Pattern perpendicular

A sketch of the perforated lamellar morphology is depicted in Fig. 2. Depending on the point of view, the 2D projection exhibits different patterns perpendicular to the layers of the perforated lamellar structure the projection appears like a hexagonal honeycomb mesh (Fig. 2a). By contrast, the parallel view (Fig. 2b) leads to rows of spots. 

Fig. 9.5 Model scheme used for simulation of recording process on a patterned perpendicular medium with a soft magnetic under layer by a single pole head...

For a given oscillation photograph there is a maximum value of the oscillation range, A, which avoids overlapping of spots on a film. The overlap will occur in the region of the diffraction pattern perpendicular to the rotation axis and at the maximum Bragg angle. This is where RLPs... 

Since the polymer chains in single crystals are most often oriented perpendicular to their large flat surface, diffraction patterns perpendicular to the 001 plane are common. Tilting of the sample yields diffraction from other planes. The interpretation of the spots obtained utilizes Bragg s law in a manner identical to that of X-rays. 

The qualitative observations can be characterized in the following way In the specimen loaded to a maximum strain of 0.001 a distributed microcracking pattern perpendicular to the fibres can be observed. No cracks penetrate the specimen from one side to the other and many cracks are limited to a length corresponding to the average distance between adjacent fibres. 

The first chopped radiometer on a stabilized platform, functioning in a line by line scanning pattern perpendicular to the direction of spacecraft motion, was the High Resolution Infrared Radiometer (HRIR) on Nimbus II (1964) shown in Fig. 5.4.10. The purpose of the investigation was to obtain cloud images on the dark hemisphere... 

Fig. 1.32 The axial reflections of the SmA phase. In this phase the layers are disordered, thus causing the peaks to be difluse. The projection of the electron density pattern perpendicular to the layers has the profile of a more or less sinusoidal wave, in contrast to the more detailed pattern that a perfect layer structure would give. The Fourier transform of this profile has a single dominant term and this explains why the characteristic diffraction pattern of the SmA phase has only a single strong axial reflection corresponding to the layer spacing and the higher orders, i.e., 0 0 2, 0 0 3 etc., are generally very weak...

The surface unit cell of a reconstructed surface is usually, but not necessarily, larger than the corresponding bulk-tenuiuated two-dimensional unit cell would be. The LEED pattern is therefore usually the first indication that a recoustnictiou exists. However, certain surfaces, such as GaAs(l 10), have a recoustnictiou with a surface unit cell that is still (1 x i). At the GaAs(l 10) surface, Ga atoms are moved inward perpendicular to the surface, while As atoms are moved outward. 

In this section, we concentrate on the relationship between diffraction pattern and surface lattice [5], In direct analogy with the tln-ee-dimensional bulk case, the surface lattice is defined by two vectors a and b parallel to the surface (defined already above), subtended by an angle y a and b together specify one unit cell, as illustrated in figure B1.21.4. Withm that unit cell atoms are arranged according to a basis, which is the list of atomic coordinates within drat unit cell we need not know these positions for the purposes of this discussion. Note that this unit cell can be viewed as being infinitely deep in the third dimension (perpendicular to the surface), so as to include all atoms below the surface to arbitrary depth. 

Baffle generally a flat plate attached to and perpendicular to the wall of a mixing vessel to alter the fluid circulation pattern and prevent excessive swirl of the fluid in the vessel. ... 

A diffraction pattern of a single MWCNT (Fig. 1) contains in general two types of reflexions (i) a row of sharp oo.l (/ = even) reflexions perpendicular to the direction of the tube axis, (ii) graphite-like reflexions of the type ho.o (and hh.o) which are situated in most cases on somewhat deformed hexagons inscribed in circles with radii gho.o (or hh.o)-... 

Fig. 2. Evolution of an ED pattern on tilting the specimen about an axis perpendicular to the lube axis. (a.b,c) The spots A and B as well as C and D approach one another. In (d) the spots A and B coalesce. In (f) the spots C and D form a single symmetrical streak. The positions of the spots oo.l remain unchanged. On moving the spots A and B as well as C and D describe arcs of the same circles centred on the origin [9].

Simulated SWCNT ED patterns will be presented below. Tbe most striking difference with tbe MWCNT ED patterns is tbe absence of tbe row of sharp oo.l reflexions. In tbe diffraction pattern of ropes there is still a row of sharp reflexions perpendicular to the rope axis but which now corresponds to the much larger interplanar distance caused by the lattice of the tubes in the rope. The ho.o type reflexions are moreover not only asymmetrically streaked but also considerably broadened as a consequence of the presence of tubes with different Hamada indices (Fig. 3). 

Doping of alkali-metals into CNTs has been examined [11]. The X-ray powder diffraction (XRD) patterns of the K- or Rb-doped CNTs show that alkali-metals are intercalated between the CNT layers. The hexagonal unit cell is essentially the same as that of the stage-1 alkali-metal intercalated graphite ACg (A=K, Rb). For a sample doped with Rb, the observed lattice parameter of the perpendicular... 

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