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IEEE PhotonicsGlobal@Singapore, IPGC

作者： B. S. Luk'yanchuk T. C. Chong L. P. Shi M. I. Tribelsky Z. B. Wang L. Li C.-W. Qiu C. J. R. Sheppard J. H. Wu Agency for Science Data Storage Institute Singapore Electronics and Automation Moscow State Institute of Radioengineering Moscow Russia Aerospace and Civil Engineering University of Manchester UK Department of Electrical and Computer Engineering National University of Singapore Singapore Division of Bioengineering National University of Singapore Singapore School of Mechanical Engineering Xi'an Jiaotong University China

Development of modern materials, including nanoclusters, cluster assembled materials and metamaterials is among the actual challenges for the development of future nanotechnologies. Here we discuss the peculiarities of far-field and near-field light scattering by plasmonic nanoparticles, and possible applications of weakly dissipating materials. Over the last few years many peculiarities of light scattering have been found for nanoparticles in the regime of plasmon resonances. Optical excitation of localized plasmons is accompanied by inverse process - transformation of localized resonant plasmons into scattered light. When radiative damping prevails over the dissipative damping, the effects of anomalous light scattering result in sharp giant optical resonances and complicated near-field structure of the Poynting vector field, see e.g. [1-4]. Here we present peculiarities of far-field and near-field light scattering by plasmonic nanoparticles with weak dissipation and anisotropy.

关键词： Plasmons Resonant frequency Resonance light scattering Light scattering Nanoparticles Optical scattering Damping Nanostructured materials Assembly Metamaterials

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A wireless neural interface for chronic recording

A wireless neural interface for chronic recording

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IEEE Biomedical Circuits and Systems (BIOCAS)

作者： Reid R. Harrison Ryan J. Kier Sohee Kim Loren Rieth David J. Warren Noah M. Ledbetter Gregory A. Clark Florian Solzbacher Cynthia A. Chestek Vikash Gilja Paul Nuyujukian Stephen I. Ryu Krishna V. Shenoy Department of Bioengineering University of Utah Salt Lake UT USA Department of Electrical & Computer Engineering University of Utah Salt Lake UT USA University of Utah Salt Lake City UT US Department of Electrical Engineering University of Stanford Stanford CA USA Department of Computer Science University of Stanford Stanford CA USA School of Medicine University of Stanford Stanford CA USA Department of Neurosurgery University of Stanford Stanford CA USA Stanford University Stanford CA US

A primary goal of the integrated neural interface project (INIP) is to develop a wireless, implantable device capable of recording neural activity from 100 micromachined electrodes. The heart of this recording system is a low-power integrated circuit that amplifies 100 weak neural signals, detects spikes with programmable threshold-crossing circuits, and returns these data via digital radio telemetry. The chip receives power, clock, and command signals through a coil-to-coil inductive link. Here we report that the isolated integrated circuit successfully recorded and wirelessly transmitted digitized electrical activity from peripheral nerve and cortex at 15.7 kS/s. The chip also simultaneously performed accurate on-chip spike detection and wirelessly transmitted the spike threshold-crossing data. We also present preliminary successful results from full system integration and packaging.

关键词： Plastic integrated circuit packaging Clocks BiCMOS integrated circuits Electronics packaging Semiconductor device measurement Integrated circuit measurements Biomedical electrodes Circuit testing Integrated circuit testing System testing

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An information theoretic framework for genomic data analysis

An information theoretic framework for genomic data analysis

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IEEE Symposium on Bioinformatics and bioengineering (BIBE)

作者： Aaron McKenna Gil Alterovitz Bioinformatics Program Boston University Boston MA USA Harvard Partners Center for Genetics and Genomics Harvard Medical School Boston MA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA Children's Hospital Informatics Program Boston MA

The breadth of biological data collected in the last decade has far outstripped the methods available to process it. To effectively investigate and explore this abundance of data, novel automated collection and analysis approaches must be devised. We have developed a new open software framework, the Open Genomic Analysis Platform (OGAP), to aid in the analysis of genomic data. It is capable of analyzing a variety of data source, and focuses on using information theory to characterize data. The frameworks has is capable of import a variety of genome tied data, and provides custom analysis and visualization of results. We then demonstrate the use of this framework analyzing the Prochlorococcus Marinus organism. We show a strong correlation between the information content of sequence data and up regulation of gene expression during lytic infection.

