The Hanford Waste Treatment and Immobilization Plant will vitrify radioactive waste into borosilicate glass. high-level (HLW) glass formulations are constrained by processing property requirements, including restrictions aimed at avoiding detrimental impacts of spinel crystallization in the melter. To understand impact chemistry on crystallization, two HLW glasses precipitating small (∼5 μm) cr...

In this study, different glasses were investigated to improve reusable investments. Borosilicate glass (BSG) powder and soda-lime glass (SLG) powder were prepared by milling broken beakers and microscope slides, respectively, and used in experimental investments (I-BSG, I-SLG) by blending glass powder (10 wt%) with cristobalite (90 wt%). Some properties and casting fits were evaluated with comm...

We report two-photon excited emission in borosilicate glasses doped with ZnSe nanocrystalline quantum dots. The emission, predominantly near the two-photon energy and detected in the direction of the excitation beam, is in the visible, and the fundamental excitation is the near-infrared output of a tunable femtosecond laser. Depending on the two-photon energy, timeand frequency-resolved measure...

Highly mineralized biological materials such as nacre (mother of pearl), tooth enamel or conch shell boast unique and attractive combinations of stiffness, strength and toughness. The structures of these biological materials and their associated mechanisms are now inspiring new types of advanced structural materials. However, despite significant efforts, no bottom up fabrication method could so...

We discuss the dynamics of ultrashort pulsed laser excitation in bulk optical silica-based glasses (fused silica and borosilicate BK7) well-above the permanent modification threshold. We indicate subsequent structural and thermomechanical energy relaxation paths that translate into positive and negative refractive index changes, compression and rarefaction zones. If fast electronic decay occurs...

One of the most significant materials in a solar panel is glass, which provides transparency, UV protection as well mechanical and chemical resistance. In this work, we describe production prototypes four modules made using borosilicate, zinc-tellurite, Pr$^{3+}$ doped float glass cover materials. The performance these was evaluated under simulator, device developed to monitor all real conditio...

Abstract The chemical durability of borosilicate glass used to confine nuclear wastes is known vary nonlinearly with their composition, making dissolution rate predictions difficult. Here, we focus on the effect Al, an important oxide these materials. initial and residual rates were investigated through experiments conducted at 90 °C pH 9. Our results show that low Al content glasses dissolve i...

All-optical switching of 75 fs pulses centered at 1560 nm, driven by 270 fs, 1030 nm in a dual-core optical fiber exhibiting high index contrast is presented. The made thermally matched pair lead silicate and borosilicate glasses used as core cladding material, respectively. novel approach based on nonlinear balancing asymmetry, control pulse intensity induced group velocity reduction the fast ...

Single and multiple pulse laser damage studies are performed in Suprasil silica and BK-7 borosilicate glasses. Experiments are made in the bulk of materials at 1.064microm with nanosecond pulses, using an accurate and reliable measurement system. By means of a statistical study on laser damage probabilities, we demonstrate that the same nano-precursors could be involved in the multiple shot and...

A novel bioactive glass scaffold ICIE16/BSG has been prepared from a mixture of two different melt-derived glasses: a silicate bioglass (ICIE16) and a borosilicate bioglass (BSG). Combined processing techniques (gel casting and foam replication) were used to form three-dimensional, interconnected porous monolith scaffolds (Orgaz et al., 2016) [1]. They were then nitrided with a hot ammonia flow...