| NSF Org: |
CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems |
| Recipient: |
|
| Initial Amendment Date: | September 1, 2006 |
| Latest Amendment Date: | August 27, 2007 |
| Award Number: | 0553649 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Sumanta Acharya
sacharya@nsf.gov (703)292-4509 CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems ENG Directorate for Engineering |
| Start Date: | September 15, 2006 |
| End Date: | August 31, 2010 (Estimated) |
| Total Intended Award Amount: | $0.00 |
| Total Awarded Amount to Date: | $341,105.00 |
| Funds Obligated to Date: |
FY 2007 = $18,000.00 |
| History of Investigator: |
|
| Recipient Sponsored Research Office: |
110 INNER CAMPUS DR AUSTIN TX US 78712-1139 (512)471-6424 |
| Sponsor Congressional District: |
|
| Primary Place of Performance: |
110 INNER CAMPUS DR AUSTIN TX US 78712-1139 |
| Primary Place of
Performance Congressional District: |
|
| Unique Entity Identifier (UEI): |
|
| Parent UEI: |
|
| NSF Program(s): |
TTP-Thermal Transport Process, INT'L RES & EDU IN ENGINEERING |
| Primary Program Source: |
app-0107 |
| Program Reference Code(s): |
|
| Program Element Code(s): |
|
| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.041 |
ABSTRACT
ABSTRACT
National Science Foundation
Proposal Number CTS-0553649
Principal Investigator Shi, Li
Affiliation University of Texas at Austin
Proposal Title Thermal Transport at Nanoscale Point and Line Constrictions and Interfaces
Thermal transport at nanometer scale point and line constrictions and interfaces is a fundamental problem that is important for a number of technologies, such as scanning probe microscopy, novel thermal interface materials, and nanostructural electronic and thermoelectric devices. As of today, few measurement results of thermal resistances at nanoscale constrictions and interfaces are available. Moreover, although there have been extensive theoretical studies of contact thermal resistance between two solids, most of the existing analytical models have been developed for macro to micro scale contacts.
The research objective of this program is to measure and model thermal transport at nanoscale point and line constrictions and interfaces. Ultrahigh vacuum atomic force microscopy and nanofabricated structures will be employed to measure the thermal resistance of nanometer size point contacts, line interfaces, and Si constrictions. A molecular dynamics (MD) simulation method will be used to calculate the thermal resistance and temperature distribution at these nanoscale constrictions and interfaces. In addition to heat conduction, the calculation will investigate the influences of near- and far- field radiation transfer on the temperature distribution and thermal resistance. The results from the measurements and calculations will be correlated and used to verify and improve analytic models.
Intellectual Merit. The proposed research will obtain measurement data of thermal resistance at nanoscale constrictions and interfaces. The results from the measurements and simulations will fill in a knowledge gap and provide timely support for thermal design and thermal management of electronic and thermoelectric devices as well as new scanning probe microscopy and data storage methods.
Broader Impacts. The research will provide training opportunities for two graduate students and an undergraduate student participant in the NSF Research Experience for Undergraduates (REU) program. The research results will be used as case studies in two graduate courses and one new undergraduate technical elective course. The two investigators will give short lectures in the seminar series organized by local ASME student organization, and will actively participate in K-12 outreach activities sponsored by the university. The close collaboration with an industrial researcher will have mutual benefits for the education of the participating students and the transfer of knowledge gained from this study for industrial applications.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
Note:
When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external
site maintained by the publisher. Some full text articles may not yet be available without a
charge during the embargo (administrative interval).
Some links on this page may take you to non-federal websites. Their policies may differ from
this site.
Please report errors in award information by writing to: awardsearch@nsf.gov.
