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In materials science, an intrinsic property is independent of how much of a material is present and is independent of the form of the material, e.g., one large piece or a collection of small particles. Intrinsic properties are dependent mainly on the fundamental chemical composition and structure of the material. [1]
The intrinsic DNA fluorescence was discovered in the 1960s by studying nucleic acids in frozen media. [1] Since the beginning of the 21st century, the much weaker emission of nucleic acids in fluid solutions is being studied in room temperature by means sophisticated spectroscopic techniques using as UV source femtosecond laser pulses and ...
Extrinsic means that the chirality is a consequence of the arrangement of different components, rather than an intrinsic property of the components themself. For example, the propagation direction of a beam of light through an achiral crystal (or metamaterial) can form an experimental arrangement that is different from its mirror image.
Mechanism of intrinsic photogeneration of charge in amorphous photoconductors. The charge-carrier generation can be affected in different aspects: photons absorbed, polymer itself, photoexcitation of photosensitive material. The mechanism for intrinsic photogeneration is as illustrated. [7] As Onsager originally developed this theory: [8]
In physics, chirality may be found in the spin of a particle, where the handedness of the object is determined by the direction in which the particle spins. [4] Not to be confused with helicity , which is the projection of the spin along the linear momentum of a subatomic particle, chirality is an intrinsic quantum mechanical property, like spin.
For atomic line radiation, =, where is the Einstein coefficient for spontaneous emission, which is fixed by the intrinsic properties of the relevant atom for the two relevant energy levels. The absorption of atomic line radiation may be described by an absorption coefficient κ {\displaystyle \kappa } with units of 1/length.
Bulk density is not the same as the particle density, which is an intrinsic property of the solid and does not include the volume for voids between particles (see: density of non-compact materials). Bulk density is an extrinsic property of a material; it can change depending on how the material is handled. For example, a powder poured into a ...
Specific heat capacity is an intensive property of a substance, an intrinsic characteristic that does not depend on the size or shape of the amount in consideration. (The qualifier "specific" in front of an extensive property often indicates an intensive property derived from it. [12])