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  • 901.
    Zhang, Lu
    et al.
    Shanghai Jiao Tong University, China ; KTH Royal Institute of Technology, Sweden.
    Pang, Xiodan
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Ozolins, Oskars
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Udalcovs, Aleksejs
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Schatz, Richard
    KTH Royal Institute of Technology, Sweden.
    Westergren, Urban
    KTH Royal Institute of Technology, Sweden.
    Jacobsen, Gunnar
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Popov, Sergei
    Wosinska, Lena
    KTH Royal Institute of Technology, Sweden.
    Xiao, Shilin
    Shanghai Jiao Tong University, China.
    Hu, Weisheng
    Shanghai Jiao Tong University, China.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden.
    Digital mobile fronthaul employing differential pulse code modulation with suppressed quantization noise2017Ingår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 25, nr 25, s. 31921-31936Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A differential pulse code modulation (DPCM) based digital mobile fronthaul architecture is proposed and experimentally demonstrated. By using a linear predictor in the DPCM encoding process, the quantization noise can be effectively suppressed and a prediction gain of 7~8 dB can be obtained. Experimental validation is carried out with a 20 km 15-Gbaud/λ 4-level pulse amplitude modulation (PAM4) intensity modulation and direct detection system. The results verify the feasibility of supporting 163, 122, 98, 81 20-MHz 4, 16, 64, 256 QAM based antenna-carrier (AxC) containers with only 3, 4, 5, 6 quantization bits at a sampling rate of 30.72MSa/s in LTE-A environment. Further increasing the number of quantization bits to 8 and 9, 1024 quadrature amplitude modulation (1024 QAM) and 4096 QAM transmission can be realized with error vector magnitude (EVM) lower than 1% and 0.5%, respectively. The supported number of AxCs in the proposed DPCM-based fronthaul is increased and the EVM is greatly reduced compared to the common public radio interface (CPRI) based fronthaul that uses pulse code modulation. Besides, the DPCM-based fronthaul is also experimentally demonstrated to support universal filtered multicarrier signal that is one candidate waveform for the 5th generation mobile systems.

  • 902.
    Zhang, Lu
    et al.
    KTH Royal Institute of Technology, Sweden.
    Udalcovs, Aleksejs
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Lin, Rui
    KTH Royal Institute of Technology, Sweden.
    Ozolins, Oskars
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Pang, Xiaodan
    KTH Royal Institute of Technology, Sweden.
    Gan, Lin
    Huazhong University of Science and Technology, China.
    Schatz, Richard
    KTH Royal Institute of Technology, Sweden.
    Djupsjöbacka, Anders
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Mårtensson, Jonas
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Tang, Ming
    Huazhong University of Science and Technology, China.
    Fu, Songnian
    Huazhong University of Science and Technology, China.
    Liu, Deming
    Huazhong University of Science and Technology, China.
    Tong, Weijun
    YOFC Yangtze Optical Fiber and Cable, China.
    Povov, Sergei
    KTH Royal Institute of Technology, Sweden.
    Jacobsen, Gunnar
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Hu, Weisheng
    Shanghai Jiao Tong University, China.
    Xiao, Shilin
    Shanghai Jiao Tong University, China.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden.
    Digital Radio-Over-Multicore-Fiber System with Self-Homodyne Coherent Detection and Entropy Coding for Mobile Fronthaul2018Konferensbidrag (Refereegranskat)
    Abstract [en]

    We experimentally demonstrate a 28-Gbaud 16-QAM self-homodyne digital radio-over-33.6km-7-core-fiber system with entropy coding for mobile fronthaul, achieving error-free carrier aggregation of 330 100-MHz 4096-QAM 5G-new-radio channels and 921 100-MHz QPSK 5G-new-radio channels with CPRI-equivalent data rate up to 3.73-Tbit/s.

