Ultrasensitive Gas-Phase Chemical Sensing Based on Functionalized Photonic Crystal Nanobeam Cavities
ACS Nano2013Vol. 8(1), pp. 522–527
Citations Over TimeTop 10% of 2013 papers
Abstract
Photonic crystal nanobeam cavities with high-quality factors are very sensitive to the changes of the dielectric properties of their surroundings. Utilizing this high sensitivity and by applying chemical functionalization, an ultrasensitive chemical sensor for gases based on a nanobeam cavity was demonstrated. A limit of detection of 1.5 parts-per-billion (ppb) in ambient conditions, determined from the noise level of the system, was achieved for nerve agent simulant methyl salicylate. The nanobeam cavity's nonlinear thermo-optical bistability is also utilized to realize a threshold detector for cumulative chemical exposure.
Related Papers
- → Theoretical investigation on commanding the bistability and self-pulsation of bistable semiconductor laser diode using delayed optoelectronic feedback(2005)9 cited
- → All-optical bistable switching and signal regeneration in a semiconductor layered distributed-feedback/Fabry–Perot structure(1993)31 cited
- → INTRODUCTION TO OPTICAL BISTABILITY(1985)4 cited
- → OPTICAL BISTABILITY(1985)2 cited
- → Optical bistability in nematic liquid crystals(2017)