An ohmic device is one that demonstrates the Ohm's Law for the relationship of current through it and voltage across. According to Ohm's law V / I = R where V is the voltage, I is the current and R is a constant called the resistance. Ohms law, named after its discoverer Georg Ohm [1], states that the potential difference (or voltage drop V) between the ends of a conductor (for example, a resistor R) and the current, (I) flowing through R are proportional at a given temperature: where V is the voltage and I... The word current usually implies a flow or movement. ... In the physical sciences, potential difference is the difference in potential between two points in a conservative vector field. ... Resistance can mean one of: electrical resistance inner resistance antibiotic resistance resistance to a disease (see related subject immunology) a political or military resistance movement against foreign occupation, or more rarely, against ones own government geological resistance fluid resistance thermal resistance This is a disambiguation page — a navigational aid...
No actual device can demonstrate ideal resistance described by Ohm's law but many devices approximate ohmic devices closely. Examples of ohmic devices include resistors, pieces of wire and light bulbs (though the resistance changes with temperature).
In semiconductor devices highly doped regions (referred to as ohmic contacts) approximate ohmic responses even though moderately doped regions are strongly dependant on voltage. A semiconductor is a material which has an electrical conductance which is between that of an insulator and a conductor. ... Doping is generally the practice of adding impurities to something. ...
Ohmic heating (sometimes also referred to as Joule heating, electrical resistance heating, direct electrical resistance heating, electroheating, and electroconductive heating) is defined as a process wherein (primarily alternating) electric currents are passed through foods or other materials with the primary purpose of heating them.
Ohmic heating is distinguished from other electrical heating methods either by the presence of electrodes contacting the food (as opposed to microwave and inductive heating, where electrodes are absent), frequency (unrestricted, except for the specially assigned radio or microwave frequency range), and waveform (also unrestricted, although typically sinusoidal).
For most ohmic processes, which rely on heat, it may be unnecessary for processors to claim this effect in their process filings; however, if sufficient data is available, it may be possible for future processes to be reduced.
A device as in claim 1, in which the photoresponsive layer comprises a semiconductor material having differently doped strata which define a junction therebetween, the photoresponsive layer generating a photovoltaic effect in response to light incident on the front surface.
A device as in claim 1, in which the thickness of the photoresponsive layer is reduced from an initial value to a final value by grinding.
A device as in claim 1, in which the thickness of the photoresponsive layer is reduced from an initial value to a final value by etching.
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