Microring resonators with flow-through nanopores for nanoparticle counting and sizing

Yubo Li, Xudong Fan
2013 Optics Express  
This paper proposes a high precision method for nanoparticle counting and sizing using a microring resonator-waveguide system that contains a flow-through nanopore. Theoretical analysis is carried out based on the coupled-mode theory, showing that when the nanoparticle passes the nanopore a temporal pulse signal can be detected and that the peak amplitude depends linearly on the nanoparticle volume. It is estimated that a nanoparticle of sub-10 nm in size may be detectable.
doi:10.1364/oe.21.000229 pmid:23388915 fatcat:zcmfhmgekzc7lfck4znvo7uuse