International Tables for Crystallography (2006). Vol. B. ch. 4.4, pp. 449-465
https://doi.org/10.1107/97809553602060000566 |
Chapter 4.4. Scattering from mesomorphic structures
Contents
- 4.4. Scattering from mesomorphic structures (pp. 449-465) | html | pdf | chapter contents |
- 4.4.1. Introduction (pp. 449-451) | html | pdf |
- 4.4.2. The nematic phase (pp. 451-453) | html | pdf |
- 4.4.3. Smectic-A and smectic-C phases (pp. 453-456) | html | pdf |
- 4.4.4. Phases with in-plane order (pp. 456-463) | html | pdf |
- 4.4.4.1. Hexatic phases in two dimensions (pp. 457-458) | html | pdf |
- 4.4.4.2. Hexatic phases in three dimensions (pp. 458-460) | html | pdf |
- 4.4.4.3. Crystalline phases with molecular rotation (pp. 460-462) | html | pdf |
- 4.4.4.4. Crystalline phases with herringbone packing (pp. 462-463) | html | pdf |
- 4.4.5. Discotic phases (p. 463) | html | pdf |
- 4.4.6. Other phases (pp. 463-464) | html | pdf |
- 4.4.7. Notes added in proof to first edition (pp. 464-465) | html | pdf |
- References | html | pdf |
- Figures
- Fig. 4.4.1.1. Illustration of the progression of order throughout the sequence of mesomorphic phases that are based on `rod-like' molecules (p. 449) | html | pdf |
- Fig. 4.4.1.2. Schematic illustration of the real-space molecular order and the scattering cross sections in reciprocal space for the: (a) nematic; (b) smectic-A; and (c), (d) smectic-C phases (p. 450) | html | pdf |
- Fig. 4.4.1.3. Chemical formulae for some of the molecules that form thermotropic liquid crystals (p. 451) | html | pdf |
- Fig. 4.4.3.1. (a) Schematic illustration of the necessary condition for coupling between order parameters when ; (p. 455) | html | pdf |
- Fig. 4.4.3.2. Specular reflectivity of ∼8 keV X-rays from the air–liquid interface of the nematic liquid crystal 8OCB 0.05 K above the nematic to smectic-A transition temperature (p. 456) | html | pdf |
- Fig. 4.4.4.1. (a) Schematic illustration of the geometry and (b) kinematics of X-ray scattering from a freely suspended smectic film (p. 457) | html | pdf |
- Fig. 4.4.4.2. Typical scans from the crystalline-B phases of (a) a free film of 7O.7 (p. 457) | html | pdf |
- Fig. 4.4.4.3. Scattering intensities in reciprocal space from two-dimensional: (a) liquid; (b) crystal; (c) normal hexatic; and tilted hexatics (p. 458) | html | pdf |
- Fig. 4.4.4.4. Scattering intensities in reciprocal space from three-dimensional tilted hexatic phases (p. 459) | html | pdf |
- Fig. 4.4.4.5. The phase diagram for free films of 7O.7 as a function of thickness and temperature (p. 459) | html | pdf |
- Fig. 4.4.4.6. Location of the Bragg peaks in one 60° section of reciprocal space for the three-dimensional crystalline-B phases observed in thick films of 7O.7 (p. 461) | html | pdf |
- Fig. 4.4.4.7. (a) The `herringbone' stacking suggested for the crystalline-E phase in which molecular rotation is partially restricted (p. 462) | html | pdf |
- Fig. 4.4.5.1. Schematic illustration of the molecular stacking for the discotic (a) and (b) phases (p. 463) | html | pdf |
- Tables
- Table 4.4.1.1. Some of the symmetry properties of the series of three-dimensional phases described in Fig. 4.4.1.1 (p. 449) | html | pdf |
- Table 4.4.1.2. The symmetry properties of the two-dimensional hexatic and crystalline phases (p. 450) | html | pdf |
- Table 4.4.2.1. Summary of critical exponents from X-ray scattering studies of the nematic to smectic-A phase transition (p. 453) | html | pdf |