molecular crystal वाक्य
उदाहरण वाक्य
मोबाइल
- The major experiments are focused on physical phenomena in the absence of gravity, including fluid flows, flame propagation, heat transfer and the formation of molecular crystals of metals.
- During this time he initiated, as applied to dams, theory of gravitational stresses in growing elastic bodies, and also developed a theory of exciton-phonon coupling in molecular crystals.
- Molecular crystals, liquid crystals, colloids, micelles, emulsions, phase-separated polymers, thin films and self-assembled monolayers all represent examples of the types of highly ordered structures which are obtained using these techniques.
- This experimental result also was of crutial scientific importance because it provided a firm scientific ground for identification strongly polarized absorption bands in the spectra of molecular crystals with exciton multipletes.
- Later, Tolpygo generalized his theory to describe homopolar crystals ( Si, Ge, diamond, etc . ), cryocrystals of noble gases, and molecular crystals by introducing long-range Coulomb interactions in their lattice dynamics.
- Participants are hoping studies of fluid flows, heat propagation and molecular crystal growth in the absence of gravity can be applied to a variety of manufacturing processes on Earth as well as in space.
- Another example is a molecular crystal : Each molecular unit has a preferred orientation due to interactions with the nearby molecules, but they have librational modes corresponding to small rotations about this preferred orientation.
- While normally carbon dioxide forms molecular crystals, where individual molecules are bound by Van der Waals forces, in amorphous carbonia a covalently bound three-dimensional network of atoms is formed, in a structure analogous to silicon dioxide or germanium dioxide glass.
- The other type of solids is weak molecular crystals ( e . g ., fluorocarbons, hydrocarbons, etc . ) where the molecules are held together essentially by physical forces ( e . g ., van der Waals and hydrogen bonds ).
- It is an important property of typical molecular crystals with two or more symmetrically-equivalent molecules in the elementary cell, such as benzine and naphthalene, that their exciton absorption spectra consist of doublets ( or multiplets ) of bands strongly polarized along the crystal axes as was demonstrated by Antonina Prikhot'ko.
- Following this work he helped to develop the theory of electronic excitations ( excitons ) in molecular crystals and liquids, eventually moving into the area of radiationless molecular transitions, beginning his own experimental work after the development of the Bixon-Jortner model, while also working with collaborators on extending the theoretical model of these transitions.
- In 1954 Rashba was accepted to the Semiconductor Department of the Institute of Physics of the A . F . Ioffe Institute in Leningrad in 1963 for his work on spin-orbit coupling in semiconductors and exciton spectroscopy of molecular crystals ( deducing energy spectra of excitons in pure crystals from optical spectra of mixed crystals, in collaboration with Vladimir Broude ).
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