  • 903.
    Zhang, Lu
    et al.
    Shanghai Jiaotong University, China; KTH Royal Institute of Technology, Sweden.
    Udalcovs, Aleksejs
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Lin, Rui
    KTH Royal Institute of Technology, Sweden.
    Ozolins, Oskars
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Pang, Xiaodan
    KTH Royal Institute of Technology, Sweden; Infinera Metro HW R&D, Sweden.
    Gan, Lin
    Huazhong University of Science and Technology, China.
    Schatz, Richard
    KTH Royal Institute of Technology, Sweden.
    Tang, Min
    Huazhong University of Science and Technology, China.
    Fu, Songnian
    Huazhong University of Science and Technology, China.
    Liu, Deming
    Huazhong University of Science and Technology, China.
    Tong, Weijun
    Yangtze Optical Fibre and Cable Joint Stock Ltd Co, China.
    Popov, Sergei
    KTH Royal Institute of Technology, Sweden.
    Jacobsen, Gunnar
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Hu, Weisheng
    Shanghai Jiaotong University, China.
    Xiao, Shilin
    Shanghai Jiaotong University, China.
    Chen, Jiajia
    KTH Royal Institute of Technology, Sweden; Chalmers University of Technology, Sweden.
    Toward terabit digital radio over fiber systems: Architecture and key technologies2019Ingår i: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 57, nr 4, s. 131-137, artikel-id 8703480Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To support massive deployment of broadband radio applications, such as 5G and high-definition videos for terrestrial televisions, large system capacity and high spectrum efficiency are highly demanded in radio over fiber (RoF) systems. In this article, we propose a terabit digital RoF system capable of providing high-speed transmission, where multicore fiber (MCF) is introduced for the access segment between the central unit and remote unit. Two key technologies that greatly enhance system capacity and spectrum efficiency, namely MCF enabled self-homodyne detection and compressed quantization, are demonstrated.

  • 904.
    Zhang, Y.
    et al.
    RISE., Swedish ICT, Acreo.
    Belov, I.
    Bakowski, M.
    RISE., Swedish ICT, Acreo.
    Lim, J. -K
    RISE., Swedish ICT, Acreo.
    Leisner, P.
    RISE., SP – Sveriges Tekniska Forskningsinstitut.
    Nee, H. -P
    Investigation of a finned baseplate material and thickness variation for thermal performance of a SiC power module2014Ingår i: 2014 15th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems, EuroSimE 2014, 2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    A simplified transient computational fluid dynamics model of an automotive three-phase double-side liquid cooled silicon carbide power inverter, including pin-fin baseplates, has been developed and qualified for parametric studies. Effective heat transfer coefficients have been extracted from the detailed pin-fin baseplate model for two coolant volume flow rates 2 l/min and 6 l/min, at the coolant temperature 105 °C. The inverter model includes temperature dependent heat losses of SiC transistors and diodes, calculated for two driving cycles. Baseplate materials such as copper, aluminum-silicon carbide metal matrix composite, aluminium alloy 6061 as well as virtual materials have been evaluated in the parametric studies. Thermal conductivity, specific heat and density have been varied as well as thickness of the finned baseplates (1 to 3 mm). A trade-off between temperature of SiC chips and baseplate weight has been investigated by means of Pareto optimization. The main results of the parametric studies include a weak dependence (1 to 3 °C) of the chip temperature on baseplate thickness. Furthermore, switching e.g. between copper and AlSiC results in 5 to 8 °C increase of the chip temperature, at 65 to 70 % baseplate weight reduction.

  • 905.
    Zhang, Y.
    et al.
    RISE - Research Institutes of Sweden, ICT, Acreo. Jönköping University, Sweden; KTH Royal Institute of Technology, Sweden.
    Below, I.
    Jönköping University, Sweden.
    Bakowski, M.
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Lim, J-K.
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Leisner, Peter
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Elektronik.
    Nee, H-P.
    KTH Royal Institute of Technology, Sweden.
    Investigation of a finned baseplate material and thickness variation for thermal performance of a SiC power module2014Ingår i: 15th international conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems, IEEE , 2014, , s. 1-8artikel-id 6813817Konferensbidrag (Refereegranskat)
    Abstract [en]

