A piezo-ring-on-chip microfluidic device for simple and low-cost mass spectrometry interfacing Tsao, Chia-Wen ; Lei, I. -Chao ; Chen, Pi-Yu ; Yang, Yu-Liang Abstract Publication: The Analyst Pub Date: 2018 DOI: 10.1039/C7AN01548H Bibcode: 2018Ana...143..981T