Society of America. Journal A: Optics, Image Science, and Vision, ISSN 1084-7529, E-ISSN 1520-8532, Vol. 2, nr 2, s. 186-193Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Optofluidic dye lasers may play a significant role in future laser applications in numerous areas, combining wavelength flexibility with integration and ease of operation. Nevertheless, no all-fiber integrated dye lasers have been demonstrated so far. In this paper, we report on a series of optofluidic all-fiber Rhodamine optical sources operating at a repetition rate as high as 1 kHz. Dye bleaching is avoided by circulating the Rhodamine dye during optical excitation. The laser radiation is extracted via conventional fibers that are spliced to the dye-filled capillary active medium. A tuneable amplified spontaneous emission source, a multimode laser, and a few transverse-mode laser are demonstrated by adjusting the setup. Threshold pump energies as low as similar to 1 mu J and slope efficiencies of up to mu 9% were obtained, indicating the potential for realworld applications in areas such as spectroscopy and biomedicine.

  • 256.
    Gifford, R
    RISE., Swedish ICT, Acreo.
    Continuous Glucose Monitoring: 40 Years, What We've Learned What's Next2013Ingår i: ChemPhysChem, ISSN 1439-4235, E-ISSN 1439-7641, Vol. 14, nr 10, s. 2032-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    After 40 years of research development, today continuous glucose monitoring (CGM) is demonstrating the benefit it provides for millions with diabetes. To provide in vivo accuracy, new permselective membranes mediated systems have been developed to prevent enzyme saturation to minimize interference signals. Early in vivo implanted sensor research clearly showed that the foreign body response was a more difficult issue to overcome. Understanding the biological interface circumventing the inflammatory response continue to drive development of a CGM sensor with accuracy reliability performance suitable in a closed-loop artificial pancreas. Along with biocompatible polymer development, other complimentary algorithm data analysis techniques have improved the performance of commercial systems significantly. For example, the mean average relative difference of Dexcom€™s CGM system improved from 26 to 14€‰% its use-life was extended from 3 to 7 d. Significant gains in usability, including size, flexibility, insertion, calibration, data interface, have been incorporated into new generations of commercial CGM systems. Besides Medtronic, Dexcom, Abbott, other major players are also investing in CGM. Becton Dickinson is conducting clinical trials with an optical galactose glucose binding system. Development of fully implanted sensor systems fulfills the desire for a discreet, reliable CGM system. Research continues to find innovative ways to help make living with diabetes easier more normal, new segments are being pursued (intensive care unit, surgery, behavior modification) in which CGM is being utilized._x000D_

  • 257.
    Gladyshev, Alexey V.
    et al.
    Russian Academy of Sciences, Russia.
    Corbari, Costantino
    University of Southampton, UK.
    Tarasenko, Oleksander
    RISE., Swedish ICT, Acreo.
    Yatsenko, Yu P.
    Russian Academy of Sciences, Russia.
    Semjonov, Sexrgei L.
    Russian Academy of Sciences, Russia.
    Margulis, Walter
    RISE., Swedish ICT, Acreo.
    Kazansky, Peter G.
    University of Southampton, UK.
    Hernandez, Yves
    Multitel, Belgium.
    Second-order nonlinearity in optical fibers: Achievements and perspectives2016Ingår i: Optics InfoBase Conference Papers: Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    Recent progress in thermal poling of silica fibers is reviewed. It is demonstrated that state-of-the-art poled fibers can be used in a number of practical applications. Challenges for further development of poled fiber devices are discussed and possible solutions proposed.

