نتایج جستجو برای: charge coupled device

تعداد نتایج: 971621  

2004
Eric R. Fossum Jong-In Song David V. Rossi

The two-dimensional electron gas charge-coupled device (ZDEG-CCD) structure for 111-V and other heterojunction materials is reviewed. Device design considerations for gate, insulator, and channel material parameters are presented. Optimization of ZDEG-CCD performance parameters such as well capacity, dark current, and transfer efficiency is discussed. Experimental results on AIGaAs/GaAs uniform...

2013
David J Hall Andrew Holland Neil Murray Jason Gow Andrew Clarke

As electrons are transferred through a radiation damaged Charge Coupled Device (CCD), they may encounter traps in the silicon in which they will be captured and subsequently released. This capture and release of electrons can lead to a ‘smearing’ of the image. The dynamics of the trapping process can be described through the use of Shockley-Read-Hall theory, in which exponential time constants ...

2001
Brian D. O. Anderson

The linear filters characterized by a state-variable realization given by matrices with nonnegative entries (called positive filters) are heavily restricted in their achievable performance. Nevertheless, such filters are the only choice when dealing with the charged coupled device MOS technology of charge routing networks (CRNs), because nonnegativity is a consequence of the underlying physical...

1999
Luca Benvenuti Lorenzo Farina Brian D. O. Anderson

The linear filters characterized by a state-variable realization given by matrices with nonnegative entries (called positive filters) are heavily restricted in their achievable performance. Nevertheless, such filters are the only choice when dealing with the charged coupled device MOS technology of charge routing networks (CRN’s), since nonnegativity is a consequence of the underlying physical ...

1999
M. R. Convery

We present three preliminary results from SLD on B decays: an inclusive search for the process b → s gluon, a measurement of the branching ratio for the process B → D ¯ DX, and measurements of the charged and neutral B lifetimes. All three measurements make use of the excellent vertexing efficiency and resolution of the CCD Vertex Detector and the first two make use of the excellent particle id...

2005
Mark W. Tate Darol Chamberlain Sol M. Gruner

An area x-ray detector constructed using commercially available “off-the-shelf” parts is described and its performance is characterized. The detector consists of a 1024 1024 pixel charge-coupled device CCD camera optically coupled to x-ray sensitive phosphor screen using a standard 35 mm camera lens. The conversion efficiency, spatial nonuniformity, spatial resolution and the detective quantum ...

2009
SangJun Moon Hasan Onur Keles Daniel Kuritzkes

We show a platform that merges a microfluidic chip with lensless imaging for CD4 T-lymphocyte counting at resource-limited settings. To capture CD4 T lymphocytes, anti-CD4 antibody was immobilized on a microfluidic chip. The captured cells were detected by a charge coupled device (CCD) sensor using lensless shadow imaging techniques. Gray scale shadow images of captured cells on the chip (24 mm...

2010
James Christofferson Kazuaki Yazawa Ali Shakouri

A new Charge Coupled Device (CCD) based, full-field thermoreflectance thermal imaging technique is demonstrated with 800 picoseconds temporal resolution. Transient thermal images of pulsed heating in single interconnect vias of 350nm and 550nm in diameter are shown. The use of pulsed laser diodes and dedicated synchronization circuits can significantly lower the cost and the image acquisition t...

1999
AMR M. MOHSEN T. C. McGILL CARVER A. MEAD

A detailed numerical simulation of the free charge trsnrfer in overlapped gate charge-coupled devices (CCD) is presented. The transport dynamics are analyzed in terms of thermal diffusion, self-induced fields, and fringing fields under all the relevant electrodes and the interelectrode regions with time-varying gate potentials. The results of the charge trmwfer with clifferent clocking schemes ...

2013
M. Narender Reddy Sravan Kumar

Bidirectional Dc–Dc Converters square measure accustomed Transfer the facility Between 2 Dc Sources in Either Direction. These Converters square measure wide utilized in Applications, like Hybrid electrical Vehicle Energy Systems, Uninterrupted Power provide, Fuel-Cell Hybrid Power Systems, electrical phenomenon Hybrid Power Systems, And Battery Charge. Several bifacial Dc–Dc Converters are res...

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