"It is the thinnest known material in the universe, and the strongest ever measured," Andre Geim , a physicist at the University of Manchester, England , wrote in the June 19 issue of the journal Science.
"A few grams could cover a football field," said Rod Ruoff , a graphene researcher at the University of Texas, Austin , in an e-mail. A gram is about 1/30th of an ounce.
Like diamond, graphene is pure carbon. It forms a six-sided mesh of atoms that, through an electron microscope, looks like a honeycomb or piece of chicken wire. Despite its strength, it's as flexible as plastic wrap and can be bent, folded or rolled up like a scroll.
Team OMER, composed of students from the school's Ecole de Technologie Superieure in Montreal, drove two propellerless submarines to victory (winning $1,000 per race in the process) using thrust delivered from a pair of carbon fiber oars resembling the wings of the tuxedoed bird.
OMER 6, a one-person submarine, achieved a speed of 4.916 knots (5.65 miles per hour), beating the previous 4.642-knot (5.34-mile-per-hour) speed record for subs without a propeller. The two-person OMER 7 sub hit a top speed of 5.133 knots (5.90 miles per hour).
The shape of the warpship was chosen to optimize the manipulation of surrounding dark energy, creating a spacetime bubble. How exactly the bubble would be created is still a mystery. But once the bubble gets created, spacetime at the front of the warpship would be compressed, and behind, it would expand. Inside the bubble, spacetime remains unchanged; therefore the warpship floats in the center of stationary space while the bubble moves through spacetime.
The bubble itself, containing the warpship, "drives the spacecraft forwards at arbitrarily high speeds," said Obousy. This means the warpship can travel faster than the speed of light.
In some cases, patients might even want to hack into their own neural device. Unlike devices to control prosthetic limbs, which still use wires, many deep brain stimulators already rely on wireless signals. Hacking into these devices could enable patients to “self-prescribe” elevated moods or pain relief by increasing the activity of the brain’s reward centers.
Despite the risks, Kohno said, most new devices aren’t created with security in mind. Neural engineers carefully consider the safety and reliability of new equipment, and neuroethicists focus on whether a new device fits ethical guidelines. But until now, few groups have considered how neural devices might be hijacked to perform unintended actions. This is the first time an academic paper has addressed the topic of “neurosecurity,” a term the group coined to describe their field.
[YouTube Link - via Kinda Unique]
The device analyzes the facial characteristics of a person, including eye movements, lip curves and wrinkles, and rates a smile on a scale between 0 and 100 percent using a camera and computer.
For those with low scores, advice like "You still look too serious," or "Lift up your mouth corners," will be displayed on the screen.
Some 530 employees of the Tokyo-based railway company will check their smiles with Smile Scan before starting work each day. They will print out and carry around an image of their best smile in an attempt to remember it.
