Study of Heat Transfer, Flow and Deposition in the Modified Chemical Vapor Deposition Process
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
{'SignBlockName': 'George P. Peterson', 'PO_EMAI': None, 'PO_PHON': None}
The modified chemical vapor deposition (MCVD) process is in                     wide use for the fabrication of optical fibers.  One of the                     steps of the process is to deposit high purity chemicals on the                 inner surface of a fused silica tube to form doped silica glass                 layers.  This is accomplished by passing a high purity gas                      mixture through the bore of a rotating silica tube.  The tube                   is mounted in a glass-working lathe and is heated externally by                 a moving torch.  The reagents are heated by the torch, causing                  a gas-phase reaction which results in the formation of                          submicron glassy particles.  These particles travel along the                   tube and are deposited on the wall, downstream of the torch.                                                                                                    Although the MCVD process is operational, the theoretical                       underpinnings are woefully weak.  The objective of the proposed                 research is to provide a strengthened underpinning which should                 lead to more efficient operation.  Features to be investigated                  include the effects of torch heating, torch speed, gas flow,                    tube rotation, and thermal radiation.
{'FirstName': 'Ralph', 'LastName': 'Greif', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Ralph Greif', 'EmailAddress': 'greif@me.berkeley.edu', 'NSF_ID': '000124362', 'StartDate': '07/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of California-Berkeley', 'CityName': 'BERKELEY', 'ZipCode': '947101749', 'PhoneNumber': '5106433891', 'StreetAddress': '1608 4TH ST STE 201', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'California', 'StateCode': 'CA', 'CONGRESSDISTRICT': '12', 'CONGRESS_DISTRICT_ORG': 'CA12', 'ORG_UEI_NUM': 'GS3YEVSS12N6', 'ORG_LGL_BUS_NAME': 'REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1406', 'Text': 'TTP-Thermal Transport Process'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8713582.xml'}