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Asia-Pacific Conference on Communications

作者： Syamsuri Yaakob Norhakimah Md Samsuri Nazif Farid romli Mohamad Amiza rasmi Muhammad Zamzuri Abdul Kadir Sevia Mahdaliza Idrus Shu-Hao Fan Advanced Physical Technology (APT) Telekom Research & Development (TM R&D) Cyberjaya Selangor Malaysia Facuhy of Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta Georgia USA

The dual sideband optical carrier suppression (dSB-OCS) technique is characterised for its performance in order to be used as a carrier for 1.25Gbps OOK signal in the 40GHz radio over fibre (rOF) system. A dual electrode Mach-Zehnder modulator (dE-MZM) and the minimum transmission bias (MiTB) technique are employed to build the system. The results show that, a 40GHz carrier is successfully generated with the amplitude up to -29dBm and SNr of 35dB. Finally, an error free 40GHz rOF system is constructed with almost no penalty between the back to back and 20km fibre for a BEr of 10 -9 .

关键词： Optical fibers radio frequency Optical mixing Optical modulation Signal to noise ratio High speed optical techniques

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Optical Properties and Enhanced Photothermal Conversion Efficiency of SiO2/A-dlc Selective Absorber Films for A Solar Energy Collector Fabricated by Unbalance Sputter

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Physics Procedia 2012年 32卷 206-213页

作者： Fu-der Lai Wei-Yang Li C.Y. Huang Jui-Ming Hua Kai-Cheih Chang Ting-Pin Cho Yuen-Hsun Tsai Institute of Electro-Optical Engineering National Kaohsiung First University of Science and Technology Kaohsiung 811 Taiwan Department of Materials Engineering Tatung University Taipei 104 Taiwan Micro/Meso Mechanical Manufacturing R&D Department Metal Industries Research and Development Centre Kaohsiung 811 Taiwan

Solar energy could become the most attractive alternative energy source. In this study we test an attractive new candidate material for solar energy collectors. It can be found that the higher the gas pressure is, the higher the sp2/sp3 area ratio, the greater the sputtering rate and the greater the optical absorption. The photothermal conversion efficiency of a SiO2 coating on the amorphous diamond-like carbon (a-dLC) selective absorber films deposited on the Cr/mirror like Al substrate is 93.2% as the film thickness of a SiO2 coating is 105 nm. The coatings also increase the protective properties for a longer service life. This makes the SiO2 coated a-dLC film a promising new candidate material for solar selective absorber films. The SiO2/a-dLC selective absorber films also were deposited on the Al extrusion substrates.

关键词： selective absorber film solar energy collector amorphous carbon silicon oxide photothermal conversion efficiency

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Position dependence of irreversibility line on thin plate Gd-Ba-Cu-O bulk superconductor

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Physics Procedia 2012年 27卷 168-171页

作者： Tomoyuki Naito daiki Furuta Takahiro Arayashiki Hiroyuki Fujishiro Yousuke Yanagi Yoshitaka Itoh Department of Materials Science and Technology Faculty of Engineering Iwate University Morioka 020-8551 Japan Soft-Path Engineering Research Center (SPERC) Faculty of Engineering Iwate University Morioka 020-8551 Japan IMRA Material R&D Co. Ltd. Kariya 448-0032 Japan

We measured the profiles of the trapped field, B T, on a thin Gd-Ba-Cu-O superconducting bulk plate with 45 mm in diameter and 2 mm in thickness magnetized by the pulsed field, where Gd-Ba-Cu-O consists of a superconducting matrix phase of GdBa2Cu3O7−δ and a nonsuperconducting secondary phase of Gd2BaCuO5. The vortices were mainly trapped at the periphery in the growth sector regions (GSrs) for low applied fields, and around the growth sector boundaries (GSBs) and under the seed crystal (SC) position for high applied fields. The irreversibility line, which was determined from the resistivity measurements, of the sample cut from the GSr was rather lower than those of the samples cut from the GSBs and the SC position. This result revealed the weak vortex pinning strength in the GSrs and was consistent with the B T profiles by PFM. The obtained results suggest that the resistivity can also probe the distribution of the vortex pinning strength.

关键词： Gd-Ba-Cu-O bulk pulsed field magnetization trapped field irreversibility line resistivity

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design of traditional and a novel space-efficient antenna-coupling elements for lower LTE/GSM mobile phones

Design of traditional and a novel space-efficient antenna-co...