关键词： Genomics Bioinformatics Data analysis Biological information theory Open source software Information analysis Information theory Data visualization Organisms Gene expression

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Novel action of biphasic electric current in vitro osteogenesis of human bone marrow mesenchymal stromal cells coupled with VEGF production

Novel action of biphasic electric current in vitro osteogene...

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International Conference on Osteoporosis and Bone Research 2008(2008国际骨质疏松和骨矿疾病学术会议)

作者： In Sook Kim JongKeun Song Yun MiSong Tae Hyung Lee Tae Hyung Cho Shin Saeng Lim Hui Pan Sung June Kim Soon Jung Hwang Dental Research Institute Seoul National UniversityBrain Korea 21 2nd Program for Craniomaxillofacial Life ScienceKorea School of Electrical Engineering and Computer ScienceSeoul National UniversitySeoulKorea Department of Maxillofacial Cell and Developmental BiologyDepartment of Oral and Maxillofacial SurgerySchool of DentistrySeoul National UniversityBrain Korea 21 2nd Program for Craniomaxillofacial Life ScienceSeoulKorea

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Novel action of biphasic electric current in vitro osteogenesis of human bone marrow mesenchymal stromal cells coupled with VEGF production

Novel action of biphasic electric current in vitro osteogene...

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International Conference on Osteoporosis and Bone Research 2008

作者： In Sook Kim Jong Keun Song Tae Hyung Lee Tae Hyung Cho Shin Saeng Lim Sung June Kim Soon Jung Hwang Dental Research Institute Seoul National UniversityBrain Korea 21 2nd Program for Craniomaxillofacial Life ScienceKorea School of Electrical Engineering and Computer Science Seoul National UniversitySeoulKorea Department of Maxillofacial Cell and Developmental Biology Department of Oral and Maxillofacial SurgerySchool of DentistrySeoul National UniversityBrain Korea 21 2nd Program for Craniomaxillofacial Life ScienceSeoulKorea

Objective:Exogenous electrical stimulation has a range of biostimulatory *** work from our laboratory showed the VEGF induction and increased proliferation by biphasic electric current (BEC) in rat calvarial *** this ... 详细信息

关键词： hBMSCs Novel action of biphasic electric current in vitro osteogenesis of human bone marrow mesenchymal stromal cells coupled with VEGF production

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Nanotech innovations: Nanotechnology enterprise at Michigan technological university

Nanotech innovations: Nanotechnology enterprise at Michigan ...

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2008 AIChE Annual Meeting, AIChE 100

作者： Jaszczak, John A. Raber, Mary Bennett, Michael Alaraje, Nasser Bergstrom, Paul L. Department of Physics Michigan Technological University 1400 Townsend Dr. Houghton MI 49931 United States Enterprise Program Michigan Technological University 1400 Townsend Dr. Houghton MI 49931 United States Department of Social Sciences Michigan Technological University 1400 Townsend Dr. Houghton MI 49931 United States School of Technology Michigan Technological University 1400 Townsend Dr. Houghton MI 49931 United States Department of Electrical and Computer Engineering Michigan Technological University 1400 Townsend Dr. Houghton MI 49931 United States Science Technology and Society Vassar College Poughkeepsie NY 12604-0246 United States

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Automated evaluation of HER-2/neu immunohistochemical expression in breast cancer using digital microscopy

Automated evaluation of HER-2/neu immunohistochemical expres...

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IEEE International Symposium on Biomedical Imaging

作者： Marios A. Gavrielides Hela Masmoudi Nicholas Petrick Kyle J. Myers Stephen M. Hewitt Center for Devices and Radiological Health CDRH Laboratory for the Assessment of Medical Imaging Systems U.S Food and Drug Administration National Institute of Biomedical Imaging and BioEngineering Silver Spring MD USA U.S Food and Drug Administration Laboratory for the Assessment of Medical Imaging Systems Silver Spring MD U.S.A Department of Electrical and Computer Engineering The George Washington University Washington DC U.S.A Tissue Array Research Program National Institutes of Health MD U.S.A

HER-2/neu (HER2) has been shown to be a valuable biomarker for breast cancer. However, inter-observer variability has been reported in the evaluation of HER2 with immunohistochemistry. It has been suggested that automated computer-based evaluation can provide a consistent and objective measure of HER2 expression. In this manuscript, we present an automated method for the quantitative assessment of HER2 using digital microscopy. The method employs imaging algorithms on whole slide images of tissue specimens for the extraction of two features describing HER2 membrane staining, namely membrane staining completeness and membrane staining intensity. A classifier was trained to merge the extracted features into an overall slide assessment score. Preliminary results showed good agreement with the provided truth. The developed automated method has the potential to be used as a computer aid for the immunohistochemical evaluation of HER2 expression with the objective of increasing observer reproducibility.

