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Joseph L. Dehmer

Joseph L. Dehmer is Director of the Physical Measurement Laboratory (PML) of the National Institute of Standards and Technology. PML supports industry, government, and the scientific community by developing and disseminating the national standards for the International System of base and derived units (SI). It does so through a range of activities from fundamental research in measurement science to the provision of measurement standards and services. 

Dr. Dehmer took office in 2013. Previously he had served for 14 years as Director of the Division of Physics, and as a Senior Advisor for Strategic Planning, at the National Science Foundation (NSF).

Dr. Dehmer is a Fellow of the American Physical Society and the American Association for the Advancement of Science; has chaired, co-chaired or been a member of more than 20 committees of NSF, the National Research Council, and the U.S. Department of Energy; has served on the editorial boards of five research journals; and co-chaired the National Science and Technology Council’s Working Group on Physics of the Universe.

He received a B.S. degree in Chemical Engineering from Washington University and a PhD in Chemical Physics from the University of Chicago, where his advisor was Ugo Fano (the first theoretical physicist hired on staff by the National Bureau of Standards.)

Dr. Dehmer began his research career at Argonne National Laboratory before spending two years at NIST as leader of the Optical Sensor Group in what was then the Physics Laboratory and subsequently evolved into PML. Thereafter, Dr. Dehmer went to NSF where he remained until taking office at PML.

Joseph Dehmer


Physical Measurement Laboratory

Phone: 301-975-4200