MIT Tunes Ions For Frictionless Surface - Superlubricity!

MIT scientists have developed an experimental technique to simulate friction at the nanoscale. In particular, they can cause superlubricity - a phenomenon in which friction goes to zero, allowing surfaces to slide without resistance.


(MIT method for frictionless surface study)

Using their technique, the researchers are able to directly observe individual atoms at the interface of two surfaces and manipulate their arrangement, tuning the amount of friction between the surfaces. By changing the spacing of atoms on one surface, they observed a point at which friction disappears.

The team simulated friction at the nanoscale by first engineering two surfaces to be placed in contact: an optical lattice, and an ion crystal. The optical lattice was generated using two laser beams traveling in opposite directions, whose fields add up to form a sinusoidal periodic pattern in one dimension. This so-called optical lattice is similar to an egg carton..

Vuletic then engineered a second surface: an ion crystal — essentially, a grid of charged atoms — in order to study friction’s effects, atom by atom. To generate the ion crystal, the group used light to ionize, or charge, neutral ytterbium atoms emerging from a small heated oven, and then cooled them down with more laser light to just above absolute zero. The charged atoms can then be trapped using voltages applied to nearby metallic surfaces...

The team then used the same forces that are used to trap the atoms to push and pull the ion crystal across the lattice, as well as to stretch and squeeze the ion crystal, much like an accordion, altering the spacing between its atoms.

In his wry 1940 short story The Exalted, science fiction author L. Sprague de Camp describes a remarkable ray which can neutralize friction:

...something happened to the front steps under him. They became slicker than the smoothest ice...

Every time he applied a horizontal component of force to a hand or knee, the hand or knee simply slid backward.

"...My telelubricator here neutralizes the interatomic bonds the surface of any solid on which the beam falls. So the surface, to the depth of a few molecules, is put in the condition of a supercooled liquid as long as the beam is focused on it. Since the liquid form of any compound will wet the solid form, you have perfect lubrication."
(Read more about de Camp's telelubricator)

Via Vanishing friction: In tuning friction to the point where it disappears, technique could boost development of nanomachines. (MIT press release).

Scroll down for more stories in the same category. (Story submitted 8/21/2017)

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 - (" Engineering ")

Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.' - Larry Niven, 1970.

Skin Electronics 3D Printed
'June's body is a tracery of lambent lines, like some arcane capillary circuitry...' - Paul Di Filippo, 1985

Super-Resolution Microscopy Provides '4D' Views
View the magnified interior of living cells.

Physicists Try To Turn Light Into Matter
If E=mc squared, then... m=E/c squared!

 

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

Ontario Starts Guaranteed Minimum Income
'Earned by just being born.'

Is There Life In Outer Space? Will We Recognize It?
'The antennae of the Life Detector atop the OP swept back and forth...'

Space Traumapod For Surgery In Spacecraft
' It was a ... coffin, form-fitted to Nessus himself...'

Tesla Augmented Reality Hypercard
'The hypercard is an avatar of sorts.'

A Space Ship On My Back
''Darn clever, these suits,' he murmured.'

Biomind AI Doctor Mops Floor With Human Doctors
'My aim was just not to lose by too much.' - Human Physician participant.

Fuli Bad Dog Robot Is 'Auspicious Raccoon Dog' Bot
Bad dog, Fuli. Bad dog.

Las Vegas Humans Ready To Strike Over Robots
'A worker replaced by a nubot... had to be compensated.'

You'll Regrow That Limb, One Day
'... forcing the energy transfer which allowed him to regrow his lost fingers.'

Elon Musk Seeks To Create 1941 Heinlein Speedster
'The car surged and lifted, clearing its top by a negligible margin.'

Somnox Sleep Robot - Your Sleepytime Cuddlebot
Science fiction authors are serious about sleep, too.

Real-Life Macau or Ghost In The Shell
Art imitates life imitates art.

Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.'

First 3D Printed Human Corneas From Stem Cells
Just what we need! Lots of spare parts.

VirtualHome: Teaching Robots To Do Chores Around The House
'Just what did I want Flexible Frank to do? - any work a human being does around a house.'

Messaging Extraterrestrial Intelligence (METI) Workshop
SF writers have thought about this since the 19th century.

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.