Phonon Confinement Effect in TiO2 Nanoparticles as Thermosensor Materials

TiO2 or ZnO nanoparticles (NPs) have a very strong finite-size dependency in their Raman spectra or photoluminescence (PL) spectra due to the phonon confinement effect or the quantum confinement effect. Together with a fast grain growth kinetics and a high stability under high temperature and pressure, they can forensically retain the complete thermal history of an event. By spatially distributing these NPs during thermal events such as blasts or weapon tests, a spatially and temporally non-uniform thermal environment can be determined by a direct read off their Raman or PL spectra at various locations.

Posted in: Briefs, Aerospace, Defense, Thermal Management, Materials, Nanotechnology, Photonics, Force Sensors and Resistors, Sensors, Test & Measurement

Nett Warrior

Nett Warrior is the US Army's next generation US integrated soldier system that replaces Land Warrior. It is designed to be an integrated dismounted situational awareness and mission command system for use during combat operations that enables fast and accurate decision-making during tactical operations.

Posted in: Articles, Aerospace, Communications, Defense, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Composites, Materials, Metals

Sharks on a Plane? Skin Scales Lift Aircraft Design

To improve a flying vehicle, sometimes you have to turn to a reliable model that has been operating for hundreds of millions of years.

Posted in: News, Blog, Aeronautics, Aerospace, Aviation, Defense, Imaging, Visualization Software, 3 D Printing & Additive Manufacturing, Materials, Computer-Aided Design (CAD), Computer-Aided Manufacturing (CAM), Mathematical/Scientific Software, Simulation Software, Software

Natural DNA-Based Nonvolatile Resistive Switching Memory

Motivated by the demand for an even larger storage capacity in the information era, research efforts have been devoted to the development of more efficient and cost-effective memory elements.

Posted in: Briefs, Aeronautics, Aerospace, Aviation, Data Acquisition, Manufacturing & Prototyping, Composites, Materials, Mechanical Components, Data Acquisition

Content Addressable Memory (CAM) Technologies for Big Data and Intelligent Electronics Enabled By Magneto-Electric Ternary CAM

Content addressable memory (CAM) is one of the most promising hardware solutions for high-speed data searching and has many practical applications such as anti-virus scanners, internet protocol (IP) filters, and network switches. Since CAM stores the data in its internal memory elements and compares them with the search data in parallel, it can achieve much faster speed compared to the software lookup.

Posted in: Briefs, Aerospace, Communications, Data Acquisition, Defense, Electronic Components, Electronics & Computers, Energy Efficiency, Internet of Things, Materials, Metals, Mechanical Components, MEMs, Semiconductors & ICs, Data Acquisition, Sensors

pH-Dependent Spin State Population and 19F NMR Chemical Shift Via Remote Ligand Protonation in An Iron(II) Complex

The development of transition metal-based molecules and materials that can be switched between low-spin and high-spin electronic states has constituted a highly active area of research over the past several decades. Indeed, the magnetic bistability of such spin-crossover compounds make them potential candidates for molecular switches and chemical sensors, as the spin transition can be controlled by a number of external stimuli, such as temperature, pressure, and light.

Posted in: Briefs, Aerospace, Defense, Electronic Components, Electronics, Electronics & Computers, Materials, Metals, Data Acquisition, Sensors, Measuring Instruments, Test & Measurement

A Mechanistic Analysis of Oxygen Vacancy Driven Conductive Filament Formation in Resistive Random Access Memory Metal/NiO/Metal Structures

Resistive Random Access Memory (RRAM) devices have drawn much interest in the last decade, particularly the concept of a memristor. In this case, the so-called memristance, which provides the relationship between the change in charge (time integral of the current) and flux (time integral of the voltage), is not a constant as in linear elements, but a function of the charge, resulting in a nonlinear circuit element. Applications of such two-terminal electrical devices that provide high densities and low-power operation include, for instance, neuromorphic-type computing elements.

Posted in: Briefs, Aeronautics, Aerospace, Aviation, Defense, Electronic Components, Electronics, Electronics & Computers, Manufacturing & Prototyping, Materials, Metals, Simulation Software, Software

Air Force Research Lab and Industry Advance Multi-Junction Solar Cells

Experts at the Air Force Research Laboratory (AFRL) continue to expand the scope of their technological expertise, rising above the Earth’s surface to meet the power needs of next-generation military spacecraft. A collaborative effort between the AFRL Materials and Manufacturing and Space Vehicles directorates, the Space Industrial Base Working Group, and SolAero Technologies has resulted in state-of-the art, multi-junction solar cells destined to reduce costs and increase power efficiency for military space applications.

Posted in: News, Defense, Solar Power, Materials, Photonics

Developing a Conformal Coating Process for Aerospace Applications

Conformal coatings protect electronic circuits from harsh environments via a chemical film that “conforms” to a circuit board’s topography. These coatings protect against moisture, chemicals, contamination, vibration, corrosion, and thermal stress while improving product reliability by reducing failures. The benefits conformal coating can provide often vary in importance by industry. In aerospace electronics there is an emphasis on benefits of protection from corrosive gasses, outgassing, tin whiskers, and radiation. For the purpose of this article, we will focus on liquid coating materials.

Posted in: Articles, Aerospace Manufacturing and Fabrication, Aerospace, Defense, Coatings & Adhesives, Materials

New Products & Services: December 2017 Aerospace Manufacturing & Fabrication

Metric-Sized Metal Shapes

Parker Steel Company (Maumee, OH) offers metric-sized metals suitable for applications where presized metric parts are needed. Parker Steel’s cold-finished carbon steel, alloyed and high-strength stainless steel, aluminum, copper, brass and tool steel bars/shafting, tubing, sheets and plates, angles, channels and tees; and other specialty shapes can be shipped out the same day as ordered with very few exceptions.

Posted in: Articles, Aerospace, Manufacturing & Prototyping, Coatings & Adhesives, Materials, Metals, Data Acquisition, Detectors, Sensors, Computer-Aided Design (CAD), Simulation Software, Software, Measuring Instruments, Monitoring, Test & Measurement, Product development, Fabrication, Steel