Longitudinal orientation dependence

Fig. 13 Schematic representation of the orientation-dependent elastic torque on a nickel nanowire with longitudinal anchoring in 5CB (a) in equilibrium, and (b) in the presence of a magnetic field, (c) Levitation of the nanowire in a twisted nematic cell [446]. (Copyright 2004, American Association for the Advancement of Science)...

The longitudinal orientation of magnetization corresponds to parallel orientation of the sample in MF of spectrometer and transversal orientation to the perpendicular. The line shift arises from variation of aggregate axis orientation in MF upon angle 7t/2 depends on the magnetization. Values of M, obtained using eqs. 2 and 5 are shown in the table. 

Recently, it has been demonstrated that confocal Raman microscopy can be employed to obtain information on the phase, growth direction and radial crystallographic orientation of GaN nanowires [46, 47]. Fan et al. have demonstrated the orientation-dependent micro-Raman measurements on single wurtzite CdS nano wires with an average diameter of 60 nm [48]. The Raman spectra of nanowires were compared with those of bulk ribbon. As opposed to the Raman spectra fi om the bulk samples, the intensity of most Raman bands of the nanowires exhibited significant dependence on the polarization of the excitation with respect to the nanowire axis. The Raman bands were found to be polarized along the longitudinal axis because of the shape-induced depolarization effect, similar to... 

Figure 18.6 Orientation dependence of the longitudinal piezoelectric coefficient djj in the tetragonal and rhombohedral phases of PZT. From Ref [35].

The orientational dependence of 22 (the longitudinal strain along the y-axis) and 33 (the longitudinal strain along the z-axis) possess the same mathematical form, while the details of the properties are summarized on the anisotropy ratio. Ay, a function of the piezoelectric coefficients. 

An uniaxial mechanical deformation provokes drastic changes in the identation pattern of drawn polymers. Some typical results illustrating the dependence of MH on draw ratio for plastically deformed PE are shown in Fig. 19 a. The quoted experiments 12) refer to a linear PE sample (Mw 80.000) prepared in the usual dumbbell form drawn at a rate of 0.5 cm/min at atmospheric pressure. Identations were performed longitudinally along the orientation axis. Before the neck (A = 1), the... 

Structure, then for every tetrahedron there is another tetrahedron which has the exact opposite orientation the electric fields of the dipoles compensate each other. If, however, all tetrahedra have the same orientation or some other mutual orientation that does not allow for a compensation, then the action of all dipoles adds up and the whole crystal becomes a dipole. Two opposite faces of the crystal develop opposite electric charges. Depending on the direction of the acting force, the faces being charged are either the two faces experiencing the pressure (longitudinal effect) or two other faces in a perpendicular or an inclined direction (transversal effect). 

The saturation magnetization Ms is a specific constant for the material and for magnetic iron oxides is principally determined by the Fe2 + ion content. The ratio of remanent magnetization to saturation magnetization (Mr/Ms) for the tape depends mainly on the orientation of the pigment needles with respect to the longitudinal direction of the tape, and should approach the theoretical maximum value of unity as closely as possible. 

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