APD	Avalanche photo diode
ARC	Asymmetric resonant cavity
GFP	Green fluorescent protein
LCORR	Liquid core optical ring resonator
MBR	Micro-bubble resonator
MDPI	Multidisciplinary Digital Publishing Institute
OMR	Optical microring resonator
PBS	Phosphate-buffered saline
PDMS	Polydimethylsiloxane
PMMA	Poly(methyl methacrylate)
RIU	Refractive index unit
r.m.s.	Root mean square
TEM	Transmission electronic microscope
WGM	Whispering gallery mode
WGMR	Whispering gallery mode resonator
YIG	Yttrium iron garnet