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searching for Dark current (chemistry) 44 found (48 total)

alternate case: dark current (chemistry)

Dark current (physics) (172 words) [view diff] no match in snippet view article find links to article
In physics and in electronic engineering, dark current is the relatively small electric current that flows through photosensitive devices such as a photomultiplier
Dark current spectroscopy (42 words) [view diff] no match in snippet view article find links to article
Dark Current Spectroscopy is a technique that is used to determine contaminants in silicon. McColgin, W.C. (1992), "Dark current quantization in CCD
Photoreceptor cell (4,328 words) [view diff] no match in snippet view article find links to article
cells is usually −65 mV). This depolarizing current is often known as dark current. The signal transduction pathway is the mechanism by which the
Dark-frame subtraction (279 words) [view diff] no match in snippet view article find links to article
subsequent images to correct for fixed-pattern noise such as that caused by dark current. Dark-frame subtraction has been done for some time in scientific imaging;
Photodiode (2,218 words) [view diff] no match in snippet view article find links to article
photodiode is the sum of the dark current (current that is generated in the absence of light) and the photocurrent, so the dark current must be minimized to maximize
Flat-field correction (527 words) [view diff] no match in snippet view article find links to article
flat-field consists of two numbers for each pixel, the pixel's gain and its dark current (or dark frame). The pixel's gain is how the amount of signal given by
Hole accumulation diode (238 words) [view diff] no match in snippet view article find links to article
device (CCD) or CMOS imaging sensor. HAD devices function by reducing dark current that occur in the absence of light falling on the imager for noise reduction
Charge-coupled device (4,982 words) [view diff] no match in snippet view article find links to article
generation in the neutral bulk. The last three processes are known as dark-current generation, and add noise to the image; they can limit the total usable
Bias frame (196 words) [view diff] no match in snippet view article find links to article
elaborate the sensor data, and not noise from charge accumulation (e.g. from dark current) within the sensor itself. A bias frame is complementary to a dark frame
Catalina Sky Survey (796 words) [view diff] no match in snippet view article find links to article
the CSS team. The cameras are cooled to approximately -100 °C so their dark current is about 1 electron per hour. These 4096×4096 pixel cameras provide a
Visual phototransduction (1,426 words) [view diff] no match in snippet view article find links to article
channels open allowing a steady inward current, called the dark current. This dark current keeps the cell depolarized at about -40 mV. The depolarization
Photocathode (826 words) [view diff] no match in snippet view article find links to article
1929. Sensitivity from 300 nm to 1200 nm. Since Ag-O-Cs has a higher dark current than more modern materials photomultiplier tubes with this photocathode
Photomultiplier (4,034 words) [view diff] no match in snippet view article find links to article
this is called the dark current. Photon counting applications generally demand photomultipliers designed to minimise dark current. Nonetheless, the ability
Image sensor format (4,764 words) [view diff] no match in snippet view article find links to article
pixel), is the quantum efficiency, is the exposure time, is the pixel dark current in electrons per second and is the pixel read noise in electrons. Each
Staebler–Wronski effect (974 words) [view diff] no match in snippet view article find links to article
L. Staebler and Christopher R. Wronski in 1977. They showed that the dark current and photoconductivity of hydrogenated amorphous silicon can be reduced
Avalanche photodiode (1,067 words) [view diff] no match in snippet view article find links to article
charge carriers; and total leakage current, which is the sum of the dark current and photocurrent and noise. Electronic dark noise components are series
Cyclic nucleotide-gated ion channel (4,516 words) [view diff] no match in snippet view article find links to article
photoreceptor to depolarize. This depolarizing flow of ions is known as the dark current. When the retina of the eye detects light, a reaction known as a phototransduction
Image noise (2,356 words) [view diff] no match in snippet view article find links to article
this noise is sometimes known as "dark shot noise" or "dark-current shot noise". Dark current is greatest at "hot pixels" within the image sensor. The
Radiometric calibration (96 words) [view diff] no match in snippet view article find links to article
There are usually three main parts of the CCD output to be considered; dark current, vignetting and Quantum efficiency. After a set of precise laboratory
S Ori 70 (691 words) [view diff] no match in snippet view article find links to article
with near-infrared images; after subtracting the sky background and dark current, an extracted object spectrum was derived. It was the faintest and coolest
PIN diode (1,419 words) [view diff] no match in snippet view article find links to article
Under reverse bias, the diode ordinarily does not conduct (save a small dark current or Is leakage). When a photon of sufficient energy enters the depletion
Back-illuminated sensor (1,151 words) [view diff] no match in snippet view article find links to article
lead to a host of problems, such as cross-talk, which causes noise, dark current, and color mixing between adjacent pixels. Thinning also makes the silicon
