ZORRO: zirconium oxide resonators for all-in-one Raman and whispering-gallery-mode optical sensing.

N BontempiI VassaliniS DanesiIvano Alessandri

Published in: Chemical communications (Cambridge, England) (2017)

We report the observation of whispering-gallery modes in 2 μm-sized SiO2/ZrO2 core/shell beads utilized as all-dielectric Raman enhancers. This allows us to achieve simultaneous optical and Raman ultrasensitive detection with a single spectral analysis. This opportunity opens exciting perspectives for the multimodal chemical sensing and fabrication of optical fiber devices.

Keyphrases

label free
high resolution
high speed
raman spectroscopy
optical coherence tomography
quantum dots
loop mediated isothermal amplification
low cost
sensitive detection
data analysis