At this week’s International Image Sensor Workshop in Utah, Belgium’s imec and Holst Centre, in collaboration with Philips Research, will present a large-area fully-organic photodetector array fabricated on a flexible substrate. The imager is sensitive in the wavelength range suitable for x-ray imaging applications.
Researchers in Germany have developed a method that can reduce engine friction and wear even during production of engine components. The new surface finishing methods that the team from five different Fraunhofer Institute locations produce a nanocrystalline layer which offers much improved tribological properties of the metal. The advance, they say, can help to reduce fuel consumption and carbon dioxide emissions.
A rabbit sculpture, the size of a typical bacterium, is one of several whimsical shapes created by a team of Japanese scientists using a new material that can be molded into complex, highly conductive 3D structures with features just a few micrometers across. The new resin holds promise for making customized electrodes for fuel cells or batteries, as well as biosensor interfaces for medical uses.
A University of British Columbia engineer and a team of U.S. researchers have made a breakthrough utilizing spray-on technology that could revolutionize the way optical lenses are made and used. Nearly all lenses—whether in an eye, a camera, or a microscope—are presently curved, which limits the aperture, or amount of light that enters. The new spray-on lens is flat, and can be affixed to a glass slide.
Northwestern University researchers have recently developed a graphene-based ink that is highly conductive and tolerant to bending, and they have used it to inkjet-print graphene patterns that could be used for extremely detailed, conductive electrodes. The resulting patterns are 250 times more conductive than previous attempts to print graphene-based electronic patterns and could be a step toward low-cost, foldable electronics.
Scientists at Brookhaven National Laboratory have discovered that DNA "linker" strands coax nano-sized rods to line up in way unlike any other spontaneous arrangement of rod-shaped objects. The arrangement—with the rods forming "rungs" on ladder-like ribbons linked by multiple DNA strands—results from the collective interactions of the flexible DNA tethers and may be unique to the nanoscale.
Researchers in Europe have developed a new experimental system to gain accurate information on mechanical values and properties of any microelectromechanical (MEMS) device through electrical measurement. The technique works by applying a current across the device with a varying frequency and analyzes the harmonic content of the output voltage of the component parts.
Researchers at the U.S. Naval Research Laboratory (NRL) recently flew their fuel cell powered Ion Tiger UAV for 48 hours and 1 minute on April 16-18 by using liquid hydrogen fuel in a new, NRL-developed, cryogenic fuel storage tank and delivery system. This flight shatters their previous record of 26 hours and 2 minutes set in 2009 using the same vehicle, but with gaseous hydrogen stored at 5000 psi.
Swedish and Spanish engineers have created a system of sensors that detects fruit odors more effectively than the human sense of smell. For now, the device, which has 32 sensors and can process scent data in real time, can distinguish between the odorous compounds emitted by pears and apples, but the system can be tailored to other applications.
Paper, a light and foldable raw material, could be a cost-efficient and simple basis for electronic devices if a practical solution for depositing conductive structures could be found. Researchers in Germany say they have done this by creating targeted structures by printing and heating a catalyst on a sheet of paper. The solution was created with a conventional inkjet printer.
As markets for miniature, hybrid machines known as MEMS grow and diversify, NIST has introduced a long-awaited measurement tool that will help growing numbers of device designers, manufacturers and customers to see eye to eye on eight dimensional and material property measurements that are key to device performance.
Asbestos was banned in the many industrialized countries in the 1980s, but the threat lingers on in the ceilings, walls and floors of old buildings and homes. Now a team of researchers in the U.K. has developed and tested the first portable, real-time airborne asbestos detector. The device uses a laser-based light scattering technique to identify harmful fibers.
In a major step for Virgin Galactic’s bid to create the first space tourism company, the SpaceShipTwo made its first powered flight Monday, breaking the sound barrier in a test over the Mojave Desert. It then glided to a safe landing. The successful flight moves the company closer to its goal of flying paying passengers on brief hops into space.
