Super Accurate Photonic Biosensors
June 5, 2018 | Terry Sharrer
Biophysicists at New York University, who pioneered the concept of “Whispering Gallery Mode” [WGM] of silicon bead behavior, have now shown how this concept can be used as for supersensitive photonic biosensors. “[They are] “the first to find a way to determine the density of charges on an area of a WGM micro-bead’s surface, as well as the charge of an ensnared nanoparticle or virus, by measuring how light frequency fluctuates as the tiny particle follows its wobbly course around the sphere. This discovery could allow researchers and manufacturers not just to identify nanoparticles, but to manipulate them.” In a blood sample this technology can detect virus particles, antibodies, cancer biomarkers and low level toxins. MORE
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