Professor Robert Langer, MIT's Germeshausen Professor of Chemical and Biomedical Engineering, and colleagues at the Institute for Soldier Nanotechnologies are working on a unique design of a "smart surface" that can reversibly switch properties in response to an external stimulus. The new switchable surface essentially consists of a forest of molecules only a billionth of a meter tall, engineered to stand at a precise distance from each other. When a positive electrical potential is applied, the top bends down to reveal another surface. Reverse the electrical potential, and the molecules straighten to their full height.
The work paves the way for systems that could, for example, release or absorb cells and chemicals from surfaces on demand. Future work will include developing surfaces that have different switchable properties as well as tailoring the proof-of-concept system for different applications.
It looks like no one has posted a comment yet. You can be the first!
You need to log in, in order to post comments.
More from MIT Video Productions
Added over 8 years ago | 00:08:36 | 52791 views
Added 9 years ago | 00:02:27 | 28256 views
Added over 9 years ago | 00:00:19 | 10814 views
Added over 6 years ago | 01:15:00 | 11583 views
Added over 8 years ago | 00:04:29 | 29645 views
Added over 8 years ago | 00:07:02 | 21660 views