    A simplified transient computational fluid dynamics model of an automotive three-phase double-side liquid cooled silicon carbide power inverter, including pin-fin baseplates, has been developed and qualified for parametric studies. Effective heat transfer coefficients have been extracted from the detailed pin-fin baseplate model for two coolant volume flow rates 2 l/min and 6 l/min, at the coolant temperature 105 °C. The inverter model includes temperature dependent heat losses of SiC transistors and diodes, calculated for two driving cycles. Baseplate materials such as copper, aluminum-silicon carbide metal matrix composite, aluminium alloy 6061 as well as virtual materials have been evaluated in the parametric studies. Thermal conductivity, specific heat and density have been varied as well as thickness of the finned baseplates (1 to 3 mm). A trade-off between temperature of SiC chips and baseplate weight has been investigated by means of Pareto optimization. The main results of the parametric studies include a weak dependence (1 to 3 °C) of the chip temperature on baseplate thickness. Furthermore, switching e.g. between copper and AlSiC results in 5 to 8 °C increase of the chip temperature, at 65 to 70 % baseplate weight reduction.

  • 906.
    Zhang, Yafan
    et al.
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Hammam, Tag
    RISE - Research Institutes of Sweden, Swerea, Swerea KIMAB AB.
    Belov, Ilja
    Jönköping University, Sweden.
    Sjögren, Torsten
    RISE - Research Institutes of Sweden, Säkerhet och transport, Safety.
    Bakowski, Mietek
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Nee, Hans Peter
    KTH Royal Institute of Technology, Sweden.
    Thermomechanical Analysis and Characterization of a Press-Pack Structure for SiC Power Module Packaging Applications2017Ingår i: IEEE Transactions on Components, Packaging, and Manufacturing Technology, ISSN 2156-3950, E-ISSN 2156-3985, Vol. 7, nr 7, s. 1089-1100Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper presents an experimental methodology for the characterization of thermomechanical displacement and friction properties in a free-floating press-pack structure, and evaluation of the tensile stress on the semiconductor die through simulation of different mechanical and thermal loading conditions. The press-pack structure consists of a single silver-metallized (1 μm) silicon carbide die (400 μm) in contact with rhodium-coated (0.4 μm) molybdenum square plates. The thermomechanical displacements in the press-pack structure have been obtained using the digital image correlation technique, and the mean random error has been $± $0.1 μm, which is approximately 10 ppm of the measured length (10.5 mm). The developed experimental method has led to an analytical estimation of friction coefficients on the interfaces' silicon carbide-molybdenum and molybdenum-copper. The results demonstrate that the thin silver layer behaves as a solid film lubricant. A 2-D finite-element model representing the experimental setup has been implemented. The difference in displacement between measurement and simulation is less than 8%. Furthermore, the coinfluence of the design parameters on the thermomechanical performance of the stacked structure has been analyzed through simulations. Finally, design guidelines to reduce the tensile stress on the silicon carbide die have been proposed regarding free-floating press-pack power electronics packaging.

  • 907.
    Zhang, Yafan
    et al.
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Nee, Hans Peter
    KTH Royal Institute of Technology, Sweden.
    Hammam, Tag
    RISE - Research Institutes of Sweden (2017-2019), Material och produktion, KIMAB.
    Belov, Ilja
    Jönköping University, Sweden.
    Ranstad, Per
    GE Power Sweden AB, Sweden.
    Bakowski, Mietek
    RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.
    Multiphysics Characterization of a Novel SiC Power Module2019Ingår i: IEEE Transactions on Components, Packaging, and Manufacturing Technology, ISSN 2156-3950, E-ISSN 2156-3985, Vol. 9, nr 3, s. 489-501Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper proposes a novel power module concept specially designed for highly reliable silicon carbide power devices for medium- and high-power applications. The concept consists of two clamped structures: 1) a press-pack power stage accommodating silicon carbide power switch dies, and 2) perpendicularly clamped press-pack heatsinks, in which, the heatsinks are in contact with electrically insulated case plates of the power stage. The concept enables bondless package with symmetric double-sided cooling of the dies and allows for an order of magnitude higher clamping force on the heatsinks than what can be applied on the dies. The concept has been evaluated in a first demonstrator (half-bridge configuration with ten paralleled silicon carbide dies in each position). Experimental methodologies, setups, and procedures have been presented. The commutation loop inductance is approximately 9 nH at 78 kHz. The junction-to-case thermal resistance is approximately 0.028 K/W. Furthermore, a simplified 3D finite element thermomechanical model representing the center unit of the demonstrator, has been established for the purpose of future optimization. The accuracy of the simulated temperatures is within 4 % compared to the measurements. Finally, a 3D thermomechanical stress distribution map has been obtained for the simplified model of the demonstrator.