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Antennas and Propagation Conference, LAPC, Loughborough

作者： Aykut Cihangir Florence Sonnerat Fabien Ferrero Cyril Luxey romain Pilard Frédéric Gianesello Gilles Jacquemod LEAT-CREMANT-CNRS University Nice-Sophia Antipolis FRANCE STMicroelectronics Technology R&D Silicon Technology Development Crolles FRANCE Universite de Nice Sophia Antipolis Nice Provence-Alpes-Cote d'Azu FR IM2NP-CNRS UMR7334 University Nice-Sophia Antipolis Valbonne FRANCE

The mobile phone antennas exhibit a very low real impedance value especially in lower LTE (698-787MHz) and GSM (824-960MHz) bands, since the antennas are electrically small compared to operating wavelengths at these bands. Obtaining sufficiently low reflection coefficient and high TrP in a considerable bandwidth from such an antenna is very challenging without exciting proper currents on the PCB of the device. So the main trend for mobile handset antennas has moved toward using an electrically-small coupler plate to excite those PCB currents. In this way, the input impedance of the coupling element-chassis combination has a relatively high real part and the quality factor of the system is now much more lower than traditional resonant antennas, enabling higher bandwidth potential with the help of a proper matching network. In this paper, this approach is followed to cover lower LTE (698787MHz) and GSM (824-960MHz) standards with a novel hollow coupling element antenna while keeping space available around and inside the antenna, for additional components or even another higher band antenna (dCS/PCS and UMTS).

关键词： Couplings Antenna measurements Mobile antennas reflector antennas Broadband antennas

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dependence of 4H-SiC Epitaxial Layer Quality on Growth Conditions with Wafer Size Corresponding to 150 mm

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MrS Online Proceedings Library 2012年第1期1433卷 59-64页

作者： Kudou, Chiaki Tamura, Kentaro Aigo, Takashi Ito, Wataru Nishio, Johji Kojima, Kazutoishi Ohno, Toshiyuki R&D Partnership for Future Power Electronics Technology (FUPET) Ibaraki Japan Device Module Development Center Panasonic Corporation Okayama Japan ROHM Co. Ltd Kyoto Japan NIPPON STEEL CORPORATION Chiba-prefecture Japan Toshiba Corporation Kawasaki Japan National Institute of Advanced Industrial Science and Technology (AIST) Ibaraki Japan Hitachi Ltd Tokyo Japan

Homoepitaxial growth on 4H-SiC Si-face substrates with sizes corresponding to 150 mm was carried out. The influence of growth conditions for uniformity and epitaxial defect density was investigated. A 150 mm size was realized by using two 76.2 mm wafers lined up in a radial direction. C/Si ratio is found to be a major parameter for controlling triangular defect density and the generation of step bunching. As a result, the surface morphology without bunched step structure and the triangular defect density with 0.5 cm−2 were obtained by decreasing C/Si ratio to 1.0 on the size corresponding to 150 mm. Under this condition, good carrier concentration and thickness uniformity of σ/mean =15.2 % and 1.7 % could be obtained.

关键词： epitaxy morphology defects

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Cancer diagnostics: A Trachea-Inspired Bifurcated Microfilter Capturing Viable Circulating Tumor Cells via Altered Biophysical Properties as Measured by Atomic Force Microscopy (Small 18/2013)

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Small 2013年第18期9卷

作者： Minseok S. Kim Jinhoon Kim Wonho Lee Sang-Joon Cho Jin-Mi Oh June-Young Lee Sanghyun Baek Yeon Jeong Kim Tae Seok Sim Hun Joo Lee Goo-Eun Jung Seung-Il Kim Jong-Myeon Park Jin Ho Oh Ogan Gurel Soo Suk Lee Jeong-Gun Lee POCT In Vitro Diagnostics Group R&D Solution Group Samsung Advanced Institute of Technology (SAIT) San 14 Nongseo-dong Giheung-gu Yongin-si Gyeonggi-do Korea Research and Development Center Park Systems Korea Interdisciplinary Program of Integrated Biotechnology Sogang University Korea Department of Surgery Yonsei University College of Medicine Korea Department of Chemistry and Center for Bioactive Molecular Hybrids Yonsei University Korea MOT Research Center CTO Office Samsung Advanced Institute of Technology Korea and Samsung Advanced Institute of Health Sciences & Technology SungKyunKwan University Korea

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Macromol. react. Eng. 1/2013

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Macromolecular reaction Engineering 2013年第1期7卷

作者： raul P. Moraes robin A. Hutchinson Timothy F. L. McKenna Department of Chemical Engineering Queen's University Kingston ON Canada K7L3N6 Current Address: Technology Development Corporate R&D 3M Canada Company 1840 Oxford Street East London ON Canada N5V3R6 Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2) – LCPP group CPE Lyon Université de Lyon CNRS UMR 5265 43 Boulevard du 11 Novembre 1918 69616 Villeurbanne Cedex France

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Live Hd video transmission using 40GHz radio over fibre downlink system

Live HD video transmission using 40GHz radio over fibre down...

