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Nodes planes

Expanded, node-plane containing radial function with Tanabe-Sugano diagram. Compatible with spectrochemical series. Compatible with nephelauxetic series (one (3) A, (3-Bo, pCo ... [Pg.23]

As a complementary approach a mean-field method is used in combination with the finite element method to investigate the FGM. To compare the predictions with the periodic unit cell simulations, the FGM part is divided into nine sublayers. Each of them consists of two bi-quadratic 8-node plane elements over the thickness, and only one element is used in the horizontal direction. The parts of pure alumina and pure nickel are modeled by three and 12 elements, respectively. In each sublayer the volume fractions of the phases are constant. In addition, the center sublayer can be split into a metal-matrix and a ceramic-matrix half sublayer. The properties of the particular material on the meso-structural level within the finite element calculation are described via a con-... [Pg.76]

We calculate thermal stress in thermoelectric device by means of conventional finite element method using calculated temperature distributions. Two-dimensional four-node plane strain elements are used in calculation. [Pg.486]

Trapping devices may also be designed without the coupling layer between the transducer and the resonance chamber, that is, the transducer is in direct contact with the liquid in the chamber. This has been demonstrated by, for example, Spengler et al." A 5 x 15 mm transducer was used in contact with a 5 mm wide channel formed by a 0.8 mm polytetrafluoroethylene (PTFE) spacer. The channel height corresponded to one wavelength, that is, two pressure node planes were generated... [Pg.1243]

Fig. 4.16. A graphic representation of the 2-D hamonic oscillator wave function (isolinesj. Panels a) through ( i) show the wave functions labeled by a pair of oscillation quantum numbers (ui, V2). The higher the energy, the la ger the number of node planes. A reader acquainted with the wave functions of the hydrogen atom will easily recognize a striking resemblance between these figures and the orbitals. Fig. 4.16. A graphic representation of the 2-D hamonic oscillator wave function (isolinesj. Panels a) through ( i) show the wave functions labeled by a pair of oscillation quantum numbers (ui, V2). The higher the energy, the la ger the number of node planes. A reader acquainted with the wave functions of the hydrogen atom will easily recognize a striking resemblance between these figures and the orbitals.
Fig. 8.31. The benzene molecule. The hybridization concept allows us to link the actual geometiy of a molecule with its electronic structure (al. The sp hybrids of the six carbon atoms form the six o CC bonds, and the structure is planar. Each caibon atom thus uses two out of its three s[7 hybrids the third one lying in the same plane protrudes toward a hydrogen atom and forms the a CH bond. In this way, each caibon atom uses its three valence electrons. The fourth one resides on the 2p orbital that is perpendicular to the molecular plane. The six 2p orbitals form six rr molecular orbitals, out of which three are doubly occupied and three are empty (b). The doubly occupied ones are shown in panel (b). The (fio of the lowest energy is an all-in-phase linear combination rf the 2p atomic orbitals (only their upper lobes are shown). The and Fig. 8.31. The benzene molecule. The hybridization concept allows us to link the actual geometiy of a molecule with its electronic structure (al. The sp hybrids of the six carbon atoms form the six o CC bonds, and the structure is planar. Each caibon atom thus uses two out of its three s[7 hybrids the third one lying in the same plane protrudes toward a hydrogen atom and forms the a CH bond. In this way, each caibon atom uses its three valence electrons. The fourth one resides on the 2p orbital that is perpendicular to the molecular plane. The six 2p orbitals form six rr molecular orbitals, out of which three are doubly occupied and three are empty (b). The doubly occupied ones are shown in panel (b). The (fio of the lowest energy is an all-in-phase linear combination rf the 2p atomic orbitals (only their upper lobes are shown). The and <fi2 correspond to higher energy and to the same energy, and have a single node (apart from the node plane of the AOs). The (ps orbital that apparently completes all combinations of single-node molecular orbitals is redundant (that is why it is in parentheses), because the orbital represents a linear combination of the fix and <p2.
Therefore, only certain wavelengths are allowed, i.e., those that have a node plane at the boundaries of the three-dimensional conduction band. Hence, the conductivity is quantum size Kmited. We observe the quantum effects of conductivity. These results motivated us to work together with the Cologne group and to find out whether there are similarities between mesoscopic metals and organic metals [5], as we suspected that the conductivity phenomena in conductive polymers may be better understood taking nanostructures into account. [Pg.1051]

FIGURE 1.12 Model of electron wave density distribution, barrier heights, and crystalline core in the primary particles, and visualization of the limitation of electron wavelength in the nanometallic primary particles to such values that have a node plane at the particle walls. (Reprinted from Wessling, B., Handbook of Organic Conductive Molecules and Polymers, vol. 3, ed. H.S. Nalwa, Wiley, Chichester, 1997, 497-632. With permission. Copyright 1997 John Wiley Sons Limited)... [Pg.1059]

There are two ways to simulate the interface between frame elements modeled with Zeus-NL and between continuum elements modeled with Vector2. One method is to use membrane elements for the wall with drilling (out-of-plane rotational) DOFs, but this is not available in VecTor2. The second method and the one used in this study is to simulate displacement and rotational compatibility between nodes of frame elements having three DOFs per node and nodes of 4-noded plane-stress element having two... [Pg.228]


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See also in sourсe #XX -- [ Pg.5 , Pg.5 , Pg.486 ]




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