Massachusetts Institute of Technology
Sign in

Switchable Surfaces

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.

Comments (0)

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.

MIT Video Productions

MIT Video Productions

Category: Education | Updated over 7 years ago

January 22, 2008 15:47
All Rights Reserved (What is this?)
Additional Files

22143 times

More from MIT Video Productions

MIT Red Tailed Hawks (Spring, 2004)

MIT Red Tailed Hawks (Spring, 2004)

Added over 8 years ago | 00:05:03 | 17313 views

Spheres - Synchronized Position Hold Engage Re-orient Experimental Satellites

Spheres - Synchronized Position Hol...

Added almost 8 years ago | 00:03:46 | 21175 views

Interplanetary Space Logistics: Enabling New Frontiers

Interplanetary Space Logistics: Ena...

Added 8 years ago | 00:07:14 | 55358 views



Added almost 8 years ago | 00:03:18 | 19105 views

Robotic Gripper with Phantom Sensable Technologies

Robotic Gripper with Phantom Sensab...

Added almost 8 years ago | 00:04:06 | 28043 views

Waterproof Everything

Waterproof Everything

Added almost 8 years ago | 00:03:13 | 17491 views