Index Catalog // ScholarsArchive@OSU

Novel architecture for entrapment of elastomeric membranes in microfluidic systems

Creator:: Blackwell, Edward P.
Abstract:: This thesis presents a novel microlamination architecture that enables the large scale integration of valves into low cost micro energy and chemical systems via membrane entrapment. Polycarbonate layers embossed with microfluidic channels were bonded by ultrasonic welding of raised embossed protrusions that penetrate though the PDMS membranes. The bonding pressure...
Resource Type:: Masters Thesis
Full Text:: ................................................................ 106 F. Valve Performance Characterization

Establishing Thermally-Enhanced Edge Registration (TEER) as a feasible alignment technique for metallic microlaminated devices

Creator:: Thomas, Joseph S.
Abstract:: The paper describes a Thermally-Enhanced Edge Registration (TEER) technique for precision aligning large numbers of laminae in diffusion bonding processes. This technique is particularly relevant for the formation of micro heat exchangers and microreactors requiring highly paralleled microchannel arrays but is also being used to register other laminated devices with...
Resource Type:: Masters Thesis
Full Text:: D. Readings from the experiment 40 Appendix E. Effect of misalignment on warpage 44 Appendix F

Application of buckling behavior to evaluate and control shape variation in high-temperature microlamination

Creator:: Wattanutchariya, Wassanai
Abstract:: The miniaturization of energy, chemical and biological systems for distributed and portable applications, known as process intensification, is realized by the enhancement in heat and mass transfer performance within high surface-to-volume ratio microchannels. Fabrication of devices for process intensification is achieved in part by microlamination techniques. These techniques consist of...
Resource Type:: Dissertation
Full Text:: Evaluation of Channel Deviation Due to Fin Buckling 164 F Simpson Approximation for Calculation of Arc

Characterization of a diffusion soldering process for micro-technology-based energy and chemical systems manufacturing

Creator:: Gabriel, Michael A.
Abstract:: Several 316 stainless steel meso-scopic devices were made using a diffusion soldering process. Tensile strength and pressure drop of the devices were measured and metallurgical examinations were made of the joints. Continuous bonds were observed in the sample cross-section specimens. Strengths of the diffusion soldered joints were up to 56%...
Resource Type:: Masters Thesis
Full Text:: , representing Industrial Engineering f Industrial and Manufacturing Engineering Deano~ I understand that

Development of nickel aluminide (NiAl) microchannel array devices for high-temperature applications

Creator:: Kanlayasiri, Kannachai
Abstract:: The miniaturization of Microtechnology-based Energy, Chemical and Biological Systems (MECS) is made possible by the use of high aspect ratio microchannel arrays to increase the surface-area-to-volume ratio of the flow conduits within the devices, resulting in an improvement in the heat and mass transfer performance of the devices. However, advantages...
Resource Type:: Dissertation

Cooling rate limitations in the diffusion bonding of large microchannel arrays

Creator:: Lingam, Gopi K.
Abstract:: A significant barrier to the diffusion bonding of large (i.e. 600 mm) microchannel devices is the large capital investment required to setup production. This large capital investment extends from long heating and cooling cycles leading to poor production capacities. Empirical studies in industry have shown that cooling rate is limited...
Resource Type:: Masters Thesis

Application of controlled thermal expansion in diffusion bonding for the high-volume microlamination of MECS devices

Creator:: Pluess, Christoph
Abstract:: Diffusion bonding has been widely used within microlamination architectures for the fabrication of Micro Energy and Chemical Systems (MECS). MECS are microsystems with the ability to process bulk amounts of fluid within highly-parallel microchannel arrays capable of accelerated heat and mass transfer. Thus far, diffusion bonding of the microchannel arrays...
Resource Type:: Masters Thesis
Full Text:: .............................................................................. 131 F: Data Comparison Experiment

Development of a passive micro-ball valve

Creator:: Wangwatcharakul, Worawut
Abstract:: A novel design, material, and fabrication method are presented to fabricate a passive micro-ball valve. Microvalves are critical components in microflow control devices used to control the fluid flows in microchannels. These microflow control devices can be integrated with microsensors to form micro analysis systems. Glass/silicon-based fabrication is complicated and...
Resource Type:: Masters Thesis
Full Text:: 4 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 0.00002 2 0.00001 0.16667

The use of electrochemical micromachining for making a microfloat valve

Creator:: Park, Sang-Bin
Abstract:: Micromanufacturing consists of processes for producing structures, devices or systems with feature sizes measured in micrometers. Micromanufacturing began in the mid-1960's with microelectronics fabrication technology. In the 1980's, Micro-Electro-Mechanical Systems (MEMS) began to be developed, in which electrical and mechanical subsystems were integrated at small scales. More recently, Microtechnology-based Energy...
Resource Type:: Masters Thesis
Full Text:: . I wish to express my particular appreciation to Dr. Peter Martin, Dr. Dean Matson, Wendy Bennett

Development of self-registration features for the assembly of a microchannel hemodialyser

Creator:: Porter, Spencer D.
Abstract:: More than 1.2 million people worldwide require regular hemodialysis therapy to treat end stage renal failure. In the United States alone, there are 300,000 patients and the National Kidney Foundation predicts that this number will double in the next 10 years. Currently most dialysis patients receive treatment at a dialysis...
Resource Type:: Masters Thesis
Full Text:: $30.0 $40.0 $50.0 $60.0 0% 20% 40% 60% 80% 100% M e m b ra n e C o st f o r th e D e

ScholarsArchive@OSU

Novel architecture for entrapment of elastomeric membranes in microfluidic systems

Establishing Thermally-Enhanced Edge Registration (TEER) as a feasible alignment technique for metallic microlaminated devices

Application of buckling behavior to evaluate and control shape variation in high-temperature microlamination

Characterization of a diffusion soldering process for micro-technology-based energy and chemical systems manufacturing

Development of nickel aluminide (NiAl) microchannel array devices for high-temperature applications

Cooling rate limitations in the diffusion bonding of large microchannel arrays

Application of controlled thermal expansion in diffusion bonding for the high-volume microlamination of MECS devices

Development of a passive micro-ball valve

The use of electrochemical micromachining for making a microfloat valve

Development of self-registration features for the assembly of a microchannel hemodialyser

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