U.S.-Venezuela Cooperative Research:  Percolation in        Two-Dimensional Superconductors
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{'SignBlockName': 'Harold Stolberg', 'PO_EMAI': None, 'PO_PHON': None}
This award will support collaborative research between                          Prof. Christopher Lobb of Harvard University and                                Dr. Miguel Octavio of the Instituto Venezolano de Investigaciones               Cientificas (IVIC) in Caracas, Venezuela.  The objective of the                 research is to continue present work concerned with theoretical and             experimental aspects of percolation theory and superconductivity in             random media.  Percolation theory serves to unite several seemingly             diverse phenomena such as fluid flow in porous media, the strength of           composites and ceramics, dielectric breakdown in granular materials,            and the electrical properties of superconducting composite wires.               Recent theoretical advances have led to an increased understanding of           percolation in real materials with generally good agreement between             theory and simulations.  Work remains to be done in comparing                   theoretical predictions to measurements on real systems.                                                                                                        The researchers intend to perform theoretical work at Harvard, and              computer simulations at IVIC.  Two types of experiments are currently           undertaken and will be continued:  at IVIC thin percolative films are           being grown and studied in situ, aiming at understanding thin film              growth and its effect on superconductivity.  At Harvard, artificial             random films are being made using electron-beam lithography.                    Complementary facilities will allow a wide range of experiments to be           done.  This research has the potential for broad applicability from a           fundamental science point of view--the study of transport and                   breakdown processes in random media--to technological applications              such as the strength of composite materials.
{'FirstName': 'Christopher', 'LastName': 'Lobb', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Christopher J Lobb', 'EmailAddress': 'lobb@physics.umd.edu', 'NSF_ID': '000200918', 'StartDate': '03/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Harvard University', 'CityName': 'CAMBRIDGE', 'ZipCode': '021385366', 'PhoneNumber': '6174955501', 'StreetAddress': '1033 MASSACHUSETTS AVE STE 3', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '05', 'CONGRESS_DISTRICT_ORG': 'MA05', 'ORG_UEI_NUM': 'LN53LCFJFL45', 'ORG_LGL_BUS_NAME': 'PRESIDENT AND FELLOWS OF HARVARD COLLEGE', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '5945', 'Text': 'VENEZUELA'}
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