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Projects/Programs

Displaying 26 - 50 of 90

Graphene

Ongoing
Two remarkable features of graphene that are opening avenues to multiple applications are its high transport carrier mobility and the broad tunability of its electronic properties. Graphene charge carriers can be tuned continuously from negative carriers (i.e., electrons) to positive carriers (holes

Hardness Standardization and Measurements

Ongoing
DESCRIPTION Purpose: Provide measurement traceability for the Knoop, Rockwell, and Vickers hardness scales and for coating thickness measurements that are based on magnetic methods. Goals: Harmonization of hardness and coating thickness testing protocols, in pursuit of reduction of measurement

Illicit Narcotics Detection

Ongoing
“Method for evaluating ion mobility spectrometers for trace detection of fentanyl and fentanyl-related substances”, Jennifer R Verkouteren, Jeffrey Lawrence, R Michael Verkouteren and Edward Sisco, Analytical Methods, 11(47), 6043-6052 (2019). “Discriminative potential of ion mobility spectrometry

Inorganic Phase Equilibrium Data

Ongoing
Every deliberate effort to develop a new material or to improve processing begins with chemical composition and the conditions (temperature, pressure) under which pure compounds and their mixtures are stable ( an equilibrium phase diagram ). In the absence of such information, materials scientists

Ion Mobility Spectrometry

Ongoing
IMS employs a drift tube with an applied electric field to separate ionized molecules based on their mobility. The technique is robust and capable of differentiating a wide range of drug and explosive molecules. Recent work has sought to investigate the utility of IMS for screening of illicit

Magnetic Imaging

Completed
Advanced magnetic devices and storage media will rely on ultra thin ferromagnetic films; since such films are quasi two-dimensional magnets, they can have strong perpendicular magnetic anisotropy (PMA). Optimization of future materials, including improved yields, requires an ability to measure film

Magnetic Sector Secondary Ion Mass Spectrometry

Ongoing
Magnetic sector SIMS uses high energy “primary” ions to bombard the surface and liberate “secondary” ions much like in ToF-SIMS, but the ion beam is operated continuously to maximize duty cycle. The high ion dose is preferred for depth profiling, where the concentration of elements and isotopes are

Measurements of Point-Defect Chemistry in Complex Oxides

Ongoing
Project Goal: To develop magnetic resonance, x-ray absorption, electron diffraction, and electrical conductivity measurements to better characterize dilute concentrations of point defects in oxide materials and effectively correlate electro-mechanical properties to measured defect chemistry. Oxide

Measuring Intermolecular Interactions with Electro-Acoustic Spectroscopy

Ongoing
We have a number of opportunities to collaborate with us. See below for details. What does this project aim to do for the chemical industry? Many industrial processes depend on the intermolecular environment- the solvents and ions that surround a molecule. These interactions impact separations

Membranes for Clean Water

Completed
Impact Access to affordable, clean water is vital to the nation's economic growth and security. Polymer-based membrane separation technologies based on reverse osmosis, forward osmosis and nanofiltration will play an increasingly critical role in the production of clean, safe water. In order to

Metrics for Reactive Wetting in Complex Systems

Completed
From fundamental physical considerations, we have derived a set of partial differential equations describing wetting and spreading. These equations are derived using a variational thermodynamic principle applied to a two-component alloy system with three (vapor, liquid and solid) phases. The method

Metrologies for Non-linear Materials in Impact Mitigation

Ongoing
Overview This project develops fundamental structure-property measurements on model materials and novel material chemistries from quasi-static to dynamic rates. The goal is to foster a materials by design approach for novel energy dissipation and force re-direction mechanisms. Processing-Structure

Metrology of Magnetic Materials

Ongoing
Currently, the bulk of this project is focused on three main pieces: Thermal MagIC: An SI-Traceable Method for 3D Thermal Magnetic Imaging and Control Magnetic Refrigeration Magnetic Standard Reference Materials (SRMs) Thermal MagIC (MAGnetic Imaging and Control) is focused on developing new

Microplastic and Nanoplastic Metrology

Ongoing
The Micro and Nanoplastic (MNP) Metrology Project aims to develop a toolbox of methods for size-based separations from complex matrices, chemical characterization protocols, and test materials necessary to enable quantification of micro- and nano-sized plastic particles, a need articulated by our

Microsystems for Harsh Environment Testing

Completed
Classically, measurement of the mechanical properties and reliability of bulk-scale materials is performed with macroscopic specimens and methods. Specimen preparation limitations, miniaturized load-frame tooling problems, and inadequate understanding of the roles of specimen size and constraint on

Modeling Dispersion Rheology for Non-Spherical Particles

Completed
The goal of this MGI project is to establish an interactive database, generated by sophisticated modeling, such as dissipative particle dynamics and smooth particle hydrodynamics, to compute the rheological properties of polymer composites, where interaction among inclusions, inclusion particle

Moiré Systems

Ongoing
Twisted double bilayer graphene The moiré systems of magic angle twisted bilayer graphene (MATBG) and related heterostructures support topological bands with nonzero Chern number, which is derived from the Berry curvature of the Bloch wave functions. Berry curvature is intimately related to orbital

Multifunctional 3D Printable Polymer-Metal Composites

Ongoing
Recent advances in additive manufacturing (AM) have positioned metals and polymers as two key materials. Typically, AM of these two materials involves incompatible methods and conditions. The novel multifunctional polymer-metal composites in this project incorporate low-melting alloys with

Nanocalorimetry Measurements

Ongoing
Accurate thermodynamic measurements are essential to understand fundamental properties of materials, providing direct and quantifiable insight into the thermodynamics of thin film reactions and phase transitions. Going forward, new classes of materials may only be synthesized as thin films, a scale

Nanoscale Property Measurements by Atomic Force Microscopy

Ongoing
Over the past several decades, Atomic Force Microscopy (AFM) has advanced from a technique used primarily for surface topography imaging to one capable of characterizing a range of chemical, mechanical, electrical, and magnetic material properties with nanometer resolution. Such characterizations
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