S1 Supporting Information Scalable Drop-To-Film Condensation on a Nanostructured Hierarchical Surface for Enhanced Humidity Harvesting Ankit Nagar †,‡ , Ramesh Kumar ‡ , Pillalamarri Srikrishnarka † , Tiju Thomas *,‡ and Thalappil Pradeep *,† † DST Unit of Nanoscience, Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India. ‡ Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India. Email: tijuthomas@iitm.ac.in, *,‡ pradeep@iitm.ac.in *,†