Many tea drinkers know about tannins, those pesky molecules that stain teeth and ceramic mugs. Last year, John L. Lombardi, a green tea drinker, learned that makers of hard-disk drives were thirsting ...

The lapping process involves thinning wafers from the back with a rotating abrasive surface. It is important to receive precise feedback as the process is carried out to monitor the quantity of ...

During lapping, a spinning abrasive surface is used to thin wafers from the backside. As the process progresses, precise feedback is required to monitor the amount of material removed and determine ...