Abstract
We introduce Optofluidic PlasmonIC (OPtIC) microlenses to overcome the shortcomings of existing optical chromatography techniques by eliminating the need for sophisticated instrumentation and pre- cise alignment requirements. Our sub-wavelength thick (~200 nm thick) OPtIC microlenses offer objective-free focusing and self-alignment of optical and fluidic drag forces and present a facile platform for selective separation of exosome size bioparticles. By allowing direct coupling of collimated broadband light to realize strong optical scattering forces at a focal point, extremely small footprint (4 μm × 4 μm) OPtIC microlenses open the door for drastically multiplexed optical chromatography and high-throughput sample processing capability.
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