Graphene: Fast, Strong, Cheap, and Impossible to Use
In Last Week’s New Yorker, John Colapinto’s story explored the science behind graphene, a substance only one atom thick:
Labs around the world began studies using Geim’s Scotch-tape technique, and researchers identified other properties of graphene. Although it was the thinnest material in the known universe, it was a hundred and fifty times stronger than an equivalent weight of steel—indeed, the strongest material ever measured. It was as pliable as rubber and could stretch to a hundred and twenty per cent of its length. Research by Philip Kim, then at Columbia University, determined that graphene was even more electrically conductive than previously shown. Kim suspended graphene in a vacuum, where no other material could slow the movement of its subatomic particles, and showed that it had a “mobility”—the speed at which an electrical charge flows across a semiconductor—of up to two hundred and fifty times that of silicon.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell with Google Hangouts On-Air is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
