Segmented nanowires displaying locally controllable properties
Abstract
Vapor-liquid-solid growth of nanowires is tailored to achieve complex one-dimensional material geometries using phase diagrams determined for nanoscale materials. Segmented one-dimensional nanowires having constant composition display locally variable electronic band structures that are determined by the diameter of the nanowires. The unique electrical and optical properties of the segmented nanowires are exploited to form electronic and optoelectronic devices. Using gold-germanium as a model system, in situ transmission electron microscopy establishes, for nanometer-sized Au--Ge alloy drops at the tips of Ge nanowires (NWs), the parts of the phase diagram that determine their temperature-dependent equilibrium composition. The nanoscale phase diagram is then used to determine the exchange of material between the NW and the drop. The phase diagram for the nanoscale drop deviates significantly from that of the bulk alloy.
- Inventors:
- Issue Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1083460
- Patent Number(s):
- 8389387
- Application Number:
- 12/683,054
- Assignee:
- Brookhaven Science Associates, LLC (Upton, NY)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
- DOE Contract Number:
- AC02-98CH10886
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Sutter, Eli Anguelova, and Sutter, Peter Werner. Segmented nanowires displaying locally controllable properties. United States: N. p., 2013.
Web.
Sutter, Eli Anguelova, & Sutter, Peter Werner. Segmented nanowires displaying locally controllable properties. United States.
Sutter, Eli Anguelova, and Sutter, Peter Werner. Tue .
"Segmented nanowires displaying locally controllable properties". United States. https://www.osti.gov/servlets/purl/1083460.
@article{osti_1083460,
title = {Segmented nanowires displaying locally controllable properties},
author = {Sutter, Eli Anguelova and Sutter, Peter Werner},
abstractNote = {Vapor-liquid-solid growth of nanowires is tailored to achieve complex one-dimensional material geometries using phase diagrams determined for nanoscale materials. Segmented one-dimensional nanowires having constant composition display locally variable electronic band structures that are determined by the diameter of the nanowires. The unique electrical and optical properties of the segmented nanowires are exploited to form electronic and optoelectronic devices. Using gold-germanium as a model system, in situ transmission electron microscopy establishes, for nanometer-sized Au--Ge alloy drops at the tips of Ge nanowires (NWs), the parts of the phase diagram that determine their temperature-dependent equilibrium composition. The nanoscale phase diagram is then used to determine the exchange of material between the NW and the drop. The phase diagram for the nanoscale drop deviates significantly from that of the bulk alloy.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 05 00:00:00 EST 2013},
month = {Tue Mar 05 00:00:00 EST 2013}
}
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