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Array Configuration (array + configuration)
Selected AbstractsAnalysis of fundamental light receiving characteristics of spherical solar cellsELECTRONICS & COMMUNICATIONS IN JAPAN, Issue 6 2008Hiroki Ishikawa Abstract Spherical solar cells are claimed to have some advantageous characteristics superior to those of ordinary planar solar cells. The most significant one is that the spherical solar cells have no directivity to light. This paper examines the characteristics based on geometrical considerations. The authors prove that a single spherical cell has no directivity as a whole. In practical use, many cells are used in an array configuration, where an individual cell receives the shadows cast by other cells around it. The adjacent shadows, so named in this paper, cause directivity. Their effects are evaluated geometrically and the theoretical considerations are verified through experiments. © 2008 Wiley Periodicals, Inc. Electron Comm Jpn, 91(6): 34,46, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecj.10119 [source] Motion compensation by phase correction for synthetic-aperture side-scan sonar imagingINTERNATIONAL JOURNAL OF IMAGING SYSTEMS AND TECHNOLOGY, Issue 6 2004Hua Lee This article presents a robust motion estimation and correction technique for the realization of synthetic-aperture side-scan sonar imaging. It utilizes the redundancy provided by the multiple-element receiver array configuration. Physical-array subimages are used for the estimation of the motion errors between adjacent receiver positions. Subsequently, the motion errors are formulated in the form of phase perturbations and are corrected accordingly by making adjustments to the wave-field data samples prior to the formation of synthetic-aperture images. © 2005 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 14, 259,261, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ima.20029 [source] Crossbar assembly of antibody-functionalized peptide nanotubes via biomimetic molecular recognition,JOURNAL OF PEPTIDE SCIENCE, Issue 2 2008Linglu Yang Abstract Previously, a large scale assembly of nanowires in a parallel array configuration has been demonstrated, and one type of nanowire could interconnect two electrodes in the high-wire density. However, to assemble nanowires into practical logic-gate configurations in integrated circuits, we need more than the parallel assembly of nanowires. For example, when the assembling nanowires are monopolar semiconductors, logic gates such as AND, OR and NOR are to be assembled necessarily from two types of semiconducting nanowires, n -type and p -type, and some of these nanowires must cross perpendicularly to form a crossbar geometry for the logical operation. In this paper, the crossbar assembly of antibody-functionalized peptide nanotubes was demonstrated by a new biomimetic bottom-up technique. Molecular recognition between antigens and antibodies enabled two types of the antibody-functionalized bionanotubes to place them onto targeted locations on substrates, where their complementary antigens were patterned. When two rectangular pads of antigens, human IgG and mouse IgG, were patterned perpendicularly on an Au substrate by nanolithography and then the antihuman IgG nanotubes and the antimouse IgG nanotubes were incubated on this substrate in solution, these bionanotubes were attached onto corresponding locations to form the crossbar configuration. Copyright © 2007 European Peptide Society and John Wiley & Sons, Ltd. [source] Experimental evaluation of indoor MIMO channel capacity for compact arrays of planar inverted-F antennasMICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 7 2007Héctor Carrasco Abstract Empirical results on indoor multiple input multiple output (MIMO) channel capacity obtained through the use of planar inverted-F antennas (PIFA) are presented. An extensive statistical study done at 2.45 GHz reveals how antenna proximity and array configuration affects MIMO capacity. It is concluded that certain linear or square PIFA based arrays allow very compact multi-antenna arrangements without significant capacity loss. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1754,1756, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22526 [source] Analysis of leakage currents in photovoltaic modules under high-voltage bias in the field,PROGRESS IN PHOTOVOLTAICS: RESEARCH & APPLICATIONS, Issue 1 2002J. A. del Cueto As photovoltaic modules become more widely disseminated in high-power or utility-power applications, their ability to withstand high voltage relative to ground becomes a reliability issue. Long-term effects of exposure to high-voltage stress in the field are investigated. Starting in early 1998, four commercially available PV modules inaugurated the high-voltage stress test at the Outdoor Test Facility at NREL. Modules representing both crystalline and amorphous silicon technologies were deployed on the high-voltage stress testbed located outdoors in order to simulate and assess operation in high-voltage array configurations. They were biased at positive and negative polarity 600 V at all times,except for 1 min at noon each day, when they were subjected to 2200 V bias,and their leakage currents to ground were monitored continuously. The ubiquitous effects of moisture on leakage conductance are analyzed. Module leakage conductance is found to be thermally activated with a characteristic energy that depends on relative humidity. Separate current paths likely responsible for leakage conductance are analyzed and identified at opposite ends of the relative humidity range. Leakage current data are integrated against time to arrive at accumulated charge due to long-term, high-voltage exposure. Published in 2002 by John Wiley & Sons, Ltd. [source] | ||||||||||