The behavior of tethered polymers on gel/gel adhesion is studied with the single-chain mean-field ~SCMF! theory. It is shown that the gel surface structure, the gel/gel adhesion strength, the equilibrium gel/gel distance, and the detailed interface structures can be tailored by specifically designed tethered layers on gel surfaces. The SCMF theory allows to study the effect of various variables...

high purity lead titanate nanopowders in tetragonal form have been successfully prepared bycitric acid gel method using lead nitrate and tetra-n-butyl titanate as pb and ti sourcesrespectively and citric acid as complexing reagent. the precursors were calcined at varioustemperatures ranging from 450 °c to 600 °c for 2 h. fourier transform infraredspectroscopy (ft-ir), x-ray diffraction (xrd) an...

introduction: multiple fields and presence of heterogeneities create complex dose distributions that need three dimensional dosimetry. in this work, we investigated mr-based magic gel dosimetry as a three-dimensional dosimetry technique to measure the delivered dose to bladder and rectum in prostate radiation therapy. materials and methods: a heterogeneous slab phantom including bones was made....

Abstract When suspensions are exposed to shear forces, the particles may form ordered structures depending on their shapes, concentrations, and material. For some processes, e.g., for wet-film coating, it is important know how fast these in fields long persist when relaxed. To obtain information particle structure formation decay time, effective viscosity of nematic Na-hectorite nanosheets was ...

The reliability of wide-bandgap (WBG) semiconductors used as power electronics is closely related to the high thermal conductivity AlN-metalized substrates. Thus, bonding AlN ceramics with metals a key issue for production reliable This paper reports on new method producing AlN/Cu joints by employing novel film metallization process, which involves porous network Cu layer and Ag foil. microstru...