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XY Parallel Compliant Stage with Compact Configuration

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Abstract:

This paper presents a piezo-driven compliant stage for nano positioning with two degree-of-freedom parallel linear motions. Nano positioning is one of the most important factors in completion of nanotechnologies. It can be accomplished by flexure-based compliant stages driven by piezo-actuators. For compact configuration, the compliant stage is stacked by two-layered compliant mechanisms. The upper layer contains a motion guide mechanism, and the lower layer two displacement amplification mechanisms. The motion guide mechanism consists of four prismatic–prismatic parallel compliant joint chains for two translational motion guides. The displacement amplification mechanism is adopted by a flexure-based flextensional amplification mechanism driven by a stack-type piezo actuator. Due to the parallel compliant joint chains, the stage has the same dynamics in the x and y axes. In this study, through design and analysis, the mechanisms were machined via wire electro-discharge machining and are were then integrated with two stack-type piezoelectric elements for actuation, and two capacitive sensors for ultra-precision displacement measurement. Finally, experiments were carried out to demonstrate the performance of the compliant stage.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.6262

Publication date: July 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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