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International Conference on Photonics (ICP)

作者： S. Yaakob N. M. Samsuri r. Mohamad N. E. Farid I. M. Azmi S. M. Mohd. Hassan N. Khushairi S. A. Eriche Ab rahim A. I. A rahim A. rasmi A. K. Zamzuri S. M. Idrus S.-H. Fan Advanced Physical Technology (APT) Lingkaran Teknokrat Timur Cyberjaya Selangor Malaysia Advanced Physical Technology (APT) Telekom Research & Development (TM R&D) Lingkaran Teknokrat Timur 63000 Cyberjaya Selangor Malaysia Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta Georgia USA

40GHz radio over fibre (rOF) downlink system is constructed to demonstrate Hd video transmission capability using the hybrid optical and wireless system. The dual-sideband optical carrier suppression (dSB-OCS) technique is used in conjunction with the minimum transmission bias (MiTB) to generate optical millimetre wave signal by utilizing a dual electrode Mach-Zehnder modulator (dE-MZM). A baseband high definition (Hd) video signal is modulated into the system via a second MZM. The signal is distributed to a remote antenna unit (rAU) using a 20km optical fibre, then transmitted wirelessly to a customer premise equipment (CPE) located at 5m away. The results show that the Hd video is successfully transmitted over the error free 40GHz rOF downlink system.

关键词： Conferences Photonics

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The Challenges in Implementing Open Innovation in a Global Innovation-driven Corporation

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rESEArCH-technology MANAGEMENT 2012年第4期55卷 32-38页

作者： Nakagaki, Paul Aber, Josh Fetterhoff, Terry 1: is the Head of New Innovation Models in Roche Partnering where he explores alternatives to the conventional innovation models currently used in Roche. He has 23 years of experience in the pharmaceutical industry including business development chemistry manufacturing and controls and R&D strategy. He has a PhD in synthetic organometallic chemistry from the University of Wisconsin. 2: is a director of technology and innovation management working in the Roche Diagnostics Chief Technology Office. He has been with Roche for 13 years engaged in technology strategy assessment and partnering activities. He is a member of the Roche global open innovation work team and is actively working to establish best practices for innovation management at Roche. Josh has a BS in biology from the University of California at Santa Barbara and an MBA from St. Marys College. 3: has 30 years of experience in technology management and currently works at Roche Diagnostics as senior director of technology management and Head of the U.S. Chief Technology Office. In this capacity he oversees the identification and evaluation of emerging technologies relevant to the future of clinical diagnostics and is responsible for global open innovation initiatives within Roche Diagnostics. Terry received a Masters degree in pathology from the University of Western Australia.

Implementing open innovation approaches in a corporation that traditionally has relied on a closed innovation model will always be challenging. This paper describes our attempt to create an open innovation capability at roche in both the pharmaceuticals and diagnostics divisions. In the journey, we have concluded that the navigation of two important hurdles drives any large company's ability to embrace open innovation: creating the eureka moment that so vividly illustrates the value of open innovation activities that senior management no longer questions the need for them and shifting the company mindset to an open innovation culture.

关键词： Open innovation Innovation culture Pharmaceutical/biotech

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Enhancement of the Photoelectric Performance of dye-sensitized Solar Cells by Sol-gel Modified TiO_2 Films

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Journal of materials Science & technology 2011年第8期27卷 764-768页

作者： Yunfeng Zhao Xiaojie Li Qiuping Li Changsheng deng Institute of Nuclear and New Energy Technology Tsinghua University Beijing 100084 China PetroChina Pipeline R&D Center Langfang 065000 China ENN Science Technology Development Co. Ltd. Langfang 065000 China

Modified TiO2 films have been prepared by combining commercial titania powders （degussa P25） with sol-gel made by titanium chloride （Ti-sol）. The result shows that clusters are formed by nanoparticles and large pores can be seen on the surface of the TiO2 films. The short circuit photocurrent density and photoelectric conversion efficiency of the solar cells are obviously enhanced compared with those without modification. The relationship between the photoelectric conversion efficiency and the amount of Ti-sol was investigated. With the addition of 30 wt% Ti-sol, the photoelectric conversion efficiency as high as 9.75% is achieved, increasing by 28.3% compared with the solar cells without modification.

关键词： Sol-gel Titanium dioxide dye-sensitized solar cells

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