青色レーザーを用いた高精細マイクロ光造形システムの開発

抄録

In this study, a high-resolution microstereolithography system using a blue laser has been developed and used for producing several kinds of 3D microstructures such as microneeles and microchannels. To realize high-speed, high-resolution 3D microfabrication, two types of photopolymers were developed. One is a resin mixed with an ultraviolet (UV) absorber. This resin is suitable for high-speed fabrication of a high-aspect-ratio structure. The other is a resin mixed with a blue light absorber, which is suitable for fabricating a model having a complicated 3D shape. It was demonstrated that the resin containg the UV absorber could provide ultrafine line structure whose linewidth was around 3 μm. The resin was also used for making a high-aspect-ratio microneedle with a lenth of 2 mm in a short time. The resin containing the blue light absorber was utilized for making a 3D microchannel. The flexible 3D fabrication using two kinds of photopolymers in the microstereolithography system using the blue laser will be a powerful tool for various kinds of applications such as lab-on-a-chip, microelectronics and medicine.