Anti-Adhesive Surfaces Of Plants

The war continues - a battle for the ages. Which side will win - arachnids and other insects with sticky feet, or the slippery slopes of passive carnivorous plants like the pitcher plant? Actually, materials scientists who study both sides are the real winners.

Human beings have spent a lot of time looking for perfectly frictionless surface coatings; writers like Clifford Simak and Frank Herbert have imagined them in science fiction. Just as the stickiest surfaces have been found on the feet of natural creatures like geckoes and spiders, slippery surfaces have also been found in the natural world.

Researchers from the Max Planck Insitute for Metals Research and the University of Hohenheim have shown that the carniverous pitcher plant uses an especially slippery slope to catch prey. The plant has a lid, a peristome (a ring around the trap entrance), a slippery zone and a digestive zone.


(Pitcher Plant)

The plant walls of the slippery zone are covered with a double layer of crystalline wax. The upper layer has crystalloids which contaminate the attachment organs that insects use to adhere to surfaces. It is made of single, iregular 30-50 nanometer platelets standing more or less perpendicular to the plant wall.

The lower layer is similar to foam, being made of connected membrane-like platelets which stick out at sharp angles and offer no clear orientation. This layer further reduces the contact area between insect feet and plant surface.

Writing in Way Station, a Hugo-award winning 1963 novel, Clifford Simak imagined an absolutely impenetrable and frictionless coating:

It was as if the knob was covered with some hard, slick coating, like a coat of brittle ice, on which the fingers slipped wihout exerting any pressure on the knob...

He tried a thumbnail on it, and the thumbnail slipped but left no mark behind it... The rubbing of his palm set up no friction...
(Read more about the frictionless surface)

In his 1965 novel Dune (which also won a Hugo), Frank Herbert wrote about a device for water measurement that was absolutely frictionless - no binding tension whatsoever.

Read about water repellent glass modeled on lotus leaves to find out more about a successful instance in which real-world material science was able to imitate nature. On the other side of the coin, take a look at a scientific investigation of the sticky feet of spiders.

Read more at Plants provide new ideas for anti-adhesive surfaces.

Scroll down for more stories in the same category. (Story submitted 1/18/2006)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Material ")

3D Printed Graphene Aerogel - So Light!
'... light as cork and stronger than steel...' - Edgar Rice Burroughs, 1929.

Vantablack Now IMMEASURABLY Black
'a black coating now that’s ninety-nine percent absorptive...' - Doc Smith, 1934.

New Paper - Write With Light Erase With Heat
Writing with light, erasing with heat.

Reconfigured Graphene 10X Strong, 5 Percent Dense, As Steel
'...It was made of Alohydrolium, which is the lightest of all metals.' - Hugo Gernsback, 1911.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Make Space Tools On The Spot (Like Moties)
'A moment ago it was squeezing silver toothpaste in a ribbon...'

Will Robots Be Moral If We Raise Them Like Our Children?
'The birth of Machine, my robot child...'

Foldable Galaxy Phones, I Swear They're Coming (Maybe)
How hard can it be?

Bacteria Behave Differently In Space
'The Republic struggled to control its Sours...'

Brain Connected To Internet - ‘Brainternet'
Fascinating!

Artificial Spider Silk
You can also use it to make a roof - on an asteroid.

MIT Tunes Ions For Frictionless Surface - Superlubricity!
'My telelubricator here neutralizes the interatomic bonds the surface of any solid...'

Seiko Astron Always Knows Your Time Zone
'Harrington glanced at his wrist watch - a bulky affair - and whistled.'

Robot Buddhist Priest Chants, Drums
'He crossed the waiting room to the Padre booth...'

Koniku Kore, Mouse Brain-Based Chip, Detects Explosives
'As a matter of fact, this mouse is going to keep on thinking forever.'

CNH Industrial Autonomous Tractor Concept Video
'...the tiny red glints of self-guided tractors.'

The Neuroon Open Sleep Tracker For Lucid Dreaming
'Leads trail away from insertion points on her face and wrist... to a lucid dreamer on the bedside shelf.'

Siri Now Smoother, Perkier (Thanks, Deep Learning!)
'Good morning, Dr. Chandra. This is Hal.'

China's Drone Fleet Flies In Formation
'Programmed to hang... in a hexagonal grid pattern.'

Neuralink, The Latest Elon Musk Passion
'I used my implant to tell MILLIE [a mainframe computer] what we wanted...'

RFly Drones Rule The Warehouse
'The wasp homed unerringly on the face of the honeycomb...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.