scholarly journals Research on static elimination and particulate contamination mechanism in clean room environment.

1997 ◽  
Vol 34 (1) ◽  
pp. 44-46
Author(s):  
Norikazu NAMIKI
Keyword(s):  
Clean Room ◽  
Particulate Contamination ◽  
Clean Room Environment

Work Area Characterization to Control Product Cleanliness

1986 ◽  
Vol 29 (2) ◽  
pp. 29-33
Author(s):  
Suzanne Keilson
Keyword(s):  
Hubble Space Telescope ◽  
Three Dimensional ◽  
Primary Objective ◽  
Clean Room ◽  
Time Dynamics ◽  
Particulate Contamination ◽  
Aerospace Applications ◽  
Control Product ◽  
Work Area ◽  
Clean Room Environment

A particulate contamination characterization program was initiated to develop operational profiles for the Perkin-Elmer clean room facility being used to assemble and verify the NASA Hubble Space Telescope. The primary objective of this program was to develop an analytical model to provide obscuration prediction data for hardware exposed to typical clean room environments. A performance profile of the work area was derived from real-time experimental data and related the effectiveness of the facility design to operational manpower and activity loading. The three-dimensional and time dynamics of this clean room environment were both considered in the analysis of the test data and suggest areas for further study that will provide additional guidelines for the design of large clean room facilities for future aerospace applications.

Atomic scale fabrication of dangling bond structures on hydrogen passivated Si(001) wafers processed and nanopackaged in a clean room environment

2014 ◽  
Vol 288 ◽  
pp. 83-89 ◽  
Author(s):  
Marek Kolmer ◽  
Szymon Godlewski ◽  
Rafal Zuzak ◽  
Mateusz Wojtaszek ◽  
Caroline Rauer ◽  
...  
Keyword(s):  
Atomic Scale ◽  
Dangling Bond ◽  
Clean Room ◽  
Clean Room Environment

Evaluating Clean Room Products for Aerospace Applications

1986 ◽  
Vol 29 (4) ◽  
pp. 19-22
Author(s):  
Suzanne Keilson
Keyword(s):  
Hubble Space Telescope ◽  
Selection Process ◽  
Clean Room ◽  
Optical Telescope ◽  
Unique Challenge ◽  
Contamination Control ◽  
Particulate Contamination ◽  
Aerospace Applications ◽  
Final Selection ◽  
Plastic Products

Large aerospace assemblies, such as the Optical Telescope Assembly (OTA) for the Hubble Space Telescope built by Perkin-Elmer, present a unique challenge to anyone evaluating clean room products for use on these programs. Very stringent requirements for molecular and particulate contamination control are often not taken into account by the manufacturers of clean room products. The realization that extractables of plastic products pose a serious contamination threat to optical assemblies is gaining wider recognition, but even so-called "solvent compatible" products may not meet the requirements of all sensitive payloads. A process is described for evaluating, selecting and monitoring products in the most widespread use—garments, gloves, and wipers. Notwithstanding well-trained, conscientious personnel, items such as garments, gloves and wipers can be used in such a variety of ways that their tolerance for misuse without untoward consequences must be considered. The final selection process must therefore consider both compatibility and durability and, as was discovered, a unique choice is not always possible for all applications.

Fire protection of flammable work stations in the clean room environment of a microelectronic fabrication facility

1986 ◽  
Vol 22 (2) ◽  
pp. 148-165 ◽  
Author(s):  
Fred L. Fisher ◽  
Robert Brady Williamson ◽  
Gary L. Toms ◽  
Dennis M. Crinnion
Keyword(s):  
Fire Protection ◽  
Clean Room ◽  
Microelectronic Fabrication ◽  
Clean Room Environment

Clean Room Considerations for Avoiding Molecular Contamination

1985 ◽  
Vol 28 (5) ◽  
pp. 21-22
Author(s):  
Martin McClellan
Keyword(s):  
Lessons Learned ◽  
Ultraviolet Spectrum ◽  
Clean Room ◽  
Screening Process ◽  
Handling System ◽  
Control Functions ◽  
Industry Standard ◽  
Standard Practices ◽  
Potential Contaminant ◽  
Clean Room Environment

Control of contamination for optical products, especially those operating in the ultraviolet spectrum, is examined from three perspectives: materials involved, personnel controls, and environmental conditions. These control functions assume even greater significance when large clean room facilities are required for complex aerospace assemblies, and many clean room products or industry standard practices are not necessarily applicable. Every material introduced into a clean room environment is a potential contaminant, and must be reviewed as part of the operational screening process. Plastics commonly used in the design of clean room products can sometimes outgas and thus degrade optical performance. Facilities rework modifications, local or remote, can introduce contaminants into the air handling system which could produce deleterious effects on critical hardware. Lessons learned and the solutions that have been developed at Perkin-Elmer are discussed in several key areas: modular clean room procurement, verification of HEPA filters, clean room maintenance, design and operational certification and materials controls.

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