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Schematic (a) and fabricated chip (b) of the sensor based on hybrid ARROW optofluidic platform. Reprinted with permission from [34]. Copyright (2014) OSA; (c) SEM picture of liquid-core ARROW. Reprinted with permission from [36]. Copyright (2010) OSA; (d) SEM picture of the integrated silicon optofluidic ring resonator. Reprinted with permission from [37]. Copyright (2010) AIP.
