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The PCTPro-2000 - The Ultimate Tool for Gas Sorption Analysis
Gas sorption analysis is important in many fields of materials science and consumer product development. Some examples of current hot areas of technology involving gas-solid (or gasliquid) interactions include the development of energy storage materials, improved catalysts for petrochemical processing
Self-Propagating Reactions Induced by Mechanical Alloying
An article concerning self-propagating reactions induced by mechanical alloying, presented by Sigma-Aldrich.com.
Molybdenum Disulfide: Understanding Hydrogen Evolution Catalysis
The production of hydrogen by catalytic water splitting is important for a wide range of industries including renewable energy petroleum refining and for the production of methanol and ammonia in the chemical industry.
Energy Harvesting Using Lead Zirconium Titanate-Based Ceramic Nanowires
Among various ceramics, one-dimensional (1-D) piezoelectric ceramics have attracted significant scientific attention for use in energy harvesting.
Materials for Clean H2 Production from Bioethanol Reforming
Hydrogen is one of the most important resources in providing food, fuel, and chemical products for our everyday life. Sustainable catalytic hydrogen production from bioethanol has gained significant attention in recent years due to globally diminishing fossil fuel supplies, which
The Progress in Development of Dental Restorative Materials
With dentists placing nearly 100 million dental fillings into patients′ teeth annually in the U.S. alone, polymeric composite restoratives account for a very large share of the biomaterials market.
Innovative Materials for Glass Ionomer Cements (GICs): Dental Applications
Innovation in dental restorative materials is driven by the need for biocompatible and natural-appearing restoration alternatives. Conventional dental materials like amalgam and composite resins have inherent disadvantages.
Intermetallic Hydrides with High Dissociation Pressure
The rates of reaction for intermetallic compounds differ significantly from those for individual metals, and therefore, intermetallic hydrides are prospective materials for hydrogen storage and distribution.
Biomedical Implant Devices Fabricated from Low Young’s Modulus Titanium Alloys Demonstrating High Mechanical Biocompatibility
Biomedical implants are essentially foreign substances within the human body that must survive many years’ exposure to demanding mechanical and physiological conditions. Despite these challenges, metal implants have been widely used to substitute for or rebuild hard tissues such as
Magnetic Materials: Superconductors
Tutorial on superconductors as alternative energy sources.
Synthesis of Melting Gels Using Mono-Substituted and Di-Substituted Alkoxysiloxanes
Hybrid organic-inorganic sol-gel materials containing silica were first called “ORMOSILs” in 1984.
Silicides: Promising Thermoelectric Materials
Higher transition metal silicides are very well-suited for anisotropic thermoelectric conversion. Essential anisotropy of the Seebeck coefficient, together with good mechanical properties, allows production of reliable anisotropic thermoelectric converters.
Molecular Layer Deposition of Organic and Hybrid Organic-Inorganic Polymers
Atomic layer deposition (ALD) techniques have emerged in the last ten years to meet various needs including semiconductor device miniaturization, conformal deposition on porous structures and coating of nanoparticles. ALD is based on two sequential self-limiting surface reactions.
Mesoporous Oxides and Their Applications to Hydrogen Storage
Mesoporous materials, such as aerogels, offer advantages for practical hydrogen storage. They have large surface areas, open porosity, small pore sizes, and the ability to coat the surface with one or more compounds.
Molecular Monolayers on Silicon Surfaces
Molecular monolayers made via reactions of alkenes with H-Si(111) are often referred to as “self-assembled” monolayers on silicon surfaces by analogy with thiol monolayers on gold. These monolayers are chemically robust.
Nanostructured Materials Through Ultrasonic Spray Pyrolysis
Ultrasonic spray pyrolysis (USP) is effective for preparing a wide array of materials and is scalable and continuous. Nanomaterials prepared by USP include nanoporous metal oxides and sulfides, nanocomposites, semiconductor quantum dots, and conductive metal inks.
Solubility Rules for Ionic Compounds
Review solubility rules for common ionic compounds in water, including calcium carbonate, barium sulfate, and sodium sulfate, using the provided chart.
Sol-Gel Science for Ceramic Materials
Research involving reactive silicone chemistry has focused on the production of pure silicon and hybrid materials, hydrosilylation, ring-opening and atom transfer polymerizations, polymerizations with controlled stereochemistry, and condensation reactions.
Magnetic Properties of Materials
The three types of magnetic behaviors are paramagnetism where unpaired electrons are random, ferromagnetism where unpaired electrons align, and antiferromagnetism where unpaired electrons align opposite of one another.
Discovery and Single Crystal Growth of Lanthanide Intermetallics—Interplay of Synthesis and Physical Properties
Solid state and materials chemistry have made a tremendous impact and have experienced growth in recent years, particularly for rare earthcontaining materials.
Recent Progress in Spintronic Materials
Spin-based electronic (spintronic) devices offer significant improvement to the limits of conventional charge-based memory and logic devices which suffer from high power usage, leakage current, performance saturation, and device complexity.
Advanced Materials for Magnetic Cooling
Today, near-room-temperature refrigeration is almost entirely based on a vapor-compression refrigeration cycle.
Nanostructured Olivine-based Cathode Materials for Lithium-ion Batteries
Due to the adverse impact of the continued use of fossil fuels on the earth’s environment and climate, researchers have been asked to develop new approaches for producing power using renewable sources like wind and solar energy
Soft Magnetic Nanocrystalline Alloys: Materials and Models
Magnetic materials permeate numerous daily activities in our lives. They are essential components of a diversity of products including hard drives that reliably store information on our computers, decorative magnets that keep the shopping list attached to the refrigerator door
Combinatorial Materials Science for Energy Applications
Can there be an effective strategy for finding breakthrough materials, since they are, by definition, unpredictable? One answer is found in Combinatorial Materials Science techniques, which represent a powerful approach to identifying new and unexpected materials.
Using Activated Carbon as a Precious Metal Catalyst Carrier
Learn how activated carbon is working as a catalyst support and its advantage.
Metal Organic Frameworks (MOFs)
Metal-organic frameworks (MOFs) are porous, crystalline materials. MOFs are composed of metal ions or clusters bound by multidirectional organic ligands, which act as linkers in the network structure.
Complex Hydrides: A New Category of Solid-state Lithium Fast-ion Conductors
Research and development of solid-state lithium fast-ion conductors is crucial because they can be potentially used as solid electrolytes in all-solid-state batteries, which may solve the safety and energy-density related issues of conventional lithium-ion batteries that use liquid (farmable organic)
Chemistry in Flames: From Oxide to Salt and Metal Nanoparticles
Flame spray synthesis allows the scalable fabrication of many mixed oxide, salt, metal, carbon-coated metal, silica-coated metal oxide or even metal-ceramic composite nanoparticles.
From Form to Function: Molding Porous Materials in Three Dimensions by Colloidal Crystal Templating
From Form to Function: Molding Porous Materials in Three Dimensions by Colloidal Crystal Templating
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