Hydrogels have become widely used in the fields of tissue engineering and drug delivery. One class of hydrogel is formed from synthetic oligopeptides that self-assemble into a solution of beta-sheet filaments. These filaments can aggregate to form a gel suitable for culture of various cell types. Examples of such self-assembling peptides are RAD16-I, RAD16-II, and KLD-12. One limitation of self...

The changes of magnetic properties upon heat treatment a metastable supersaturated solid solution processed by severe plastic deformation are investigated in-situ AC-hysteresis measurements. Data analyzed in the framework dynamic loss theory, with correlative investigations microstructural properties. evolution hysteresis annealing points out that single-phase remains stable up to 400{\deg}C, t...

The effect of different tetravalent octahedral-site substitutions (M 5 Zr, Tb, and Ce) on the stability of the 1;1 chemically ordered phase in Pb(Mg1/3Nb2/3)O3 (PMN) relaxor ferroelectrics were investigated using X-ray diffractometry and transmission electron microscopy. In their as-sintered form, all the samples adopted a phase-separated microstructure that consisted of nanosized 1;1 ordered d...

Due to solute impurities and freezing-point depression in polycrystalline ice, a complicated and dynamic network of liquid water forms within the solid ice matrix at the boundaries between ice crystal grains. Impurity concentrations, temperature and pressure influence this network structure and impact physical, transport and rheological properties of ice. However, the nature of this internal ne...

Metastable phases are often used to design materials with outstanding properties, which cannot be achieved with thermodynamically stable compounds. In many cases, the metastable phases are employed as precursors for controlled formation of nanocomposites. This contribution shows how the microstructure of crystalline metastable phases and the formation of nanocomposites can be concluded from X-r...

Microstructures havea significant effect on theperformanceof critical components innumerous aerospacemetallic material applications. Examples include panels in airframes that are exposed to high temperatures and sensors used for vibration tuning. This paper addresses the techniques to optimize the microstructure design for polycrystalline metals. The microstructure is quantified with the orient...

We illustrate the flow behaviour of fluids with isotropic and anisotropic microstructure (internal length, layering with bending stiffness) by means of numerical simulations of silo discharge and flow alignment in simple shear. The Cosserat theory is used to provide an internal length in the constitutive model through bending stiffness to describe isotropic microstructure and this theory is cou...

The study of the fundamentals ? ? ? and ? phase transformations induced by high-pressure torsion (HPT) in Ti–Nb-based alloys is presented current work. Prior to HPT, three with 5, 10, 20 wt% Nb were annealed temperature range 700–540°C order obtain (? + ?)-phase state a different amount ?-phase. samples for long time reach equilibrium content ?-solid solution. Scanning electron microscope (SEM)...

Abstract Synthesis of Fe-Cr-Al alloy by powder metallurgy method was developed to produce a bioimplant material with low modulus elasticity. Microstructure characterization and phase identification were carried out support the development bone implant research. The alloys synthesized elemental composition 16 Cr (wt%) that added Al in variations 3, 6, 10 (wt%). synthesis an exceptional combinati...

Abstract The thermally driven evolution of β-phase (Al3Mg2) and its impact on strength are explored for three different commercial producers aluminum alloy 5083-H131 used in armor applications. Specimens were exposed to 100 °C air periods up 30 days. Through a combination optical microscopy computational image analysis, the extent matrix β grain boundary microstructure was assessed. Quasi-stati...