Application of Vertical Micororeactor Stack with Polystylene Microbeads to Immuno Assay
This paper proposes a vertical microreactor stack, a new concept of the microreactor, using vertical fluid flow operation and multifunctional fluid filters and vertically stacked reservoirs. The vertical fluid flow operation utilizes the surface tension of the liquid/ gas interface and pneumatic pressure to control the liquid behavior in vertical microreactor stack. The functions as microvalve, microcahnnel and micromixer of the fluid filter are estimated by computational fluid dynamics (CFD) simulation and experiments. The enzyme linked immuno-solvent assay is demonstrated by using vertical microreactor stack and the calibration curve was successfully taken.
Large area and wide dimension range x-ray lithography for lithographite, galvanoformung, and abformung process using energy variable synchrotron radiation
We developed an x-ray lithography system for the “lithographite, galvanoformung, and abformung” process using synchrotron radiation at the NewSUBARU facility of the University of Hyogo, Hyogo, Japan. The x-ray lithography system can utilize two different energy regions: one is a high-energy region: from 2 to 12 keV, and the other is a low-energy region from 1 to 2 keV. Each energy region can be selected in accordance with the size and shape of the desired microstructures. Large-area patterning across an A4-size area was successfully performed with a highly uniform pattern thickness. Furthermore, high-aspect-ratio patterning using a high-x-ray-energy region was also achieved using this x-ray lithography system.
Dot Array Microoptics for Lighting Panel Using Synchrotron Radiation Lithography
The lighting-panel (LP) for liquid crystal displays (LCDs), which leads the light from the illuminating light emitting diode (LED) to the front panel, is one of the key parts of personal digital assistants (PDAs) for decreasing the power consumption. We developed a high luminosity LP for LCDs with accurate three dimensional microstructures using synchrotron radiation lithography, and their optical properties were also evaluated using the luminosity distribution measurement. The mean luminosity and the luminescence efficiency were more than 800 cd/m2. It is notable, from the simulation results, that the mean luminosity for the LP with trapezoidal cylindrical dots increases to 1.5 times higher than that of the LP with cylindrical dots. Qualitatively, the measured result corresponds well with the simulated results.