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13th International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 2013

作者： Nery, Alexandre S. Nedjah, Nadia França, Felipe M.G. Jozwiak, Lech Corporaal, Henk LAM - Computer Architecture and Microeletronics Laboratory Systems Engineering and Computer Science Program COPPE Federal University of Rio de Janeiro Brazil Department of Electronics Engineering and Telecommunications Faculty of Engineering State University of Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology Netherlands

ISBN: (纸本)9783319038582

Application code and processor parallelization, together with instruction set customization, are the most common and effective ways to enhance the performance and efficiency of application-specific processors (ASIPs). Both the effective code parallelization and data/task parallelism exploitation, as well as effective instruction set customization, enable an ASIP to achieve a significant performance improvement using limited extra hardware resources. However, a naive parallelization or instruction set customization may not result in the required performance improvement, leading to a waste of computing and energy resources. Therefore, when performing parallelization or custom instruction selection, complex tradeoffs between processing speed, circuit area and power consumption must be closely observed. In this paper, we propose and discuss an efficient ASIP-based Multi-Processor System-on-a-Chip (MPSoC) design for ray-tracing, exploiting application parallelism and hardware replication-aware instruction set customization. Without hardware sharing among the custom instructions units, the proposed parallel ray-tracer MPSoC design with custom instructions achieves 77% speed up in comparison to a single microprocessor design with the default instruction set. However, with the replication-aware instruction set customization, the speed up increases to 81%. © Springer International Publishing Switzerland 2013.

关键词： Integrated circuit design

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Second-harmonic double-resonance cones in dispersive hyperbolic metamaterials

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Physical Review B 2014年第7期89卷 075123-075123页

作者： Domenico de Ceglia Maria Antonietta Vincenti Salvatore Campione Filippo Capolino Joseph W. Haus Michael Scalora National Research Council–AMRDEC Charles M. Bowden Research Laboratory Redstone Arsenal Alabama 35898 USA Department of Electrical Engineering and Computer Science University of California Irvine California 92697 USA Electro-Optics Program University of Dayton 300 College Park Dayton Ohio 45469 USA Charles M. Bowden Research Laboratory AMRDEC U.S. Army RDECOM Redstone Arsenal Alabama 35898 USA

We study the formation of second-harmonic double-resonance cones in hyperbolic metamaterials. An electric dipole on the surface of the structure induces second-harmonic light to propagate into two distinct volume plasmon-polariton channels: a signal that propagates within its own peculiar resonance cone and a phase-locked signal that is trapped under the pump's resonance cone. Metamaterial dispersion and birefringence induce a large angular divergence between the two volume plasmon polaritons, making these structures suitable for subwavelength second- and higher-harmonic imaging microscopy.

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Topological Polymer Dispersed Liquid Crystals with Bulk Nematic Defect Lines Pinned to Handlebody Surfaces

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Physical Review Letters 2014年第19期112卷 197801-197801页

作者： Michael G. Campbell Mykola Tasinkevych Ivan I. Smalyukh Department of Physics University of Colorado Boulder Colorado 80309 USA Liquid Crystal Materials Research Center University of Colorado Boulder Colorado 80309 USA Max-Planck-Institut für Intelligente Systeme Heisenbergstraße 3 D-70569 Stuttgart Germany Institut für Theoretische Physik IV Universität Stuttgart Pfaffenwaldring 57 D-70569 Stuttgart Germany Department of Electrical Computer and Energy Engineering and Materials Science and Engineering Program University of Colorado Boulder Colorado 80309 USA Renewable and Sustainable Energy Institute National Renewable Energy Laboratory and University of Colorado Boulder Colorado 80309 USA

Polymer dispersed liquid crystals are a useful model system for studying the relationship between surface topology and defect structures. They are comprised of a polymer matrix with suspended spherical nematic drops and are topologically constrained to host defects of an elementary hedgehog charge per droplet, such as bulk or surface point defects or closed disclination loops. We control the genus of the closed surfaces confining such micrometer-sized nematic drops with tangential boundary conditions for molecular alignment imposed by the polymer matrix, allowing us to avoid defects or, on the contrary, to generate them in a controlled way. We show, both experimentally and through numerical modeling, that topological constraints in nematic microdrops can be satisfied by hosting topologically stable half-integer bulk defect lines anchored to opposite sides of handlebody surfaces. This enriches the interplay of topologies of closed surfaces and fields with nonpolar symmetry, yielding new unexpected configurations that cannot be realized in vector fields, having potential implications for topologically similar defects in cosmology and other fields.

