HOME >> BIOLOGY >> NEWS
UC Berkeley study shows gecko foot hairs are amazing dry adhesives

Geckos are able to scurry up walls and across ceilings thanks to two million microscopic hairs on their toes that glom onto surfaces in a way that has given engineers an idea for a novel synthetic adhesive that is both dry and self-cleaning.

In a paper in this week's issue of Nature, University of California, Berkeley, biologist Robert J. Full, Lewis and Clark College biologist Kellar Autumn and their colleagues report the first measurement of the forces that these hairs, or setae (see' tee), exert on a surface.

Working with the "Cadillac" of the gecko world, a Tokay gecko (Gekko gecko) native to Southeast Asia, the team of biologists and engineers showed that the combined adhesive force of all the tiny hairs lining the gecko's toes is 10 times greater than the maximum force reportedly needed to pull a live gecko off the wall. Geckos apparently use only a fraction of the hairs at one time, though they have been known to hang from the ceiling by one toe.

The key seems to be the hundreds to thousands of tiny pads at the tip of each hair. These pads, called spatulae, measure only about ten millionths of an inch across. Yet, they get so close to the surface that weak interactions between molecules in the pad and molecules in the surface become significant. The combined attraction of a billion pads is a thousand times more than the gecko needs to hang on the wall.

"These billion spatulae, which look like broccoli on the tips of the hairs, are outstanding adhesives," said Full, a professor of integrative biology and head of the Poly-PEDAL (Performance, Energetics, Dynamics, Animal Locomotion) Laboratory at UC Berkeley. "Geckos have developed an amazing way of walking that rolls these hairs onto the surface, and then peels them off again, just like tape. But it's better than tape."

"Getting yourself to stick isn't really that difficult, it's getting off that is the problem," noted Autumn, a former postdoctoral student in Full's laboratory who now is
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
6-Jun-2000


Page: 1 2 3 4

Related biology news :

1. Landmark gene agreement announced by Samoan government and UC Berkeley for anti-AIDS drug Prostratin
2. Landmark agreement between Samoa and UC Berkeley could help search for AIDS cure
3. Berkeley Lab soil scientist Margaret Torn receives Presidential Early Career Award
4. MSU group reviews Berkeley venture into brave new science funding world
5. UC Berkeley museum biologists to repeat 85-year-old Yosemite National Park wildlife survey
6. Berkeley scientists create first 3-D map of protein universe
7. UC Berkeley scientists detail neural circuit that lets eye detect directional motion
8. UC Berkeley, Joint Genome Institute target chloroplasts for clues to green plant evolution
9. Your brain is teaching your nose new tricks, say UC Berkeley researchers
10. UC Berkeley researchers are developing a microsized microscope that can peek inside living cells
11. Dietary supplements make old rats youthful, may help rejuvenate aging humans, according to UC Berkeley study

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Berkeley study shows gecko foot hairs are amazing dry adhesives

(Date:4/10/2015)... 10, 2015 Research and Markets ... "Security Competitive Profiles - NEC" report to ... NEC will continue to supply a range of ... with a company focus on the development of a ... Winning opportunities in the Asia-Pacific ...
(Date:4/2/2015)... 2, 2015 In the ... far outperforms the strongest competitors, showing outstanding performance ... the system is capable of a throughput of ... up to be ten times faster than most ... performance.      (Photo: http://photos.prnewswire.com/prnh/20150402/738673-a ...
(Date:4/1/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... mobile commerce market, announces the second shipment of a ... early access pre-order customers. Feedback from ... including Walmart, Target, AT&T, Dunkin, Donuts, Stop & Shop ... all outlets and very easy to use. Several users ...
Breaking Biology News(10 mins):NEC Security Competitive Profile 2015 2DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 2DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4
(Date:4/16/2015)... April 16, 2015 Cytokinetics, Incorporated (Nasdaq: ... first quarter results on Thursday, April 30, 2015 at ... management will host a conference call at 4:30 PM ... the company’s outlook for the future. , The conference ... from the homepage and in the Investor Relations section ...
(Date:4/16/2015)... Proove Biosciences , Inc. is ... Contest for the 2015 BIO International Convention. Hosted ... International Convention will take place June 15-18 at the ... of BIO contest, industry leaders will be voting for ... conference. The community voting period began on April 14, ...
(Date:4/16/2015)... (PRWEB) April 16, 2015 Regis Technologies ... American Association for Cancer Research (AACR) annual meeting. Regis ... Convention Center, starting Saturday, April 18, in Philadelphia and ... claim to title of the oldest and largest organization ... fellowships and grants, and partners with survivors to promote ...
(Date:4/16/2015)... (PRWEB) April 16, 2015 ... at Charlotte (UNC Charlotte) spin-out company, announced today ... Cooper, Ph.D., M.D., as Chief Operating Officer (COO). ... of experience in developing clinical diagnostic and biotechnology ... infectious disease. , Cooper’s extensive career transcends the ...
Breaking Biology Technology:Cytokinetics to Announce First Quarter Results on April 30, 2015 2Cytokinetics to Announce First Quarter Results on April 30, 2015 3Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 2Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 3Regis Technologies Joins American Association for Cancer Research Annual Meeting 2OncoTAb Names Dr. David L. Cooper as COO 2
Cached News: