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# 'Solar Battery' Runs on Light and Air

Ohio State University researchers report that they have succeeded in combining a battery and a solar cell into one hybrid device.Key to the innovation is a mesh solar panel, which allows air to enter the battery, and a special process for transferring electrons between the solar panel and the battery electrode. Inside the device, light and oxygen enable different parts of the chemical reactions that charge the battery.The university will license the solar battery to industry, where Yiying Wu, professor of chemistry and biochemistry at Ohio State, says it will help tame the costs of renewable energy.“The state of the art is to use a solar panel to capture the light, and then use a cheap battery to store the energy,” Wu said. “We’ve integrated both functions into one device. Any time you can do that, you reduce cost.”During charging, light hits the mesh solar panel and creates electrons. Inside the battery, electrons are involved in the chemical decomposition of lithium peroxide into lithium ions and oxygen. The oxygen is released into the air, and the lithium ions are stored in the battery as lithium metal after capturing the electrons.When the battery discharges, it chemically consumes oxygen from the air to re-form the lithium peroxide. An iodide additive in the electrolyte acts as a “shuttle” that carries electrons, and transports them between the battery electrode and the mesh solar panel. The use of the additive represents a distinct approach on improving the battery performance and efficiency, the team said. The invention eliminates the loss of electricity that normally occurs when electrons have to travel between a solar cell and an external battery.SourceAlso: Learn about Full-Cell Evaluation for New Battery Chemistries.

Posted in: News, Batteries, Electronic Components, Electronics & Computers, Power Management, Energy, Energy Storage, Renewable Energy, Solar Power, Semiconductors & ICs

# Tiny Wireless Sensing Device Alerts Users to Telltale Vapors Remotely

A research team at the Georgia Tech Research Institute (GTRI) has developed a small electronic sensing device that can alert users wirelessly to the presence of chemical vapors in the atmosphere. The technology, which could be manufactured using familiar aerosol-jet printing techniques, is aimed at a variety of applications in military, commercial, environmental, healthcare and other areas.

Posted in: News, Communications, Wireless, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Nanotechnology, RF & Microwave Electronics, Semiconductors & ICs, Detectors, Sensors

# 3D Printer That Could Build a Home in 24 Hours Wins Global Design Competition

New York, NY – Contour Crafting, a computerized construction method that rapidly 3D prints large-scale structures directly from architectural CAD models, has been awarded the grand prize of $20,000 in the 2014 "Create the Future" Design Contest. Contour Crafting automates the construction of whole structures and radically reduces the time and cost of construction. The large-scale 3D printing technology is revolutionary to the construction industry and could lead to affordable building of high-quality, low-income housing; the rapid construction of emergency shelters; and on-demand housing in response to disasters. NASA is looking at the technology for building moon and Mars bases. Behrokh Khoshnevis, a professor at University of Southern California, who invented Contour Crafting, views this invention as a proven concept. “Bringing 3D printing to construction is bringing a concept to a proven application. For many years, building has been done in layers – concrete foundation blocks, brick laying, structural framing, etc.” “I am very happy to receive this award and find it to be very timely as I am in the process of fund raising and I think this recognition will help me greatly in furthering the project,” said Khoshnevis. Contour Crafting was among the 1,074 new product ideas submitted in the 12th annual design contest, which was established in 2002 to recognize and reward engineering innovations that benefit humanity, the environment, and the economy. This year’s design contest was co-sponsored by COMSOL (www.comsol.com) and Mouser Electronics (www.mouser.com). Analog Devices and Intel were supporting sponsors. In addition to the grand prize of$20,000, first-place winners (of Hewlett-Packard workstations) were named in seven categories: *Aerospace & Defense: The Polariton Interferometer - a Novel Inertial Navigation System Frederick Moxley A stealth navigation system that provides precise course-plotting while operating independently from GPS. *Automotive/Transportation: Continuously Variable Displacement Engine Steve Arnold A continuously variable stroke engine that operates at 30% better fuel efficiency than conventional thick stroke engine designs. *Consumer Products: NanoFab Lab...in a Box! Jonathan Moritz (Team Leader) An educational kit that brings nanomanufacturing out of the cleanroom and into the classroom. *Electronics: A Paradigm Shift for SMT Electronics Jim Hester (Team Leader) Micro-coil springs that provide flexible electrical interconnections for integrated circuit packages, preventing connection breaks due to heat and vibration. *Machinery/Automation/Robotics  – sponsored by Maplesoft: Automatic Eye Finder & Tracking System Rikki Razdan (Team Leader) Real-time point-of-gaze eye tracking system that allows users to control computer input through "Look and Click" applications.  *Medical: HemeChip for Early Diagnosis of Sickle Cell Disease Yunus Alapan (Team Leader) A biochip that can rapidly, easily, and conclusively identify the hemoglobin type in blood to diagnose Sickle Cell Disease in newborns. *Sustainable Technologies: Ecovent Systems - Making Every Room the Right Temperature Dipul Patel (Team Leader) A system of wireless vents and sensors that makes any forced air heating and cooling system smarter by directing conditioned air where it’s needed most. Finalists were selected by senior editors at Tech Briefs Media Group and judged by an independent panel of design engineers. Visitors to the contest Web site could vote on entries, with the 10 most popular designs awarded a Sphero mobile game system by Orbotix. For more information, visit www.createthefuturecontest.com.