关键词： Topology

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Colorimetric Plasmon Resonance Imaging Using Nano Lycurgus Cup Arrays (vol 01, pg 68, 2013)

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ADVANCED OPTICAL MATERIALS 2013年第4期1卷 281-281页

作者： Gartia, Manas Ranjan Hsiao, Austin Pokhriyal, Anusha Seo, Sujin Kulsharova, Gulsim Cunningham, Brian T. Bond, Tiziana C. Liu, Gang Logan Department of Nuclear Plasma and Radiological Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Micro and Nano Technology Laboratory University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Department of Physics University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Department of Material Science and Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Department of Bioengineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Meso Micro and Nano Technologies Center Lawrence Livermore National Laboratory 7000 East Avenue Livermore California 94550 USA Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA

A large-area high-density nanoscale Lycurgus cup array is created with 100 times better sensitivity than any other reported nanoplasmonic device. With this device, nanoplasmonic spectroscopy sensing, for the first time, becomes colorimetric sensing requiring only the naked eye or ordinary visible color photography. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

关键词： colorimetric imaging surface plasmons nanoholes biosensing nanoarrays

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High throughput single cancer cell encapsulation and self sorting for protease assay by using jetting microfluidics

High throughput single cancer cell encapsulation and self so...

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17th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2013

作者： Jing, Tengyang Ramji, Ramesh Warkiani, Majid Ebrahimi Lim, Chwee Teck Han, Jongyoon Chen, Chia-Hung Department of Bioengineering National University of Singapore Singapore Singapore Singapore Singapore Department of Mechanical Engineering National University of Singapore Singapore Singapore National University of Singapore Singapore Singapore Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology United States Department of Biological Engineering Massachusetts Institute of Technology United States Singapore Singapore

ISBN: (纸本)9781632666246

In this work, a droplet microfluidic device integrated with droplet sorting function was presented for single cancer cell encapsulations and protease activity measurements. Individual cells were encapsulated into aqueous droplets at flow focusing junction under jetting conditions. Droplets with cells encapsulated inside are larger than other empty droplets, enabling effective droplet sorting through a deterministic lateral displacement micro-pillar design. All droplets with cells are therefore collected by an observation chamber for enzymatic activity monitoring. Here we focused on measuring matrix metalloproteinase (MMPs) secretion intensities at the individual cell level to obtain further insights into the malignant characteristics of these cells.

关键词： Drops

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Multiscale, dictionary-based speckle denoising

Multiscale, dictionary-based speckle denoising

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Computational Optical Sensing and Imaging, COSI 2013

作者： Krishnamurthy, Kalyani Mrozack, Alex Maggioni, Mauro Brady, David Duke Imaging and Spectroscopy Program Department of Electrical and Computer Engineering Duke University Box 90291 Durham NC 27708 United States Departments of Mathematics and Computer Science Duke University Box 90320 Durham NC 27708 United States

We propose a multiscale, dictionary-based, data-adaptive estimation method to recover intensities from multiplicative, speckle data. The proposed method preserves the edges and textures in the underlying image while s... 详细信息

ISBN: (纸本)9781557529756

关键词： Speckle

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Vector beams and vector fields: A look at methods of generation and potential applications

Vector beams and vector fields: A look at methods of generat...

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Frontiers in Optics, FIO 2013

作者： Toussaint, Kimani C. University of Illinois Urbana-Champaign IL 61820 United States Department of Mechanical Science and Engineering University of Illinois Urbana-Champaign IL 61820 United States Affiliate in the departments of Electrical and Computer Engineering and Bioengineering University of Illinois Urbana-Champaign IL 61820 United States

Potential applications of vector fields and beams, each of which is characterized by a spatially dependent polarization distribution, will be discussed. Various methods of generating such fields will also be presented... 详细信息

ISBN: (纸本)9781557529879

关键词： Diffraction limit Electric fields Optical fields Spatial light modulators Stimulated emission depletion microscopy Vector beams Instrumentation, measurement, and metrology (120.0120) Polarization (260.5430)

