A JKR (Johnson-Kendall-Roberts) formalism is used to extract the Young modulus, contact radius, and energy release rate simply from retraction curve of a borosilicate glass colloidal probe polydimethylsiloxane (PDMS) surface using an atomic force microscope. PDMS samples ranged perfectly elastic those with incipient viscoelasticity. The dependence crack speed verified fracture mechanics-based m...

Gamma radiation induced changes in local structure around the probe atom (Hafnium) were investigated in sodium barium borosilicate (NBS) glass, used for immobilization of high level liquid waste generated from the reprocessing plant at Trombay, Mumbai. The (NBS) glass was doped with 181Hf as a probe for time differential perturbed angular correlation (TDPAC) spectroscopy studies, while for stud...

The influence of a changing glass topology on local mechanical properties was studied in a multitechnique nanomechanical approach. The glass response against sharp contacts can result in structural densification, plastic flow, or crack initiation. By using instrumented indentation testing, the mechanical response was studied in different strain rate regimes for a sodium borosilicate glass (NBS)...

Composite scaffolds were obtained by mixing various amounts (10, 30 and 50 weight % [wt %]) of borosilicate bioactive glass and poly(l-lactide-co-ε-caprolactone) (PLCL) copolymer. The composites were foamed using supercritical CO₂. An increase in the glass content led to a decrease in the pore size and density. In vitro dissolution/reaction test was performed in simulated body fluid. As a funct...

An analytical model of electric field assisted diffusion ions into glass is extended to include two indigenous mobile ion species that are initially uniformly distributed within the glass. A quasi-stationary state solution includes effects and applicable when invasive have a lower mobility than presented. It relevant electrical poling soda-lime borosilicate glasses with concentrations (Na + , K...

B2O–SiO2 borosilicate glasses in a specific composition range show spinodal-type phase separation by heat-treatment at around those glass transition temperatures, and porous or glass-ceramics can be easily obtained via an acid treatment after the separation. We have studied preparation conditions of SrTiO3-precipitated for photocatalyst hydrogen generation using solar energy. It was found that ...

The two-dimensional wide-angle X-ray diffraction technique was applied to a Cm-doped borosilicate glass in beryllium container. experiment involved high-energy beam and an image plate. It is shown that it possible extract the structure factor of radioactive successfully from patterns compare with pristine one. Striking differences appear under first peak, revealing new sub-structures for glass....

The dependence of the glass transition temperature on silicate composition as well as on borate composition is discussed. Some new experimental results on borosilicate glass-enamels are put together with the existing literature data. It is demonstrated that in the glass transition interval the activation energy E(Tg) for viscous flow is related to the glass transition temperature. The activatio...

The damage threshold and damage mechanism of extreme-ultraviolet Sc/Si multilayer mirror coatings are investigated with focused nanosecond pulses at 46.9-nm radiation from a compact capillary-discharge laser. Damage threshold fluences of approximately 0.08 J/cm2 are measured for coatings deposited on both borosilicate glass and Si substrates. The use of scanning and transmission electron micros...