  • 908.
    Zhang, Yafan
    et al.
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Neumaier, Klaus
    ON Semiconductor Gmhb, Germany; Fairchild Semiconductor Gmhb, Germany.
    Zschieschang, Olaf
    ON Semiconductor Gmhb, Germany; Fairchild Semiconductor Gmhb, Germany.
    Weis, Gerald
    AT & S Austria Technologie & Systemtechnik, Austria.
    Schmid, Gerhard
    AT & S Austria Technologie & Systemtechnik, Austria.
    Bakowski, Mietek
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Nee, Hans Peter
    KTH Royal Institute of Technology, Sweden.
    Simulation-driven development of a novel SiC embedded power module design concept2017Ingår i: 2017 18th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems, EuroSimE 2017, 2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    Silicon carbide embedded power modules enable a compact and cost competitive packaging solution for high-switching frequency and high-temperature operation applications. Power module packaging technologies span several engineering domains. At the early design stage, simulation-driven development is necessary to shorten the design period and reduce the design cost. This paper presents a novel design concept of a three-phase embedded power module (1200 V, 20 A, 55 mm × 36 mm × 0.808 mm) including silicon carbide metal-oxide-semiconductor field-effect transistor and antiparallel diode dies. Based on the E/CAD design data different layer built-up designs have been tested against thermal, mechanical, and electrical behavior. The obtained simulation data then have been evaluated against a commercial available power module (Motion Smart Power Module SMP33) which utilizes over mold direct bonded copper substrates with soldered semiconductor dies and bond wire contacts. Compared to the conventional module, the loop conductive interconnection parasitic inductance and resistance of the design concept (Vdc+ to Vdc-) reduces approximately by 88 % and 72 %, respectively. The average junction to case thermal resistance has been improved by approximately more than 10 % even though the total package size reduces by approximately 88 %. Furthermore, the contours of deformation and stresses have been investigated for the design concept in the thermomechanical simulation.

  • 909.
    Zhao, Wei
    et al.
    RISE., Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Zhao, Yichen
    KTH Royal Institute of Technology, Sweden.
    Karlsson, Mikael
    RISE., Swedish ICT, Acreo.
    Wang, Qin
    RISE., Swedish ICT, Acreo.
    Toprak, Muhammet S.
    KTH Royal Institute of Technology, Sweden.
    Evaluation of Zinc Oxide Nano-Microtetrapods for Biomolecule2015Ingår i: Micro+Nano Materials, Devices, and Systems / [ed] Benjamin J. Eggleton, Stefano Palomba, 2015, Vol. 9668, artikel-id 966833Konferensbidrag (Refereegranskat)
    Abstract [en]

    Zinc oxide tetrapods (ZnO-Ts) were synthesized by flame transport synthesis using Zn microparticles. This work herein reports a systematical study on the structural, optical and electrochemical properties of the ZnO-Ts. The morphology of the ZnO-Ts was confirmed by scanning electron microscopy (SEM) as joint structures of four nano-microstructured legs, of which the diameter of each leg is 0.7-2.2 μm in average from the tip to the stem. The ZnO-Ts were dispersed in glucose solution to study the luminescence as well as photocatalytic activity in a mimicked biological environment. The photoluminescence (PL) intensity in the ultraviolet (UV) region quenches with linear dependence to increased glucose concentration up to 4 mM. The ZnO-Ts were also attached with glucose oxidase (GOx) and over coated with a thin film of Nafion to form active layers for electrochemical glucose sensing. The attachment of GOx and coating of Nafion were confirmed by infrared spectroscopy (FT-IR). Furthermore, the current response of the active layers based on ZnO-Ts was investigated by cyclic voltammetry (CV) in various glucose concentrations. Stable current response of glucose was detected with linear dependence to glucose concentration up to 12 mM, which confirms the potential of ZnO-Ts for biomolecule sensing applications.

