Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1977-03-17
1980-01-22
Emery, Stephen J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
422249, 156601, 156608, 156617SP, 156DIG88, B01J 1718
Patent
active
041850769
ABSTRACT:
Apparatus is disclosed for controlling the growth of a crystalline body of a selected material so that the body has a selected cross-sectional shape. The apparatus includes the structure normally employed in known capillary die devices and further includes means for observing at least the portion of the surfaces of the growing crystalline body and the meniscus (of melt material from which the body is being pulled) including the solid/liquid/vapor junction in a direction substantially perpendicular to the meniscus surface formed at the junction when the growth of the crystalline body is under steady state conditions. The cross-sectional size of the growing crystalline body can be controlled by determining which points exhibit a sharp change in the amount of reflected radiation of a preselected wavelength and controlling the speed at which the body is being pulled or the temperature of the growth pool of melt so as to maintain those points exhibiting a sharp change at a preselected spatial position relative to a predetermined reference position.
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Patzner et al., SCP and Solid State Technology, Oct. 1967, pp. 25-30.
Veeco, New Dyna-Gro Crystal Puller, 2 pages.
Hamco, Crystal Growing Furnace, 4 pages.
Bardsley, J. of Cryst. Growth, 24/25 (Mar. 1974), pp. 369-374.
Hatch Arthur E.
Yates Douglas A.
Emery Stephen J.
Mobil Tyco Solar Energy Corporation
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