Composites

News and Updates

Building that has been destroyed by a tornado

NIST, NSF Award More Than $7.6 Million to Support Disaster Resilience Research

May 4, 2022

The agencies are funding 20 projects to be conducted across 24 institutions through the Disaster Resilience Research Grant (DRRG) program, which they manage

With Fuzzy Nanoparticles, Researchers Reveal a Way to Design Tougher Ballistic Materials

December 13, 2021

Researchers at the National Institute of Standards and Technology (NIST) and Columbia Engineering have discovered a new method to improve the toughness of

A man in a hard hard is holding a clipboard and looking towards a large wind turbine.

An Early Warning System for Damage in Composite Materials

February 18, 2020

A team at the National Institute of Standards and Technology (NIST) has developed a tool to monitor changes in widely used composite materials known as fiber

Projects and Programs

Nanotube Metrology

Ongoing

Nanotube metrology improvement is a significant effort in the Particles, Tubes and Colloids project dedicated to improving the measurement methods for, and

Macromolecule and Nanoparticle Composition and Architecture

Completed

We develop quantitative methods for the analysis of macromolecules having complex architectures and nanoparticles having organic functionalities. Our approaches

Hierarchical Materials

Ongoing

Nature utilizes a hierarchy of length scales and tiered structure to build lightweight, strong, and tough materials. Engineers look to exploit the advantage of

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

Publications

Thermal Shrinkage Reveals the Feasibility of Pulse-delay Photocuring Technique

April 13, 2022

Author(s)

Sri Vikram Palagummi, Taeseung Hong, Li Jiang, Martin Chiang

Objectives: To resolve applicability of the pulse-delay photocuring technique to restorative dental composites as a clinical strategy for the reduction in the

Resin Viscosity Determines the Condition for a Valid Exposure Reciprocity Law in Dental Composites

January 28, 2022

Author(s)

Sri Vikram Palagummi, Martin Chiang, Taeseung Hong, Zhengzhi Wang, Chang Kwon Moon

Objective: To provide conditions for the validity of the exposure reciprocity law as it pertains to the photopolymerization of dimethacrylate-based dental

Fire Performance of Upholstery Materials: Correlation between Cube Test and Full-Scale Chair Mock-Ups

November 17, 2021

Author(s)

Mauro Zammarano

In our previous work, the fire performance of seven upholstery materials combinations - including six barrier fabrics, one cover fabric and one flexible

Activation of Mechanophores in a Thermoset Matrix by Instrumented Scratch

November 17, 2021

Author(s)

Chelsea S. Davis, Jeremiah Woodcock, Ryan Beams, Mitchell Rencheck, Muzhou Wang, Stephan J. Stranick, Aaron M. Forster, Jeffrey Gilman

Scratches in polymer coatings and barrier layers negatively impact optical properties (haze, light transmission, etc.), initiate routes of degradation or

Software

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

Positron Annihilation Lifetime Spectrometer

Positron annihilation lifetime spectroscopy uses positrons to probe material defects/voids/free volume at the sub-nm scale. The general working principle is

Picture of the sample area of the NIST X-ray Adsorbtion Fine Structure instrument, with NIST scientist Bruce Ravel, located at the National Synchrotron Light Source.

X-ray Absorption Fine Structure (XAFS)

The XAFS station uses a tunable, monochromatic, and moderately high energy X-ray beam (4.5 keV to 23.5 keV) for X-ray absorption spectroscopy measurements. The

High Throughput (Combinatorial) Screening Tool for Characterization of Thin Film Thermoelectrics as a Function Temperature

High-throughput (combinatorial) metrologies have evolved as a useful approach to rapidly determine the composition-structure-property relationships for novel

Fourier Transform Infrared Spectroscopy

Fourier Transform Infrared (FTIR) Spectroscopy is a spectroscopic technique in which the vibrational modes of the molecules comprising a material of interest

Awards

2017 American Physical Society Fellow

Congratulations to Chris Stafford (Functional Polymers Group) for being selected as a Fellow of the American Physical Society for 2017. He

image of a 3D volume reconstruction of a forest of carbon nanotubes (CNT) embedded in epoxy

Natarajan Wins FEI Image Award

One of the November winners of the 2016 FEI Image Contest