S-1 Supporting Information Dynamically tunable elasto-inertial particle focusing and sorting in microfluidics Yinning Zhou, Zhichao Ma, and Ye Ai * Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore * Corresponding author. Email: aiye@sutd.edu.sg; Tel: +65 6499 4553 Electronic Supplementary Material (ESI) for Lab on a Chip. This journal is © The Royal Society of Chemistry 2019