Navigation Links
Newly discovered mechanism propels micromotors
Date:10/19/2013

WASHINGTON, D.C. Oct. 15, 2013 -- Scientists studying the behavior of platinum particles immersed in hydrogen peroxide may have discovered a new way to propel microscopic machines. The new mechanism is described in The Journal of Chemical Physics, which is produced by AIP Publishing.

Micro-sized machines operate under very different conditions than their macro-sized counterparts. The high surface-area-to-mass ratio of tiny motors means they require a constant driving force to keep them going. In the past, researchers have relied on asymmetric chemical reactions on the surface of the motors to supply the force. For example, Janus motors, are spherical particles coated with a different material on each side. One of the sides is typically made of a catalyst like platinum, which speeds up the reaction that converts hydrogen peroxide into water and oxygen. When the Janus motor is immersed in hydrogen peroxide, oxygen bubbles form more quickly on the platinum side, pushing the sphere forward.

Researchers from Doshisha University in Kyoto, Japan have now discovered, however, that two-sided materials aren't necessary to make micromotors move. The researchers placed tiny spheres made only of platinum in hydrogen peroxide and observed the particles' movement through a microscope. Although the individual spheres bounced about randomly, the researchers noticed that clumps of particles began to exhibit regular motions. The clumps shaped like teardrops moved forward, those that resembled windmills started to spin, and the boomerang shaped clumps traveled in a circle. After creating a theoretical model of the forces at work, the researchers realized they could explain the regular motions by the asymmetrical drag generated by the different shapes.

The researchers envision combining their new type of motors with existing motors to create easily controllable machines with a versatile range of motions.

Micro- and nano-sized machines may one day ferry drugs around the body or help control chemical reactions, but the Japanese team also sees a more fundamental reason to study such tiny systems.

"Micromotors may be used not only as a power source for micromachines and microfactories, but may also give us significant insight regarding mysterious living phenomenon," said Daigo Yamamoto, a researcher in the Molecular Chemical Engineering Laboratory at Doshisha University and an author on the paper that describes the new motors.


'/>"/>

Contact: Jason Socrates Bardi
jbardi@aip.org
240-535-4954
American Institute of Physics
Source:Eurekalert  

Related biology technology :

1. Sutro Announces Newly Formed Scientific Advisory Board
2. Newly-Published Study Compares SURFAXIN LS™ and CUROSURF® in Well-Established Model of Respiratory Distress Syndrome
3. Cardiometabolic Health Congress Expert Faculty Evaluate the Clinical Implications of Newly FDA-Approved Treatment for Homozygous Familial Hypercholesterolemia
4. Scientists Describe Breakthrough Technology for Brain Self-Optimization in Newly Published Paper
5. MedForward Launches Newly Redesigned MedForward.com, Now Offering Mobile Site Design Services to Increase Website Accessibility for Smartphones and Tablets
6. Quanta BioSciences qRT-PCR technology recommended in newly published CDC protocol for detection of H7N9 Avian Influenza
7. FTI Consulting Releases Realigned Segment Information Reflecting Newly Combined Health Solutions Practice
8. Vivid Learning Systems Announces Newly Designed Industry Websites for MSHA, Electrical Utility Safety, Healthcare and OSHA Compliance
9. Dual-acting class of antimalarial compounds discovered with potential to prevent and treat malaria
10. Novel method to make nanomaterials discovered
11. Australian Discovered Biomarkers Map Path to New Blood Test for Bowel Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Newly discovered mechanism propels micromotors
(Date:8/23/2017)... ... August 23, 2017 , ... ... news outlet had initiated coverage on NuLife Sciences. According to Soulstring, NuLife Sciences ... transplant industry, focused on kidney transplant technology that integrates proprietary recellularization processes intended ...
(Date:8/23/2017)... ... August 23, 2017 , ... ... ability to manipulate 3D models of pediatric patients’ neuroanatomy and accurately tailor radiation ... of the Journal of Medical Imaging. The advance is reported in an article ...
(Date:8/23/2017)... ... August 22, 2017 , ... Mettler-Toledo, one of the market leaders in product ... . This turnkey system inspects labels, prints, and packaging properties fully automatically, and, thanks ... lines and extended as needed. , The high-end version of the V2630 was ...
(Date:8/23/2017)... (PRWEB) , ... August 22, 2017 , ... ... announced that two market innovators, Munich Re , one of the world’s ... (IQT), the strategic investor that accelerates the development of technologies to support the ...
Breaking Biology Technology:
(Date:8/23/2017)... 2017  The general public,s help is being enlisted in what,s thought ... in and on the human body –and are believed to affect health.  ... The Microbiome Immunity Project is the ... with the gut. The project's goal is to help advance scientific knowledge ... ...
(Date:8/15/2017)... HAMPTON, Va. , Aug. 15 2017   ivWatch LLC ... effectiveness of intravenous (IV) therapy, today announced receipt of its ISO ... (QMS) developed by the International Organization for Standardization (ISO®). ... ivWatch Model 400 Continuous Monitoring device for ... "This ...
(Date:7/20/2017)... DAL ) customers now can use fingerprints instead of their boarding ... ... biometrics to board aircraft at Reagan Washington National Airport ... Delta,s biometric boarding pass experience that launched in May at the ... to allow eligible Delta SkyMiles Members who are enrolled in CLEAR to ...
Breaking Biology News(10 mins):