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Recent advances in nanofabrication and nanobiotechnology rely on biomacromolecules. In biotechnology, biomacromolecules at nanometer length scales are either
Electron, ion and photon-based microanalysis methods, instrumentation and protocols are developed to advance measurement science towards the elemental and
Advanced experimental and theoretical methods are developed to increase the accuracy and precision of X-ray line energies and information derived from X-ray
Advanced microscopy and spectroscopy techniques are used in this project to study the chemical and physical properties of particles contained in complex
The National Institute of Standards and Technology operates two spectral comparator facilities, both of which are used to provide detector calibrations from the
To compare the calibration capabilities for the spectral responsivity in the vacuum-ultraviolet spectral region between 135 nm and 250 nm, PTB and NIST agreed
Calibrations of the The Extreme ultraviolet/X-ray Irradiance Sensor (EXIS), which will be installed on the Geostationary Operations Environment Satellite R
Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The values are
Electronic structure information obtained with photoemission-based measurements provides a keystone in understanding emerging quantum materials, and the unique
The extreme ultraviolet detector (EUVD) calibration service disseminates the U.S. national scale of detector responsivity in the wavelength range from 5 nm to
In the vacuum ultraviolet and extreme ultraviolet (EUV), the indices of refraction of all materials become complex: N = n + ik, or N = 1- d + ik. Here, n is the
Condensed matter dynamics can evolve on a subpicosecond timescale, too fast to follow using many characterization techniques. We use femtosecond optical pulses
Dual-comb spectroscopy is a technique that allows one to exploit the coherence, accuracy, and resolution of frequency combs for precision molecular spectroscopy
Recent advances in dual-comb spectroscopy enable new opportunities in accurate and precise open-path atmospheric sensing of multiple atmospheric gases critical
Accurate measurements of atomic wavelengths, energy levels, oscillator strengths and isotope and hyperfine structure using diffraction grating spectrographs
A bilateral intercomparison of calibrations performed at the Metrology Light Source (MLS) of the Physikalisch-Technische Bundesanstalt (PTB) in Berlin, Germany
Our research focuses on the use of trapped ions for precision measurements. In particular, we are interested in optical frequency metrology, which provides the
Much of the activity of the UV Physics Group is aimed at supporting the R&D effort by the microelectronics industry to develop Extreme Ultraviolet Lithography
The natural world is a magnificent place with observable, via measurement and inference, physical structures spanning at least 43 orders of magnitude in space
Conventional techniques for analyzing chemical composition, such as infrared (IR) microscopy often miss critically important nanoscale details. To overcome this
This project aims to develop rigorous measurements and methodology needed for determining optical and electrical properties of advanced materials that might be
PRIME (Platform for Realizing Integrated Molecule Experiments) aims to establish primary, quantum-based realizations for both the radiometric watt and kelvin