All the electronic devices that we use today have components made of semiconductors, mostly silicon. In recent years, gallium nitride, another semiconductor, is making its way into electronics. It is better suited for high power and high-frequency applications. Researchers from IISc have developed India’s first-ever e-mode gallium nitride power transistor, whose performance is comparable to some of the best reports till date.

On April 26 2019, scientists at the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Virgo Interferometer detected gravitational waves from a possible black hole-neutron star collision thought to have taken place 1.2 billion light years away. The event was observed by both LIGO observatories, based in Louisiana and Washington state in the USA, and the Virgo facility based in the European Gravitational Observatory (EGO) in Italy.

Researchers find a unique new technique to make stable, low-power graphene transistors

Rainbows have amazed us since the dawn of humanity—either as a divine depiction, a scientific puzzle or an epitome of beauty. These celestial arcs appear when sunlight hits airborne water droplets at some angles. For a rainbow to occur, sunlight refracts into the droplet, reflects within, and refracts out. However, what if light keeps getting reflected in a loop within the droplet?