  • 258.
    Golabi, Mohsen
    et al.
    Linköping University, Sweden.
    Kuralay, Filiz
    Ordu University, Turkey.
    Jager, Edwin W. H.
    Linköping University, Sweden.
    Beni, Valerio
    RISE - Research Institutes of Sweden, ICT, Acreo. Linköping University, Sweden.
    Turner, Anthony P. F.
    Linköping University, Sweden.
    Electrochemical bacterial detection using poly(3-aminophenylboronic acid)-based imprinted polymer2017Ingår i: Biosensors & bioelectronics, ISSN 0956-5663, E-ISSN 1873-4235, Vol. 93, s. 87-93Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Biosensors can deliver the rapid bacterial detection that is needed in many fields including food safety, clinical diagnostics, biosafety and biosecurity. Whole-cell imprinted polymers have the potential to be applied as recognition elements in biosensors for selective bacterial detection. In this paper, we report on the use of 3-aminophenylboronic acid (3-APBA) for the electrochemical fabrication of a cell-imprinted polymer (CIP). The use of a monomer bearing a boronic acid group, with its ability to specifically interact with cis-diol, allowed the formation of a polymeric network presenting both morphological and chemical recognition abilities. A particularly beneficial feature of the proposed approach is the reversibility of the cis-diol-boronic group complex, which facilitates easy release of the captured bacterial cells and subsequent regeneration of the CIP. Staphylococcus epidermidis was used as the model target bacteria for the CIP and electrochemical impedance spectroscopy (EIS) was explored for the label-free detection of the target bacteria. The modified electrodes showed a linear response over the range of 103–107 cfu/mL. A selectivity study also showed that the CIP could discriminate its target from non-target bacteria having similar shape. The CIPs had high affinity and specificity for bacterial detection and provided a switchable interface for easy removal of bacterial cell.

  • 259.
    Golabi, Mohsen
    et al.
    Linköping University, Sweden.
    Padiolleau, Laurence
    Linköping University, Sweden; Cranfield University, UK.
    Chen, Xi
    Linköping University, Sweden; University of Dundee, UK.
    Jafari, Mohammad Javad
    Linköping University, Sweden.
    Sheikhzadeh, Elham
    Linköping University, Sweden; Ferdowsi University of Mashhad, Iran.
    Turner, Anthony P. F.
    Linköping University, Sweden.
    Jager, Edwin W. H.
    Linköping University, Sweden.
    Beni, Valerio
    RISE., Swedish ICT, Acreo. Linköping University, Sweden.
    Doping polypyrrole films with 4-N-Pentylphenylboronic acid to enhance affinity towards bacteria and dopamine2016Ingår i: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 11, nr 11, artikel-id e0166548Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Here we demonstrate the use of a functional dopant as a fast and simple way to tune the chemical affinity and selectivity of polypyrrole films. More specifically, a boronic-functionalised dopant, 4-N-Pentylphenylboronic Acid (PBA), was used to provide to polypyrrole films with enhanced affinity towards diols. In order to prove the proposed concept, two model systems were explored: (i) the capture and the electrochemical detection of dopamine and (ii) the adhesion of bacteria onto surfaces. The chemisensor, based on overoxidised polypyrrole boronic doped film, was shown to have the ability to capture and retain dopamine, thus improving its detection; furthermore the chemisensor showed better sensitivity in comparison with overoxidised perchlorate doped films. The adhesion of bacteria, Deinococcus proteolyticus, Escherichia coli, Streptococcus pneumoniae and Klebsiella pneumoniae, onto the boric doped polypyrrole film was also tested. The presence of the boronic group in the polypyrrole film was shown to favour the adhesion of sugar-rich bacterial cells when compared with a control film (Dodecyl benzenesulfonate (DBS) doped film) with similar morphological and physical properties. The presented single step synthesis approach is simple and fast, does not require the development and synthesis of functional monomers, and can be easily expanded to the electrochemical, and possibly chemical, fabrication of novel functional surfaces and interfaces with inherent pre-defined sensing and chemical properties.