  • 910. Zhao, Y
    et al.
    Sugunan, A
    Rihtnesberg, D B
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Toprak, M S
    Muhammed, M
    Size-tuneable synthesis of photoconducting poly-(3-hexylthiophene) nanofibres nanocomposites2012Ingår i: Phys. Status Solidi, Vol. c9, nr 7, s. 1546-50Artikel i tidskrift (Refereegranskat)
  • 911.
    Zhao, Yichen
    et al.
    KTH Royal Institute of Technology, Sweden.
    Sugunan, Abhilash
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
    Wang, Qin
    RISE., Swedish ICT, Acreo.
    Yang, Xuran
    KTH Royal Institute of Technology, Sweden.
    Rihtnesberg, David B.
    RISE., Swedish ICT, Acreo.
    Toprak, Muhammet S.
    KTH Royal Institute of Technology, Sweden.
    Direct Determination of Spatial Localization of Carriers in CdSe-CdS Quantum Dots2015Ingår i: Journal of Nanomaterials, ISSN 1687-4110, E-ISSN 1687-4129, Vol. 2015, artikel-id 321354Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Colloidal quantum dots (QDs) have gained significant attention due to their tunable band gap, simple solution processability, ease of scale-up, and low cost. By carefully choosing the materials, core-shell heterostructure QDs (HQDs) can be further synthesized with a controlled spatial spread of wave functions of the excited electrons and holes for various applications. Many investigations have been done to understand the exciton dynamics by optical characterizations. However, these spectroscopic data demonstrate that the spatial separation of the excitons cannot distinguish the distribution of excited electrons and holes. In this work, we report a simple and direct method to determine the localized holes and delocalized electrons in HQDs. The quasi-type-II CdSe-CdS core-shell QDs were synthesized via a thermolysis method. Poly(3-hexylthiophene) (P3HT) nanofiber and ZnO nanorods were selected as hole and electron conductor materials, respectively, and were combined with HQDs to form two different nanocomposites. Photoelectrical properties were evaluated under different environments via a quick and facile characterization method, confirming that the electrons in the HQDs were freely accessible at the surface of the nanocrystal, while the holes were confined within the CdSe core.

  • 912.
    Zhybak, Mykhailo T.
    et al.
    National Academy of Sciences of Ukraine, Ukraine; Linköping University, Sweden.
    Vagin, Mikhail Yu.
    Linköping University, Sweden.
    Beni, Valerio
    RISE., Swedish ICT, Acreo.
    Liu, Xianjie
    Linköping University, Sweden.
    Dempsey, Eithne
    Institute of Technology Tallaght, Ireland.
    Turner, Anthony P. F.
    Linköping University, Sweden.
    Korpan, Yaroslav I.
    National Academy of Sciences of Ukraine, Ukraine.
    Direct detection of ammonium ion by means of oxygen electrocatalysis at a copper-polyaniline composite on a screen-printed electrode2016Ingår i: Microchimica Acta, ISSN 0026-3672, E-ISSN 1436-5073, Vol. 183, nr 6, s. 1981-1987Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We describe a composite material for use in electrochemical oxygen reduction. A screen-printed electrode (SPE) was consecutively modified with electrodeposited copper, a Nafion membrane and electropolymerized polyaniline (PANi) to give an electrocatalytic composite of type PANi/Nafion/Cu2O/SPE that displays good electrical conductivity at neutral pH values. It is found that the presence of ammonia causes complex formation with Cu(I), and this causes electroreduction of oxygen to result in an increased cathodic current. The finding was applied to the quantification of ammonium ions in the 1 to 1000 μM concentration range by amperometry at −0.45 V (vs. Ag/AgCl). This Faradaic phenomenon offers the advantage of direct voltammetric detection, one of the lowest known limits of detection (0.5 μM), and high sensitivity (250 mA∙M−1∙cm−2). It was applied to the determination of ammonium ion in human serum where it compared well with the photometric routine approach for clinical analysis using glutamate dehydrogenase. [Figure not available: see fulltext.]

