A Ti–46Al(at.%) polysynthetically twinned alloy, which contained a characteristic lamellar spacing of k 1⁄4 1:3 lm, was converted to a polycrystalline fully-lamellar microstructure with k 1⁄4 19:9 nm using an a-phase solution treatment followed by a2 þ c aging. Tensile experiments, performed on microsamples extracted from within single grains of the polycrystalline material, illustrated that ul...

We examine the stability of lamellar stacks in the presence of an electric field, E0, applied normal to the lamellae. Calculations are performed with self-consistent field theory (SCFT) supplemented by an exact treatment of the electrostatic energy for linear dielectric materials. The calculations identify a critical electric field, E 0, beyond which the lamellar stack becomes unstable with res...

The self-assembly of sphere-forming triblock copolymers confined between two thin homogeneous surfaces is investigated based on mean-field dynamic density functional theory. The morphologies deviating from the bulk sphere-forming phase are revealed, including cylinders oriented perpendicular to the surface, cylinders oriented parallel to the surface, perforated lamellae and lamellae by varying ...

Adult Boltenia villosa (phylum, Chordata; subphylum, Urochorda [Tunicata]; class, Ascidiacea) were collected intertidally. Gametes and embryos were handled according to standard procedures (Fernald, 1959; Costello et al., 1957). Living embryos in gastrula or neurula stages were pipetted into the fixative accompanied by a small amount of seawater. The fixative was either (a) 2.7% Os04 in approxi...

(A) A T2 image of a human lumbar spine IVD disc. (B) FA map obtained from the DTI data. Notice the difference in FA signal between the anterior and posterior parts of the IVD with the yellow highlighted square indicating the lamellae’s anisotropic behavior, also viewed histologicaly in figure (C). Notice the substantial gaps between the lamellae appearing in this region. (D) The site of connect...