Reciprocity (photography) (2,438 words) [view diff] no match in snippet view article find links to article
levels, not usually referred to as reciprocity failure, namely noise from dark current, but this effect can be controlled by cooling the sensor. A similar
Position sensitive device (818 words) [view diff] no match in snippet view article find links to article
2-D tetra-lateral PSD has the advantages of fast response, much lower dark current, easy bias application and lower fabrication cost. Its measurement accuracy
Thermophotovoltaic (5,120 words) [view diff] no match in snippet view article find links to article
intrinsic carrier concentration. As a result, Ge diodes have fast decaying “darkcurrent and therefore, a low open-circuit voltage. In addition, surface passivation
Active pixel sensor (2,793 words) [view diff] no match in snippet view article find links to article
photodiode was originally used in interline transfer CCDs due to its low dark current and good blue response, and when coupled with the transfer gate, allows
Black Canaan (3,166 words) [view diff] no match in snippet view article find links to article
in the South, a deep, dark current flows forever, out of sight of the whites who but dimly suspect its existence. A dark current of colored folks' thoughts
Indium gallium arsenide (3,102 words) [view diff] no match in snippet view article find links to article
photodiodes have faster time response, higher quantum efficiency and lower dark current for the same sensor area. GaInAs photodiodes were invented in 1977 by
Single-photon avalanche diode (1,252 words) [view diff] no match in snippet view article find links to article
in this unstable above-breakdown regime, a single photon (or a single dark current electron) can set off a significant avalanche of electrons. Practically
Soul Sign (222 words) [view diff] no match in snippet view article find links to article
Scandinavia with shows in Denmark and Sweden in support of "Life In the Dark". Current members Mark Boals - vocals Bjorn Englen - bass guitar Jan Mengeling
Infrared photography (3,918 words) [view diff] no match in snippet view article find links to article
cooling to reduce thermally induced dark currents in the sensor (see Dark current (physics)). Lower cost uncooled thermographic digital cameras operate
Index of physics articles (D) (1,782 words) [view diff] no match in snippet view article find links to article
Daresbury Laboratory Dark-energy-dominated era Dark-energy star DarkSide Dark current (physics) Dark energy Dark flow Dark fluid Dark galaxy Dark matter Dark
Neutron activation analysis (2,296 words) [view diff] no match in snippet view article find links to article
diode, and when cooled to ~77 K by liquid nitrogen to reduce dark current and detector noise, produces a signal which is proportional to the photon
Lead selenide (1,341 words) [view diff] no match in snippet view article find links to article
in both the reduction of the Auger mechanism and the reduction of the dark current associated with the presence of multiple intergrain depletion regions
HoloVID (877 words) [view diff] no match in snippet view article find links to article
value in each light diode cell is a function of the bias current, the dark current and the incident ionizing radiation (in this case, the returning laser
Michael F. Land (1,140 words) [view diff] no match in snippet view article find links to article
ISBN 90-04-12918-9. Land M.F. (2004). Nocturnal vision: bees in the dark. Current Biology 14: R615-616. Land M.F. (2004). The coordination of rotations
Wide dynamic range (924 words) [view diff] no match in snippet view article find links to article
intensities. The darkest signal is constrained by the thermal noise, or "dark current", of the sensor. The brightest signal is limited by the total amount
2006 in poetry (4,389 words) [view diff] no match in snippet view article find links to article
publisher: S. Fischer Verlag; anthology Hendrik Jackson. Dunkelströme ("Dark Current") Kookbooks, 72 pages, ISBN 978-3-937445-18-2 Christoph Janacs, Unverwandt
Laser beam profiler (5,492 words) [view diff] no match in snippet view article find links to article
of the CCD pixels with no incident light. The finite value is due to dark current, readout noise, and other noise sources. For shot-noise-limited noise
Starlink Project (1,484 words) [view diff] no match in snippet view article find links to article
programs for reducing CCD-like data. They allow you to debias, remove dark current, pre-flash, flatfield, register, resample, normalize and combine your
SIR-2 (466 words) [view diff] no match in snippet view article find links to article
technology satellite. SIR performed the same mission, but had a problem with dark current induced noise due to varying temperatures caused by differences in heat
Photoconductive atomic force microscopy (8,675 words) [view diff] no match in snippet view article find links to article
Most sampling procedures often begin by obtaining the dark current images of the sample. Dark current is referred to as the photocurrent generation created
List of astronomy acronyms (11,844 words) [view diff] no match in snippet view article find links to article
– (instrumentation) Multi-Pinned-Phase, CCD technology that reduces dark current noise MPCS – (publication) Minor Planet circulars Supplement MPS – (observing
List of vacuum tubes (42,995 words) [view diff] no match in snippet view article find links to article
also called S1. Transmission-mode, sensitive from 300–1200 nm. High dark current; used mainly in near-infrared, with the photocathode cooled. T Multialkali