A self-swimming microbial robot using microfabricated nanofibrous hydrogel
| Autor: | Norihisa Miki, Kazuhiko Higashi |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Microelectromechanical systems
Motile bacteria Materials science Microfluidics Metals and Alloys Nanotechnology Condensed Matter Physics Living body Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Bacterial cellulose Materials Chemistry Electrical and Electronic Engineering Instrumentation Microfabrication |
| Zdroj: | Sensors and Actuators B: Chemical. 202:301-306 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2014.05.068 |
| Popis: | Micro-robots are of extreme interest for a wide range of applications. Examples include therapeutic applications inside of a living body and automatic untethered systems which work in microfluidic devices. Recently, flagellated bacteria have been employed as microactuators for the micro-robots. Here, we introduce bacterial cellulose (BC) as an effective support carrier for immobilizing flagellated bacteria. Experimental study revealed that the superiority of BC over conventional MEMS materials in immobilization. Next, a new microfabrication technique for forming conical-shaped BC is proposed. This technique achieved the untethered microstructure of BC with a help of oxygen concentration gradient. Finally, we demonstrate motile bacteria were successfully immobilized onto the BC structure to form a microbial-robot, which swam in culture media at an average speed of 4.8 μm/s. |
| Databáze: | OpenAIRE |
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