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The Programmable Josephson voltage standard (PJVS) is an instrument that generates stable, quantum-accurate, direct-current (DC) voltages that are programmable
The Portable Vacuum standard (PVS) is an instrument that measures pressures with accuracy approaching that achieved at national standards laboratories. The PVS
Precision micro-machined apertures are fabricated from silicon on insulator (SOI) wafers. Lithographic processing allows great flexibility in the aperture
The NIST Standard Reference Photometer (SRP) is a photometric instrument that accurately measures concentrations of ozone (O 3) in air up to 1000 nmol/mol by
The Josephson Arbitrary Waveform Synthesizer (JAWS) is a primary voltage standard that generates alternating-current (ac) waveforms that have quantum accuracy
Precision semiconductor nanostructure arrays are grown by molecular beam epitaxy (MBE) on a prepatterned substrate. Following buffer layer deposition, the
The optical radiometric measurement system was developed at NIST to take advantage of the laser-based calibration facility available at NIST. The measurement
SRI 6014 is a packaged photovoltaic (PV) cell that is calibrated to give the irradiance spectral responsivity and the short circuit current, I sc, of a 20 mm PV