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Ultra-Thin 3D Display Promises Greater Energy Efficiency

An ultra-thin LCD screen, developed by a group of researchers from the Hong Kong University of Science and Technology, holds three-dimensional images without a power source, making the display technology a compact, energy-efficient way to display visual information.In a traditional LCD, liquid crystal molecules are sandwiched between polarized glass plates. Electrodes pass current through the apparatus, influencing the orientation of the liquid crystals inside and manipulating the way they interact with the polarized light. The new displays ditch the electrodes, simultaneously making the screen thinner and decreasing its energy requirements. Once an image is uploaded to the screen via a flash of light, no power is required to keep it there. Because these so-called bi-stable displays draw power only when the image is changed, they are particularly advantageous in applications where a screen displays a static image for most of the time, such as e-book readers or battery status monitors for electronic devices. “Because the proposed LCD does not have any driving electronics, the fabrication is extremely simple. The bi-stable feature provides a low power consumption display that can store an image for several years,” said researcher Abhishek Srivastava.The researchers, however, went further than creating a simple LCD display; they engineered their screen to display images in 3D. SourceAlso: Learn about a Rapid Prototyping Lab (RPL) Generic Display Engine.

Posted in: Electronics & Computers, Imaging, Displays/Monitors/HMIs, Energy Efficiency, Energy, News

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New Computer Codes Enable Design of Greener, Leaner Aircraft

A computer model that accurately predicts how composite materials behave when damaged will make it easier to design lighter, more fuel-efficient aircraft. Innovative computer codes form the basis of a computer model that shows in unprecedented detail how an aircraft's composite wing, for instance, would behave if it suffered small-scale damage, such as a bird strike. Any tiny cracks that spread through the composite material can be predicted using this model. 

Posted in: Electronics & Computers, Green Design & Manufacturing, Greenhouse Gases, Materials, Composites, Software, Aerospace, Aviation, News

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NASA Tool Helps Airlines Minimize Weather Delays

A NASA-developed tool, Dynamic Weather Routes (DWR), is designed to alleviate weather-induced air traffic interruptions. The computer software tool is programmed to constantly analyze air traffic throughout the National Airspace System, along with the ever-shifting movements of weather severe enough to require an airliner to make a course change.

Posted in: Electronics & Computers, Software, Communications, Aerospace, Aviation, News

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Biomimetic Photodetector “Sees” in Color

Rice University researchers have created a CMOS-compatible, biomimetic color photodetector that directly responds to red, green, and blue light in much the same way the human eye does. The new device uses an aluminum grating that can be added to silicon photodetectors with CMOS technology.

Posted in: Electronics & Computers, Photonics, Sensors, Detectors, News

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Researchers Develop Thinnest Electric Generator

Researchers from Columbia Engineering and the Georgia Institute of Technology made the first experimental observation of piezoelectricity and the piezotronic effect in an atomically thin material, molybdenum disulfide (MoS2), resulting in a unique electric generator and mechanosensation devices that are optically transparent, extremely light, and very bendable and stretchable.“This material—just a single layer of atoms—could be made as a wearable device, perhaps integrated into clothing, to convert energy from your body movement to electricity and power wearable sensors or medical devices, or perhaps supply enough energy to charge your cell phone in your pocket,” says James Hone, professor of mechanical engineering at Columbia and co-leader of the research.Hone’s team placed thin flakes of MoS2 on flexible plastic substrates and determined how their crystal lattices were oriented using optical techniques. They then patterned metal electrodes onto the flakes. In research done at Georgia Tech, a group led by Zhong Lin Wang, Regents’ Professor in Georgia Tech’s School of Materials Science and Engineering, installed measurement electrodes on the samples provided by Hone’s group, then measured current flows as the samples were mechanically deformed. They monitored the conversion of mechanical to electrical energy, and observed voltage and current outputs.Ultimately, Zhong Lin Wang notes, the research could lead to complete atomic-thick nanosystems that are self-powered by harvesting mechanical energy from the environment. This study also reveals the piezotronic effect in two-dimensional materials for the first time, which greatly expands the application of layered materials for human-machine interfacing, robotics, MEMS, and active flexible electronics.Source Also: Learn more about a Piezoelectric Energy Harvesting Transducer System.

Posted in: Electronics & Computers, Electronic Components, Electronics, Power Management, Materials, Metals, Sensors, Semiconductors & ICs, News

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No-Power Wi-Fi Connectivity Could Fuel Internet of Things

Imagine a world in which your wristwatch or other wearable device communicates directly with your online profiles, storing information about your daily activities where you can best access it, all without requiring batteries. Or, battery-free sensors embedded around your home that could track minute-by-minute temperature changes and send that information to your thermostat to help conserve energy.

Posted in: Electronics & Computers, Power Management, Sensors, Test & Measurement, Monitoring, Communications, Wireless, RF & Microwave Electronics, News, Products

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Ferroelectric Materials Could Revolutionize Data-Driven Devices

Electronic devices with unprecedented efficiency and data storage may someday run on ferroelectrics — remarkable materials that use built-in electric polarizations to read and write digital information, outperforming the magnets that are inside most popular data-driven technology. But ferroelectrics must first overcome a few key stumbling blocks, including a curious habit of "forgetting" stored data. Now, however, scientists at the U.S. Department of Energy's Brookhaven National Laboratory have discovered nanoscale asymmetries and charge preferences hidden within ferroelectrics that may explain their operational limits.

Posted in: Electronics & Computers, Electronic Components, Board-Level Electronics, Electronics, Power Management, Computers, Materials, Metals, Test & Measurement, Measuring Instruments, News

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