Fused Silica Tubing

Fused silica tubing is a high-purity, amorphous silica capillary formed into precise, narrow channels for transporting, sampling, or separating fluids, making it valuable where chemical stability and low-volume handling are essential. Its small internal diameter and inert surface support controlled fluid flow, rapid diffusion, and low dead volume, while optical transparency can enable direct monitoring of samples. In neuroscience, fused silica tubing is used in microdialysis, capillary electrophoresis, liquid chromatography, and neural delivery systems to collect or analyze neurotransmitters and other biomolecules. These applications help connect localized brain sampling with quantitative chemical measurements and minimally invasive experimental designs.

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Education

JoVE Core - Electrical Engineering

Reclosers and Fuses

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2024

Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards. A comprehensive protection scheme for radial distribution...

Porosimetry of a Silica Alumina Powder

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2023

Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Surface area and pore size distribution are attributes used by adsorbent and catalyst manufacturers and users to ensure quality control and to determine when products are at the end of their useful lives. The surface area of a porous solid is directly related to its adsorption capacity or catalytic activity. The pore size distribution of an adsorbent or catalyst is...

Circuit Breaker and Fuse Selection

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2024

A circuit breaker is a device engineered to interrupt fault currents and sometimes reclose automatically. When a fault current is detected, the breaker separates the electrical contacts, which generates an arc. This arc is extinguished by methods such as elongation, cooling, or splitting, depending on the breaker's design. Breakers are categorized based on the voltage they operate at and the medium used for arc extinction, such as air, oil, SF6 gas, or vacuum. In high-voltage systems, circuit...

Research

JoVE Journal - Engineering

Fabrication of Silica Ultra High Quality Factor Microresonators

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Cited by 22 •

2012

We describe the use of a carbon dioxide laser reflow technique to fabricate silica resonant cavities, including free-standing microspheres and on-chip microtoroids. The reflow method removes surface imperfections, allowing long photon lifetimes within both devices. The resulting devices have ultra high quality factors, enabling applications ranging from telecommunications to biodetection.

Research

JoVE Journal - Engineering
Free Sample

Fused Filament Fabrication (FFF) of Metal-Ceramic Components

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Cited by 74 •

2019

This study shows multi-material additive manufacturing (AM) using fused filament fabrication (FFF) of stainless steel and zirconia.

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