P. K. Sundararajan

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In many important chemical processes, the laminar flow regime is inescapable and defines the performance of reactors, separators, and analytical instruments. In the emerging field of microchemical process or lab-on-a-chip, this constraint is particularly rigid. Here, we review developments in the use of chaotic laminar flows to improve common transport(More)
We study a reversal process in Stokes flows in the presence of weak diffusion in order to clarify the distinct effects that chaotic flows have on the loss of reversibility relative to nonchaotic flows. In all linear flows, including a representation of the baker's map, we show that the decay of reversibility presents universal properties. In nonlinear(More)
and HBT-N, respectively. This data clearly shows that the new process with SiN protection wall is working properly. Consequently, the base resistance, R b , is reduced by 35% and maximum oscillation frequency, f max , is enhanced by 30% (from 162 GHz to 208 GHz). Since the base resistance does not affect the transit time, f T s of the two HBTs are quite(More)
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