  • 913. Zirkl, M
    et al.
    Sawatdee, A
    RISE., Swedish ICT, Acreo.
    Helbig, U
    Krause, M
    Scheipl, G
    Kraker, E
    Andersson Ersman, Peter
    RISE., Swedish ICT, Acreo.
    Nilsson, D
    Platt, D
    RISE., Swedish ICT, Acreo.
    Bodö, P
    Bauer, S
    Domann, G
    Stadlober, B
    An All-Printed Ferroelectric Active Matrix Sensor Network Based on Only Five Functional Materials Forming a Touchless Control Interface2011Ingår i: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 23, s. 2069-74Artikel i tidskrift (Refereegranskat)
  • 914. Åhman, F
    et al.
    Tromborg, B
    Mörk, J
    Aurelius, A
    Djupsjöbacka, A
    RISE., Swedish ICT, Acreo.
    Berntson, A
    RISE., Swedish ICT, Acreo.
    Measurements Simulation of nonlinear Noise in an SOA2005Ingår i: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 17, nr 1, s. 16-18Artikel i tidskrift (Refereegranskat)
  • 915. Åisjöen, F
    et al.
    Schneiderman, JF
    Astalan, AP
    Kalabukhov, A
    Johansson, Christer
    RISE., Swedish ICT, Acreo.
    Winkler, D
    A new approach for bioassays based on frequency€“ time-domain measurements of magnetic nanoparticles2010Ingår i: Biosensors & bioelectronics, ISSN 0956-5663, E-ISSN 1873-4235, Vol. 25, s. 1008-13Artikel i tidskrift (Refereegranskat)
  • 916. Åisjöen, F
    et al.
    Schneiderman, JF
    Astalan, AP
    Kalabukhov, A
    Johansson, Christer
    RISE., Swedish ICT, Acreo.
    Winkler, D
    The need for stable, mono-dispersed, biofunctional magnetic nanoparticles for one-step immunoassays2010Ingår i: Journal of Physics, Vol. 200Artikel i tidskrift (Refereegranskat)
  • 917. Åisjöen, F
    et al.
    Schneiderman, JF
    Zaborowska, M
    Shunmugavel, K
    Magnelind, P
    Kalabukhov, A
    Petersson, K
    Prieto Astalan, A
    Johansson, Christer
    RISE., Swedish ICT, Acreo.
    Winkler, D
    Fast sensitive measurement of specific antigen-antibody binding reactions with magnetic nanoparticles HTS SQUID2009Ingår i: IEEE Transactions on Applied Superconductivity., Vol. 19, nr 3, s. 848-52Artikel i tidskrift (Refereegranskat)
  • 918.
    Åklint, Thorbjörn
    et al.
    Chalmers University of Technology, Sweden.
    Johansson, Christer
    RISE., Swedish ICT, Acreo. Chalmers University of Technology, Sweden.
    Hanson, Maj
    Chalmers University of Technology, Sweden.
    Olsson, Eva
    Chalmers University of Technology, Sweden.
    Gustavsson, Fredrik
    Uppsala University, Sweden.
    Wäppling, Roger
    Uppsala University, Sweden.
    Rosen, Arne
    Chalmers University of Technology, Sweden.
    Magnetic Properties of deposited iron clusters produced in a high yield laser vaporization source1998Ingår i: Applied Organometallic Chemistry, Vol. 12, s. 479-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Clusters of iron produced in a laser vaporization source have been characterized with time-of-flight spectra and deposited on different substrates for production of films of varying thickness. The magnetic properties of these films with thicknesses of 60 and 120 nm were investigated using an alternating gradient magnetometer. The films exhibit mono-domain behavior from a broad size distribution which has been confirmed by transmission electron microscopy. Films were also investigated by Mössbauer spectroscopy, which showed fast relaxation in the particles at room temperature.

