The Experts below are selected from a list of 831 Experts worldwide ranked by ideXlab platform
Seth Fraden - One of the best experts on this subject based on the ideXlab platform.
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rapid prototyping of cyclic olefin copolymer coc microfluidic devices
Sensors and Actuators B-chemical, 2017Co-Authors: Ali S Aghvami, Achini Opathalage, Zhengpu Zhang, Markus Ludwig, Michael Heymann, Michael Norton, Niya Wilkins, Seth FradenAbstract:Abstract We introduce a low-cost, high yield rapid fabrication method for casting COC microfluidic chips that is appropriate for academic labs and small companies. Devices are comprised of two molded pieces joined together to create a sealed device. The first piece contains the microfluidic features and the second contains the inlet and Outlet Manifold, a frame for rigidity and a viewing window. The microfluidic features are patterned using a PDMS mold that itself was replica-molded from a photoresist master. Dimensional stability of the microfluidics portion of the COC device is achieved by confining the PDMS mold in an aluminium frame. The mold for the lid is CNC milled from aluminium. Sealing the COC device is accomplished by timed immersion of the lid in a mixture of volatile and non-volatile solvents followed by application of heat and pressure. Surface treatment to render the device fluorophilic is performed using dopamine in assembled devices.
Michael Heymann - One of the best experts on this subject based on the ideXlab platform.
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rapid prototyping of cyclic olefin copolymer coc microfluidic devices
Sensors and Actuators B-chemical, 2017Co-Authors: Ali S Aghvami, Achini Opathalage, Zhengpu Zhang, Markus Ludwig, Michael Heymann, Michael Norton, Niya Wilkins, Seth FradenAbstract:Abstract We introduce a low-cost, high yield rapid fabrication method for casting COC microfluidic chips that is appropriate for academic labs and small companies. Devices are comprised of two molded pieces joined together to create a sealed device. The first piece contains the microfluidic features and the second contains the inlet and Outlet Manifold, a frame for rigidity and a viewing window. The microfluidic features are patterned using a PDMS mold that itself was replica-molded from a photoresist master. Dimensional stability of the microfluidics portion of the COC device is achieved by confining the PDMS mold in an aluminium frame. The mold for the lid is CNC milled from aluminium. Sealing the COC device is accomplished by timed immersion of the lid in a mixture of volatile and non-volatile solvents followed by application of heat and pressure. Surface treatment to render the device fluorophilic is performed using dopamine in assembled devices.
Shan-shan Li - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Reinforced Concrete Design for an Underground Outlet Manifold in Shanxi Yellow River Diversion Project
Rock Mechanics and Rock Engineering, 2003Co-Authors: Wei Zhong Chen, Shan-shan LiAbstract:In order to verify the design feasibility of the reinforced concrete lining of the Outlet Manifold in Shanxi Yellow River Diversion Project (YRDP), field investigations on rock mass deformability, in situ stress and hydraulic jacking measurements have been carried out. Based on the results obtained, 3-D FEM numerical analyses have been performed to calculate the stress distribution in a reinforced concrete lining under internal and external water pressure. Furthermore, the initial designed shape and steel ratio of concrete have been modified to satisfy the requirements for the limit crack width design criteria in China and decrease the tensile stress level in concrete. The new steel ratio of reinforced concrete has been calculated on the basis of the numerical results considering the modified shape of the Outlet Manifold. Both the owner and designer of YRDP have adopted the steel ratio of concrete in the working design and construction of the Outlet Manifold.
Ali S Aghvami - One of the best experts on this subject based on the ideXlab platform.
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rapid prototyping of cyclic olefin copolymer coc microfluidic devices
Sensors and Actuators B-chemical, 2017Co-Authors: Ali S Aghvami, Achini Opathalage, Zhengpu Zhang, Markus Ludwig, Michael Heymann, Michael Norton, Niya Wilkins, Seth FradenAbstract:Abstract We introduce a low-cost, high yield rapid fabrication method for casting COC microfluidic chips that is appropriate for academic labs and small companies. Devices are comprised of two molded pieces joined together to create a sealed device. The first piece contains the microfluidic features and the second contains the inlet and Outlet Manifold, a frame for rigidity and a viewing window. The microfluidic features are patterned using a PDMS mold that itself was replica-molded from a photoresist master. Dimensional stability of the microfluidics portion of the COC device is achieved by confining the PDMS mold in an aluminium frame. The mold for the lid is CNC milled from aluminium. Sealing the COC device is accomplished by timed immersion of the lid in a mixture of volatile and non-volatile solvents followed by application of heat and pressure. Surface treatment to render the device fluorophilic is performed using dopamine in assembled devices.
Zijing Lin - One of the best experts on this subject based on the ideXlab platform.
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a key geometric parameter for the flow uniformity in planar solid oxide fuel cell stacks
International Journal of Hydrogen Energy, 2009Co-Authors: Daifen Chen, Zijing LinAbstract:Intensive CFD calculations are performed for the flow distribution in planar solid oxide fuel cell (SOFC) stacks with different number of cells. The calculations are based on 3D models with realistic geometric and operational parameters. The effects of design parameters, such as the channel height and length, the height of the repeating cell unit and the Manifold width, on the flow uniformity are examined. The CFD results demonstrate that the ratio of the Outlet Manifold width to the inlet Manifold width (α) is a key design parameter that affects the flow uniformity. The physical origin for the effect of α on the flow distribution is discussed and a simplified 2D model with the critical details of the flow physics is developed. The 2D model provides quality result for the optimal value of α and is easy to use for the broad engineering society.
