Ankur Verma

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Fabrication of nanopatterned and functionalized polymeric surfaces is an active area owing to its many important applications in the areas of nanophotonics, nanoelectronics, and templated synthesis of nanostructured materials. There are several mature technologies for the nano-fabrication of soft surfaces, mainly dominated by extreme UV and X-ray(More)
Dewetting of ultrathin ( < 100 nm) polymer fi lms and their selforganization on physicochemically patterned substrates has been extensively studied with a view to potential applications in soft-patterning. [ 1 ] However, despite their scientifi c and technological promise, there are two major limitations for self-assembled patterns: (1) The length scale of(More)
A simple and novel method to fabricate and miniaturize surface and subsurface microstructures and micropatterns in glassy carbon is proposed and demonstrated. An aqueous resorcinol-formaldehyde (RF) sol is employed for micromolding of the master pattern to be replicated, followed by controlled drying and pyrolysis of the gel to reproduce an isotropically(More)
An ultrafast, parallel, and beyond-the-master micropatterning technique for ultrathin (30-400 nm) nonabsorbing polymer films by diffraction of laser light through a 2D periodic aperture is reported. The redistribution of laser energy absorbed by the substrate causes self-organization of polymer thin films in the form of wrinklelike surface relief structures(More)
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