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RSS FeedsPolarization-encryption based data storage in 3-D Janus plasmonic helical nanoapertures
(PHYSorg.com Physics)

 
 

6 june 2019 20:00:45

 
Polarization-encryption based data storage in 3-D Janus plasmonic helical nanoapertures
(PHYSorg.com Physics)
 


Helical plasmonic nanostructures have attracted considerable attention in materials science and chemistry due to their inherent optical chirality. In a new report, Yang Chen and a research team in the department of Mechanical and Aerospace Engineering in the U.S. developed unique 3-D Janus (nanoparticles with two or more surface properties) plasmonic helical nanoapertures (helical holes), with direction-controlled polarization sensitivity. They engineered the helical structures using one-step grayscale focused ion beam milling (FIB). Chen et al. then encoded the Janus metasurface with two nanoaperture enantiomers (left and right handed mirror image molecules of each other) with specific rotational angles to demonstrate direction-controlled polarization data encryption for the first time.


 
37 viewsCategory: Science > Physics
 
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