By a News Reporter-Staff News Editor at Science Letter -- Research findings on Nanowires are discussed in a new report. According to news reporting out of Paris, France, by NewsRx editors, research stated, "The recent discovery of fuel-free propulsion of nanomotors using acoustic energy has provided a new avenue for using nanomotors in biocompatible media. Crucial to the application of nanomotors in biosensing and biomedical applications is the ability to remotely control and steer them toward targets of interest, such as specific cells and tissues."
Our news journalists obtained a quote from the research from the City of Paris Industrial Physics and Chemistry Higher Educational Institution (ESPCI), "We demonstrate in vitro magnetic steering of acoustically powered nanorod motors in a biologically compatible environment. Steering was accomplished by incorporating (40 +/- 5) nm thick nickel stripes into the electrochemically grown nanowires. An external magnetic field of 40-45 mT was used to the motors, which were acoustically propelled along their long axes. In the absence of a magnetic field, (300 +/- 30) nm diameter, (4.3 +/- 0.2) pm long nanowires with (40 +/- 5) nm thick magnetic stripes exhibit the same self-acoustophoretic behavior, including pattern formation into concentric nanowire circles, aligned spinning chains, and autonomous axial motion, as their non-magnetic counterparts. In a magnetic field, these wires and their paths are oriented as evidenced by their relatively linear trajectories."
According to the news editors, the research concluded: "Coordinated motion of multiple motors and targeting of individual motors toward HeLa cells with micrometer-level precision was demonstrated."
For more information on this research see: Steering Acoustically Propelled Nanowire Motors toward Cells in a Biologically Compatible Environment Using Magnetic Fields. Langmuir, 2013;29(52):16113-16118. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)
Our news journalists report that additional information may be obtained by contacting S. Ahmed, ESPCI, UMPC, CNRS, Lab Phys & Mecan Milieux HeterogenesUMR7636, F-75005 Paris, France. Additional authors for this research include W. Wang, L.O. Mair, R.D. Fraleigh, S.X. Li, L.A. Castro, M. Hoyos, T.J. Huang and T.E. Mallouk (see also Nanowires).
Keywords for this news article include: Paris, France, Europe, Nanotechnology, Emerging Technologies
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