300 standard reference materials (SRMs) created by NIST. SRMs are used by scientists and researchers, regulatory agencies, and manufacturers the world over, serving as the basis for NIST traceable calibration an
Illustration showing how traceable calibration of an optical microscope can correct for instrument imperfections that would otherwise result in misalignment of quantum dots with photonic components. Credit: S. Kelley/NIST The NIST team created two types of traceable standards to calibrate optical microscope...
Eppeldauer, G.P., Podobedov, V.B., "NIST traceable measurements of radiance and luminance levels of night- vision-goggle test-instruments", in Proc. of SPIE 9071, p. 9071OQ-4 (2014).Eppeldauer, G. P., Podobedov, V. B.: NIST traceable measurements of ...
including colleagues from the Joint Quantum Institute (JQI), a research partnership between NIST and the University of Maryland, created standards and calibrations that were traceable to the International System of Units (SI) for optical microscopes used to guide the alignment of quantum dots. ...
A calibration certificate provides required information on the weight to make the weight traceable to International System of Units (kg). The calibration laboratory also keeps a record of the calibration and all data that was used to make...
againstaparallelarrayofturbinemeterworkingstandards,whichinturnaretraceabletoapressure-volume- temperature-time(PVTt)primarystandard.Thecalibrationflowrangeextendsfrom0.7actualm 3 /sto 10.7actualm 3 /swithanexpandeduncertaintyaslowas0.23%athighflows,andincreasingtoalmost0.35%at ...
calibration, others use complex imaging systems and microscopes; some take data over many minutes, and therefore, can't track dynamic changes, and some are not traceable to the International System of Units," said inventor Greg Cooksey, a biomedical engineer in NIST's Physical Measurement ...
The photometric responsivities of the eight standard photometers are calibrated annually against the spectral responsivity scale which is traceable to the NIST High Accuracy Cryogenic Radiometer (HA...Ohno, Y., Cromer, C. L., Hardis, J. E., and Eppeldauer, G.: The detector-based candela ...
This includes the establishments of the reference standards (standardizing machines and diamond indenters) traceable to fundamental measurements of force, time, and length, and of the reference testing conditions (a standardized common testing cycle) based on an international agreement. Standard grade ...
calibrationtraceabilityThe National Institute of Standards and Technology (NIST) has a multifaceted program in atomic force microscope (AFM) dimensional metrology. There are two major instruments being used for traceable AFM measurements at NIST. The first is a custom in-house metrology ...