| Summary: | 碩士 === 中臺科技大學 === 醫學工程暨材料研究所 === 98 === Lab-on-a-chip (LOC) is an advanced technology that has emerged recently. It can be used to carry out a wide range application of bio- medical inspection with the characteristics of simple, fast and accurate. The key techniques of LOC consist of micro sensors, micro-mechanical power sources and the micro devices which can drive fluid flow. These micro devices need precision manufacturing skills to attain the demand of an increasingly complicated function.
In this study, we introduce the two-photon polymerization (TPP) micro-fabrication technique. This technique is utilized to fabricate the micro devices, such as the Archimedes-based micro-rotors and lever- based micro-sensors, with the specific power source-optical tweezers to drive the structures. The micro-rotors are driven automatically by optical tweezers. The rotation speed can be adjusted by changing the laser power of optical tweezers. Furthermore, we investigated the performance of different types of rotors. The experimental results indicate that the higher blade numbers with fewer screws will obtain higher rotation speed. In addition, we designed three types of micro-levers which swung by optical tweezers and combined with a spring to develop brand new lever type micro-sensors. These brand new micro-sensors with different ratios of long arm and short arm are able to raise the acting force or displacement.
In summary, we integrated the techniques of TPP and laser tweezers to develop the optical-driven micro-machinery devices. The results provide a solution for the applications of Lab-on-a-chip.
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