. | . |
Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U by Staff Writers Beer-Sheva, Israel (SPX) Jun 28, 2017
An innovative technique using light and tiny bubbles to propel microparticles at forces many times greater than previously achieved has been developed by Ben-Gurion University of the Negev researchers. The new technique could have significant implications in the development of micromotors and optical devices for use in solar cell optics. "What we ultimately hope to achieve is a highly accurate, passive technology for use in a concentrated solar device that would follow the sun without the need for a mechanical tracking mechanism," says Dr. Avi Niv, study co-author. According to the findings published recently in Nature Scientific Reports, the researchers converted the energy created from light into kinetic motion using nano-sized, laser-generated bubbles. As the bubble expands it acts as a propulsion mechanism for surrounding microparticles. Mechanical manipulation of micro- and nano-scaled objects is important in biology, surface science and microfluidics, and for micromachines in general. Dr. Niv says, "In our study, a micron-sized object was propelled at unprecedented speeds of close to one meter-per-second, six times faster than what is common in present devices, while still maintaining motion direction control." Dr. Niv and co-author Ido Frenkel, a Ph.D. student, are part of BGU's Alexandre Yersin Department of Solar Energy and Environmental Physics at the Jacob Blaustein Institutes for Desert Research. "After the bubble initiates movement and bursts, there is no trace of the vapor; the system returns to the original state and the same action can be initiated repeatedly, like a combustion engine." View a video of the experiment here
Washington DC (SPX) Jun 28, 2017 In the last decades, mobile phones and other wireless devices have become central features of life around the globe. These devices radiate varied amounts of electromagnetic energy and thus project electric fields into the surrounding space. It is crucial to the design and deployment of these devices that they have accurate and traceable measurements for electric fields and radiated power. Until ... read more Related Links American Associates, Ben-Gurion University of the Negev Powering The World in the 21st Century at Energy-Daily.com
|
|
The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us. |