Kevin Keener, a professor of food science at Purdue University, looks for new ways to kill harmful bacteria, and has determined that exposing packaged liquids, fruits, and vegetables to an electrical field for just minutes could remove all traces of foodborne pathogens. His method uses electricity to generate a plasma, or ionized gas, from atmospheric gases inside the food package.
To increase the neutron detection efficiency of bulk-micromegas (MICRO-MEsh GAseous Structure) neutron detectors, researchers from China and the University of Tennessee-Knoxville have proposed three new types of thin-film converters: micro-channel, parallel micro-pillar, and oblique micro-pillar 2D array. When validated using Monte Carlo simulations, the latter design showed a threefold increase in neutron detection efficiencies.
Solar Impulse, considered the world's most advanced solar-powered plane, is set to travel across the United States, stopping for seven to 10 days at major airports in each city, so the pilots can display and discuss the aircraft with reporters, students, engineers and aviation fans. It plans to reach New York's Kennedy Airport in early July—without using a drop of fuel, its creators said.
Driving a car at low engine speed causes torsional vibrations that passengers perceive as a hum. A new type of centrifugal pendulum has been developed in Germany that helps reduce these vibrations. This device might be useful as automakers increasingly use engines with fewer cylinders which are prone to this phenomenon.
A team of researchers at Stanford has designed an entirely new form of cooling structure that cools even when the sun is shining. The new structure accomplishes two goals. It is an effective a broadband mirror for solar light—it reflects most of the sunlight. It also emits thermal radiation very efficiently within the crucial wavelength range needed to escape Earth's atmosphere.
Have you ever had a fighter jet fly over your home and the noise of the aircraft booms loud enough to rattle the windows? Imagine working on an aircraft carrier or air base, up close to the engines as they take off or land. Several U.S.-based research teams, with the support of the Office of Naval Research, have been tasked with finding a way to reduce that deafening noise as part of a three-year project.
The future is unclear for a promising heart device aimed at preventing strokes in people at high risk of them because of an irregular heartbeat. Early results from a key study of Boston Scientific Corp.'s Watchman device suggested it is safer than previous testing found, but may not be better than a drug that is used now for preventing strokes, heart-related deaths and blood clots in people with atrial fibrillation over the long term.
Scientists in Maryland have built a new practical, high-efficiency nanostructured electron source. Unlike thermionic electron sources, which use an electric current to boil electrons off the surface of a wire, the new emitter uses highly porous silicon carbide to avoid the energy efficiency problems of traditional emitters. This type of field emitter has a fast response and could lead to improved X-ray imaging systems.
Researchers at the NIST have demonstrated a solid-state refrigerator that uses quantum physics in micro- and nanostructures to cool a much larger object to extremely low temperatures. What's more, the prototype NIST refrigerator, which measures a few inches in outer dimensions, enables researchers to place any suitable object in the cooling zone and later remove and replace it, similar to an all-purpose kitchen refrigerator.
A research team in Austria has developed an entirely new way of capturing images based on a flat, flexible, transparent, and potentially disposable polymer sheet. The new imager, which resembles a flexible plastic film, uses fluorescent particles to capture incoming light and channel a portion of it to an array of sensors framing the sheet. With no electronics or internal components, the imager’s elegant design makes it ideal for a new breed of imaging technologies.
Electric rocket engines known as Hall thrusters, which use a super high-velocity stream of ions to propel a spacecraft in space, have been used successfully onboard many missions for half a century. Erosion of the discharge channels walls, however, has limited their application to the inner solar system. A research team at Caltech's Jet Propulsion Laboratory has found a way to effectively control this erosion by shaping the engine's magnetic field in a way that shields the walls from ion bombardment.
The size of electronic components is reaching a physical limit. While 3D assembly can reduce bulk, the challenge is in manufacturing these complex electrical connections. Biologists and physicists in France have recently developed a system of self-assembled connections using actin filaments for 3D microelectronic structures. Once the actin filaments become conductors, they join the various components of a system together.