Crystal structure determination of macromolecules is often hampered by the lack of crystals suitable for diffraction experiments. This article describes a protocol to crystallize the acidic protein bovine -lactoglobulin in the presence of yttrium to yield high-quality crystals that belong to a new space group. The yttrium ions not only are used to engineer the crystallization, but are an integr...

Articles you may be interested in Experimental evidence of high-frequency complete elastic bandgap in pillar-based phononic slabs Appl. Superlensing effect for surface acoustic waves in a pillar-based phononic crystal with negative refractive index Appl. Finite element analysis and experimental study of surface acoustic wave propagation through two-dimensional pillar-based surface phononic crys...

A rare example is reported in which discrete Ag2 L 2 ring and (AgL)∞ chain motifs [L = N,N'-bis(3-imidazol-1-yl-propyl)-pyromellitic diimide] co-crystallize in the same crystal lattice with varying ratios and degrees of disorder. Crystal structures obtained from representative crystals reveal compatible packing arrangements of the cyclic and polymeric isomers within the crystal lattice, which e...

The human testis is composed of seminiferous tubules and interstitium. Within the interstitium, residing Leydig cells can occasionally bear Reinke ́s crystals. The aim of the current study was to investigate Reinke ́s crystals in perivascular and peritubular Leydig cells in control and infertile (cryptorchid) testes. For that purpose, bright field, confocal and transmission electron microscopy we...

Defying the requirements of translational periodicity in 3D, rotation of the lattice orientation within an otherwise single crystal provides a new form of solid. Such rotating lattice single (RLS) crystals are found, but only as spherulitic grains too small for systematic characterization or practical application. Here we report a novel approach to fabricate RLS crystal lines and 2D layers of u...

Here we identify structural inhomogeneity on a micrometer scale across the surface of a CH3NH3PbI3 perovskite single crystal. At the crystal edge a local distortion of the crystal lattice is responsible for a widening of the optical bandgap and faster photo-carrier recombination. These effects are inherently present at the edge of the crystal, and further enhanced upon water intercalation, as a...

In this report, we propose a square lattice photonic crystal hetero-slab-edge microcavity design. In numerical simulations, three surface modes in this microcavity are investigated and optimized by tuning the slab-edge termination τ and gradual mirror layer. High simulated quality (Q) factor of 2.3 × 10(5) and small mode volume of 0.105 μm(3) are obtained from microcavity with τ = 0.80. In expe...

The generalised Madelung problem, that of finding the spatial electric potential within a crystal lattice, is often approached via analytic function theory. But new results can be achieved through careful application of standard theorems from classical electro-statics. In this way we show that the celebrated Madelung constant for the NaCl crystal can be rigorously bounded through symmetry argum...