Wireless System Paves Way for 'Electroceutical' Medical Devices

A wireless system uses the same power as a cell phone to safely transmit energy to chips the size of a grain of rice. The technology paves the way for new "electroceutical" devices to treat illness or alleviate pain.The central discovery is an engineering breakthrough that creates a new type of wireless power transfer that can safely penetrate deep inside the body. The technology could spawn a new generation of programmable microimplants – sensors to monitor vital functions deep inside the body; electrostimulators to change neural signals in the brain; and drug delivery systems to apply medicines directly to affected areas.SourceAlso: Visit Medical Design Briefs.

Posted in: News, Wireless, Electronic Components, Power Management, Drug Delivery & Fluid Handling, Implants & Prosthetics, Patient Monitoring


GPS Tide Gauge Measures Sea Level Change

Using radio signals from satellite navigation systems, Scientists at Chalmers Department of Earth and Space Sciences have developed and tested a Global Navigation Satellite System (GNSS) tide gauge, an instrument that measures the sea level.The GNSS tide gauge uses radio signals from satellites in orbit around the Earth that are part of satellite navigation systems like GPS and Glonass (Russia’s equivalent of GPS).Two antennas, covered by small white radomes, measure signals both directly from the satellites and signals reflected off the sea surface. By analyzing these signals together, the sea level and its variation can be measured, up to 20 times per second.”We measure the sea level using the same radio signals that mobile phones and cars use in their satellite navigation systems,” says researcher Johan Löfgren. “As the satellites pass over the sky, the instrument ‘sees’ their signals – both those that come direct and those that are reflected off the sea surface.” SourceAlso: Learn about Global Positioning System (GPS) Meteorology.

Posted in: News, Environmental Monitoring, Antennas, Measuring Instruments


Robotic Modules Transform into Configurable Furniture

EPFL scientists from the Biorobotics Laboratory (BIOROB) have developed small robotic modules that can change their shape to create reconfigurable furniture. Like Lego bricks, Roombots pieces can be stacked upon each other to create various structures. Each 22 cm-long piece, which looks like two large dice joined together, has a wireless connection. Inside are a battery and three motors that allow the module to pivot with three degrees of freedom. The modules have retractable "claws" that they use to attach to other pieces and form larger structures. With a series of rotations and connections, the modules can change shape and become any of a variety of objects and pieces of furniture. In order to metamorphose and to attach to passive elements, the Roombots need to anchor themselves to something, so the researchers developed a special surface with holes adapted to the Roombots' mechanical claws. Fixed to the walls, floor, and already existing pieces of furniture, these surfaces act as interfaces between the modules and their environment. The little robots can then climb the walls of a room, or attach themselves to "passive" elements on the furniture to form mobile tables or lamps that follow users around the room. "It could be very useful for disabled individuals to be able to ask objects to come closer to them, or to move out of the way," says Auke Ijspeert, head of the BIOROB.SourceAlso: Learn about a Kinetic Calibration Process for Flight Robotic Arms.

Posted in: News, Machinery & Automation, Robotics


Creating Better Thermal-Imaging Lens From Waste Sulfur

Sulfur left over from refining fossil fuels can be transformed into cheap, lightweight plastic lenses for infrared devices, including night-vision goggles, a University of Arizona-led international team has found. The team successfully took thermal images of a person through a piece of the new plastic. By contrast, taking a picture taken through the plastic often used for ordinary lenses does not show a person’s body heat.

Posted in: News, Plastics, Optical Components, Optics, Photonics


Pedestrian Detection System Captures Body Heat

Researchers at Universidad Carlos III de Madrid (UC3M) have designed a new pedestrian detection system for cars that works in low-visibility conditions using infrared cameras to capture body heat. The new driving-aid system uses images captured by far infrared with two thermal cameras to identify the presence of individuals in their field of vision. The objective is to alert the driver to the presence of pedestrians in the path of the vehicle, and in the case of cars with automated systems, actually stop the vehicle.

Posted in: News, Cameras, Detectors, Sensors, Automotive


Unmanned Aircraft Tested as Tool for Measuring Polar Ice Sheets

Scientists studying the behavior of the world's ice sheets — and the future implications of ice sheet behavior for global sealevel rise — may soon have a new airborne tool that will allow radar measurements that previously would have been prohibitively expensive or difficult to carry out with manned aircraft.

Posted in: News, Aviation, Environmental Monitoring, Measuring Instruments, Monitoring


3D-Printing Aerial Robot Mimics Tiny Bird

Scientists from Imperial College London have developed a 3D-printing Micro Aerial Vehicle (MAV) that mimics the way that swiftlets build their nests.The MAV is a quad-copter, with four blades that enable it to fly and hover. The vehicle, made from off-the-shelf components, carries in its underbelly two chemicals that create polyurethane foam when mixed, and a printing module to deliver the foam. The foam can then be used to build simple structures or repair components.The texture of the polymer exuded from the 3D printer can also be used to create ’grippers,‘ which stick onto and transport objects to different locations. The MAV could therefore pick up and remove bombs, or dispose of hazardous materials without exposing humans to danger. The next step for the team is to enable the vehicle to fly autonomously in any environment. The scientists plan to incorporate high-speed cameras and sensors on board the MAV, which will act like a satellite navigation system for tracking and controlling of the flight trajectory.SourceAlso: Learn more about NASA's Robonaut 2.

Posted in: News, Aviation, Rapid Prototyping & Tooling, Plastics, Machinery & Automation, Robotics, Sensors