Microscopy and Microanalysis Research Group

Activities

Advanced Materials: Elemental and Chemical Analysis of Microstructured Materials

Ongoing

Electron, ion and photon-based microanalysis methods, instrumentation and protocols are developed to advance measurement science towards the elemental and

Advanced Materials: X-ray Science for Standards and Analysis

Ongoing

Advanced experimental and theoretical methods are developed to increase the accuracy and precision of X-ray line energies and information derived from X-ray

Electronic Structure and Dynamics in Quantum Materials

Ongoing

Electronic structure information obtained with photoemission-based measurements provides a keystone in understanding emerging materials with potential

Microplastic and Nanoplastic Metrology

Ongoing

The mission of the Micro and Nanoplastic (MNP) Metrology Project is to assist regulators in assessing the human health and environmental risks associated with

Nanometrology: Composition and Structure of Nanomaterials

Ongoing

Advances in methods, instrumentation and analysis protocols are developed to enhance measurement science capabilities in nanomaterial elemental and

Pushing the Limits of Measurement Accuracy in Atom Probe Mass Spectrometry

Ongoing

Atom probe microscopy was developed over 50 years ago; however, only within the last 15 years has the technique begun to see widespread use, due to the

X-ray Testbed for Breakthrough Catalyst Measurements

Ongoing

NIST’s Material Measurement Laboratory and Physical Measurement Laboratory are developing a first-of-kind X-ray testbed for operando monitoring of catalytic

Publications

Titanium and titanium oxides at the K- and L-edges: comparing theoretical calculations to X-ray absorption and X-ray emission measurements

August 2, 2023

Author(s)

Karina Bzheumikhova, John Vinson, Ranier Unterumsberger, Malte Wansleben, Claudia Zech, Kai Schüler, Yves Kayser, Philipp Hönicke, Burkhard Beckhoff

Using well-calibrated experimental data we demonstrate the applicability of theoretical X-ray absorption spectroscopy (XAS) as well as X-ray emission

Lightshow: a Python package for writing computational x-ray absorption spectroscopy input files

July 29, 2023

Author(s)

Matthew Carbone, Fanchen Meng, Christian Vorwerk, Benedikt Mauer, Fabian Peschel, Xiaohui Qu, Eli Stavitski, Claudia Draxl, John Vinson, Deyu Lu

Spectroscopy simulations are a critical tool for the interpretation of experiment, the development of new theoretical understanding, and fast screening of new

Registering Particle Data Sets Using a Rotation and Translation Invariant Nearest-Neighbor Algorithm

February 10, 2023

Author(s)

Nicholas Ritchie, Scott A. Wight, Diana Ortiz-Montalvo, Abigail P. Lindstrom

It can be useful to register (or overlay) two sets of particle data measured from the same physical sample. However, if the two data sets were collected at

Investigating the electronic structure of high explosives with x-ray Raman spectroscopy

November 14, 2022

Author(s)

Oscar Ariel Paredes Mellone, Dimosthenis Sokaras, Trevor Willey, Michael Nielsen, John Vinson

We investigate the sensitivity and potential of a synergistic experiment-theory X-ray Raman spectroscopy (XRS) methodology on revealing and following the static

Software

NIST DTSA-II

March 10, 2023

NIST DTSA-II builds on the best available algorithms in the literature to simulate, quantify and plan energy dispersive x-ray analysis measurements.

