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Since the first computers were developed, their performance has mainly depended on increasing the density of transistors on monolithic chips. However, as we...
Project activities include: Electronic structure of semiconductor-oxide interfaces. Thermodynamics of flexible microporous materials for gas storage Gas adsorption in microporous materials Analysis of topological materials, including magnetic topological insulators High-throughput screening of...
EPR spectroscopic methods to measure distances in the nanometer range, collectively referred to as pulsed dipolar spectroscopies, have been applied to biomacromolecular systems containing a pair of spin labels (nitroxide spin labels) to determine tertiary/quaternary structures and to follow...
Conventional transmission electron imaging does not necessarily show both strong contrast and high spatial resolution for nanomaterials or soft matter. This is particularly the case for isolated nanostructures or low- Z materials like polymers or biomaterials. For example, consider structures in the...
Atomistic simulations are increasingly being used as a tool to understand and predict properties of materials in systems, such as nanomaterials, where direct measurement is time-consuming or extremely difficult. The success of atomistic simulations depends critically on the fidelity of a specific...
Ian Haygood, Bochao Xu, John Biesecker, Michael Schneider
We report on a cryogen-free scanned SQUID microscope operating at 4 K, with the capability of up to 40 RF (40 GHz) connections to a device under test. The...
Jeffrey Fagan, Richard Castellano, Da-Chi Yang, Sei Jin Park, Pavel Shapturenka, Robert Praino, Francesco Fornasiero, Jerry Shan
The efficient measurement of the length distribution of nanotubes, nanowires, and other 1D nanoparticles in solution is important to enable their incorporation...
Tariq Fahmi, Robert Gutierrez, Ana Barrios, Tae Joon Cho, John Elliott, Sanghamitra Majumdar, Bryant Nelson, Aaron Johnston-Peck, Alessandro Tona, Anil Patri, Elijah Petersen
Assays to detect potential biocompatibility issues can play a key role in supporting the development of new technologies such as medical products containing...
Jeffrey Fagan, Paul Finnie, Jianying Ouyang, Adam Wind, Pavel Shapturenka
Chirality pure single-wall carbon nanotubes (SWCNTs) are ideal samples for resonant Raman scattering (RS) as they have molecule-like optical transitions and...
An electron hologram is a fringe modulated image containing the amplitude and phase information of an electron transparent object. The HolograFREE routines
The Material Measurement Science Division at NIST performs surface chemical analysis using X-ray Photoelectron Spectroscopy (XPS) with capabilities for routine
Field evaporates (with a voltage and laser pulse) a sharp tip-shaped specimen. Collects the ionization products in a position-sensitive, time-of-flight mass
Dual beam focused ion beam/scanning electron microscope (FESEM). Focused ion beam using Ga atoms allows the patterning of objects at ~10 nm level (milling and
For pioneering measurement methods of nanomaterials toxicity that now underpin industry and public sector assessments of the environmental, health, and safety impacts of technologically important products, such as carbon nanotubes.