Glare From Smartphones Can Be Purged With The New “Invisible Glass” Nanostructure
If you have ever used a computer while being seated near a window or under an overhead light, clicked an image outside with your smartphone on a sunny day, or watched TV in anything but complete darkness, you have encountered a key trouble of modern displays: glare. Majority of electronics devices of today are provided with plastic or glass covers for safety against moisture, dust, and other environmental contaminants; however, light reflection from such surfaces can make it difficult to read the data presented on the screens.
But no need to worry as scientists from the US CFN (Center for Functional Nanomaterials) and the IISER (Indian Institute of Science Education and Research), Pune, have developed an invisible glass that will enable reading from a smartphone even in bright sunlight. The team showed a technique for decreasing the surface reflections from the surface of the glass to nearly zero by engraving small nanoscale traits into them.
A part of the light is reverted whenever light rapidly goes in one interface from another. The nanoscale traits have the impact of making the refractive index alter steadily to that of glass from that of air, thus circumventing reflections. The nano-textured, ultra-transparent glass is anti-reflective over the complete near-infrared & visible spectrum and also across a broad array of viewing angles. The rate of reflections is decreased to such an extent that the glass effectively becomes imperceptible.
Apart from just enhancing the experience of users for electronic displays, the invisible glass can even improve the solar cell’s energy conversion efficacy by curtailing the amount of sunlight gone to refection. It can also be a potent option to the damage-prone antireflective coatings traditionally utilized in the lasers that release powerful light pulses, such as those implemented in the production of aerospace components and medical devices.
Charles Black, CFN Director, said, “We’re thrilled about the potential. Not only is the efficiency of these nano-structured matters tremendously elevated, but we are also applying initiatives from nanoscience in a mode that we consider is favorable to large-scale manufacturing.”
An assistant professor, IISER Pune, Atikur Rahman, said, “This easy method can be utilized to nanotexture nearly any material with defined control over the nanostructures’ shape and size. The best part is that you do not require a distinct coating layer to decrease glare. Also, the nanotextured surfaces surpass any coating material existing today.”
Andreas Liapis said, “As our final structure is made completely of glass, it is more long-lasting than traditional anti-reflective coatings.”