Nanoscale Biomimetic Materials for Seosors and Actuators
2022.04.15- Date
- 2022-04-07 16:00:00
- Lecturer
- Prof. Byung Yang Lee
- Venue
- 110-N101
- Contact
- Prof. Hoon Eui Jeong (hoonejeong@unist.ac.kr)
Nanoscale Biomimetic Materials for Sensor and Actuator Applications
Byung Yang Lee
School of Mechanical Engineering, Korea University, Seoul, Korea
Nanoscale materials have high surface-volume ratio, making them ideal building blocks for sensors and actuators. In particular, starting from very few and simple building blocks such as collagen fibrils, nature easily builds hierarchical and complex supramolecular structures which are often hard to imitate with current top-down microfabrication techniques. Recently, with the development of diverse assembly methods of nanomaterials, we can obtain biomimetic structures with diverse optical, mechanical, and electrical properties using bottom-up approaches. Sometimes, the properties of such biomimetic materials, when exposed to certain physical or chemical stimuli, can change enough to be utilized for sensor or actuator applications. For example, some filamentous viruses can be assembled into colorful films on solid substrates, the colors of which can change when exposed to organic solvents and volatile organic compounds. Also, these same films, when applied with mechanical pressure, can exhibit piezoelectric properties, where mechanical pressure can be transduced to electrical signal, opening a possibility of using these structures as mechanical force sensors. In this talk, we will discuss on the current state of applying nanoscale materials for sensor and actuator application.
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