This video by prof Mainak Das , IIT Kanpur, explains how you can create nitrogen doped graphene by one step pyrolisis of silk at 400 C. The curious fact is pyrolisis at higher temperatures drives out nitrogen and changes the optoelectronic properties of the material obtained.
Nanoscale field emission devices
The first electronic switches were made out of vaccum tubes (triodes). Semiconductor PN junctions allowed creation of solid state transistors. And now quantum tunneling effects have the potential to miniaturize vaccum tubes themselves to a nano scale with exciting new applications
#videogames #comedy #action Destroy all humans:One giant step on mankind It is the space age. Scientists are working day and night on creating tools that can help us explore the vast universe. Exciting times these. Something new is happening every day. Spotting of a new star. Discovery of a new galaxy. A creepingly polite presenter is keeping public's interest alive by conveying latest developments. Spinning up dreams about life beyond earth. Flaming the curiosity to explore new planets and develop a bond with brothers from outer space. A vision. A nightmare. It was supposed to be a regular rocket launch that day. Nothing out of the ordinary, mind you. Sure the rocket exploded mid air. But these things happen. It was not what you would call unexpected. But what was unexpected was this strange flying saucer emerging from the flames. Tentacled ,octopus like spaceship. Things took a turn for the worse very quickly from this point on. And you took control of a foul alien who has made up his mind to destroy all humans. Alien is well equipped too and gives you quite a few ways to dispose off the weaklings. Vaporize them with zap-o-matic. Hurl objects at them with psychic powers or simply onboard your ship and bur everything down with a powerful laser beam. Death from above. But don't forget to collect brainstem from your enemies as these give you useful upgrades for your weapons. Because things do get progressively tougher as the monkeys bring out their most powerful arsenal against you. Which is still pitiful compared to your firepower. As it becomes increasingly clear that alien invasion is in progress authorities find it hard to contain the panic. Newspapers do their bit by attributing destruction to freak ligting and declaring the witnesses insane but people start getting suspicious. But why are the aliens destroying the planet earth and who is this crypto 136? You'll have to play the game to find out. Destroy all humans is a title that makes you feel like a villian. If you have ever wondered what it is like to be the bad guy give this game a try. It is so very tantalizing. I mean addictive in a way to torture these puny little bags of water. Frankly speaking this game opened my mind to new possibilities. And if aliens invaded I'm not quite so sure now about whose side I would be taking. Hmm Ha ha HA HA HA HA MU HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA HA Watch it on YouTube https://t.globallinker.com/MwRrF Play it on steam https://t.globallinker.com/rmvOd