Srinivasan Raghavan

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Most methods for optical visualization beyond the diffraction limit rely on fluorescence emission by molecular tags. Here, we report a method for visualization of nanostructures down to a few nanometers using a conventional bright-field microscope without requiring additional molecular tags such as fluorophores. The technique, Bright-field Nanoscopy, is(More)
Nanocomposites , with superior material properties, have promising potential applications in almost every field. The present work aims at obtaining the nanocomposites of aluminum nanoparticles that are uniform ly dispersed in a polymer matrix and carbon nanotubes (CNTs) that are consistently cross-linked and with the desired orientation in a polymer matrix(More)
Kinematic modeling has been shown to be important for the understanding and control of co-rotating twin screw extruders. The residence time distribution (RTD) is often used to characterize the steady-state behavior of an extrusion process. Due to the complex rheological behavior of polymer flow in the extruder, few have felt that the RTD would be(More)
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