Navigation Links
New adhesive device could let humans walk on walls
Date:2/1/2010

Could humans one day walk on walls, like Spider-Man? A palm-sized device invented at Cornell that uses water surface tension as an adhesive bond just might make it possible.

The rapid adhesion mechanism could lead to such applications as shoes or gloves that stick and unstick to walls, or Post-it-like notes that can bear loads, according to Paul Steen, professor of chemical and biomolecular engineering, who invented the device with Michael Vogel, a former postdoctoral associate.

The device is the result of inspiration drawn from a beetle native to Florida, which can adhere to a leaf with a force 100 times its own weight, yet also instantly unstick itself. Research behind the device is published online Feb. 1 in Proceedings of the National Academy of Sciences.

The device consists of a flat plate patterned with holes, each on the order of microns (one-millionth of a meter). A bottom plate holds a liquid reservoir, and in the middle is another porous layer. An electric field applied by a common 9-volt battery pumps water through the device and causes droplets to squeeze through the top layer. The surface tension of the exposed droplets makes the device grip another surface much the way two wet glass slides stick together.

"In our everyday experience, these forces are relatively weak," Steen said. "But if you make a lot of them and can control them, like the beetle does, you can get strong adhesion forces."

For example, one of the researchers' prototypes was made with about 1,000 300-micron-sized holes, and it can hold about 30 grams more than 70 paper clips. They found that as they scaled down the holes and packed more of them onto the device, the adhesion got stronger. They estimate, then, that a one-square-inch device with millions of 1-micron-sized holes could hold more than 15 pounds.

To turn the adhesion off, the electric field is simply reversed, and the water is pulled back through the pores, br
'/>"/>

