Navigation Links
How stick insects honed friction to grip without sticking

s on 'contact area', the amount of close contact between surfaces. In rigid materials, such as steel, even the tiniest amount of surface roughness means there is actually relatively little 'contact area' when pressed against other surfaces - so any amount of friction is very small.

On the other hand, soft materials achieve a lot of contact with surfaces, but - due to the larger amount of contact area - there is also a certain amount of adhesion or 'stick' not there with hard materials.

To solve this, stick insect's hairy friction pads employ three main tricks to allow contact area to increase quickly under pressure, creating a scale or 'hierarchy' of grip with absolutely no stick:

  • Both the pad itself and the tips of the hairs are rounded. This means that, when pressure is applied, more contact area is generated - like pushing down on a rubber ball.

  • Some hairs are shorter than others, so the more pressure, the more hairs come into contact with the surface.

  • When even more pressure is applied, some of the hairs bend over and make side contact - greatly increasing contact area with very little extra force.

These design features work in harmony to generate large amounts of friction with comparatively tiny amounts of pressure from the insect. Importantly, there is hardly any contact area without some tiny amount of pressure - which means that the specialised 'frictional hairs' don't stick.

Arrays of tiny hairs have been found before, for example on the feet of geckos, beetles and flies. However, these hairs are designed to stick, and are used when creatures are vertical or hanging upside down.

Sticky hairs are completely aligned and have flat tips - meaning that they immediately make full contact that hardly changes with additional weight - as opposed to friction hairs, with their higgledy-piggledy height ranges and rounded tips.

"We investigate these insects to try and under

Contact: Fred Lewsey
University of Cambridge

Page: 1 2 3

Related biology news :

1. New nanoglue is thin and supersticky
2. Analysis of stickleback genome sequence catches evolution in action
3. Gecko feet hold clues to creating bandages that stick when wet
4. Why cells stick: Phenomenon extends longevity of bonds between cells
5. Why sticking around is sometimes the better choice
6. Sea hares outsmart peckish lobsters with sticky opaline
7. A bad biology grade sticks around
8. Sticking power of plant polyphenols used in new coatings
9. Crabs, insects and spiders vulnerable to oil spill, but also resilient
10. UCSB study shows forest insects and diseases arrive in US via imported plants
11. Jurassic pain: Giant flea-like insects plagued dinosaurs 165 million years ago
Post Your Comments:
Related Image:
How stick insects honed friction to grip without sticking
(Date:3/19/2015)... , March 19, 2015  NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, announces its biometric ... news clip that aired this week on Washington ... In a segment "The Next Great Thing", host ... new way to pay, and ,a really big breakthrough in ...
(Date:3/16/2015)... Between 16 and 20 ... innovations in biometric identification at the CeBIT exhibition ...      (Photo: ) , ... at the forefront: the company,s all new BiometricGate ... Germany . BiometricGate is the first ...
(Date:3/11/2015)... , Mar. 11, 2015 Research and Markets ... of the "Access Control Market by Product, Application ... 2020" report to their offering. , ... expected to reach $10.4 billion by 2020, with an ... market report covers the products types such as contact ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 2DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 3Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2
... Ohio By restoring two small molecules that are ... block tumor growth in an animal model. , ... also showed that loss of the two molecules affects ... functions such as cell growth, death, proliferation and metabolism. ...
... (April 24, 2008) A team of Genographic researchers ... to date of African mitochondrial DNA (mtDNA). Over ... continent were analyzed by the scientists, led by Doron ... Haifa, and Saharon Rosset of IBM T.J. Watson Research ...
... optics for processing data in computers is coming closer ... of fast and slow light. The long term aim ... by several orders of magnitude and take the information ... performance with dramatically lower energy consumption. , The phenomenon ...
Cached Biology News:Two suppressor molecules affect 70 genes in leukemia 2Dawn of human matrilineal diversity 2Dawn of human matrilineal diversity 3European light research opens door for optical storage and computing 2
(Date:4/1/2015)... Earlier this year, A.J. O’Connor ... industry association that represents research-based life science organizations in ... Parker, AJO’s Vice President of Business Development & Executive ... event that attracted over 750 attendees. , In ... year old cancer survivor shared his moving story of ...
(Date:3/31/2015)... N.J., March 31, 2015 CytoSorbents Corporation ... using blood purification to treat critically-ill and cardiac ... operational summary and reports financial results for the ... 2014 CytoSorb® product revenues were a record ... to 2013 CytoSorb® revenues of $0.8M Highlights for ...
(Date:3/31/2015)... KY (PRWEB) March 31, 2015 ... 50 schools for online bachelor’s of criminal justice ... to connecting people to inspiring ideas and high ... an e-mail to the University. We are confident ... University.” , This is the site’s first ...
(Date:3/31/2015)...  Sonoa Health, a health tech startup based in ... world-first consumer health portal, Health&, which brings together data ... more. Today, the Company appointed respected investment ... brings to the table more than 18-years experience in ... closely with the biggest names in Silicon Valley in ...
Breaking Biology Technology:HR Consulting Firm, A.J. O'Connor Associates Joins BioNJ – The Vibrant 400 Member Strong Life Sciences Industry Association - and Attends its Annual Dinner 2CytoSorbents Reports Record 2014 Revenue 2CytoSorbents Reports Record 2014 Revenue 3CytoSorbents Reports Record 2014 Revenue 4CytoSorbents Reports Record 2014 Revenue 5CytoSorbents Reports Record 2014 Revenue 6CytoSorbents Reports Record 2014 Revenue 7CytoSorbents Reports Record 2014 Revenue 8CytoSorbents Reports Record 2014 Revenue 9CytoSorbents Reports Record 2014 Revenue 10CytoSorbents Reports Record 2014 Revenue 11EKU Ranked in Top 50 Among Online Criminal Justice Degrees 2Investment Banker Appointed CEO of Australian Health Tech Start-Up 2Investment Banker Appointed CEO of Australian Health Tech Start-Up 3
... (NASDAQ: VVUS ) today announced that Timothy Morris, ... at the 2011 Deutsche Bank BioFEST Conference. The ... Boston, MA on Tuesday, December 6, 2011 at 10:20 a.m. ... will be available at .About VIVUS VIVUS is ...
... SYDNEY, Nov. 30, 2011 Ocean energy company, BioPower ... Energy and Resources, the Hon. Michael O,Brien MP, has ... under the Sustainable Energy Pilot Demonstration Program. ... pilot demonstration of the company,s 250kW bioWAVE ocean wave ...
... RSB Spine announced today that it received a revised ... an interbody implant with integrated fixation and an anterior ... for stand-alone interbody devices with integrated fixation.   The new ... new code for cervical interbody devices is OVE.   In ...
Cached Biology Technology:VIVUS to Present at the Deutsche Bank BioFEST Conference 2VIVUS to Present at the Deutsche Bank BioFEST Conference 3BioPower Systems Awarded $5 Million from Victorian Government 2BioPower Systems Awarded $5 Million from Victorian Government 3FDA Establishes New Product Codes for Interbody Devices With Integrated Fixation 2
Phosphotyrosine IgG mouse monoclonal antibody: Alkaline Phosphatase conjugate...
anti-Lactate Dehydrogenase...
Alkali soluble casein is the recommended blot blocking reagent for use with the HisTag Monoclonal Antibody (Novagen) on Western blots....
Biology Products: