A nanomaterials ontology to support data publication using Nanomine.
a shortened form of a word or phrase. It consists of a group of letters taken from the word or phrase.
A measure of the durability of an insulating or dielectric material against the formation of conductive paths along thesurface by arc discharges.
is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side – the ratio of width to height, when the rectangle is oriented as a "landscape".
In atactic macromolecules the substituents are placed randomly along the chain. The percentage of meso diads is between 1 and 99%. With the aid of spectroscopic techniques such as NMR it is possible to pinpoint the composition of a polymer in terms of the percentages for each triad.
Nanoscale probing of material surface characteristics
Brittleness temperature is the temperature at which 50% of the tested specimens exhibit brittle failure at specified impact conditions
a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
Energy absorbed by the sample during Charpy impact testing
The ratio of compressive stress to compressive strain
Material strength at rupture during a compressive creep test
Time taken to rupture from applying load during a compressive creep test
Profile of strain as a function of time during a compressive creep test
Stress vs. strain curve of during compressive loading and/or unloading test
polymers containing a mixture of repeat units
A single material may have several distinct solid states capable of forming separate phases. Water is a well-known example of such a material. For example, water ice is ordinarily found in the hexagonal form ice Ih, but can also exist as the cubic ice Ic, the rhombohedral ice II, and many other forms. Polymorphism is the ability of a solid to exist in more than one crystal form. For pure chemical elements, polymorphism is known as allotropy. For example, diamond, graphite, and fullerenes are different allotropes of carbon.
It is the temperature at which a solid phase begins to form, resulting in a mixture of solid particles and solution
the amount of electric current flowing per unit cross-sectional area of a material.
Also called dielectric permittivity. Ratio of the permittivity of a substance to the permittivity of free space, in particular contribution from direct current component that is invariant to applied frequency
Heat flow vs temperature out of a differential scanning calorimetry experiment
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
degree of consistency measured by the quantity of mass per unit volume
Maximum voltage required to produce a dielectric breakdown through the material and is expressed as Volts per unit thickness.
Dielectric and Impedance Spectroscopy Analysis
Measurement of dielectric spectroscopy (variation of dielectric constant with frequency)
Measurement of heat required to increase unit temperature in a material
Method to get viscoelastic behavior of materials with controlled temperature and frequency
a polymer with viscoelasticity (having both viscosity and elasticity) and very weak inter-molecular forces, generally having low Young's modulus and high failure strain compared with other materials.
ability of electric current to flow through a material
minimum filler content in the polymer matrix after which there is no significant change in the electrical properties of the composites.
Tensile elongation corresponding to the yield (an increase in strain does not result in an increase in stress).
amount of energy stored in a given system or region of space per unit volume or mass
Energy associated with cracking at the process zone
In eutactic macromolecules, substituents may occupy any specific (but potentially complex) sequence of positions along the chain. Isotactic and syndiotactic polymers are instances of the more general class of eutactic polymers, which also includes heterogeneous macromolecules in which the sequence consists of substituents of different kinds (for example, the side-chains in proteins and the bases in nucleic acids).
Elongation along grain direction in fibers
Tensile modulus along grain direction in fibers
Tensile Stress along grain direction in fibers
Material strength at rupture during a flexural creep test
Time taken to rupture from applying load during a flexural creep test
Profile of strain as a function of time during a flexural creep test
Stress vs. strain curve of during flexural loading and/or unloading test
Ratio of stress to strain in flexural deformation, or the tendency for a material to bend
Flexural stress at the moment at which a test specimen tears
Flexural stress corresponding to the yield point
Measurement of infrared spectrum of absorption or emission of a solid, liquid or gas
is the temperature region where the polymer transitions from a hard, glassy material to a soft, rubbery material.
Growth Rate Parameter Of Avrami Equation
Growth Rate Parameter in Avrami Equation
A chemical additive that increases the viscosity of a polymer.
The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.
change in enthalpy with energy dissipation
polymers that contain only a single type of repeat unit
Energy absorbed by the sample during Izod impact testing, as calculated by the height of swing arm
Interfacial tension is the force that holds the surfaceof a particular phase together
Thickness of matrix-particle interaction area with a gradient property as a function of distance from particle surface
Isotactic polymers are composed of isotactic macromolecules (IUPAC definition). In isotactic macromolecules all the substituents are located on the same side of the macromolecular backbone. An isotactic macromolecule consists of 100% meso diads. Polypropylene formed by Ziegler-Natta catalysis is an isotactic polymer. Isotactic polymers are usually semicrystalline and often form a helix configuration.
temperature of transition to liquid crystal phase
Infinitesimal material deformation or deformation within the linear regime
It is the fractional change in length per degree of temperature change
An organization that enages in the value added production of merchandise for use or sale using labour and machines, tools, chemical and biological processing, or formulation.
the temperature at which a solid turns into a liquid
Molecular analysis due to observed NMR under applied magnetic field
particles between 1 and 100 nanometers in size. In nanotechnology, a particle is defined as a small object that behaves as a whole unit with respect to its transport and properties.
