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Updated: Jun 29, 2026

Label-free Single Molecule Detection Using Microtoroid Optical Resonators
Published on: December 29, 2015
Long-range one-dimensional longitudinal optical binding
V Karásek1, T Cizmár, O Brzobohatý
1Institute of Scientific Instruments of the ASCR, v.v.i., Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno, Czech Republic.
Abstract:
We create extended longitudinally optically bound chains of microparticles with the use of counterpropagating "nondiffracting" light fields, the so-called Bessel beams. The beam homogeneity and extended propagation range allow the creation of 200 microm long chains of organized microparticles. We observe short-range multistability within a single chain and long-range multistability between several distinct chains. Our observations are supported by theoretical results of the coupled dipole method.
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