White House Office of Science & Technology Policy, Director, Science & Technology Advisor to President Barack Obama |
Former Office of Science & Technology Policy, Director; Former Science & Technology Advisor to the President George W. Bush |
Rice University, Former Office of Science & Technology Policy, Director; Former Science & Technology Advisor to the President Bill Clinton |
Nanocomp Technologies, Inc., President & Chief Executive Officer
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United States Secretary of Energy |

QD Vision Inc., Founder and Chief Technology Officer, Member of the Board of Directors |

National Institutes of Health (NIH), Director
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University of North Carolina, Chancellor’s Eminent Professor of Chemistry |
National Nanotechnology Coordination Office, Assistant Director |
Massachusetts Institute of Technology and University of Heidelberg, Director of the Nanomedicine Translational Think Tank |
Harvard Medical School & Brigham & Women's Hospital, Founder BIND Biosciences |
National Institute of Standards and Technology (NIST), Director |
National Cancer Institute, NCI Alliance for Nanotechnology in Cancer, Director |
Nanosys, President and Chief Executive Officer |
White House Office of Science and Technology Policy, Deputy Director for Policy |
MIT, David H. Koch Institute Professor
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Department of Defense, Defense Research & Engineering, Director |
California Institute of Technology, George L. Argyros Professor of Chemistry |
Lockheed Martin, Director of Research Science; Lockheed Martin Nanosystems, Chief Technologist |
Molecular Imprints, Founder and Chief Technical Officer |
MIT, Dean of the School of Engineering |

National Nanotechnology Coordination Office, Director |
Georgia Tech, Center for Nanostructure Characterization, Director |
Hewlett-Packard Laboratories, HP Senior Fellow |