  • 260. Gomes, A S L
    et al.
    Carvalho, M T
    Sundheimer, M L
    Bastos-Filho, C J A
    Martins-Filho, J F
    von der Weid, J P
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Low-pump-power, short-fiber copropagating dual-pumped (800 1050nm) thulium-doped fiber amplifier2003Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 28, nr 5, s. 334-36Artikel i tidskrift (Refereegranskat)
  • 261. Gomes, A S L
    et al.
    Carvalho, M T
    Sundheimer, M L
    Bastos-Filho, C J
    Martins-Filho, J F
    Costa e Silva, M B
    von der Weid, J P
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Characterization of efficient dual wavelength (1050 nm+800 nm) pumping scheme for thulium doped fiber amplifiers2003Ingår i: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 25, nr 2, s. 200-202Artikel i tidskrift (Refereegranskat)
  • 262.
    Gouvêa, Paula M. P.
    et al.
    Pontifical Catholic University of Rio de Janeiro, Brazil.
    Rugeland, Patrik
    RISE., Swedish ICT, Acreo.
    Gomes, Marcos S. P.
    Pontifical Catholic University of Rio de Janeiro, Brazil.
    Margulis, Walter
    RISE., Swedish ICT, Acreo.
    Component and setup for insertion of gases in a hollow-core optical fiber sensor2015Ingår i: 24th International Conference on Optical Fibre Sensors / [ed] Hypolito José Kalinowski, José Luís Fabris, Wojtek J. Bock, 2015, Vol. 9634, artikel-id 96343DKonferensbidrag (Refereegranskat)
    Abstract [en]

    An optical fiber component and setup were developed to insert and remove gases from hollow-core optical fibers, allowing gas/light mixing over the length of the fiber for gas sensing applications. Transmitted signals acquired at the output of the fiber contain information regarding absorption occurring inside the fiber, providing a spectroscopic signature of the gas or gases in the fiber. Spectra for 1 atm of acetylene (C2H2) around 1525 nm and 1 atm of carbon dioxide (CO2) around 1432 nm were obtained and compared to HITRAN data, showing good agreement. The setup can also be used to prepare gas cells.

  • 263.
    Granberg, H
    RISE., Swedish ICT, Acreo.
    Spectral Light Absorption and Gloss of Cyan2002Rapport (Övrigt vetenskapligt)
  • 264.
    Granberg, H
    et al.
    RISE., Swedish ICT, Acreo.
    Beland, M-C
    RISE., Swedish ICT, Acreo.
    Modelling the angle-dependent light scattering from sheets of pulp fibre fragments2004Ingår i: Nordic Pulp Paper Res.J., Vol. 19, nr 3, s. 354-Artikel i tidskrift (Refereegranskat)
  • 265.
    Granberg, H
    et al.
    RISE., Swedish ICT, Acreo.
    Edström, P
    Quantification of the intrinsic error of the Kubelka-Munk model caused by strong light absorption2003Ingår i: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 29, s. 386-90Artikel i tidskrift (Refereegranskat)
  • 266.
    Granberg, H
    et al.
    RISE., Swedish ICT, Acreo.
    Rundlöf, M
    Mattsson, L M
    Influence of surface-induced nonuniform reflectance on the diffuse reflectance factor Part 1:model predictions2003Ingår i: J.Pulp Paper Sci., Vol. 29, s. 247-253Artikel i tidskrift (Refereegranskat)
  • 267.
    Granberg, H
    et al.
    RISE., Swedish ICT, Acreo.
    Rundlöf, M
    Mattsson, L M
    Influence of surface-induced nonuniform reflectance on the diffuse reflectance factor. Part 2:Experimental verification on coated substrates2003Ingår i: J.Pulp Paper Sci., Vol. 29, s. 254-59Artikel i tidskrift (Refereegranskat)
  • 268. Grishin, AM
    et al.
    Vanin, EV
    RISE., Swedish ICT, Acreo.
    Tarasenko, OV
    RISE., Swedish ICT, Acreo.
    Khartsev, SI
    Johansson, P
    RISE., Swedish ICT, Acreo.
    Strong broad C-broom-temperature photoluminescence in amorphous Er2O3 film2006Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 89, s. 21114-Artikel i tidskrift (Refereegranskat)
  • 269. Gurell, J
    et al.
    Bengtson, A
    Falkenström, M
    Hansson,  BAM 
    RISE., Swedish ICT, Acreo.
    Laser induced breakdown spectroscopy for fast elemental analysis sorting of metallic scrap pieces using certified reference materials2012Ingår i: Spectrochimica Acta Part B: Atomic Spectroscopy, Vol. 74, s. 46-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A setup utilizing laser induced breakdown spectroscopy (LIBS) for performing elemental analysis in order to classify metallic samples is currently under construction. The setup uses short laser pulses to locally ablate the sample create luminous plasmas. The emitted light is analyzed spectroscopically for instantaneous determination of the elemental composition. A table-top system based on a compact CCD spectrometer has been constructed combined with fast software in order to test the concept of remote, single shot material classification with LIBS. Certified reference materials with known elemental compositions were used in the laboratory tests. We report on successful laboratory tests in which samples were classified using an analysis based on optical emission following a single laser pulse with an operating distance of approximately 1 m. Details regarding field tests of this versatile promising technique are discussed._x000D_

