John Henry J. Scott

Staff Employment

NIST
NRC Postdoc
September 1997 to August 1999

As a Postdoctoral Fellow in the Surface and Microanalysis Science Division, working with Dale Newbury (Link), I completed projects involving energy-filtered transmission electron microscopy (EFTEM), quantitative EELS, energy-dispersive x-ray spectrometry (EDS), scanning transmission electron microscopy (STEM), neutron and x-ray diffraction, and Monte Carlo simulation. I was responsible for the maintenance and operation of a field emission TEM/STEM and oversaw the installation of an Emispec Vision data acquisition system and a Gatan multiscan CCD camera. While assisting with smaller projects I acquired hands-on experience with environmental scanning electron microscopy (ESEM), wavelength-dispersive spectroscopy (WDS), and a variety of microscope automation, data acquisition, and quantitative analysis systems from different vendors.

Carnegie Mellon University
Postdoc
August 1996 to August 1997

During a one year postdoctoral appointment with Sara Majetich (my PhD advisor) I conducted research on magnetic nanoparticles and thermal plasma synthesis using a 50 kW RF plasma torch. While collaborating with the Materials Science and Engineering Department, I helped resurrect a Vacuum Generators HB-501 dedicated STEM. This included changing the field emission source, resolving vacuum problems, and some minor electronics troubleshooting and repair. Before leaving, I participated in the early planning to retrofit a parallel EELS spectrometer to the top of the VG column.

Carnegie Mellon University
Graduate Student
September 1993 to July 1996

Ph.D. Thesis:
"Morphology and Growth of Carbon-Arc Nanoparticles".
Advisor:
Dr. Sara Majetich (Bio) (Research)

Logicon
Physicist
December 1991 to August 1993

After one year of graduate school at CMU, I took a leave of absence from the Physics PhD program to live with my wife Keana as she finished school at Caltech and got her first job in Los Angeles. During this time I worked for the Strategic and Information Systems Division at Logicon, Inc. Under contract with the Department of Defense, I enhanced models for predicting detailed strategic threats against US weapon systems and target complexes for the Joint Staff (J-8, Force Structure, Resource, and Assessment Directorate). I also performed nuclear weapons exchange simulations, designed and implemented an embedded relational database system, and worked on optimization algorithms for nuclear sorties.

U.S. Naval Research Laboratory
Physicist
May 1990 to August 1990

As a summer student in the NRL Acoustics Division, I supported underwater acoustics and anti-submarine warfare experiments involving phased array systems, delay-and-sum beamforming, and sound speed profile modeling. Some of the signal processing techniques I worked with included matched filtering, matched field processing, and deconvolution of noise from acoustic transfer functions.

Areas of Expertise

Awards

Gold Medal Award

Department of Commerce Gold Medal Award, for development and delivery of an AI-enhanced materials analysis system.

Gold Medal Award

Department of Commerce Gold Medal Award, for measurement science and standards in support of US capabilities in nuclear non-proliferation.

Bronze Medal Award

Department of Commerce Bronze Medal Award, for exceptional innovation in dimensional and chemical measurements at the nanoscale.

Bronze Medal Award

Department of Commerce Bronze Medal Award, for excellence in editing and publication management of articles for the Journal of Research of the National Institute of Standards and Technology.

Publications

Evaluation of Flaw Detection Algorithm Using Simulated X-Ray Computed Tomography of Ground Truth Data

October 4, 2023

Author(s)

Felix Kim, Adam L. Pintar, John Henry J. Scott, Edward Garboczi

A framework to generate simulated X-ray computed tomography (XCT) data of ground truth flaws was developed for evaluation of flaw detection algorithms. The

Investigation of manufacturing techniques to develop controlled flaws for X-ray computed tomography reliability assessment

April 25, 2023

Author(s)

Felix Kim, Sarah Robinson, Nikolai Klimov, John Henry J. Scott

Various micro and nano-manufacturing techniques were investigated to create controlled flaws for X-ray computed tomography (XCT) phantoms. We explored the use

A Roadmap for LIMS at NIST Material Measurement Laboratory

April 11, 2022

Author(s)

Gretchen Greene, Jared Ragland, Zachary Trautt, June W. Lau, Raymond Plante, Joshua Taillon, Adam Abel Creuziger, Chandler A. Becker, Joe Bennett, Niksa Blonder, Lisa Borsuk, Carelyn E. Campbell, Adam Friss, Lucas Hale, Michael Halter, Robert Hanisch, Gary R. Hardin, Lyle E. Levine, Samantha Maragh, Sierra Miller, Chris Muzny, Marcus William Newrock, John Perkins, Anne L. Plant, Bruce D. Ravel, David J. Ross, John Henry J. Scott, Christopher Szakal, Alessandro Tona, Peter Vallone

Instrumentation generates data faster and in higher quantity than ever before, and interlaboratory research is in historic demand domestically and

A Comparison of Particle Size Distribution and Morphology Data acquired using Lab-based and Commercially Available Techniques: Application to Stainless Steel Powder

November 17, 2021

Author(s)

Justin Whiting, Edward Garboczi, Vipin Tondare, John Henry J. Scott, Alkan Donmez, Shawn P. Moylan

The particle size distribution (PSD) and particlemorphology ofmetal powders undoubtedly affects the quality of parts produced by additivemanufacturing (AM). It

Uncertainty of particle size measurements using dynamic image analysis

May 14, 2019

Author(s)

Justin G. Whiting, Vipin N. Tondare, John H. Scott, Thien Q. Phan, M A. Donmez

Metal powder particle size and size distribution (PSD) are critical factors affecting powder layer density and uniformity in additive manufacturing processes

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Staff Employment

Carnegie Mellon University
Graduate Student
September 1993 to July 1996

Ph.D. Thesis:
"Morphology and Growth of Carbon-Arc Nanoparticles".
Advisor:
Dr. Sara Majetich (Bio) (Research)

Areas of Expertise

John Henry J. Scott (Fed)

Physicist (Div 643) and Sr. Advisor (Div 641)

Awards

Publications

Evaluation of Flaw Detection Algorithm Using Simulated X-Ray Computed Tomography of Ground Truth Data

Investigation of manufacturing techniques to develop controlled flaws for X-ray computed tomography reliability assessment

A Roadmap for LIMS at NIST Material Measurement Laboratory

A Comparison of Particle Size Distribution and Morphology Data acquired using Lab-based and Commercially Available Techniques: Application to Stainless Steel Powder

Uncertainty of particle size measurements using dynamic image analysis