The use of pulses of chemical fuel to directionally transport components and substrates via an energy ratchet mechanism is operationally simple, effective, generates relatively innocuous waste products, and can function in a range of rotary and linear molecular motor and pump designs. Such a universally applicable chemically-fuelled molecular motor-mechanism has the potential to find broad application in molecular nanotechnology. Courtesy: D Leigh

Topics: Brownian Motion, Chemistry, Nanotechnology, NEMS

Chemists at the University of Manchester in the UK say they have succeeded in developing a new and simple technique for powering both linear and rotary molecular motors made from catenanes. These are mechanically interlocked rings of DNA that could be used to make devices that can be switched between different states using external triggers like changes in pH. The breakthrough method – until now it was only possible to power either rotary or linear motors – might be used to power future molecular machines.

“In the molecular machines we are familiar with in the ‘big world’, the parts, such as cogs, flywheels and pistons, do not move unless a force is applied to them,” explains team leader David Leigh. “At the molecular scale, however, molecules and their parts are constantly moving through Brownian motion and we need to find ways to control the direction of this motion if we are to develop fully-functioning nanomachines.”

Last year, Leigh’s team made the first autonomous chemically-fuelled molecular motor that runs as long as a chemical fuel is present. This rotary motor relies on information transfer between the machine components: a blocking group adds as soon as the ring has moved past a certain point in a given direction and that group also prevents the ring moving backwards through Brownian motion.

The researchers use trichloroacetic acid (Cl3CCOOH) as the fuel in their motor. Cl3CCOOH undergoes base-catalysed decarboxylation, and by adding an excess of this acid to a solution containing the molecular motor and another chemical (triethylamine, or Et3N), they were first able to make the medium acidic and then, as the Cl3CCOOH decomposes, basic.

Chemical fuel pulses power rotary and linear nanomotors, Belle Dumé, Nanotechweb.org

Views: 4

Comment

You need to be a member of BlackScienceFictionSociety to add comments!

Join BlackScienceFictionSociety

Badge

Loading…

IMPORTANT ALERTS

ALERT! ALERT! ALERT! 

IF YOU ARE HAVING TROUBLE CHANGING YOUR PROFILE  PICTURE, SWITCH TO EITHER CHROME BROWSWER OR FIREFOX. THERE IS A KNOWN ISSUE WITH INTERNET EXPLORER THAT CAUSES TROUBLE CHANGING PICTURES.


PLEASE DO NOT SIGN IN WITH FACEBOOK IF YOU ALREADY HAVE AN ACCOUNT. YOU WILL CREATE A DUPLICATE THAT WILL NOT HAVE YOUR INFO CONNECTED. THANKS

NO SPAMMING

Please do not greet everyone on the site with large images and/or announcements of your book or business. Yes, you want to tell the world, but learn the fine art of subtlety. We have lost numerous members because of the amount of 'friend' mail they instantly receive. This Hurts Everyone.

Also, DO NOT post the same information multiple times throughout the site. It will be deleted without notice.

 

Spam is unsolicited advertising, whether it is posted as comments on other members' pages or is emailed for marketing purposes.

 

Please be considerate. Post your advertisement in the proper Articles/Forum or Group. There are inexpensive marketing channels that reach every member for just $25 on the Advertising tab. You can post your information on your profile and even update your blog as often as you like.

 

We are not into censorship, so please don't make us ask you to leave. Be kind and unselfish - don't spam.

 

Your Account Will Be Deleted Without Warning For Spam.

 

Blog Posts

Dr. Claudia Alexander, In Memoriam...

Posted by Reginald L. Goodwin on February 23, 2018 at 8:35am 0 Comments

Claudia Alexander: 1959 - 2015

Topics: African Americans, Civil Rights, Diaspora, Diversity, Diversity in Science, History, NASA, Science Fiction, Women in Science

As a research scientist, she inspired a generation, especially young women, to seek careers in science, technology, engineering and…
Continue

A Taste of Armageddon...

Posted by Reginald L. Goodwin on February 23, 2018 at 8:31am 0 Comments

Scene from "A Taste of Armageddon" - I see where SNL got the Cone Heads.

Topics: Commentary, Existentialism, Politics, Star Trek

From "A Taste of Armageddon," Teaser and excerpt of Act I:…

Continue

Dr. Pamela McCauley...

Posted by Reginald L. Goodwin on February 22, 2018 at 8:00am 0 Comments

Dr. Pamela McCauley Bush

Topics: African Americans, Civil Rights, Diaspora, Diversity, Diversity in Science, History, Women in Science

Engineer, Educator, Leader & Entrepreneur

Dr. Pamela McCauley is an…
Continue

Laser Phone Charging...

Posted by Reginald L. Goodwin on February 22, 2018 at 7:52am 0 Comments

A new laser system can wirelessly recharge phones from across the room(Credit: Mark Stone/University of Washington)

Topics: Applied Physics, Electrical Engineering, Electronics, Laser

Continue

Dr. Jarita C. Holbrook...

Posted by Reginald L. Goodwin on February 21, 2018 at 4:49am 1 Comment

Dr. Jarita C. Holbrook, Astronomers of the African Diaspora

Topics: African Americans, Civil Rights, Diaspora, Diversity, Diversity in Science, History, Women in Science

Birthplace: Honolulu, Hawaii Pre-doctorate education: B.S. Physics (1987),…

Continue

DESI...

Posted by Reginald L. Goodwin on February 21, 2018 at 4:42am 0 Comments

The 5,000 pencil-size robots will fit snugly inside 10 wedge-shaped petals. Here, one of those wedges is fully stocked with 500 robots, each of which will swivel independently to gather light from a known group of space objects, including distant galaxies. Credit: DESI Collaboration

Topics: Astronomy, Astrophysics, Dark Energy, Space Exploration, Spectrograph, Robotics…

Continue

The Digital Brothers Multimedia

The Digital Brothers
Our goal is to provide cost effective technological solutions for home, small and big business. After over 20 years of service working in this field, we decided to utilize our talents to develop and cultivate our own vision to benefit the community.
2D & 3D Animation
Graphic & Web Design
Photo & Video
Multimedia Development
Online & Print Marketing

Contact Us Today To Assist In Your Business Success
Website: www.TheDigitalBrothers.com
Email: info@thedigitalbrothers.com

SKYCITY TALKRADIO

THE UNDERGROUND BY ROXANNE BLAND

Life as alpha of a werewolf pack is anything but predictable. But even Parker Berenson is surprised by the latest twist: he’s fallen in love with a space alien. Problem is, he suspects Melera, his sexy new flame, might be the serial killer terrorizing Seattle. Or maybe she isn’t. After all, just because she’s an interstellar assassin doesn’t mean she’s guilty.

http://blackrosepress.com/

© 2018   Created by Jarvis Sheffield - Admin.   Powered by

Badges  |  Report an Issue  |  Terms of Service