Title :
Chemically responsive protein-photoresist hybrid actuator
Author :
Serien, Daniela ; Takeuchi, Shoji
Author_Institution :
Center for Int. Res. on Integrative Biomed. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
We report the multiphoton fabrication of hybrid microstructures of photoresist and chemically responsive protein hydrogel for microactuation, such as a lever and a rotary stepper. By two-step direct laser writing (DLW) technology, we combine chemically responsive protein hydrogel with mechanical robust photoresist into pH-responsive hybrid actuators that contain only biocompatible materials. The fabrication can be performed separately, without adding to the complexity of device fabrication. We observe micrometer-range motion of the photoresist components. These microactuators may also serve as a pH- or salt-concentration-sensor that measure and interact with their environment by their motion as immediate feedback.
Keywords :
biochemistry; chemical sensors; hydrogels; microactuators; microfabrication; molecular biophysics; multiphoton processes; pH; photoresists; proteins; sodium compounds; NaCl; biocompatible materials; chemically responsive protein-photoresist hybrid microactuator; lever; micrometer-range motion; multiphoton fabrication; pH-concentration-sensor; rotary stepper; salt-concentration-sensor; two-step direct laser writing technology; Actuators; Chemicals; Fabrication; Microstructure; Proteins; Resists; Robustness;
Conference_Titel :
Micro Electro Mechanical Systems (MEMS), 2015 28th IEEE International Conference on
Conference_Location :
Estoril
DOI :
10.1109/MEMSYS.2015.7050993