Robo-bats With Metal Muscles May Be Next Generation Of Remote Control Flyers

The skeleton of the robotic bat uses shape-memory metal alloy that is super-elastic for the joints, and smart materials that respond to electric current for the muscular system. (Credit: Gheorghe Bunget, North Carolina State University)

From Science Daily:

ScienceDaily (July 8, 2009) — Tiny flying machines can be used for everything from indoor surveillance to exploring collapsed buildings, but simply making smaller versions of planes and helicopters doesn't work very well. Instead, researchers at North Carolina State University are mimicking nature's small flyers – and developing robotic bats that offer increased maneuverability and performance.

Small flyers, or micro-aerial vehicles (MAVs), have garnered a great deal of interest due to their potential applications where maneuverability in tight spaces is necessary, says researcher Gheorghe Bunget. For example, Bunget says, "due to the availability of small sensors, MAVs can be used for detection missions of biological, chemical and nuclear agents." But, due to their size, devices using a traditional fixed-wing or rotary-wing design have low maneuverability and aerodynamic efficiency.

Read more ....

Physicists Find Way To Control Individual Bits In Quantum Computers

Optical lattices use lasers to separate rubidium atoms (red) for use as information "bits" in neutral-atom quantum processors -- prototype devices which designers are trying to develop into full-fledged quantum computers. NIST scientists have managed to isolate and control pairs of the rubidium atoms with polarized light, an advance that may bring quantum computing a step closer to reality. (Credit: NIST)

From Science Daily:

ScienceDaily (July 7, 2009) — Physicists at the National Institute of Standards and Technology (NIST) have overcome a hurdle in quantum computer development, having devised a viable way to manipulate a single "bit" in a quantum processor without disturbing the information stored in its neighbors. The approach, which makes novel use of polarized light to create "effective" magnetic fields, could bring the long-sought computers a step closer to reality.

A great challenge in creating a working quantum computer is maintaining control over the carriers of information, the "switches" in a quantum processor while isolating them from the environment. These quantum bits, or "qubits," have the uncanny ability to exist in both "on" and "off" positions simultaneously, giving quantum computers the power to solve problems conventional computers find intractable – such as breaking complex cryptographic codes.

Read more ....

Robot Invented To Crawl Through Veins

From PC Authority:

With a diameter of just one millimeter, a tiny robot has been unveiled that will crawl through the body to diagnose artery blockage

Scientists from Israel's Technion University have unveiled a tiny robot, made using Micro-Electro-Mechanical Systems (MEMS) technology, purportedly able to crawl through a person's veins in order to diagnose and potentially treat artery blockage and cancer.

The little robot - with a diameter of just one millimeter - has neither engine nor onboard controls, instead being propelled forward by a magnetic field wielded on it from outside the patient's body.

Read more ....

Robot Rescue 'Rat' Feels Its Way Through Rubble

From New Scientist:

A new robot with artificial whiskers could one day be used to locate survivors of natural disasters, or people trapped in burning buildings.

Developed by a team led by Tony Prescott from the University of Sheffield and Anthony Pipe from the University of Bristol, both in the UK, SCRATCHbot mimics the way a rat senses its environment.

Long plastic whiskers at the side of the robot's head move back and forth up to 5 times per second to detect nearby objects. If a whisker touches something, control software determines the location of the obstacle and orients the robot's head and body so that shorter bristles on its nose can make contact with it.

While many robots use touch sensors to supplement cameras, SCRATCHbot relies solely on its whiskers to feel its way around.

Read more ....

Emotional Robots: Will We Love Them Or Hate Them?

From New Scientist:

SUNDAY, 1 February 2009, and 100 million Americans have got only one thing on their minds - the Super Bowl. The Pittsburgh Steelers are poised to battle the Arizona Cardinals in the most popular televised sporting event in the US. In a hotel room in New York, 46 supporters gather to watch the game, munching burgers and downing beers. Nothing strange about that, of course, aside from the machines that are monitoring these sports fans' every move and every breath they take.

Read more ....

Darpa's First Robotic Ornithopter Hovers, Flies Like a Hummingbird

From Popular Science:

The creepy, tiny wing-flapping UAV, designed for indoor flight, is modelled on hummingbirds

A few years from now, bird-watchers may be in for a double take: that flapping creature in the distance? Nope, not a bird. Mutant dragon fly? Nope--it's Darpa's latest unmanned aerial robo-sentinel, inspired by the flight mechanics of birds.

Read more ....

Laser Light Switch Could Leave Transistors In The Shade

This experimental set-up was used to show that it is possible to make a transistor that acts using laser beams, not electric currents (Image: Martin Pototschnig)

From New Scientist:

An optical transistor that uses one laser beam to control another could form the heart of a future generation of ultrafast light-based computers, say Swiss researchers.

Conventional computers are based on transistors, which allow one electrode to control the current moving through the device and are combined to form logic gates and processors. The new component achieves the same thing, but for laser beams, not electric currents.

A green laser beam is used to control the power of an orange laser beam passing through the device.

Read more ....