  • 270.
    Gurell, Jonas
    et al.
    RISE - Research Institutes of Sweden, Material och produktion, KIMAB.
    Bengtson, Arne
    RISE - Research Institutes of Sweden, Material och produktion, KIMAB.
    Falkenström, Magnus
    RISE - Research Institutes of Sweden, Material och produktion, KIMAB.
    Hansson, B.A.M.
    RISE., Swedish ICT, Acreo.
    Laser induced breakdown spectroscopy for fast elemental analysis and sorting of metallic scrap pieces using certified reference materials2012Ingår i: Spectrochimica Acta Part B - Atomic Spectroscopy, ISSN 0584-8547, E-ISSN 1873-3565, Vol. 74-75, s. 46-50Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A setup utilizing laser induced breakdown spectroscopy (LIBS) for performing elemental analysis in order to classify metallic samples is currently under construction. The setup uses short laser pulses to locally ablate the sample and create luminous plasmas. The emitted light is analyzed spectroscopically for instantaneous determination of the elemental composition. A table-top system based on a compact CCD spectrometer has been constructed and combined with fast software in order to test the concept of remote, single shot material classification with LIBS. Certified reference materials with known elemental compositions were used in the laboratory tests. We report on successful laboratory tests in which samples were classified using an analysis based on optical emission following a single laser pulse and with an operating distance of approximately 1 m. Details regarding field tests of this versatile and promising technique are discussed. © 2012 Elsevier B.V.

  • 271. Gustafsson, O
    et al.
    Berggren, J
    Ekenberg, U
    Hallen, A
    Hammar, M
    Höglund, L
    Karim, A
    Noharet, B
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Gromov, A
    Almqvist, S
    Zhang, A
    Junique, S
    Andersson, JY
    RISE., Swedish ICT, Viktoria.
    Asplund, C
    Marcks von Wurtemberg, R
    Malm, H
    Martijn, H
    Long-wavelength infrared quantum-dot based interbphotodetectors2010Ingår i: Infrared physics & technology, ISSN 1350-4495, E-ISSN 1879-0275, Vol. 54, nr 3, s. 287-Artikel i tidskrift (Refereegranskat)
  • 272. Gustafsson, O
    et al.
    Karim, A
    Berggren, J
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Reuterskiöld-Hedlund, C
    Ernerheim-Jokumsen, C
    Soldemo, M
    Weissenrieder, J
    Persson, S
    Almqvist, S
    Ekenberg, U
    Noharet, B
    Asplund, C
    Göthelid, M
    Andersson, J Y
    RISE., Swedish ICT, Viktoria.
    Hammar, M
    Photoluminescence photoresponse from InSb/InAs-based quantum dot structures2012Ingår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 20, nr 19, s. 21264-71Artikel i tidskrift (Refereegranskat)
  • 273. Gustafsson, O
    et al.
    Karim, A
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Berggren, J
    Asplund, C
    Andersson, JY
    Hammar, M
    Long-wavelength infrared photoluminescence from InGaSb/InAs quantum dots2013Ingår i: Infrared physics & technology, ISSN 1350-4495, E-ISSN 1879-0275, Vol. 59, s. 89-92Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We study the growth of self-assembled InGaSb/InAs quantum dots (QDs) investigate how gallium can be used to reduce the optical transition energy in the InSb QD system. InGaSb QDs were grown on InAs (0 0 1) substrates by metal-organic vapor-phase epitaxy (MOVPE) the material was characterized by photoluminescence (PL) measurements. A PL peak wavelength is demonstrated beyond 8 Î¼m at 77 K, which is significantly longer than what has been reported for InSb QDs. The results suggest that InGaSb QDs can be grown at a larger size than InSb QDs leading to reduced confinement in the QDs._x000D_

