Design and Analysis of a Wetting Lens for the Pinhole Cameras of a Two Phase Flow System

A. K. Reddy[1], T. Satyanarayana[1]
[1]Lakireddy Balireddy Autonomous College of Engineering, Mylavaram, A.P., India
Published in 2013

The present work reports the fabrication process of micro lens for pinhole cameras, modeled using COMSOL Multiphysics®, by satisfying the wetting properties. Wetting is a change in contact angle between the liquid and solid surface area. The wetting properties are clearly understood in terms of forces. The two immiscible fluids were taken for the formation of fluid-fluid and wall-fluid interfaces to obtain boundary conditions and contact angle for the lenses, respectively. When a voltage (force) is applied over the lenses, the contact angle alters and hence the focal length of the lenses varies accordingly; this is called the electro-wetting effect. The wetting lenses with different conducting fluids for the same insulating fluid have been designed and analyzed for their focal lengths of different input potentials.