A 1.5 micrometer Aluminum film is deposited over a flat field oxide region and patterned with photoresist. The Aluminum is then etched. The selectivity of Al over photoresist is 5. Assuming a 10% over etch, what is the initial photoresist thickness required to ensure that the final photoresist thickness is 100 nm

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10