Method for fabrication of microlens

The present invention provides a cost effective, facile method for fabrication of microlens including plano-concave microlens from polydimethyl siloxane mould formed on core forming substance using soft-lithography techniques. The present invention further provides a plano-concave microlens which, by itself, or the plano-convexmicrolens fabricated from the plano-concave microlens structure as a template capable of being used in a variety of applications