  • 274. Gustafsson, S
    et al.
    Fornara, A
    Petersson, K
    Muhammed, M
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Olsson, E
    Evolution of structural magnetic properties of magnetite nanoparticles for biomedical applications2010Ingår i: Crystal Growth & Design, Vol. 10, nr 5, s. 2278-84Artikel i tidskrift (Refereegranskat)
  • 275. Gustafsson, S
    et al.
    Fornara, A
    Ye, F
    Petersson, K
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Muhammed, M
    Olsson, E
    TEM investigation of magnetite nanoparticles for biomedical applications2008Ingår i: EMC, Vol. 2, s. 209-Artikel i tidskrift (Refereegranskat)
  • 276.
    Gutiérrez, Lucía
    et al.
    CSIC Spanish National Research Council, Spain.
    Costo, Rocio
    CSIC Spanish National Research Council, Spain.
    Grüttner, Cordula
    Micromod Partikeltechnologie GmbH, Germany.
    Westphal, Fritz
    Micromod Partikeltechnologie GmbH, Germany.
    Gehrke, Nicole
    NanoPET Pharma GmbH, Germany.
    Heinke, David
    NanoPET Pharma GmbH, Germany.
    Fornara, Andrea
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Pankhurst, Quentin A.
    University College of London, UK.
    Johansson, Christer
    RISE., Swedish ICT, Acreo.
    Veintemillas-Verdaguer, Sabino
    CSIC Spanish National Research Council, Spain.
    Morales, Maria del Puerto
    CSIC Spanish National Research Council, Spain.
    Synthesis methods to prepare single- and multi-core iron oxide nanoparticles for biomedical applications2015Ingår i: Dalton Transactions, ISSN 1477-9226, E-ISSN 1477-9234, Vol. 44, nr 7, s. 2943-2952Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We review current synthetic routes to magnetic iron oxide nanoparticles for biomedical applications. We classify the different approaches used depending on their ability to generate magnetic particles that are either single-core (containing only one magnetic core, i.e. a single domain nanocrystal) or multi-core (containing several magnetic cores, i.e. single domain nanocrystals). The synthesis of single-core magnetic nanoparticles requires the use of surfactants during the particle generation, and careful control of the particle coating to prevent aggregation. Special attention has to be paid to avoid the presence of any toxic reagents after the synthesis if biomedical applications are intended. Several approaches exist to obtain multi-core particles based on the coating of particle aggregates; nevertheless, the production of multi-core particles with good control of the number of magnetic cores per particle, and of the degree of polydispersity of the core sizes, is still a difficult task. The control of the structure of the particles is of great relevance for biomedical applications as it has a major influence on the magnetic properties of the materials.

  • 277. Gutt, T.
    et al.
    Przewlocki, H. M.
    Piskorski, K.
    Mikhaylov, A.
    RISE., Swedish ICT, Acreo.
    Bakowski, M.
    RISE., Swedish ICT, Acreo.
    PECVD and thermal gate oxides on 3C vs. 4H SiC-Impact on leakage, traps and energy offsets2014Ingår i: ECS Transactions, 2014, nr 7, s. 237-243Konferensbidrag (Refereegranskat)
    Abstract [en]

    Energy-band model offsets, trap density distributions and gate leakage characteristics of MOS capacitors with PECVD and thermal gate oxides on 3C- and 4H-SiC were compared. The difference in trap energy distributions between the polytypes demonstrated in this experiment confirms that the 3C-SiC polytype is less vulnerable to near-interface traps (NIT) which are found in high density in the 4H-SiC. It was also shown that the examined 3C-SiC substrates demonstrated higher leakage currents due to higher dislocation concentration compared with 4H-SiC. Finally, the energy band model of the SiC MOS devices was described quantitatively which could be considered in further development of the devices and processes.

