picometer


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picometer

One trillionth of a meter. Pronounced "pee-co-meter," picometers are used to measure atomic structures. See nanometer.
References in periodicals archive ?
Given the trend to tightening tolerances in precision machining and the goal of a factor of 100 for NIST to surpass the tightest tolerances in the manufacturing it supports, NIST would be expected to provide measurements with uncertainties of the order of tens of nanometers to support what has been called the "normal precision machining" regime and of the order of tens of picometers to support the "ultra-precision" regime.
Development of a compact high-load PZT-ceramic long-travel linear actuator with picometer resolution for active optical alignment applications, Proceedings of SPIE: Optomechanical Technologies for Astronomy 62731: 1-5.
"The instruments and methods are incredibly precise and capable of deforming the sample at the picometer scale (about 100 times smaller than an atom), which means literally stretching the bond lengths, and simultaneously measuring the forces at the piconewton level, as well as various other properties.
In many cases, atomic positions need to be known with a precision of 1 picometer ([10.sup.-12]m) or better which is beyond the current resolution limits of even aberration-corrected TEM.
A manufacturer says it has a motion controller that can work with a line of piezoelectric linear motor actuators to deliver resolution measured in picometers. One picometer is one-thousandth of a nanometer.
The measurement of the indentation depth is carried out with a resolution in the picometer or nanometer range.
One of the most powerful aspects of LEED is that it can have a resolving power on the order of a picometer, much smaller than individual atoms.
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