Daisuke Hiramaru

Development of a Three Dimensional Passive Lamination Micromixer

In this paper, we propose a three-dimentional multi-layered flow generator fabricated by inclined UV lithography to expose a single layerded photoresist coated on a patterned mask. To confirm the validity of the proposed generator, we applied the three-layered flow generator as a passive lamination micromixer. By comparing two types of fabricated micromixers, the three-layered micromixer achieves 1.64 times faster mixing rate than a conventional Y-shaped one due to the shortening of the diffusion length. The fabricated flow generator can be applied for a passive micromixer with laminated and/or secondary flows, a sheath flow generator, and a multi-layered emulsion system.Copyright

Thermal Driven Metastructural Reconfigurable Millimeter Wave Antenna

This paper shows a novel reconfigurable antenna applied by MEMS technique. We design and demonstrate a novel thermal driven meta-structural reconfigurable millimeter wave antenna. As far as we know, there is no reconfigurable antenna for millimeter wave by micro heater.

Genetic Extended-Fiber Network (GEN) Stretched Over Microbridges Fabricated by Single-Mask Inclined UV Lithography

In this study, we propose a Genetic Extended-fiber Network (GEN) separately stretched over microbridges for DNA fiber applications. The microbridges are rapidly and easily fabricated by directly spin-coating a thick negative photoresist on a metal mask patterned glass substrate and exposing it twice from the backside of the substrate for two different exposure angles. The GEN constructed over microbridge array by centrifugal stretching can achieve high throughput stretching-and-positioning of DNA fibers and individually accessible platform for DNA fibers, on which spatial relationships of DNA fibers can be quantitatively analyzed by accurate compartmentalization.