  • 278. Gutt, T
    et al.
    Przewlocki, HM
    Bakowski, M
    RISE., Swedish ICT, Acreo.
    A C-V method of slow-switching interface traps identification in silicon carbide MOS structures2010Ingår i: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 645-648, s. 523-Artikel i tidskrift (Refereegranskat)
  • 279.
    Gyger, Samuel
    et al.
    KTH Royal Institute of Technology, Sweden.
    Zeuner, Katharina D.
    KTH Royal Institute of Technology, Sweden.
    Jöns, Klaus D.
    KTH Royal Institute of Technology, Sweden.
    Elshaari, Ali W.
    KTH Royal Institute of Technology, Sweden.
    Paul, Matthias
    KTH Royal Institute of Technology, Sweden.
    Popov, Sergei
    KTH Royal Institute of Technology, Sweden.
    Hedlund, Carl Reuterskiöld
    KTH Royal Institute of Technology, Sweden.
    Hammar, Mattias
    KTH Royal Institute of Technology, Sweden.
    Ozolins, Oskars
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Zwiller, Val
    KTH Royal Institute of Technology, Sweden.
    Reconfigurable frequency coding of triggered single photons in the telecom C–band2019Ingår i: Optics Express, Vol. 27, nr 10, s. 14400-14406Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this work, we demonstrate reconfigurable frequency manipulation of quantum states of light in the telecom C–band. Triggered single photons are encoded in a superposition state of three channels using sidebands up to 53 GHz created by an off-the-shelf phase modulator. The single photons are emitted by an InAs/GaAs quantum dot grown by metal-organic vapor-phase epitaxy within the transparency window of the backbone fiber optical network. A cross-correlation measurement of the sidebands demonstrates the preservation of the single photon nature; an important prerequisite for future quantum technology applications using the existing telecommunication fiber network.

  • 280.
    Haasl, Sjoerd
    et al.
    RISE., Swedish ICT, Acreo, Sensor Systems.
    Stemme, Göran
    Comprehensive Microsystems, Elsevier, Editors: Yogesh Gianchandani, Osamu Tabata and Hans Zappe, 20072007Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 281.
    Hammarling, Krister
    et al.
    Mid Sweden University, Sweden.
    Engholm, Magnus
    Mid Sweden University, Sweden.
    Andersson, Henrik
    Mid Sweden University, Sweden.
    Sandberg, Mats
    RISE - Research Institutes of Sweden, ICT, Acreo. Mid Sweden University, Sweden.
    Nilsson, Hans Erik
    Mid Sweden University, Sweden.
    Broad-range hydrogel-based pH sensor with capacitive readout manufactured on a flexible substrate2018Ingår i: Chemosensors, ISSN 2227-9040, Vol. 6, nr 3, artikel-id 30Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Environmental monitoring of land, water and air, is an area receiving greater attention because of human health and safety concerns. Monitoring the type of pollution and concentration levels is vital, so that appropriate contingency plans can be determined. To effectively monitor the environment, there is a need for new sensors and sensor systems that suits these type of measurements. However, the diversity of sensors suitable for low, battery powered- and large area sensor systems are limited. We have manufactured and characterized a flexible pH sensor using laser processing and blade coating techniques that is able to measure pH between 2.94 and 11.80. The sensor consists of an interdigital capacitance with a pH sensitive hydrogel coating. Thin sensors can reach 95% of their final value value within 3 min, and are stable after 4 min. Good repeatability was achieved in regard to cycling of the sensor with different pH and multiple measurements from dry state. We have also studied the relation between an interdigital capacitance penetration depth and hydrogels expansion. We believe that our passive sensor is suitable to be used in low power and large area sensor networks.

