Massachusetts Institute of Technology
Sign in | Create Account

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. If you don’t have an account yet, sign up now!

MIT Video Productions

MIT Video Productions

Category: Education | Updated 1 month ago

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


Viewed
21476 times

More from MIT Video Productions

2.670 An Introduction to DC Motors

2.670 An Introduction to DC Motors

Added over 2 years ago | 00:06:10 | 1465 views

Waterproof Everything

Waterproof Everything

Added 7 years ago | 00:03:13 | 16208 views

Hack on Building 10 short

Hack on Building 10 short

Added almost 8 years ago | 00:00:20 | 9364 views

MANUS VNR

MANUS VNR

Added almost 8 years ago | 00:05:03 | 24049 views

Parade

Parade

Added almost 8 years ago | 00:04:16 | 10061 views

Robocopter Flies Over MIT Campus

Robocopter Flies Over MIT Campus

Added almost 8 years ago | 00:01:35 | 14755 views