Supporting Information Nanopillar Array on Black Titanium Prepared by Reactive Ion Etching Augments Cardiomyogenic Commitment of Stem Cells Lopamudra Das Ghosh a , Jafar Hasan a , Aditi Jain b , Nagalingam R. Sundaresan b,c# , Kaushik Chatterjee a,b,* a Department of Materials Engineering b Centre for Biosystems Science and Engineering c Department of Microbiology and Cell Biology Indian Institute of Science, Bangalore 560012, India Corresponding authors: * Kaushik Chatterjee Email: kchatterjee@iisc.ac.in Phone: +91-80-2293-3408, Fax: +91-80-2360-0472 # Nagalingam R. Sundaresan Email: rsundaresan@iisc.ac.in Phone: +91-80-2293-2068, Fax: +91-80-2360-2697 Electronic Supplementary Material (ESI) for Nanoscale. This journal is © The Royal Society of Chemistry 2019