Low-Dimensional Phonon Phenomena in Nanometer Scale         Structures
{'Code': '03070003', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'DMR', 'LongName': 'Division Of Materials Research'}}
{'SignBlockName': 'Carol A. Savory-Heflin', 'PO_EMAI': None, 'PO_PHON': None}
The transport properties of electrons and phonons in systems with               lateral dimensions less than the dominant phonon wavelength will                be studied.  Typically, this criterion is met in structures with                lateral dimensions less than 100nm and at lattice temperatures                  below 1K.  Wires of these dimensions will be defined on a                       substrate using electron-beam techniques.  In order to avoid the                effects of coupling between the substrate phonons and the modes                 of the wire, the structures will be made free-standing using                    etching techniques.  At sufficiently low temperatures, they                     expect to observe spatial quantization of the phonons in the                    wires and so a commensurate reduction in the dimensionality                     describing the phonon spectrum.  Details of the spectrum will be                ascertained by studying the conductance variations of metallic                  wires that are shorter than the inelastic scattering length of                  the electrons.  In longer wires, magneto-conductance measurements               will be used to study the electron-phonon interaction in systems                of reduced phonon and electron dimensionality.  Finally, he                     will investigate phonon scattering processes and phonon                         localization effects in free-standing dielectric and                            semiconducting wires.
{'FirstName': 'Martin', 'LastName': 'Wybourne', 'PI_MID_INIT': 'N', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Martin N Wybourne', 'EmailAddress': 'martin.n.wybourne@dartmouth.edu', 'NSF_ID': '000435210', 'StartDate': '11/15/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Oregon Eugene', 'CityName': 'EUGENE', 'ZipCode': '974031905', 'PhoneNumber': '5413465131', 'StreetAddress': '1776 E 13TH AVE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Oregon', 'StateCode': 'OR', 'CONGRESSDISTRICT': '04', 'CONGRESS_DISTRICT_ORG': 'OR04', 'ORG_UEI_NUM': 'Z3FGN9MF92U2', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF OREGON', 'ORG_PRNT_UEI_NUM': 'Z3FGN9MF92U2'}
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{'Code': '1761', 'Text': 'SOLID STATE PHYSICS'}
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