A thin-walled capillary WGM biosensor using localized conical modes reports a theoretical CEACAM5 detection limit of 0.38 ag/mL with 0.25 nm/(ag/mL) linear-region sensitivity, about ten times current active WGM sensors.
Sumetsky, Optics letters 2011, 36, 2 145
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Ultrasensitive Label-free Detection of Human CEACAM5 using a WGM Resonator Based on Thin-walled Capillary
A thin-walled capillary WGM biosensor using localized conical modes reports a theoretical CEACAM5 detection limit of 0.38 ag/mL with 0.25 nm/(ag/mL) linear-region sensitivity, about ten times current active WGM sensors.