著者
生田 幸士
出版者
日本ロボット学会
雑誌
日本ロボット学会誌 (ISSN:02891824)
巻号頁・発行日
vol.9, no.4, pp.507-511, 1991-08-15 (Released:2010-08-25)
参考文献数
11
被引用文献数
2 4
著者
安井 真人 池内 真志 生田 幸士
出版者
一般社団法人 日本機械学会
雑誌
ロボティクス・メカトロニクス講演会講演概要集
巻号頁・発行日
vol.2011, pp._1A2-H09_1-_1A2-H09_4, 2011

When a magnetic micro-screw moves in water, it is difficult to go up and to control a magnetic microscrew three-dimensionally because of gravity. Therefore, it is important to control density of a microscrew. Therefore, we have developed magnetically photo-curable (MPC) polymer with hollow microcapsules. This polymer enables us to fabricate a three-dimensional magnetic microstructure whose density is controlled. Since we can control density of this resin, buoyancy of microstructure is able to cancel the effect of gravity. To show neutral buoyancy of the magnetic microscrew, we compared vertical swimming velocity of the microscrew with horizontal velocity. This experimental result shows that vertical velocity coincides with horizontal velocity. This result demonstrates that we have succeeded in fabricating a magnetic microscrew and controlling the microscrew three-dimensionally in water.
著者
池内 真志 生田 幸士
出版者
Japanese Society for Medical and Biological Engineering
雑誌
生体医工学 (ISSN:1347443X)
巻号頁・発行日
vol.43, no.4, pp.646-652, 2005

The authors of this letter propose a novel "multi-layer hybrid scaffold" consisting of artificial blood capillary networks and cell-containing hydrogel for tissue engineering. The artificial blood capillary network was fabricated using a Membrane Micro Embossing (MeME) process, a unique, newly developed microfabrication process capable of fabricating freestanding thin polymer membrane micro-channels with both simplicity and high precision. With this process, a thin thermoplastic polymer membrane was placed on a deformable support substrate and embossed to fit 3D structures on a master mold by backpressure from the support. A one step heat-sealing method was used to successfully fabricate a highly branched "membrane micro-channel network" of biodegradable poly-lacticacid (PLA) micro-channels measuring 50 μm in width, 50 μm in depth, and 5 μm in wall thickness. The biocompatibility of the fabricated micro-channel was confirmed by culturing human umbilical vascular endothelial cells (HUVEC) on the micro-channel. This technology will provide a useful method for regenerating large organs in the future.
著者
生田 幸士
出版者
バイオメカニズム学会
雑誌
バイオメカニズム学会誌 (ISSN:02850885)
巻号頁・発行日
vol.32, no.3, pp.141-146, 2008 (Released:2010-12-13)
参考文献数
21

新原理と新概念にこだわったマイクロ・ナノマシン技術と,数ミクロンの細胞から深部臓器まで,異なるスケールの生体を対象とした未来医用ロボティクスの世界を述べる.光で造り,光で動かすナノマシンについては,素材,作製手法,駆動制御からリアルタイムの力計測まで完成し,今や細胞の力学特性も精密に測定できるようになった.さらに,化学 ICと名づけたマイクロプラントや生分解性の人工毛細血管デバイスまで到達した.