Contact: Blaine Friedlander
bpf2@cornell.edu
607-254-8093
Cornell University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Spider web glue spins society toward new biobased adhesives
2. Improved adhesive for products like transparent tape could benefit biofuels economy
3. New American Chemical Society podcast: Tiny sea creature and a new medical adhesive
4. Novel NIST connector uses magnets for leak-free microfluidic devices
5. UT Southwestern patient first in North Texas to receive newest-generation heart failure device
6. AFOSRs basic research may lead to revolutionary new devices
7. Advanced Analogic Technologies Introduces Lowest-Power Load Switch Available for Biometric Security Devices
8. Harvard research team receives $10M NSF grant to develop small-scale mobile robotic devices
9. Music is the engine of new U-M lab-on-a-chip device
10. Stanford researchers publish comprehensive model for medical device development
11. Novel handheld device detects anthrax with outstanding accuracy and reliability
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/15/2014)... , Oct. 15, 2014   Neurotechnology , ... announced the availability of the VeriLook Surveillance ... 3.0 provides real-time biometric face identification using live ... surveillance cameras. The new version not only identifies ... people from objects while they are moving through ...
(Date:10/14/2014)... study published in Cancer Research shows SIRT6—a ... colon cancers—can promote the development of skin cancers by ... survival of sun-damaged skin cells. , Previously considered protective, ... called sirtuins that help regulate genomic stability and prevent ... helps repair DNA damage, which can lead to cancer. ...
(Date:10/14/2014)... ITHACA, N.Y. – Scientists have sequenced the house fly ... as one might expect from an insect that thrives ... research, published Oct. 14 in the journal Genome ... and biology and of how flies quickly adapt to ... , Adult house flies (Musca domestica) carry and transmit ...
Breaking Biology News(10 mins):VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2House fly genome reveals expanded immune system 2
... produce approximately 25 percent of the total catch by ... With such a substantial portion of the nations economy ... the Gulf of Mexico region it comes as ... scrutinized by researchers across the globe. While some recent ...
... the tanker Jessica, loaded with 150,000 gallons of fuel, struck ... one of the most precious, famous and fragile ecosystems on ... numbers of unique species of flora and fauna renowned through ... of evolution by natural selection. While scores of wildlife ...
... Mo. Craniosynostosis, the premature fusion of the skull, is ... the past several years, physicians have used two procedures to ... from ear to ear, strip back the scalp of the ... had fused. The other procedure required a small incision near ...
Cached Biology News:LSU researchers challenge analyses on sustainability of Gulf fisheries 2First wind turbines on Galapagos Islands will halve diesel imports, reduce risk of future oil spills 2First wind turbines on Galapagos Islands will halve diesel imports, reduce risk of future oil spills 3First wind turbines on Galapagos Islands will halve diesel imports, reduce risk of future oil spills 4Craniosynostosis minimally invasive surgery holds more promise than old procedure 2
(Date:10/22/2014)... YORK , Oct. 22, 2014 New ... in the in vitro diagnostic (IVD) test industry, especially ... Information. The healthcare market researcher listed more than 25 testing ... could be the future of IVD products. Kalorama details the ... The Worldwide Market for In Vitro Diagnostic Tests ...
(Date:10/22/2014)... (PRWEB) October 21, 2014 The North ... concerned market North America with analysis and forecast of ... 2013, and is expected to reach $623.6 million by ... 2018. , Browse through the TOC of the North ... of the in-depth analysis provided. This also provides a ...
(Date:10/22/2014)... (PRWEB) October 22, 2014 Currently ... Sartorius, A & D Weighing, Rice Lake, and ... Semi-Micro Balance . The Sartorius CPA Semi-Micro Balance ... affordable high-quality, precise, and user-friendly laboratory balance. , ... laboratory equipment, their laboratory balances are well known ...
(Date:10/22/2014)...   Synthetic Biologics, Inc. (NYSE MKT: SYN), ... infections and diseases, announced today that the U.S. Patent ... for a composition of matter patent application that covers ... SYN-004. This is Synthetic Biologics, first allowed patent application ... to the Company,s extensive C. difficile patent ...
Breaking Biology Technology:Report: Radical New IVD Test Approaches Key To Growth 2Report: Radical New IVD Test Approaches Key To Growth 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 2The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 4Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 4
... Corp. (TSX: HBP / Frankfurt: WKN 918864), ... Corp.,announces that at the Company,s Annual General Meeting ... the resolutions presented by,management, appointing KPMG LLP as ... Kay, Slawomir Majewski, and Gordon Lickrish as,directors, and ...
... Jan. 30 John Wagner, M.D., recognized as,a leader ... has joined,the team at CORD:USE Cord Blood Bank. Dr. ... cell biology will provide a,significant contribution to CORD:USE., ... member of our,distinguished team," says Edward Guindi, M.D., President ...
... NATICK, Mass., Jan. 30 Boston Scientific,Corporation (NYSE: ... the 2008 Merrill,Lynch Global Pharmaceutical, Biotechnology and Medical ... New York City., Paul LaViolette, Chief Operating ... 6, beginning at approximately 10:20,a.m. E.T. Sam Leno, ...
Cached Biology Technology:Helix BioPharma shareholders vote in favour of management 2CORD:USE Cord Blood Bank Announces the Addition of Dr. John Wagner, a Pioneer in the Use of Umbilical Cord Blood Stem Cells, to Its Scientific Advisory Board 2CORD:USE Cord Blood Bank Announces the Addition of Dr. John Wagner, a Pioneer in the Use of Umbilical Cord Blood Stem Cells, to Its Scientific Advisory Board 3Boston Scientific to Participate in Merrill Lynch Conference 2
Mouse MMP-24 (MT5-MMP) MAb (Clone 143908)...
Rabbit polyclonal to HMGB1 (rating: ****) ( Abpromise for all tested applications). entrezGeneID: 3146 SwissProtID: P09429...
Pooled normal sreum with 0.1% sodium azide as preservative...
Mouse CXCR3 Allophycocyanin MAb (Clone 220803)...
Biology Products: