Numerical methods & software

News and Updates

Smart City Holistic Key Performance Indicators Support Community Benefits

NIST International Collaboration Develops New Framework for Smart Cities and Communities

February 28, 2022

Have you ever wondered what it is about a smart city or community that makes it ‘smart?’ In an international collaboration with Dr. Martin Serrano of the

NIST Researchers Develop Algorithm for Assuring Quality-of-Service in 5G/6G Networks

February 19, 2022

5G and 6G networks will differ greatly in composition and services, compared to one-size-fits-all 4G networks. 5G and 6G networks must provide varying services

Not Just a Pretty Facet: New NIST algorithm for NV center diamond magnetometry speeds up experiments by an order of magnitude

February 19, 2021

Some might call it a diamond in the rough: NV center magnetometry, which uses specially adapted diamonds to make sensitive measurements of magnetic signals, is

Projects and Programs

Modeling Dispersion Rheology for Non-Spherical Particles

Completed

The flow of polymer composites via injection molding, spraying or spreading on surfaces is crucial to polymer composite manufacturing. For single-phase liquids

Combinatorial Testing

Ongoing

Combinatorial methods can reduce costs for software testing, and have significant applications in software engineering: Combinatorial or t-way testing is a

Cyber Physical Systems and Internet of Things Program

Ongoing

The definitions of cyber-physical systems (CPS) and the Internet of Things (IoT) are converging over time to include a common emphasis on hybrid systems of

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µMAG: Micromagnetic Modeling Activity Group

Ongoing

Micromagnetics concerns the patterns of magnetization that arise in materials on the scale of nanometers. Understanding these structures is key to technologies

Publications

Simulated stress mitigation strategies in embedded 3D bioprinting

August 30, 2022

Author(s)

Leanne Friedrich, Ross Gunther, Jonathan Seppala

Extrusion-based 3D bioprinting is a powerful tool for fabricating complex cell-laden constructs. Embedded Ink Writing (EIW) is an extrusion-based printing

Surface-Normal Free-Space Beam Projection via Slow-Light Standing Wave Resonance Photonic Gratings

July 13, 2022

Author(s)

Alexander Yulaev, Daron Westly, Vladimir Aksyuk

On-chip grating couplers directly connect photonic circuits to free-space light. The commonly used photonic gratings have been specialized for small areas

How reproducible are surface areas calculated from the BET equation?

May 23, 2022

Author(s)

Johannes W. Osterreith, James Rampersad, David Madden, Nakul Rampal, Luka Skoric, Bethany Connolly, Rob Ameloot, Joao Marreiros, Conchi Ania, Diana Azevedo, Enrique VilarrasaGarcia, Bianca Santos, Daniel Siderius

Porosity and surface area analysis plays a prominent role in modern materials science, where their determination spans the fields of natural sciences

Online Service Caching and Routing at the Edge with Unknown Arrivals

May 20, 2022

Author(s)

Siqi Fan, I-Hong Hou, Van Sy Mai, Lotfi Benmohamed

Software

HVAC SIMulation PLUS other systems (HVACSIM+)

May 11, 2021

The first version of HVACSIM+, which stands for “HVAC SIMulation PLUS other systems”, was introduced by National Institute of Standards and Technology (NIST) in

NIST's Integrated Colony Enumerator (NICE)

January 4, 2021

Enumeration of bacterial colonies on an agar plate is simple in concept, but automated colony counting is difficult due to variations in colony color, size

Limits of Detection - ASTM E2677

September 12, 2018

ASTM subcommittee E54.01 has developed a Standard Test Method for the determination of Limit of Detection (LOD) in trace explosive detectors. The Method was

VCCTL Software

(Return to Cement Hydration and Degradation Modeling Software) The Virtual Cement and Concrete Testing Laboratory (VCCTL) software provides a virtual testing

Tools and Instruments

Automated Scanning Electron Microscope

The ASPEX Personal SEM (PSEM) is a tungsten filament scanning electron microscope optimized for automated particle analysis. The system was designed with

Awards

Xiao Tang - 2016 Fellow of the American Physical Society

For outstanding contributions in optical technologies and systems, with application to quantum communications, spectrometry, and digital