Steven R. Gillmer

TL;DR: A compact, fiber-coupled, six degree-of-freedom measurement system which enables fast, accurate calibration, and error mapping of precision linear stages is presented and has the advantages of simplicity, compactness, and relatively low cost.

TL;DR: In this paper, the authors presented a compact heterodyne system capable of simultaneously measuring Z-displacement along with changes in pitch and yaw using a single measurement beam incident on a plane mirror target.

TL;DR: This sensor has the highest reported dynamic range for optical roll sensing and the working principle is presented, and a 43° usable working range with 0.002° resolution is experimentally validated.

TL;DR: In this article, an analytical model is presented to predict the scaling of differential phase signals based on fundamental Gaussian beams, where the angular change is measured using a weighted phase average between symmetrically adjacent quadrant photodiode pairs.

TL;DR: In this paper, a brittle macro-scale failure model is established and validated with experimental results, based on an effective fracture toughness from previously published work that is incorporated through Griffith's law, which is useful in the selection of nanomembranes for particular applications and will help guide the design of materials with improved strength.