text-only page produced automatically by LIFT Text Transcoder Skip all navigation and go to page contentSkip top navigation and go to directorate navigationSkip top navigation and go to page navigation
National Science Foundation
News
design element
News
News From the Field
For the News Media
Special Reports
Research Overviews
NSF-Wide Investments
Speeches & Lectures
NSF Current Newsletter
Multimedia Gallery
News Archive
News by Research Area
Arctic & Antarctic
Astronomy & Space
Biology
Chemistry & Materials
Computing
Earth & Environment
Education
Engineering
Mathematics
Nanoscience
People & Society
Physics
 

Email this pagePrint this page


Press Release 10-171
Cilia Revolution

Man-made, hair-like structures poised to change industry paradigms

Newly developed artificial cilia respond to changes in heat, electromagnetic radiation and acidity.

Newly developed artificial cilia respond to changes in heat, electromagnetic radiation and acidity.
Credit and Larger Version

September 23, 2010

University of Southern Mississippi scientists recently imitated Mother Nature by developing, for the first time, a new, skinny-molecule-based material that resembles cilia, the tiny, hair-like structures through which organisms derive smell, vision, hearing and fluid flow.

While the new material isn't exactly like cilia, it responds to thermal, chemical, and electromagnetic stimulation, allowing researchers to control it and opening unlimited possibilities for future use.

This finding is published in today's edition of the journal Advanced Functional Materials. The National Science Foundation's Division of Materials Research supports Southern Miss's Materials Research Science and Engineering Center for Response-Driven Polymeric Materials, where the research took place.

Cilia are wavy, hair-like structures that extend outward from the surfaces of various organisms such as human skin. People, animals and single-celled organisms use them to sense the environment, gather information about it and adapt to it.

Scientists long imagined what could be done if they could engineer cilia for other organic and nonorganic uses. But creating them solely belonged to the life nurturing processes of nature, until now. Marek Urban, Southern Miss professor of polymer science and engineering, along with a team of researchers, developed a new thin copolymer film with whisker-like formations that mimics Mother Nature.

"Our interest is in developing materials with multi-level responses at various length and time scales," said Urban. "I believe this is the future of science and engineering that will drive future technologies."

Employing a process used for years to produce latex paints, the researchers formed thin copolymer-based films whose chemical composition makes possible filaments that have built-in molecular sensors that respond to temperature, acidity and ultraviolet radiation. Moreover, the filaments are capable of locomotion, waving, shrinking and expanding in response to stimuli. They also are capable of fluorescence, that is, absorbing and emitting light and changing colors as a reaction to ultraviolet rays.

The ability to engineer this cilia-like biosensor may give scientists an ability to, for example, test for the presence of toxins, oxygen or even lack of oxygen in an environment. Future opportunities for sensor use might include developing new sensors for testing glucose levels, using the sensors for drug testing, or testing for air or water safety.

There is no limit to dreaming up applications for such a material, said Urban. "Many new ideas are being generated as we speak, but it is too early to reveal them."

Immediate next steps will be to team up engineers to make use of the materials.

Former Southern Miss graduate students Fang Liu, who now works with Proctor and Gamble, and research associate Dhanya Ramachandran contributed to this research.

-NSF-

Media Contacts
Bobbie Mixon, NSF, (703) 292-8485, bmixon@nsf.gov

Program Contacts
Thomas P. Rieker, NSF, (703) 292-4914, trieker@nsf.gov

Principal Investigators
Marek W. Urban, The University of Southern Mississippi, (601) 266-6868, marek.urban@usm.edu

Related Websites
Advanced Functional Materials: Colloidal Films That Mimic Cilia: http://onlinelibrary.wiley.com/doi/10.1002/adfm.201000379/pdf

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2014, its budget is $7.2 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives about 50,000 competitive requests for funding, and makes about 11,500 new funding awards. NSF also awards about $593 million in professional and service contracts yearly.

 Get News Updates by Email 

Useful NSF Web Sites:
NSF Home Page: http://www.nsf.gov
NSF News: http://www.nsf.gov/news/
For the News Media: http://www.nsf.gov/news/newsroom.jsp
Science and Engineering Statistics: http://www.nsf.gov/statistics/
Awards Searches: http://www.nsf.gov/awardsearch/

 

border=0/


Email this pagePrint this page
Back to Top of page