The measured and calculated RIXS maps at the oxygen K edge of lithium peroxide

OCEAN

February 3, 2023

OCEAN is a versatile package for calculating both optical/UV and core-edge spectroscopy. It is a first-principles code based on both ground-state density

Custom Lifetime Imaging Platform (CLIP)

CLIP is an analysis program for fluorescence lifetime images. It provides the user with the ability to fit or calculate the phasor plots for lifetime decays

Tools and Instruments

Atom Probe Tomography (LEAP 4000X Si/HR – Local Electrode Atom Probe)

LEAP 4000X Si/HR Imaging time-of-flight mass spectrometer and field ion microscope. Can deliver 3-D, isotopically- and chemically- resolved images Sub-nanometer

TESCAN MIRA3 for automated electron microscopy

A TESCAN MIRA3 Schottky field-emission scanning electron microscope with 4 30 mm 2 silicon x-ray drift detectors which has been automated for particle and

Microcalorimeter Detector

The NIST transition edge sensor microcalorimeter is energy dispersive x-ray spectrometer capable of ~5 eV resolution over a range of energies from hundreds to

X-Ray Diffractometer

The Bruker D8 defractometer is a general purpose X-ray diffraction system. The instrument features easy reconfiguration of the X-ray optics for a variety of

Awards

2022 Bronze Medal Award

Dr. Meisenkothen is honored for the development of standards-based techniques for atom probe tomography. Application of these techniques

2021 - Bronze Medal Award---Srivalli Telikepalli, Dean Ripple, Michael Carrier, Kristen Steffens, Christopher Montgomery, Nicholas W. M. Ritchie, John Lu

For development of a novel reference material that mimics the particles found in protein-based drugs and supports accurate measures of drug quality.

Terrence Jach Named American Vacuum Society Fellow

For many contributions to the development of photoemission, Auger electron spectroscopy, X-ray standing wave, and soft X-ray emission

Edward Vicenzi Honored by the Microanalysis Society

Edward Vicenzi is a NIST associate and research scientist at the Smithsonian Institution’s Museum Conservation Institute (MCI). His work

News and Updates

An electron micrograph showing a globular cluster of silver nanoparticles atop the surface of a cutting board from which it was scratched off.

Do Kitchen Items Shed Antimicrobial Nanoparticles After Use?

November 8, 2018

Because of their antimicrobial and antifungal properties, silver nanoparticles measuring between one and 100 nanometers (billionth of a meter) in size, are

Graphene Lid Revitalizes Imaging Technique

March 31, 2017

By capping liquids with graphene, an ultrathin sheet of pure carbon, researchers at the National Institute of Standards and Technology (NIST) and their

Microscopy and Microanalysis Research Group

Activities

Advanced Materials: Elemental and Chemical Analysis of Microstructured Materials

Advanced Materials: X-ray Science for Standards and Analysis

Electronic Structure and Dynamics in Quantum Materials

Microplastic and Nanoplastic Metrology

Nanometrology: Composition and Structure of Nanomaterials

Pushing the Limits of Measurement Accuracy in Atom Probe Mass Spectrometry

X-ray Testbed for Breakthrough Catalyst Measurements

Publications

Titanium and titanium oxides at the K- and L-edges: comparing theoretical calculations to X-ray absorption and X-ray emission measurements

Lightshow: a Python package for writing computational x-ray absorption spectroscopy input files

Registering Particle Data Sets Using a Rotation and Translation Invariant Nearest-Neighbor Algorithm

Investigating the electronic structure of high explosives with x-ray Raman spectroscopy

Software

NIST DTSA-II

OCEAN

Custom Lifetime Imaging Platform (CLIP)

Tools and Instruments

Atom Probe Tomography (LEAP 4000X Si/HR – Local Electrode Atom Probe)

TESCAN MIRA3 for automated electron microscopy

Microcalorimeter Detector

X-Ray Diffractometer

Awards

2022 Bronze Medal Award

2021 - Bronze Medal Award---Srivalli Telikepalli, Dean Ripple, Michael Carrier, Kristen Steffens, Christopher Montgomery, Nicholas W. M. Ritchie, John Lu

Terrence Jach Named American Vacuum Society Fellow

Edward Vicenzi Honored by the Microanalysis Society

News and Updates

Do Kitchen Items Shed Antimicrobial Nanoparticles After Use?

Graphene Lid Revitalizes Imaging Technique

Contacts

Group Leader

Office Manager

Group Safety Representative