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US 8,263,480 B2Granted
Methods for site-selective growth of horizontal nanowires, nanowires grown by the methods and nanodevices comprising the nanowires
AssigneesSamsung Electronics Co., Ltd., Seoul National University Industry Foundation
InventorsEun Kyung Lee, Byoung Lyong Choi, Young Kuk, Je Hyuk Choi, Hun Huy Jung
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Abstract
Methods for the site-selective growth of horizontal nanowires are provided. According to the methods, horizontal nanowires having a predetermined length and diameter can be grown site-selectively at desired sites in a direction parallel to a substrate to fabricate a device with high degree of integration. Further provided are nanowires grown by the methods and nanodevices comprising the nanowires.
Claims7
A method for the site-selective growth of horizontal nanowires, the method comprising the steps of:
- forming a first silicon oxide film on a silicon substrate (first step);
- forming at least one pi-shaped aluminum layer having a thickness, a length and a width at sites where it is desired to grow nanowires on the first silicon oxide film by patterning (second step);
- forming a second silicon oxide thin-film to cover all surfaces except surfaces of one side of the pi-shaped aluminum layer (third step);
- anodizing the uncovered surfaces of the pi-shaped aluminum layer to a depth to form hollow channels, each of which is surrounded by an aluminum oxide film, in a direction parallel to the silicon substrate (fourth step);
- depositing catalytic metal layers on bottom surfaces of the hollow channels opposed to openings of the hollow channels (fifth step);
- and
- growing nanowires from the catalytic metal layers within the hollow channels in the direction parallel to the silicon substrate (sixth step).
4 more elements
Dependencies are inferred from the claim text.