Navigation Links
Scientists design, control movements of molecular motor
Date:1/10/2013

ATHENS, Ohio (Jan. 10, 2013)An international team of scientists has taken the next step in creating nanoscale machines by designing a multi-component molecular motor that can be moved clockwise and counterclockwise. Although researchers can rotate or switch individual molecules on and off, the new study is the first to create a stand-alone molecular motor that has multiple parts, said Saw-Wai Hla, an Ohio University professor of physics and astronomy who led the study with Christian Joachim of A*Star in Singapore and CEMES/CNRS in France and Gwenael Rapenne of CEMES/CNRS.

It's an essential step in creating nanoscale devicesquantum machines that operate on different laws of physics than classical machinesthat scientists envision could be used for everything from powering quantum computers to sweeping away blood clots in arteries.

In the study, published in Nature Nanotechnology, the scientists demonstrated that they could control the motion of the motor with energy generated by electrons from a scanning tunneling microscope tip. The motor is about 2 nanometers in length and 1 nanometer high and was constructed on a gold crystal surface.

At a temperature of minus 315 degrees Fahrenheit, the motor could move independently through thermal excitation. When scientists cooled the sample to minus 450 degrees, the motor stopped rotating. The researchers selectively applied electron energy to different parts of the motor to prompt it to move clockwise and counterclockwise.

"If we want to build an actual device based on this motor, we would install electrodes on the surface to create an energy source," Hla said. To construct the molecular motor, the scientific team designed a stationary base of atoms that is connected to an upper moving part by one atom of ruthenium, which serves as the "ball bearing." The upper piece of the motor features five arms made of iron atoms. The researchers made one arm shorter than the others to be able to track the motion of the machine. The entire device is held upright by using sulfur as an "atomic glue" to secure the motor to the gold surface, Hla explained.

The scientists now plan to use this model to build more complex machines with components that could be automated, Hla said.


'/>"/>

Contact: Andrea Gibson
gibsona@ohio.edu
740-597-2166
Ohio University
Source:Eurekalert  

Related biology technology :

1. Scientists defuse the Vietnam time bomb
2. Singapore scientists lead human embryonic stem cell study
3. Sheffield scientists shine a light on the detection of bacterial infection
4. Nanowiggles: Scientists discover graphene nanomaterials with tunable functionality in electronics
5. Scientists solve mystery of colorful armchair nanotubes
6. iBioSeminars and iBioMagazine: Free, Online Biology Seminars and Short Talks by Leading Scientists
7. Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research
8. Scientists decode brain waves to eavesdrop on what we hear
9. Receptos Scientists Publish Determination of a High Resolution Sphingosine 1-Phosphate Receptor 1 Structure in Science
10. Scientists learn how to out run damage with imaging technique
11. Design eye for the science guy: Drop-in clinic helps scientists communicate data
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists design, control movements of molecular motor
(Date:2/8/2016)... has an active R&D program for the development of future ... has a unique research and development center in ... Control products. Stockton has a variety ... guidelines, and is active in more than 35 counties worldwide. ... Stockton,s flagship product Timorex Gold ® is ...
(Date:2/5/2016)... , Feb. 5, 2016 ATCC, the ... poised to assist the medical and life science researchers ... Zika Virus infection.   CDC website . ... --> Zika virus is a single-stranded RNA virus ... the West Nile, Dengue and Chikungunya Viruses. Zika virus ...
(Date:2/4/2016)... ... February 04, 2016 , ... Morf Media Inc ., ... interactive FDA compliance training course, Writing Effective SOPs (Standard ... interactive course on Morf Playbook—now conveniently available on smartphones and PCs--provides step by ...
(Date:2/4/2016)... 2016 Beike Biotechnology, the Shenzhen ... a ceremony in late 2015 to mark their successful ... 2016. --> --> ... Personalized Cell Therapy" was hosted by the Shenzhen Cell ... subsidiaries of Beike Biotechnology Co., Ltd. ...
Breaking Biology Technology:
(Date:1/27/2016)... , Jan. 27, 2016  Rite Track, Inc. a ... West Chester, Ohio announced today ... service staff, based in Austin, Texas ... ability to provide modifications, installations and technical support offerings ... CEO of PLUS, commented, "PLUS has provided world class ...
(Date:1/21/2016)... , January 21, 2016 ... a new market research report "Emotion Detection and Recognition ... Software Tools (Facial Expression, Voice Recognition and Others), ... Global forecast to 2020", published by MarketsandMarkets, the ... to reach USD 22.65 Billion by 2020, at ...
(Date:1/15/2016)... Jan. 15, 2016 Recent publicized breaches in ... find new ways to ensure data security and user ... and Android that ties a user,s ... it into a hardware authorization token. Customer service agents ... fingerprint on their KodeKey enabled device to verify their ...
Breaking Biology News(10 mins):