关键词： Breast cancer Microscopy Biomembranes Immune system Biomarkers Medical treatment Biomedical imaging Clustering algorithms Cells (biology) Feature extraction

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Visual learning in a material/energy balance class

Visual learning in a material/energy balance class

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114th Annual ASEE Conference and Exposition, 2007

作者： Zollars, Richard Hundhausen, Christopher Stefik, Melissa Washington State University United States School of Chemical Engineering and Bioengineering Washington State University United States Department of Computer Science School of Electrical Engineering and Computer Science Washington State University United States School of Electrical Engineering and Computer Science Washington State University United States

No abstract available

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On a combined electrical engineering and computer science department

On a combined electrical engineering and Computer Science De...

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114th Annual ASEE Conference and Exposition, 2007

作者： Blandford, Dick Hwang, Deborah University of Evansville United States Electrical Engineering and Computer Science Department University of Evansville United States Computer Science Program University of Evansville United States

In the United States, more than 10% of traditional electrical engineering programs have combined with computer science into a single department \Historically computer science programs emerged from mathematics or electrical engineering departments in the mid to late 1960's. Since mathematics is not typically in the engineering college many computer science programs developed independently from engineering programs. In the 1970's and early 1980's, with the advent of the microprocessor and embedded computer systems, computer engineering evolved mostly out of existing electrical engineering programs and has since become a separate discipline distinct from electrical engineering with its own accreditation process. It is common to see electrical engineering and computer engineering in the same department. computer engineering course work complements courses in computer science and in many cases there is considerable duplication. Thus, it makes sense to consider a combined electrical engineering and computer science department. At the authors' university, electrical engineering and computer science have been combined into a single department since 1990, with computer science, computer engineering, and the more traditional electrical engineering as ABET accredited programs within that department. A combined department offers the obvious advantages of administrative efficiency and elimination of duplication. There are many not-so-obvious advantages as well in the areas of program assessment, shared resources, team projects, and the new ideas and opportunities that are generated when programs are mixed. Disadvantages of a combined department have arisen as well. This paper presents the advantages and disadvantages of a combined department, details the methods used to accomplish the successful combination, and provides advice for those contemplating such a change. © American Society for engineering Education, 2007.

关键词： electrical engineering

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Anisotropic fluorocarbon plasma etching of Si/SiGe heterostruetures

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Journal of Vacuum science and Technology B: Microelectronics and Nanometer Structures 2007年第2期25卷 404-409页

作者： Ding, R. Klein, L.J. Eriksson, M.A. Wendt, A.E. Materials Science Program University of Wisconsin-Madison Madison WI 53706 Department of Physics University of Wisconsin-Madison Madison WI 53706 Department of Electrical and Computer Engineering University of Wisconsin-Madison Madison WI 53706

Fluorocarbon plasma etching of Si/SiGe heterostructures is demonstrated as a method for fabrication of quantum devices with vertical sidewalls. The heterostructures consist of layers of Si and SiGe, and anisotropic etching of the heterostructures using plasmas to isolate device elements is an attractive approach to fabricating devices. A challenge that has limited the use of fluorocarbon etching is the difference in Si and SiGe etch rates under comparative conditions. Preferential etching of SiGe can lead to undercutting beneath the top Si layer, causing a reduction in critical device dimensions of unknown magnitude. By using fluorocarbon etch gases with high carbon content, fluorocarbon sidewall passivation improves the anisotropy of etched feature profiles by preventing lateral etching of SiGe. Etch results with a C 4F8/Ar/N2 gas mixture show a straight sidewall profile through the layers of the heterostructure. © 2007 American Vacuum Society.

关键词： Plasma etching

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