This volume presents papers on the topics covered at the National Academy of Engineering’s 2017 US Frontiers of Engineering Symposium. Every year the symposium brings together 100 outstanding young leaders in engineering to share their cutting-edge research and innovations in selected areas. The 2017 symposium was hosted by United Technologies Research Center (UTRC) in East Hartford, Connecticut, September 25–27. The intent of this book is to convey the excitement of this unique meeting and to highlight innovative developments in engineering research and technical work.