Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"clean room"”.
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An investigation and examination of the levels and types of bacterial contamination on the surface of clean room operators' garments.
… death. Operators are the primary source of clean room contamination, with the majority of their detritus being identified as skin squames and their related microorganisms. The ability of operator associated bacterial contamination to disseminate through specialist garments worn in the clean …
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Implementing lean methodologies within a maintenance organization
… internship objective was to reduce the number of clean room re-sanitizations. Currently, clean rooms undergo a costly and time-consuming re-sanitization whenever an air handler is shut down for a brief period of time. It is likely that some of these cleanings are unnecessary, and eliminating …
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Design of Structural Stand for High-Precision Optics Microscopy
… precision level of 1 µm. Mounted in a class 100 clean room with a raised tile floor, the microscope is supported by a steel stand that structurally connects the microscope to the concrete ground. Due to ambient vibrations experienced in the system, the microscope is only able to reliably reach a …
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Automatic Particle Counting Using An Acoustic Transducer
… military and aerospace sectors. Monitoring of clean room environments, and spacecraft integration and check out facilities are some of the most important aplications. In the early days test filters were examined with a microscope to determine the number and size of particles that were being …
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Submicron patterning using laser interference lithography
… and development procedures of our existing clean room capabilities. The main departure is solely in means of pattern delineation. IL is a "mask less" technique that employs the interference fringe pattern of two coherent beams, and can therefore be generated with a commercial laser. Due to …
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Fabrication of a picoliter microreactor with multilayer elastomer values
… The fabrication of the device was done without a clean room and using no specialized equipment. Creation of the device and using it for testing requires little training and takes less time than performing the test using conventional methods. The device could readily be made and used by researchers …
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Process window and variation characterization of the micro embossing process
… cost in manufacturing compared to the standard clean room processes. Currently, the research about this process is still on the feasibility level, with not a quantitative work to optimize the process parameters and assure product quality. In this thesis, an experimental study on process window …
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Development of a spring-less RF MEMS switch
… through different armature design.<br/><br/>A clean room fabrication flow is described as part of the development process of this novel switch. This is based on two Pyrex wafers and a SOI wafer utilising a double bonding and DRIE processes. RF characterisation of the coplanar waveguide and the …
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Mars, Tennessee
… up, finally speaking about the loss of a child. “Clean-Room” places the main character, Adrian Schope, in a situation where he must choose between disappointing his coworkers and jeopardizing his personal safety. The short story “Day Math Loves Drugs” finds the protagonist, Kenny Blanton, scheming …
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Design, Fabrication, and Characterization of an Electrostatically Actuated Microfluidic Valve
… the development of several new processes in the clean room, including RIE Plasma bonding, PDMS sputtering techniques, and multilayer PDMS thin film fabrication. The PDMS sputtering technique in particular allows profilometry measurement of PDMS surfaces without risk of damaging the profilometer …
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Ceramic microforming process
… This micromolding process takes advantage of clean room compatible techniques to create silicon etchings, which are used to create a silicone transfer mold. The silicone molds are used to make numerous sacrificial mold into which ceramic slurry is cast. The wax molds are sacrificed leaving …
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Output Characteristics and High-Speed Modulation of Composite -Resonator Vertical -Cavity Lasers
… of these devices is discussed, as well as the clean-room fabrication procedure for dual oxide-confined cavity CRVCLs and hybrid ion-implanted/oxide-confined devices. The dc characteristics are presented, including the light output versus current characteristics, differential slope efficiency, …
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Projeto, fabricação e ensaio de dispositivo microfluídico para separação de células sanguíneas baseado no efeito Zweifach-Fung
… in acrylic without the necessity of a clean-room and the microsseparations were molded in two different polymers: Urethane-Acriltato (UA) and polydimethylsiloxane (PDMS). Simulations were carried out in the characterization of the microsecarator: angles between the bifurcations, mean …
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Additive Manufacturing for Robust and Affordable Medical Devices
… cells can be patterning without the use of a clean room, thus lowering the entry-barrier for researchers to explore cell patterning. With the commercialization of 3D-printing an opportunity has arisen to transition life-saving technologies into more cost-effective versions of existing …
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A template modeling for an assembly control : jig design
… program, the intent being to eliminate the clean room area and ship all of the components of the ion implanter directly from the flow line to the customer, without the currently necessary step of a final assembly. In particular this work examines the correct alignment of the source chamber …
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A template modeling for an assembly control : the source chamber alignment
… program, the intent being to eliminate the clean room area and ship all of the components of the ion implanter directly from the flow line to the customer, without the currently necessary step of a final assembly prior to shipment. The purpose of the thesis is to identify a solution for one …
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A Case Study and Analysis of Cleanroom Energy Use
A plant has a cleanroom HVAC system which is known to be a large energy user. This study found that the current cleanroom operation is indeed wasteful, and stands to benefit from improved controls and operation protocols. Proper data collection is instrumental in understanding how the system is …
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DISORDER IN MATERIALS
… made on a Langmuir film balance in a class 100 clean room, The liquid compressed to solid transition pressure of the film was recorded against the mole fraction of the film. The interactions of the head groups is explained by Intermolecular forces and the orientation of the head groups in the …
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Implementation of the Quantum Hall Effect based precision resistance measurement system
… with Ohmic contacts was patterned using standard clean room procedures. Magnetotransport measurements at low temperatures, sub 200 mK were carried out on the device. The transverse and longitudinal resistances were obtained and plotted against the perpendicular magnetic field. Quantum Hall …
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Functionalization and fabrication of single-walled carbon nanotube-based chemiresistors for sensory applications
… does not require specialized facilities (e.g., clean room, thermal evaporator) and can be performed entirely on a desktop (with appropriate ventilation and safety precautions for handling nanomaterials). We also extended the abrasion method to detect anions such as fluoride (use to manufacture …
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