AE waves can be measured using sensitive transducers, which respond to surface displacements of several picometers
Operated by the company's new E755 nanopositioning motion controller, they have a mechanical accuracy within 25 picometers
The new controllers will enable better than 100 picometers
command resolution for even the latest generation, long-travel, piezo nanopositioning systems (1 mm and up), such as the PlHera series closed-loop flexure stages.
For step heights, measurement uncertainties in the subnanometer range - and for measurements of the mean structure spacing on extensive lattice standards even in the range of 10 picometers
- have been achieved and confirmed in comparison with optical diffraction measurements.
The electro-optic coefficient(, a figure representing the level of change in the refractive index, was verified as being 76 picometers
per volt (76pm/V) with infrared light.
After modifying the noise signal amplitudes (so they were less than the FEM signal amplitudes) and changing the units to picometers
, the signals were examined to determine their consistency.
It was found that the "stabilized" FBGs actually drift slightly with time (a few picometers
Increasingly, tens of picometers
accuracy (peak to peak) is required.
0] they were less than the FEM signal amplitudes) and changing the units to picometers
, the noise signals were examined to determine their consistency.