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:2/16/2017)... , Feb. 16, 2017  Rhythm, ... rare genetic deficiencies that result in life-threatening ... a $41 million mezzanine round of financing ... OrbiMed, MPM Capital, New Enterprise Associates, Pfizer ... undisclosed public healthcare investment fund. Rhythm will ...
(Date:2/16/2017)... (PRWEB) , ... February 16, ... ... Albany Molecular Research Inc. has further extended its industry leading Biochemistry Services ... service offers state-of-the-art cGMP techniques and methods for the biochemical and ...
(Date:2/15/2017)... CA (PRWEB) , ... February 15, 2017 , ... ... that Park SmartScan, a powerful AFM operating software that drastically boosts productivity with single ... completely automatizes all of the functions of setting up and taking the image once ...
(Date:2/15/2017)... , Feb. 15, 2017  NASA provider SpaceX is ... to the  International Space Station  no earlier than 10:01 ... launch will begin at 8:30 a.m. on NASA Television ... Dragon spacecraft will lift off on the company,s ... Kennedy Space Center in ...
Breaking Biology Technology:
(Date:2/9/2017)... , Feb. 9, 2017 The biomass ... analysis of the biomass boiler market globally in terms ... of biomass boilers. The market for biomass boilers has ... type, end-user, application, and country/region. The market based on ... & forest residues, biogas & energy crops, urban residues, ...
(Date:2/8/2017)... LONDON , Feb. 7, 2017 Report ... $12.5 billion by 2021 from $8.3 billion in 2016 ... from 2016 to 2021. Report Includes - An ... of global market trends, with data from 2015 and ... through 2021. - Segmentation of the market on the ...
(Date:2/3/2017)... SAN ANTONIO , Feb. 3, 2017  Texas Biomedical ... Dr. Larry Schlesinger as the Institute,s ... of Texas Biomed effective May 31, 2017. He is currently ... and Director of the Center for Microbial Interface Biology at ... Dr. Schlesinger as the new President and CEO of Texas ...
Breaking Biology News(10 mins):