2 × 2 optofluidic switch chip with an air shutter Xu, Peng ; Wan, Jing ; Zhang, Simo ; Duan, Yixin ; Chen, Boyu ; Zhang, Sheng Abstract Publication: Applied Optics Pub Date: June 2019 DOI: 10.1364/AO.58.004637 Bibcode: 2019ApOpt..58.4637X