Keyword: Graphite

Briefs: Electronics & Computers
New cell chemistry utilizes less costly and more abundant materials than lithium-ion batteries.
Briefs: Aerospace
The new battery technology could improve electric vertical takeoff and landing aircraft and supercharge safe, long-range electric cars.
Briefs: Sensors/Data Acquisition
People could monitor their own health conditions by picking up a pencil and drawing a bioelectronic device on their skin.
Briefs: Materials
These carbon-based fillers can be used in thermally conductive clothing such as liquid-cooled garments.
Briefs: Energy

Lithium-metal batteries — which can hold up to ten times more charge than lithium-ion batteries — haven't been commercialized because of a fatal flaw: as the batteries charge and...

Briefs: Materials

Laser-induced graphene (LIG) has been used to write graphene patterns onto food and other materials to quickly embed conductive identification tags and sensors into the products...

Briefs: Semiconductors & ICs
Ultra-Strong, Lightweight, Elastic, Electrically Conductive Carbon

The configuration of carbon's electrons allows for numerous self-bonding combinations that give rise to a range of materials with varying properties. For example, transparent, super-hard diamonds and opaque graphite, which is used for both pencils and industrial lubricant, are...

Briefs: Materials

Researchers at NASA have developed new methods to manufacture carbon materials (e.g., nanotubes, graphene) with holes through the graphitic surface of the particles. The...

Briefs: Manufacturing & Prototyping

Graphene is a relative to graphite, which consists of millions of layers of graphene, and can be found in common pencil tips. Since graphene was isolated in 2004, researchers have learned to...

Briefs: Manufacturing & Prototyping

Engineers have developed a simple method for producing high-quality graphene that can be used in next-generation electronic and energy devices. The method essentially bakes the compound in a...

Articles: Materials

This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that...

Briefs: Materials

NASA's Langley Research Center has developed a method for producing multifunctional, structural, thermally stable...

Briefs: Materials

NASA’s Langley Research Center has developed a new technique to enable the preparation of metal/composite hybrid laminates, also known as fiber metal laminates (FML),...

Briefs: Electronics & Computers

The Integrated Solar Array and Reflectarray (ISARA) antenna requires a rugged circuit board material that will meet the following requirements: (1) remains sufficiently...

Articles: Aerospace

Thermally conductive adhesives are uniquely qualified to meet the increasingly diverse requirements of advanced electronics systems. From their...

INSIDER: Electronics & Computers

As scientists continue to hunt for a material that will make it possible to pack more transistors on a chip, new research from McGill University and Université de Montréal adds to evidence that...

Briefs: Materials
Advanced Protective Coatings for Graphite Substrates

The purpose of this innovation is to develop advanced multilayered coating architectures to protect graphite substrates from hot hydrogen attack. The concept consists of coating the graphite substrate with metallic and non-metallic layers consisting of ZrC; Nb, Mo, and/or Nb-Mo alloy; and/or...

Briefs: Mechanical & Fluid Systems

A component-level DC transformer was developed in which no alternating currents or voltages are present. It operates by combining features of a homopolar motor and a homopolar generator, both DC devices, such that the output...

Briefs: Materials
Innovative, Low-CTE, Lightweight Structures with Higher Strength

A series of lightweight (density below 2.0 gm/cm3) composites has been manufactured that have controllable properties. The core composite has been improved to provide higher strength (similar to aluminum), extremely low density, receptivity to exterior coatings, and...

Briefs: Manufacturing & Prototyping
Advanced Composite Thrust Chambers for In-Space Propulsion

Radiation-cooled, bipropellant thrust chambers are being used for in-space propulsion. To increase the performance of radiation-cooled engines, improved chamber materials are needed that will allow higher operating conditions (pressure and temperature), better resistance to oxidation,...

Briefs: Mechanical & Fluid Systems
Compact Regenerative Blower

The regenerative blower provides air flow through structures or systems that have relatively high flow resistance. Specifically, the regenerative blower was designed to provide a flow of ventilation gas through a spacesuit and its portable life support system (PLSS). Since the ventilation gas is primarily oxygen, fire...

Briefs: Manufacturing & Prototyping
Very-High-Load-Capacity Air Bearing Spindle for Large Diamond Turning Machines

Large-load-capacity oil hydrostatic bearings generate prohibitive amounts of heat in large sizes when run at speeds useful for diamond turning of optical components. The viscosity of air is more than three orders of magnitude less than the thinnest oil; therefore, the...

Research News: Lighting

Most modern electronics, from flat-screen TVs and smartphones to wearable technologies and computer monitors, use tiny light-emitting diodes, or LEDs. These LEDs...

Briefs: Materials
Mechanistic-Based Multiaxial- Stochastic-Strength Model for Transversely- Isotropic Brittle Materials

A methodology has been developed and the software written to predict the probability of failure of transversely isotropic (a type of anisotropy) materials under generalized thermomechanical loading. This methodology is mechanistic in that it is...

Briefs: Materials

Next-generation high-temperature thermoelectric-power-generating devices will employ segmented architectures and will have to reliably withstand thermally induced...

Briefs: Materials
Preparation of a Bimetal Using Mechanical Alloying for Environmental or Industrial Use

Following the 1976 Toxic Substances Control Act ban on their manufacture, PCBs remain an environmental threat. PCBs are known to bio-accumulate and concentrate in fatty tissues. Further complications arise from the potential for contamination of commercial...

Briefs: Manufacturing & Prototyping
Advanced Materials and Fabrication Techniques for the Orion Attitude Control Motor

Rhenium, with its high melting temperature, excellent elevated temperature properties, and lack of a ductile-to-brittle transition temperature (DBTT), is ideally suited for the hot gas components of the ACM (Attitude Control Motor), and other hightemperature...

Briefs: Materials
Soft-Bake Purification of SWCNTs Produced by Pulsed Laser Vaporization

The “soft-bake” method is a simple and reliable initial purification step first proposed by researchers at Rice University for single-walled carbon nanotubes (SWCNT) produced by high-pressure carbon mon - oxide disproportionation (HiPco). Softbaking consists of annealing...

Articles: Photonics/Optics

High-power fiber lasers have been increasingly used for material processing, metal cutting, and welding applications due to high wall-plug efficiency, compactness, and superb long term...