Material deformation that undergoes both elastic and plastic deformation
Negative ratio of traverse to axial strain
a member of a class of materials analogous to metal alloys, in which at least two polymers are blended together to create a new material with different physical properties.
Polymer nanocomposites (PNC) consist of a polymer or copolymer having nanoparticles or nanofillers dispersed in the polymer matrix. These may be of different shape (e.g., platelets, fibers, spheroids), but at least one dimension must be in the range of 1–50 nm.
An article published in the proceedings of a conference.
Measurement of space charge in dielectric materials
Molecular analysis with spectroscopic techniques that observe low-frequency modes in a material
Scanning electron microscopy for obtaining microstructure at microscale
Stress vs. strain curve of during shear loading and/or unloading test
Cp for a gas is the change in the enthalpy (H) of the system with respect to change in temperature at a fixed pressure of the system
Cv for a gas is the change in internal energy (U) of a system with respect to change in temperature at a fixed volume of the system
The chemical composition ,composition variation ,crystal structure & photo-electric properties of the materials.
Engineering strain is defined as the amount of deformation in the direction of the applied force divided by the initial length of the material.
When a material is loaded with a force, it produces a stress, which then causes a material to deform.
Ability to resist leakage current along the surface of an insulating material
the force that causes the molecules on the surface of a liquid to be pushed together and form a layer
In syndiotactic or syntactic macromolecules the substituents have alternate positions along the chain. The macromolecule consists 100% of racemo diads. Syndiotactic polystyrene, made by metallocene catalysis polymerization, is crystalline with a melting point of 161 °C. Gutta percha is also an example for Syndiotactic polymer.
Ability of material to recover to original state after creep
Material strength at rupture during a tensile creep test
Time taken to rupture from applying load during a tensile creep test
Profile of strain as a function of time during a tensile creep test
Stress vs. strain curve of during tensile loading and/or unloading test
Young's modulus, or elastic modulus, describes tensile elasticity, or the tendency of an object to deform along an axis when opposing forces are applied along that axis; it is defined as the ratio of tensile stress to tensile strain.
Tensile stress at the moment at which a test specimen tears
Tensile stress corresponding to the yield point (an increase in strain does not result in an increase in stress).
a measure of the ability of a substance to conduct heat, determined by the rate of heat flownormally through an area in the substance divided by the area and by minus the component of the temperaturegradient in the direction of flow
Thermal decomposition temperature of a substance is the temperature at which the substance chemically decomposes by heat
thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. It measures the rate of transfer of heat of a material from the hot side to the cold side
Thermal analysis of material properties as function of temperature and time
a plastic material, a polymer, that becomes pliable or moldable above a specific temperature and solidifies upon cooling.
a cured thermosetting resin. A thermosetting resin is a prepolymer in a soft solid or viscous liquid state that changes irreversibly into an infusible, insoluble polymer network by curing.
The common, non-chemical name for a chemical substance.
Transmission electron microscopy for obtaining microstructure at nanoscale
a measure of its resistance to gradual deformation by shear stress or tensile stress.
volumetric coefficient of thermal expansion
The volume of a constituent divided by the volume of all constituents of the mixture prior to mixing.
Ability to oppose the flow of electric current.
The amount of weight gain (%) experienced in a polymer after immersion in water for a specific length of time under controlled environment.
Non-destructive X-ray measurement for crystal structure, chemical composition, and physical properties
The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions.
A chemical substance that is blended in to a polymer to acheive a desired effect.
a multiphase solid material where one of the phases has one, two or three dimensions of less than 100 nanometers (nm), or structures having nano-scale repeat distances between the different phases that make up the material. In the broadest sense this definition can include porous media, colloids, gels and copolymers, but is more usually taken to mean the solid combination of a bulk matrix and nano-dimensional phase(s) differing in properties due to dissimilarities in structure and chemistry.
materials of which a single unit is sized (in at least one dimension) between 1 and 1000 nanometres (10−9 meter) but is usually 1—100 nm
creep is the tendency of material to move slowly or deform permanently under the influence of mechanical stresses
Amount of energy absorbed by a material during fracture in a high strain-rate test or Charpy impact test
a material consisting of any of a wide range of synthetic or semi-synthetic organic compounds that are malleable and can be molded into solid objects. Plastics are typically organic polymers of high molecular mass, but they often contain other substances.
Properties of how the material will react to forces being applied in bending
Ability of material containing a crack to resist fracture
Properties of how the material will react to forces being applied in shear
the relative stereochemistry of adjacent chiral centers within a macromolecule.
Properties of how the material will react to forces being applied in compression
Properties of materials that exhibit both viscous and elastic behaviors
Properties of how the material will react to forces being applied in tension.