Single-crystal – oriented-crystal – and epitaxy growth processes; – Organic compound containing single-crystal {c30b 29/54}
Reexamination Certificate
2007-08-21
2007-08-21
Gupta, Yogendra (Department: 1722)
Single-crystal, oriented-crystal, and epitaxy growth processes;
Organic compound containing single-crystal {c30b 29/54}
C117S926000, C117S927000, C977S712000, C977S721000, C977S715000, C977S707000
Reexamination Certificate
active
10913896
ABSTRACT:
The present invention comprises a method for fabricating hafnia film comprising the steps of providing a substrate having a surface that allows formation of a self-assembled monolayer thereon via covalent bonding; providing an aqueous solution that provides homogeneous hafnium ionic complexes and hafnium nanoclusters wherein the aqueous solution is capable of undergoing homogeneous precipitation under controlled conditions for a desired period of time at a controlled temperature and controlled solution acidity for desired nanocluster nucleation and growth kinetics, desired nanocluster size, desired growth rate of film thickness and desired film surface characteristics. The method further comprising forming the self-assembled monolayer on the surface of the substrate wherein the self-assembled monolayer comprises a plurality of hydrocarbon chains cross-linked together along the surface of the substrate, the hydrocarbon chains being uniformly spaced from one another and wherein each of the hydrocarbon chains having a functional anchoring group at a first end of the chain covalently bonded with the surface of the substrate and each of the hydrocarbon chains having a functional terminating group projected away from the surface wherein the functional terminating group provides a bonding site for the hafnium film to grow; and exposing the substrate to the aqueous solution for a desired period of time at a controlled temperature wherein the hafnium ionic complexes and the hafnium nanoclusters are deposited on the bonding site of the functional terminating group thereby forming the hafnia film wherein the hafnium bonded to the hydrocarbons and to one another provide a uniform ordered arrangement defined by the uniform arrangement of the hydrocarbons.
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Gupta Yogendra
Marasco Joseph A.
Rao G. Nagesh
Stafford Shelley L.
UT-Battelle LLC
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