... Traditional measurement techniques used to evaluate wear estimates of retrievals are qualitative in nature or lack resolution leading to over- or underestimation of wear volume. The purpose of the study was to utilize new imaging techniques such as three-dimensional laser scanning to measure...

... field concentrations. 3. It must be able to repeat measurement at intervals of a few seconds. This paper demonstrates the method, discusses equipment used and shows results of measurements of a number of WDG's. Water dispersible granules laser scanning particle size measurement instrument...

... There is a recognized need for standard artifacts with which to calibrate the laser-scanning instruments which detect and monitor microcontamination on semiconductor wafers. Although commercial calibration wafers are available for this purpose, the present paper proposes the use of National...