atomic structure


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atomic structure

[ə′täm·ik ′strək·chər]
(atomic physics)
The arrangement of the parts of an atom, which consists of a massive, positively charged nucleus surrounded by a cloud of electrons arranged in orbits describable in terms of quantum mechanics.
References in periodicals archive ?
Tubes so evacuated were called Geissler tubes, and their use was to lead in the decades that followed to remarkable advances in the study of atomic structure.
By changing the atomic structure at the atomic level, it is possible to design and make a material with a microalloy at the surface.
Irradiation creates defects and causes the ordered atomic structure to become disordered.
The topics include atoms and molecules, stoichiometry, the periodic table and atomic structure, chemical bonding and molecular structure, entropy and the Second Law of Thermodynamics, chemical equilibrium, and nuclear chemistry.
When the laser light interacts with a phase-change material, its atomic structure changes from an ordered crystalline arrangement to a more disordered, or amorphous, configuration.
Make clear the link that solids in crystal form were used by the Braggs; they passed X-rays through the crystals to produce diffraction patterns and from those patterns they identified the atomic structure of that solid.
The researchers revealed the basis for sodium's effect on signaling with a high-resolution 3-D view of an opioid receptor's atomic structure.
The chapter topics are: the atomic structure of graphene and its few-layer counterparts; electronic, chemical, electron spin, mechanical, and thermal properties of graphene; methods for obtaining graphene; characterization techniques; and applications in electronic devices, spintronics, nanoelectromechanical systems, freestanding graphene membranes, graphene-based energy, and superstrong graphene composites.
The first chapter, an overview, is followed by chapters on the structure and function of the cyanobacterial photosystem, the atomic structure of plant photosystem, current models and mechanisms of water splitting, and the specifics of each protein complex.
Developers anticipate this gain in resolution will further support other TEAM objectives, namely, creating the first three-dimensional atomic imaging of defect structures and the first atomic structure determination of a glass.
Cowan, The Theory of Atomic Structure and Spectra, Univ.
The varying radio frequencies can change a crystal's atomic structure.