Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1984-05-01
1986-05-20
Arnold, Bruce Y.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156605, 156622, 156624, 350400, G02F 103
Patent
active
045897379
ABSTRACT:
Disclosed is a multilayer electro-optical material having a plurality of adjacent, single crystals wherein each crystal layer has different electrical and optical properties from its adjacent layer or layers. This material is made by a method wherein the successive layers are epitaxially grown from a molten solution of said electro-optical material optionally containing at least one dopant. In one embodiment, such electro-optic material comprises silver thiogallate, wherein successive epitaxial layers are grown from a molten solution of silver thiogallate and potassium chloride, and which optionally includes at least one dopant. This molten solution exhibits the characteristic that, for any specific solution composition, layers having different electrical and optical properties can be obtained by cooling over the temperature range which will yield crystal growth of the composition corresponding to the desired electrical and optical properties. By taking advantage of this temperature/composition phase precipitation, multi-layers are formed by cooling first within one temperature range to form on the seed crystal substrate a layer of silver thiogallate including the dopant and then subsequently forming on this first layer a second layer of different composition varying from substantially pure silver thiogallate to silver thiogallate including at least one dopant, by cooling within a different temperature range. By successively alternating between cooling over these different temperature ranges, multiple layers are formed with adjacent layers having different electrical and optical properties. The multi-layerd structures produced by the above method can be utilized in electro-optical devices, and particularly as the tunable birefringent medium in tunable electro-optic filters.
REFERENCES:
patent: 3345141 (1967-10-01), Nester et al.
patent: 4001076 (1977-01-01), Robinson et al.
patent: 4229073 (1980-10-01), Lotspeich
patent: 4247166 (1981-01-01), Yeh
patent: 4500178 (1985-02-01), Yeh
patent: 4534822 (1985-08-01), Sashital
Arnold Bruce Y.
Hughes Aircraft Company
Karambelas A. W.
Sarjeant John A.
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