  • 919. Åstlund, L
    et al.
    Wang, Q
    RISE., Swedish ICT, Acreo.
    Esteve, R
    Almqvist, S
    Rihtnesberg, D
    Reshanov, S
    Zhang, A Z
    Lim, J K
    RISE., Swedish ICT, Acreo.
    Bakowski, M
    RISE., Swedish ICT, Acreo.
    Schöner, A
    Kaplan, W
    4H- 6H-SiC UV photodetectors2012Ingår i: Phys. Status Solid, Vol. c9, nr 7, s. 1680-2Artikel i tidskrift (Refereegranskat)
  • 920.
    Öhlén, Peter
    et al.
    Ericsson Research, Sweden.
    Skubic, Björn
    Ericsson Research, Sweden.
    Rostami, Ahmad
    Ericsson Research, Sweden.
    Fiorani, Matteo
    RISE., Swedish ICT, Acreo, Broadband Technology. KTH Royal Institute of Technology, Sweden.
    Monti, Paolo
    RISE., Swedish ICT, Acreo, Broadband Technology. KTH Royal Institute of Technology, Sweden.
    Ghebretensaé, Zere
    Ericsson Research, Sweden.
    Mårtensson, Jonas
    RISE., Swedish ICT, Acreo.
    Wang, Kun
    RISE., Swedish ICT, Acreo.
    Wosinska, Lena
    RISE., Swedish ICT, Acreo, Broadband Technology. KTH Royal Institute of Technology, Sweden.
    Data Plane and Control Architectures for 5G Transport Networks2016Ingår i: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 34, nr 6, s. 1501-1508Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Next generation 5G mobile system will support the vision of connecting all devices that benefit from a connection, and support a wide range of services. Consequently, 5G transport networks need to provide the required capacity, latency, and flexibility in order to integrate the different technology domains of radio, transport, and cloud. This paper outlines the main challenges, which the 5G transport networks are facing and discusses in more detail data plane, control architectures, and the tradeoff between different network abstraction models.

  • 921. Österberg, FW
    et al.
    Dalslet, BT
    Snakenborg, D
    Johansson, Christer
    RISE., Swedish ICT, Acreo.
    Hansen, MF
    Chip-Based Measurements of Brownian Relaxation of Magnetic Beads Using a Planar Hall Effect Magnetic Field Sensor2010Ingår i: AIP Conference Proceedings, Vol. 1311, s. 176-182Artikel i tidskrift (Refereegranskat)
  • 922.
    Özgür, Erdogan
    et al.
    Hacettepe University, Turkey ; Linköping University, Sweden.
    Parlak, Onur
    Linköping University, Sweden.
    Beni, Valerio
    RISE - Research Institutes of Sweden, ICT, Acreo. Linköping University, Sweden.
    Turner, Anthony P. F.
    Linköping University, Sweden.
    Uzun, Lokman
    Hacettepe University, Turkey ; Linköping University, Sweden.
    Bioinspired design of a polymer-based biohybrid sensor interface2017Ingår i: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 251, s. 674-682Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The key step in the construction of efficient and selective analytical separations or sensors is the design of the recognition interface. Biomimicry of the recognition features typically found in biological molecules, using amino acids, peptides and nucleic acids, provides plausible opportunities to integrate biological molecules or their active sites into a synthetic polymeric backbone. Given the basic role of functional amino acids in biorecognition, we focused on the synthesis of polymerizable amino acid derivatives and their incorporation into a polymer-based biohybrid interface to construct generic bioinspired analytical tools. We also utilized polyvinyl alcohol (PVA) as a sacrificial polymer to adjust the porosity of these biohybrid interfaces. The surface morphologies of the interfaces on gold electrodes were characterized by using scanning electron (SEM) and atomic force (AFM) microscopies. The electrochemical behavior of the polymeric films was systematically investigated using differential pulse voltammetry (DPV) to demonstrate the high affinity of the biohybrid interfaces for Cu(II) ions. The presence of macropores also significantly improved the recognition performance of the interfaces while enhancing interactions between the target [Cu(II) ions] and the functional groups. As a final step, we showed the applicability of the proposed analytical platform to create a Cu(II) ion-mediated supramolecular self-assembly on a quartz crystal microbalance (QCM) electrode surface in real time.

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