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Eliminating Vibration in the Nano-World

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As in the macro-world, solutions to vibration problems range from simply increasing dwell time to allow settling, to using an algorithm in the controller to nullify resonance.

Scott Jordan

Until recently, photonics engineers, among others, had been powerless against settling-time bottlenecks in industrial processes that require submicron-scale precision. Their only effective ways to address fixturing and structural resonance excited by process motion had been either to slow down processes by using less aggressive motion profiles or to insert dwell times to allow mechanical damping to settle things down by converting any mechanical resonance into heat. However, as process tolerances get tighter — especially with nanoscale applications such as those involving...Read full article

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