Posted in: News, Automotive, Electronic Components, Electronics & Computers, Green Design & Manufacturing, Manufacturing & Prototyping, Rapid Prototyping & Tooling, Diagnostics, Medical, Nanotechnology, Automation, Semiconductors & ICs, Computer-Aided Design (CAD), Software

# New Circuits Can Function at Temperatures Above 650°F

Engineering researchers at the University of Arkansas have designed integrated circuits that can survive at temperatures greater than 350 degrees Celsius — or roughly 660 degrees Fahrenheit. Their work, funded by the National Science Foundation, will improve the functioning of processors, drivers, controllers and other analog and digital circuits used in power electronics, automobiles and aerospace equipment, all of which must perform at high and often extreme temperatures.

Posted in: News, Aerospace, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Power Management, Semiconductors & ICs, Automotive, Transportation

# Engineers Hope to Create Electronics That Stretch at the Molecular Level

Nanoengineers at the University of California, San Diego are asking what might be possible if semiconductor materials were flexible and stretchable without sacrificing electronic function?

Posted in: News, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Materials, Semiconductors & ICs, Sensors

# Agile Aperture Antenna Tested on Aircraft to Maintain Satellite Connection

Two of Georgia Tech's software-defined, electronically reconfigurable Agile Aperture Antennas (A3) were demonstrated in an aircraft during flight tests. The low-power devices can change beam directions in a thousandth of a second. One device, looking up, maintained a satellite data connection as the aircraft changed headings, banked and rolled, while the other antenna looked down to track electromagnetic emitters on the ground.

Posted in: News, Aerospace, Aviation, Communications, Wireless, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Power Management, Antennas, RF & Microwave Electronics, Software, Measuring Instruments, Test & Measurement

# 'Sensing Skin' Detects Damage in Concrete Structures

Researchers from North Carolina State University and the University of Eastern Finland have developed new “sensing skin” technology designed to serve as an early warning system for concrete structures, allowing authorities to respond quickly to damage in everything from nuclear facilities to bridges.“The sensing skin could be used for a wide range of structures, but the impetus for the work was to help ensure the integrity of critical infrastructure such as nuclear waste storage facilities,” says Dr. Mohammad Pour-Ghaz, an assistant professor of civil, construction and environmental engineering at NC State and co-author of a paper describing the work.The skin is an electrically conductive coat of paint that can be applied to new or existing structures. The paint can incorporate any number of conductive materials, such as copper, making it relatively inexpensive.Electrodes are applied around the perimeter of a structure. The sensing skin is then painted onto the structure, over the electrodes. A computer program then runs a small current between two of the electrodes at a time, cycling through a number of possible electrode combinations.Every time the current runs between two electrodes, a computer monitors and records the electrical potential at all of the electrodes on the structure. This data is then used to calculate the sensing skin’s spatially distributed electrical conductivity. If the skin’s conductivity decreases, that means the structure has cracked or been otherwise damaged.The researchers have developed a suite of algorithms that allow them to both register damage and to determine where the damage has taken place.SourceAlso: Learn about Designing Composite Repairs and Retrofits for Infrastructure.

Posted in: News, Communications, Electronic Components, Electronics, Electronics & Computers, Materials, Semiconductors & ICs, Detectors, Sensors, Test & Measurement