  • 282.
    Hammarling, Krister
    et al.
    Mid Sweden University, Sweden.
    Sandberg, Mats
    RISE - Research Institutes of Sweden, ICT, Acreo. Mid Sweden University, Sweden.
    Engholm, Magnus
    Mid Sweden University, Sweden.
    Andersson, Henrik
    Mid Sweden University, Sweden.
    Nilsson, Hans-Erik
    Mid Sweden University, Sweden.
    Synthesis, Curing Behavior and Swell Tests of pH-Responsive Coatings from Acryl-Terminated Oligo(beta-Amino Esters)2018Ingår i: Chemosensors, ISSN 2227-9040, Vol. 6, nr 1, artikel-id 10Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The ability of acryl-terminated oligo(beta-amino esters) (AOBAE) to be coated on fibers and printed electronics without solvents and to be cross-linked to a pH-responsive coatings, makes AOBAE-based coatings a potential type of pH-sensor coating. However, there are currently no reports of AOBAEs used as a pH-responsive coating material in sensor applications. Here we present an investigation of the synthesis, curing behavior and swell tests of AOBAEs. AOBAEs were synthesized from reacting an excess of asymmetric diacrylates with piperazine without the use of any solvents. They were then cross-linked to an insoluble network by UV-curing. Nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopy were used to characterize the AOBAEs. NMR was used to clarify the irregular structure of the AOBAE. FTIR was used to monitor the effects of UV-curing dose and air exposure on monomer conversion during curing. An interferometric technique was used to monitor the swelling behavior of the coating in response to pH variations. Swell experiments showed that the AOBAE also responded to pH variations after polymerization. Therefore, AOBAE is an interesting class of material with potential use as a pH responsive coating in optical-and printed electronics pH-sensors applications.

