A research team, including Graduate Student Yoshiki Saito and Professor Masaaki Ashida of the Graduate School of Engineering Science, the University of Osaka, Dr. Yuto Makino of Daicel Corporation, and Professor Hajime Ishihara of the Research Organization of Science and Technology, Ritsumeikan University, has succeeded for the first time in selecting only nanodiamonds that glow at a desired wavelength using the pressure of light (optical pressure).
The research team utilized a principle where optical pressure changes based on the properties of the light emitted by the particles themselves. By using the stimulated recoil force associated with stimulated emission, they demonstrated that it is possible to select and transport only the target objects. This is a new concept, in which particles are not sorted by material, size, or mass, but by function itself, whether they can produce useful light or not. The results were published in ACS Nano.
Ashida said: "Research we have pursued for twenty years accelerated rapidly once we encountered nanodiamonds created through the detonation method. By introducing a new principle, we have successfully made a breakthrough for practical application. We will be able to obtain groups of new nano-phosphors that humanity has never possessed before, which I believe will have a significant impact on fundamental research. I am excited about the developments to come."
Provided by the University of Osaka
Journal Information
Publication: ACS Nano
Title: Selective Enrichment of Fluorescent Nanodiamonds by Stimulated Recoil Forces
DOI: 10.1021/acsnano.5c22759
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