Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Stuck Up

Noshir Pesika developed polymer-based dry adhesive structures that mimic the adhesive system on the feet of his gecko, Nikki. (Photos by Paula Burch-Celentano)
Noshir Pesika developed polymer-based dry adhesive structures that mimic the adhesive system on the feet of his gecko, Nikki. (Photos by Paula Burch-Celentano)

Abstract:
She's four years old, lives in a lab in the Boggs building and is among a family of reptiles inspiring development of a new reusable dry adhesive. She's a Tokay gecko named Nikki.

"We're working to develop a synthetic dry adhesive following the same science behind what nature has evolved," says Noshir Pesika, an assistant professor of chemical and biomolecular engineering.

By Belinda Lacoste

Stuck Up

New Orleans, LA | Posted on May 26th, 2010

When scientists began studying the gecko adhesive system, they discovered that geckos stick not by suction, or capillary forces, or by sticky substances on their toes, but by weak electromagnetic forces called van der Waals interactions.

It is the force of millions of nanoscale "split hairs" contacting a surface at once that gives the gecko a grip so strong it can hold its own body weight by a single toe, Pesika says.

Many research groups are fabricating structures of hair-like fibers attempting to replicate the gecko adhesive system.

In his laboratory, Pesika developed polymer-based dry adhesive structures that mimic the gecko adhesive system.

Along with collaborators at the University of California-Santa Barbara and Lewis & Clark College, Pesika has developed an innovative and simple technique to incorporate tilt in the hairy fibers. The angled fibers more closely duplicate the natural curve of the gecko hairs, which Pesika says exploits friction forces to enhance adhesion.

"We have structures that are already working," Pesika says. "Our aim is to further improve adhesion and simplify the processing scheme to make the technology attractive to an industrial market."

Pesika anticipates that dry adhesives may be used as self-stick notes and page tabs that would not leave a residue, as bandages that would not fall off when wet, and possibly as adhesive pads on astronaut's shoes.

They have an advantage over traditional "sticky" adhesives, Pesika says, because they are a solid material that would not collect dirt and would still adhere in water or in space, where glue would evaporate.

Belinda Lacoste is a student studying journalism in the School of Continuing Studies and a staff member who writes for the School of Science and Engineering.

####

For more information, please click here

Contacts:
Belinda Lacoste

Copyright © Tulane University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Clues to inner atomic life from subtle light-emission shifts: Hyperfine structure of light absorption by short-lived cadmium atom isotopes reveals characteristics of the nucleus that matter for high precision detection methods July 3rd, 2015

Pioneering Southampton scientist awarded prestigious physics medal July 3rd, 2015

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

Discovery of nanotubes offers new clues about cell-to-cell communication July 2nd, 2015

Possible Futures

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

Harris & Harris Group Portfolio Company D-Wave Systems Announces 1,000 Qubit Processor and is Discussed in the Economist June 23rd, 2015

Global Nanoclays Market Analysis, Size, Growth, Trends And Segment Forecasts, 2015 To 2022: Grand View Research, Inc June 15th, 2015

Healthcare Nanotechnology (Nanomedicine) Market Size To 2020 June 5th, 2015

Academic/Education

Oxford Instruments’ TritonXL Cryofree dilution refrigerator selected for the Oxford NQIT Quantum Technology Hub project June 30th, 2015

Rice University boots up powerful microscopes: New electron microscopes will capture images at subnanometer resolution June 29th, 2015

Six top Catalan research centres constitute ‘The Barcelona Institute of Science and Technology’ to pursue a joint scientific endeavour June 27th, 2015

Lancaster University revolutionary quantum technology research receives funding boost June 22nd, 2015

Announcements

Clues to inner atomic life from subtle light-emission shifts: Hyperfine structure of light absorption by short-lived cadmium atom isotopes reveals characteristics of the nucleus that matter for high precision detection methods July 3rd, 2015

Pioneering Southampton scientist awarded prestigious physics medal July 3rd, 2015

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

NIST Group Maps Distribution of Carbon Nanotubes in Composite Materials July 2nd, 2015

Research partnerships

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

Producing spin-entangled electrons July 2nd, 2015

Harris & Harris Group Portfolio Company, AgBiome, Announces Partnership to Accelerate the Discovery of Next Generation Insect-Resistant Crops July 1st, 2015

Leti Announces Launch of First European Nanomedicine Characterisation Laboratory: Project Combines Expertise of 9 Partners in 8 Countries to Foster Nanomedicine Innovation and Facilitate Regulatory Approval July 1st, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project