Cryogenic thermoelectric cooler
First Claim
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1. A thermoelectric cooler, operative at cryogenic temperatures, comprising:
- a first junction formed from a first material in electrical contact with a second material, said first and second materials having dissimilar Seebeck coefficients, and at least said second material comprising a slightly metallic material that does not have a rising electrical resistance with lowering temperatures but does maintain a reasonable Seebeck coefficient; and
a current source connected to pass current across said junction.
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Abstract
A Seebeck effect thermoelectric cooler, operative at cryogenic temperatures, in which two materials having different Seebeck coefficients are in electrical contact so that current flow thereacross cools the junction. One or both of the materials comprise a metal-insulator transition material characterized by doping, alloying, or other means to be just slightly metallic so that electrical resistance becomes lower at lower temperatures, but the Seebeck coefficient does not decline at lower temperatures, as would be the case if the material were allowed to become fully metal-like.
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35 Claims
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1. A thermoelectric cooler, operative at cryogenic temperatures, comprising:
- a first junction formed from a first material in electrical contact with a second material, said first and second materials having dissimilar Seebeck coefficients, and at least said second material comprising a slightly metallic material that does not have a rising electrical resistance with lowering temperatures but does maintain a reasonable Seebeck coefficient; and
a current source connected to pass current across said junction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- a first junction formed from a first material in electrical contact with a second material, said first and second materials having dissimilar Seebeck coefficients, and at least said second material comprising a slightly metallic material that does not have a rising electrical resistance with lowering temperatures but does maintain a reasonable Seebeck coefficient; and
Specification