Non-Destructive/Non-Intrusive Optical Probes of Surface     Composition
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{'SignBlockName': 'Darryl G. Gorman', 'PO_EMAI': None, 'PO_PHON': None}
This work addresses the need for improved non-destructive                       diagnostics to probe the composition of surfaces relevant to                    materials processing.  In particular, detection of process                      materials and impurities important in the production of silicon                 and gallium arsenide based semiconductors will be made.  They                   will employ non-linear mixing of laser frequencies at the surface               of the material of interest.  This mixing will create emission at               new frequencies which are easily detectable and are                             characteristic of the surface composition.  In Phase 1 they will                use an existing UHV surface science apparatus and pulsed laser                  system to prove the feasibility of detecting aluminum and carbon                on GaAs and silicon on aluminum.  Auger electron spectroscopy                   will be employed to quantitatively determine surface composition                and non-linear optical output will be correlated with the                       composition.  Interferences affecting the signal will be probed.                Standard CVD techniques will be employed to prepare the desired                 surface coverage.  Sub-monolayer sensitivity is expected using                  this method.
{'FirstName': 'William', 'LastName': 'Marinelli', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'William J Marinelli', 'EmailAddress': None, 'NSF_ID': '000108913', 'StartDate': '01/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Physical Sciences Inc', 'CityName': 'ANDOVER', 'ZipCode': '018101022', 'PhoneNumber': '5086890003', 'StreetAddress': '20 NEW ENGLAND BUSINESS CENTER D', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '06', 'CONGRESS_DISTRICT_ORG': 'MA06', 'ORG_UEI_NUM': 'RMG1AZ1ZH8Q7', 'ORG_LGL_BUS_NAME': 'PHYSICAL SCIENCES INC.', 'ORG_PRNT_UEI_NUM': 'RMG1AZ1ZH8Q7'}
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{'Code': '5371', 'Text': 'SBIR Phase I'}
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