Akshay Datey1, Dipshikha Chakravortty2, Jagadeesh Gopalan3. 1. Centre for Biosystems Science & Engineering, Indian Institute of Science, India. 2. Centre for Biosystems Science & Engineering, Indian Institute of Science, India; Department of Microbiology & Cell Biology, Indian Institute of Science, India. Electronic address: dipa@iisc.ac.in. 3. Centre for Biosystems Science & Engineering, Indian Institute of Science, India; Department of Aerospace Engineering, Indian Institute of Science, India. Electronic address: jaggie@iisc.ac.in.