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Guest editorial special issue on medical imaging and image computing in computational physiology

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IEEE Transactions on Medical Imaging 2013年第1期32卷 1-7页

作者： Frangi, Alejandro F. Hose, D. Rod Hunter, Peter J. Ayache, Nicholas Brooks, Dana Department of Mechanical Engineering University of Sheffield Sheffield S1 3JD United Kingdom Department of Cardiovascular Science University of Sheffield Sheffield S10 2RX United Kingdom Auckland Bioengineering Institute University of Auckland Auckland 1010 New Zealand INRIA Sophia-Antipolis Sophia-Antipolis Sophia-Antipolis 06560 France Department of Electrical and Computer Engineering Northeastern University Boston MA 02115 United States

The January 2013 Special Issue of IEEE transactions on medical imaging discusses papers on medical imaging and image computing in computational physiology. Aslanid and co-researchers present an experimental technique based on stained micro computed tomography (CT) images to construct very detailed atrial models of the canine heart. The paper by Sebastian proposes a model of the cardiac conduction system (CCS) based on structural information derived from stained calf tissue. Ho, Mithraratne and Hunter present a numerical simulation of detailed cerebral venous flow. The third category of papers deals with computational methods for simulating medical imagery and incorporate knowledge of imaging physics and physiology/biophysics. The work by Morales showed how the combination of device modeling and virtual deployment, in addition to patient-specific image-based anatomical modeling, can help to carry out patient-specific treatment plans and assess alternative therapeutic strategies.

关键词： Medical imaging

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ESICM LIVES 2016: part two

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Intensive Care Medicine Experimental 2016年第1期4卷 205-404页

作者： S. Sivakumar F. S. Taccone K. A. Desai C. Lazaridis M. Skarzynski M. Sekhon W. Henderson D. Griesdale L. Chapple A. Deane L. Williams R. Strickland K. Lange D. Heyland M. Chapman M. J. Rowland P. Garry J. Westbrook R. Corkill C. A. Antoniades K. T. Pattinson G. Fatania A. J. Strong R. B. Myers C. M. Jermaine C. S. Robertson C. G. Rusin J. Hofmeijer L. Sondag M. C. Tjepkema-Cloostermans A. Beishuizen F. H. Bosch M. J. A. M. van Putten L. Carteron C. Patet D. Solari M. Oddo M. A. Ali C. Dias R. Almeida A. Vaz-Ferreira J. Silva E. Monteiro A. Cerejo A. P. Rocha A. A. Elsayed A. M. Abougabal B. N. Beshey K. M. Alzahaby S. Pozzebon A. Blandino Ortiz S. Cristallini O. Lheureux A. Brasseur J. L. Vincent J. Creteur M. Hravnak K. Yousef Y. Chang E. Crago R. M. Friedlander S. A. Abdelmonem S. A. Tahon T. A. Helmy H. S. Meligy F. Puig I. Dunn-Siegrist J. Pugin S. Gupta D. Govil S. Srinivasan S. J. Patel J. K. N A. Gupta D. S. Tomar M. Shafi R. Harne D. P. Arora N. Talwar S. Mazumdar E. E. Papakrivou D. Makris E. Manoulakas B. Tsolaki B. Karadodas E. Zakynthinos I. Palacios Garcia A. Diaz Martin V. Sanchez Encinares M. Pachón Ibañez J. Garnacho Montero G. Labrador T. Cebrero Cangueiro V. Poulose J. Koh J. W. Kam H. Yeter A. Kara O. Aktepe A. Topeli I. Tsolakoglou G. Intas P. Stergiannis A. A. Kolaros E. Chalari E. Athanasiadou A. Martika G. Fildisis V. Faivre C. Mengelle B. Favier D. Payen A. Poppe M. S. Winkler E. Mudersbach J. Schreiber M. L. Wruck E. Schwedhelm S. Kluge C. Zöllner T. Tavladaki A. M. Spanaki H. Dimitriou E. Kondili C. Choulaki E. Meleti D. Kafetzopoulos D. Georgopoulos G. Briassoulis A. García-de la Torre M. V. de la Torre-Prados T. Tsvetanova-Spasova P. Nuevo-Ortega C. Rueda-Molina A. Fernández-Porcel E. Camara-Sola L. Salido-Díaz A. García-Alcántara D. E. Meleti B. Suberviola J. Riera L. Rellan M. Sanchez J. C. Robles E. Lopez R. Vicente E. Miñambres M. Santibañez M. Le Guen J. Moore N. Mason M. Windpassinger O. Plattner E. Mascha D. I. Sessler Outcomes Research U. Melia J. Fontanet J. P. van den Berg M. Baylor College of Medicine Neurology/Neurocritical Care Houston USA Erasmus Hospital Intensive Care Medicine Brussels Belgium Centre Hospitalier Régional Orléans Réaimation Médicale Orléans France University of British Columbia Vancouver Canada University of Adelaide Discipline of Acute Care Medicine Adelaide Australia Royal Adelaide Hospital Intensive Care Adelaide Australia Griffith University Menzies Health Institute of Queensland Gold Coast Australia University of Adelaide Discipline of Medicine Adelaide Australia Kingston General Hospital Clinical Evaluation Research Unit Kingston Canada University of Oxford Nuffield Department of Clinical Neurosciences Oxford UK Oxford University Hospitals NHS Foundation Trust Neurosciences Intensive Care Unit Oxford UK King’s College Hospital Department of Neurosurgery London UK King’ College London Institute of Psychiatry Psychology and Neuroscience Department of Clinical Neuroscience London UK Rice University Computer Science Houston USA Baylor College of Medicine Neurosurgery Houston USA Baylor College of Medicine Pediatric Cardiology Houston USA University of Twente Clinical Neurophysiology Enschede Netherlands Rijnstate Hospital Neurology Arnhem Netherlands Medical Spectrum Twente Clinical Neurophysiology Enschede Netherlands Medical Spectrum Twente Intensive Care Enschede Netherlands Rijnstate Hospital Intensive Care Arnhem Netherlands CHUV Department of Intensive Care Medicine Neuroscience Critical Care Research Group Lausanne Switzerland Aga Khan University Hospital Anaesthesiology Karachi Pakistan Centro Hospitalar São João Intensive Care Porto Portugal Faculty of Medicine University of Porto Medicine Porto Portugal Faculdade de Ciências Universidade do Porto Departamento de Matemática Porto Portugal Centro de Matemática Universidade do Porto Porto Portugal The Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine Zaragoza Spain Centro Hospitalar

