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CNF Staff

Donald  Tennant
Donald Tennant
CNF Director of Operations
Mail Address: 250 Duffield Hall
Ithaca, NY 14853-2700
General Phone: 607-255-2329
Cubicle: 262 Duffield Hall
Direct Phone: 607-254-6203
Email: tennant(at)
Donald M. Tennant is the Director of Operations at the Cornell NanoScale Facility (CNF) where he has managed the day to day operations since 2006. Prior to this Don enjoyed a 27-year career at Bell Labs, where he was a Distinguished Member of Technical Staff and managed the Advanced Lithography Group in the Nanofabrication Research Department. From 1979 until 2006 he worked at Bell in the area of high resolution electron beam lithography and related nanostructure technology. His work has had significant impact on a wide range of disciplines, including: soft x-ray imaging and extreme ultraviolet lithography (EUVL), high precision grating production for DWDM (dense wavelength division multiplexing), and gate technology for both high performance circuit applications and the exploration of the practical limits of silicon technology. His collaborative efforts with SUNY Stonybrook and Brookhaven National Laboratories have resulted in important advances in the field of x-ray optics and microscopy. He has authored or co-authored over 200 articles in these fields, organized major international conferences on the subjects, presented numerous invited technical talks and posters, and has been awarded eleven U.S. patents. He currently serves on the Advisory Committee and is the Financial Trustee for the International Conference of Electron, Ion, and Photon Beams and Nanotechnology (EIPBN). He has served on a number of scientific review panels for the National Labs. He is a Past Chairman of the Nanoscale Science and Technology Division of the AVS, is a member of the scientific advisory boards for Lawrence Berkeley National Labís Molecular Foundry and Argonne National Labís Center for Nanoscale Materials and has served as a panelist for the National Research Council of the National Academies. The focus of his efforts at the Cornell NanoScale Facility are to lead this comprehensive nanofabrication and characterization facility into new and expanded areas of expertise and to offer frontier capabilities to researchers for interdisciplinary projects and education.
Don is the author of "Tennant's Law" -- At = 4.3 R5. Read more at and

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