We all have experienced a major trouble of modern display screens called glare while watching television in complete darkness, using a computer while sitting underneath overhead lighting or near a window, or taking a photograph outside on a sunny day with our Smartphone. The reflection of light from these surfaces makes it very difficult to see the information displayed on the screen. Some of the mobile companies promise to provide anti glare glasses.
Now, scientists at the Centre for Functional Nonmaterial’s (CFN) have developed a method for reducing the surface reflections from glass surfaces to nearly zero just by engraving very small nanoscale features into the screen. Whenever light encounters an abrupt change in refractive index a portion of the light is reflected through it. The latest nanoscale features have the ability of making the refractive index change gradually from that of air to that of glass. In this way they avoid reflections.
By using this technique reflections are reduced in such amount that makes the glass essentially invisible. The invisible glass could enhance the energy-conversion capacity of solar cells by minimizing the amount of sunlight lost to refection. The method called self-assembly, is used which is the ability of certain materials to automatically form ordered arrangements themselves to texture the glass surfaces at the nanoscale. Through this experiment solar cell efficiency could be enhanced and it will improve experience with electronic displays.
By- Anita Aishvarya