Asymmetric fluid-structure dynamics in nanoscale imprint lithography
Asymmetric fluid-structure dynamics in nanoscale imprint lithography
Asymmetric fluid-structure dynamics in nanoscale imprint lithography
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( )2πR−1.5clamp<strong>in</strong>g length of 1.5 <strong>in</strong>ches, this gives total of L eff= . The result<strong>in</strong>g3stiffness of each segment of the flexure r<strong>in</strong>g is 1.2 × 10 4 N/m. Each segment ofthe flexure will deflect 2 mm for a 24 N (5.4 lb) load.Table 5.1 summarizes the stiffness of each component <strong>in</strong> the actuationarm. The actuators are the most compliant members of the RPU leg. As seen <strong>in</strong>Figure 5.2, the members of the RPU leg are connected <strong>in</strong> series, thus the<strong>dynamics</strong> of the mechanical system are governed by the actuator stiffness. Tosee this po<strong>in</strong>t, take a simple case with two l<strong>in</strong>ear spr<strong>in</strong>gs <strong>in</strong> series. The equivalentstiffness of such a system isIf k2