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Low-power signal processing methodologies for implantable biosensing platforms

Low-power signal processing methodologies for implantable bi...

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2013 IEEE Signal Processing in Medicine and Biology Symposium, SPMB 2013

作者： Croce Jr., Robert A. Vaddiraju, Santhisagar Legassey, Allen Islam, Syed K. Papadimitrakopoulos, Fotios Jain, Faquir C. IBiorasis Inc. Technology Incubation Program Storrs CT 06269 United States Dept. of Chemistry Institute of Materials Science University of Connecticut Storrs CT 06269 United States Department of Electrical and Computer Engineering University of Connecticut Storrs CT 06269 United States Analog VLSI and Devices Laboratory Department of Electrical Engineering and Computer Science University of Tennessee Knoxville TN 37996 United States

ISBN: (纸本)9781479930074

This paper presents the design and implementation of highly-miniaturized, low-power CMOS signal conditioning schemes intended for use in a totally implantable biomedical sensor platform. Due to the thrust for the development implantable biomedical sensing systems for health management and disease prevention, there exists a need for signal processing schemes which occupy very little on-chip real estate and consume negligible amounts of power. In light of this, this paper presents both a CMOS current-to-frequency converter and voltage-tofrequency converter which have been designed primarily for use in implantable biosensing platforms and applications. Such designs can be implemented in stand-alone single sensor designs, or in tandem to create multi-analyte architectures. The versatility of employing current-to-frequency as well as voltageto- frequency signal transduction schemes presents an avenue for the integration with any electrochemical sensing element which has been fabricated in an amperometric or voltammetric fashion. Furthermore, we demonstrate the efficacy of both these circuit designs by integrating them together with high performance electrochemical implantable glucose and pH sensors. The low power consumption and miniature size of the amperometric and voltammetric signal processing units (0.25 mm2 and 18 IlW / 0.045 mm2 and 122 IlW, respectively) presents an ideal design for signal processing in implantable continuous metabolic monitoring devices.

关键词： Signal processing

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