  • 283. Hanson, M
    et al.
    Ivanov, ZG
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Kislinski, Y
    Larsson, P
    A magnetic phase transition studied with high TC SQUIDs1998Ingår i: J. Magn. Magn. Mat., Vol. 177, s. 519-Artikel i tidskrift (Refereegranskat)
  • 284. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Interaction effects in the dynamic response of magnetic liquids1991Ingår i: J. Magn. Magn. Mat., Vol. 101, s. 45-Artikel i tidskrift (Refereegranskat)
  • 285. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Marup, S
    Comment on "Macroscopic resonant tunneling of magnetization in ferretin"1998Ingår i: Phys. Rev. Lett., Vol. 81, nr 3, s. 735-Artikel i tidskrift (Refereegranskat)
  • 286. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Marup, S
    The influence of magnetic anisotropy on the magnetization of small ferromagnetic particles1993Ingår i: Journal of Phys.: Condens. Matter., Vol. 5, s. 725-Artikel i tidskrift (Refereegranskat)
  • 287. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Marup, S
    Zero-field cooled magnetization of amorphous Fe1-xCx particles - field dependence of the maximum1995Ingår i: Journal of Physics: Condensed Matter, Vol. 7, s. 9263-Artikel i tidskrift (Refereegranskat)
  • 288. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Nilsson, B
    Isberg, P
    Wäppling, R
    Magnetic properties of two-dimensionell arrays of epitaxial Fe (001) submicron particles1999Ingår i: J. of Appl. Phys., Vol. 85, nr 5, s. 2799-Artikel i tidskrift (Refereegranskat)
  • 289. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Nilsson, B
    Svedberg, E
    Magnetic properties of epitaxial Ni (001) films sub-micron particles,2001Ingår i: JMMM, Vol. 236, s. 139-50Artikel i tidskrift (Refereegranskat)
  • 290. Hanson, M
    et al.
    Johansson, C
    RISE., Swedish ICT, Acreo.
    Pedersen, MS
    Marup, S
    The influence of particle size interactions on the magnetization susceptibility of nanometre-size particles1995Ingår i: Journal of Physics: Condensed Matter, Vol. 7, s. 9269-Artikel i tidskrift (Refereegranskat)
  • 291. Hansryd, J
    et al.
    Andrekson, P A
    Westlund, M
    Li, J
    RISE., Swedish ICT, Acreo.
    Hedekvist, P O
    Fiber-based optical parametric amplifiers their applications2002Ingår i: IEEE Journal of Selected Topics in Quantum Electronics, Vol. 8Artikel i tidskrift (Refereegranskat)
  • 292. Haunstein, H
    et al.
    Schupke, DA
    Duhovnikov, S
    Lehmann, G
    Stavdas, A
    Gunkel, M
    Martensson, J
    RISE., Swedish ICT, Acreo.
    Lord, A
    Integrated design operation of a transparent optical network: a systematic approach to include physical layer awareness cost function2007Ingår i: IEEE Communications Magazine, Vol. 45, s. 40-47Artikel i tidskrift (Refereegranskat)
  • 293. He, S
    et al.
    Popov, M
    RISE., Swedish ICT, Acreo.
    Qiu, M
    Liao, Z
    Simovski, C
    Explicit formulas for obtaining the radiation characteristics of an antenna based on a three-dimensional metallic photonic bandgap structure2001Ingår i: Microwave Optical Technology Letter, Vol. 29, nr 6, s. 376-Artikel i tidskrift (Refereegranskat)
  • 294. He, S
    et al.
    Popov, M
    RISE., Swedish ICT, Acreo.
    Qiu, M
    Simovski, C
    An explicit method for the analysis of guided waves in a line defect channel in a photonic crystal2000Ingår i: Microwave Optical Technology Letters, Vol. 25, nr 4, s. 236-Artikel i tidskrift (Refereegranskat)
  • 295. He, S
    et al.
    Popov, M
    RISE., Swedish ICT, Acreo.
    Qiu, M
    Simovski, C
    The influence of the dielectric-air interface on the radiation pattern of an antenna in a metallic photonics bandgap structure in a dielectric host medium2000Ingår i: Microwave Optical Technology Letters, Vol. 26, nr 6, s. 367-Artikel i tidskrift (Refereegranskat)
  • 296. He, S
    et al.
    Simovski, C
    Popov, M
    RISE., Swedish ICT, Acreo.
    An explicit efficient method for obtaining the radiation characteristics of wire antennas in metallic photonic bandgap structures2000Ingår i: Microwave Optical Technology Letters, Vol. 26, nr 2, s. 67-Artikel i tidskrift (Refereegranskat)
  • 297.
    Helander, P
    RISE., Swedish ICT, Acreo.
    Measurement of fictive temperature of silica glass optical fibers2004Ingår i: Journal of Materials Science, Vol. 39, nr 11, s. 3799-800Artikel i tidskrift (Refereegranskat)
  • 298.
    Helander, P
    RISE., Swedish ICT, Acreo.
    Practical aspects on measuring refractive index profiles of non-circular fiberoptic preforms2005Ingår i: Measurement Science Technology, Vol. 16, s. 628-32Artikel i tidskrift (Refereegranskat)
  • 299. Hellsing, Maja
    et al.
    Fokine, M
    Claesson, A
    RISE., Swedish ICT, Acreo.
    Nilsson, L-E
    Margulis, W
    RISE., Swedish ICT, Acreo.
    Time-of-flight secondary ion mass spectrometry imaging of dopant diffusion in optical fiber2003Ingår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 203-204, s. 3458-61Artikel i tidskrift (Refereegranskat)
  • 300. Hellström, S
    et al.
    Chen, Z-H
     Fu, Y
    Qiu, M
    Soltanmoradi, R
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Andersson, J Y
    RISE., Swedish ICT, Viktoria.
    Increased photocurrent in quantum dot infrared photodetector by subwavelength hole array in metal thin film2010Ingår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 96, s. 231110-Artikel i tidskrift (Refereegranskat)
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