what are the properties of nanomaterials?
537784
['Size, shape, specific surface area, aspect ratio.', 'Agglomeration/aggregation state.', 'Size distribution.', 'Surface morphology/topography.', 'Structure, including crystallinity and defect structure.', 'Solubility.']
15053
Physical Properties of Metals Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Other properties include: State: Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days).
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Nanotechnology offers the potential for new and faster kinds of computers, more efficient power sources and life-saving medical treatments. Potential disadvantages include economic disruption and possible threats to security, privacy, health and the environment.
1275232
['Fairly nonreactive.', 'Complete outer electron or valence shell (oxidation number = 0)', 'High ionization energies.', 'Very low electronegativities.', 'Low boiling points (all monatomic gases at room temperature)', 'No color, odor, or flavor under ordinary conditions (but may form colored liquids and solids)']
1304553
['Color.', 'Size.', 'Texture.', 'Shape.', 'Odor.', 'Hardness.', 'Physical state of matter (whether it is a liquid, solid, or gas)']
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The key difference is related to the size. In bulk material the physical properties are independent of its size but when yo go to nanometer scale it could be totally different and dependent on size and also shape.
464322
['Conductivity.', 'Corrosion Resistance.', 'Density.', 'Ductility / Malleability.', 'Elasticity / Stiffness.', 'Fracture Toughness.', 'Hardness.', 'Plasticity.']
313011
Typical properties of perovskites. Perovskite exhibited a variety of fascinating properties like ferroelectricity as in case of BaTiO3 and superconductivity as in case of Ba2YCu3O7. They exhibited good electrical conductivity close to metals, ionic conductivity and mixed ionic and electronic conductivity.
81103
The principal parameters of nanoparticles are their shape, size, surface characteristics and inner structure. Nanoparticles can be encountered as aerosols (solids or liquids in air), suspensions (solids in liquids) or as emulsions (liquids in liquids).
1057762
['Plasticity - sticky, the ability to form and retain the shape by an outside force, has a unique "crystal" structure of the molecules, plate like, flat, 2 dimensional, water affects it. ... ', 'Particle size - very tiny - less than 2 microns, 1 millionth of a meter. (']
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['It is a hard ferromagnetic, silver-white, lustrous, brittle element.', 'It is stable in air and does not react with water.', 'Like other metals, it can also be magnetized.', 'With dilute acids, it reacts slowly.', 'The metal melts at 1495 °C and boils at 2927 °C.']
632060
['may be solid, liquid or gas at room temperature.', 'has lower melting point than metals.', 'has lower boiling point than metals.', 'non-lustrous - dull, not shiny.', 'poor conductors of heat.', 'poor conductors of electricity.', 'brittle - break when stretched.', 'low tensile strength - easily broken.']
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What are the general physical properties of ceramic materials? Typical physical properties include electrical and thermal insulating, medium density (mostly below the density of metals), high melting temperatures, and thermal expansion usually less than metals.
449737
['High reactive metals.', 'Not found freely in nature.', 'Stored in a mineral oil solution.', 'Low melting points.', 'Low densities (lower than other metals)', 'Low electronegativity.', 'Low ionization energy.', 'React easily with halogens.']
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['(1). Catalytic Property.', '(2). Specificity.', '(3). Reversibility.', '(4). Sensitiveness to Heat and Temperature.', '(5). Specific to Hydrogen Ion Concentration (pH)']
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['Have high melting points.', 'Have high boiling points.', 'Tend to be soluble in water.', 'Conduct electricity in liquid form and in aqueous solution.', 'Are usually hard and brittle solids.', 'Have high enthalpies of fusion.', 'Have high enthalpies if vaporization.']
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Nanoparticles. Nanoparticles are structures, 1-100 nanometres (nm) in size, that usually contain only a few hundred atoms . This means that nanoparticles are around 100 times larger than atoms and simple molecules . 1 nm is 1 x 10 -9 m (or 0.000,000,001 m).