HOME >> BIOLOGY >> NEWS
MITs smart surface switches properties reversibly

CAMBRIDGE, Mass.--MIT engineers and colleagues from the University of California are reporting a unique design of a smart surface that can reversibly switch properties in response to an external stimulus. The work paves the way for systems that could, for example, release or absorb cells and chemicals from surfaces on demand.

In the Jan. 17 issue of Science, the researchers describe an example of their new approach in which they engineered a surface that can change from water-attracting to water-repelling with the application of a weak electric field. Switch the electrical potential of that field from positive to negative and the surface reverts to its initial affinity for water.

The general technique, on which the group has filed for a patent, could also be applied to the dynamic control of other surface characteristics such as adhesion, friction and biocompatibility. We started with a fundamental system to prove that the overall concept of reversibly modifying a surface via conformational transitions works, said Thanh-Nga Tran, a graduate student in the Harvard-MIT Division of Health Sciences and Technology (HST) and the Department of Chemical Engineering.

This opens the door to a variety of applications, including novel drug-delivery systems and smart templates for the bioseparation of one molecule from another, said Robert Langer, MITs Germeshausen Professor of Chemical and Biomedical Engineering and leader of the work. Langer has appointments in chemical engineering, HST and MITs Biological Engineering Division.

This is the first time to our knowledge that anyone has created a truly reversible switch of a surfaces property exploiting monomolecular layers, said Joerg Lahann, a Postdoctoral Associate in CE. As a result, we believe this study lays the fundamental groundwork for a new paradigm in surface engineering that may be of considerable significance in materials science, biology, and medicine.

In addition to L
'"/>

Contact: Elizabeth Thomson
thomson@mit.edu
617-258-5402
Massachusetts Institute of Technology
16-Jan-2003


Page: 1 2 3

Related biology news :

1. Study of flu patients reveals virus outsmarting key drug
2. Muscles are smarter than you think
3. Purdue scientists finding ways to outsmart crop-damaging bugs
4. With natures help, a better vision system for smart weapons
5. UCSD researchers fabricate tiny smart dust particles
6. Scientists at the Scripps Research Institute design gene-tipped tumor regressor smartbombs
7. Researchers developing technology to outsmart metastasized cancers
8. How did we get so smart? Study sheds light on evolution of the brain
9. Pharmaceutical smart bomb targets cancer cells
10. Female birds choose best singers to have smarter offspring
11. Prosthetic limb to be controlled by microchip: Agreement signed to create smart leg

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: MITs smart surface switches properties reversibly

(Date:10/14/2014)... – Like discriminating thieves, prostate cancer tumors scavenge and ... body. But such avarice may be a fatal weakness. ... way to kill prostate cancer cells by delivering a ... destroys the diseased cells brimming with the mineral, leaving ... two drugs already commercially available for other uses, could ...
(Date:10/14/2014)... years since T. rex took its last ... is breathing life back into dinosaurs using high-powered computer ... has important implications for how dinosaurs used their noses ... of smell and cool their brains. , "Dinosaurs ... Jason Bourke, lead author of the new study published ...
(Date:10/14/2014)... One of the planet,s leading questions is how to ... increasingly variable climate. The Food and Agriculture Organization of ... 70% over the next 40 years to feed a ... of the necessary rise in food production. Plants—grains, ... by supporting livestock. Current research must tap into ...
Breaking Biology News(10 mins):Prostate cancer's penchant for copper may be a fatal flaw 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 3Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3
(Date:10/22/2014)... and HONG KONG , Oct. 22, ... therapeutics enterprise, announced today that rare disease expert ... vice president, research. Dr. McKew brings more than two ... positions at the National Institutes of Health, Wyeth Research ... Wyeth). Dr. McKew will lead aTyr,s efforts to expand and ...
(Date:10/20/2014)... 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") ... orders to $5.8 million and provides a good start to Q4.  ... North America and one in the Middle ... at record levels," said Peter Bruijns , President & CEO. ... of Q3 than they have been for any complete year since ...
(Date:10/20/2014)... Rochelle, Virginia (PRWEB) October 20, 2014 ... of NDA Partners LLC, announced today that Ellen ... and legal support for the pharmaceutical industry, has ... and manager of its legal services practice. ... reports and expert witness and testimony, to top ...
(Date:10/19/2014)... The Asia-Pacific Bromine Market report defines and ... and forecast of revenue. , Browse through the ... to get an idea of the in-depth analysis ... segmentation in the Asia-Pacific bromine market, and is ... http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , Bromine is a volatile ...
Breaking Biology Technology:aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3
Cached News: