Alumina Substrate
Alumina Substrate - Related Videos
09:11
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...
11:13
Identification of Kinase-substrate Pairs Using High Throughput Screening
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Cited by 1 •
2015
Protein phosphorylation is a central feature of how cells interpret and respond to information in their extracellular milieu. Here, we present a high throughput screening protocol using kinases purified from mammalian cells to rapidly identify kinases that phosphorylate a substrate(s) of interest.
04:25
Substrate Oxidation Assay in Cultured Cells: An In Vitro Assay to Quantify Substrate Oxidation in Cells by Measuring Radioactive Signals from Trapped CO2
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2025
This video demonstrates a quantification technique for CO2 released during substrate oxidation using 14C-radiolabeled substrates. The released 14CO2 is trapped in an alkaline solution and quantified by a scintillation counter. The oxidation of different substrates varies between tissues and reflects the pathophysiological condition of the tissue.
11:53
Substrate Generation for Endonucleases of CRISPR/Cas Systems
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Cited by 4 •
2012
CRISPR/Cas systems mediate adaptive immunity in Bacteria and Archaea. Many Cas proteins are proposed to act as endoribonucleases acting on crRNA precursors of varying length. Here we illustrate three different approaches to generate pre-crRNA substrates for the biochemical analysis of Cas endonuclease activity.
08:59
Defining Substrate Specificities for Lipase and Phospholipase Candidates
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Cited by 10 •
2016
Many predicted (phospho)lipases are poorly characterized with regard to their substrate specificities and physiological functions. Here we provide a protocol to optimize enzyme activities, search for natural substrates, and propose physiological functions for these enzymes.
FAQs
The ceramic body electrically separates neighboring components while allowing heat to move away from regions that generate or receive thermal energy. This combination helps maintain a stable platform for deposited films, electrodes, and microfabricated features. In bioengineering devices, it can support reliable operation when electrical components must remain isolated without abandoning mechanical and thermal stability.
Chemical stability helps the substrate retain its structure and functional surface when exposed to aqueous or chemically reactive environments. That durability is important because biosensors, microfluidic systems, and cell-interfacing platforms may operate near biological fluids for extended periods. Maintaining the support can help preserve the placement and behavior of films, electrodes, or other integrated features.
Surface modification adds biomolecules or coatings to the otherwise stable ceramic interface, creating controlled sites for interaction with cells or biological fluids. The modification changes the surface-facing biological response without requiring the bulk material to lose its mechanical or thermal stability. This separation allows researchers to tailor interfacial behavior while retaining the substrate’s underlying support functions.
Alumina substrates can support several device formats, including biosensors, microfluidic devices, and cell-interfacing platforms. Their value differs by application: biosensors can use the stable surface for deposited functional features, microfluidic devices can rely on durable support in aqueous conditions, and cell-interfacing systems can combine the ceramic structure with modified surfaces designed for controlled biological contact.
A general workflow begins with selecting the ceramic support for its required electrical, chemical, thermal, and mechanical functions. Researchers then place or deposit films, electrodes, or microfabricated features on its surface. When biological interaction must be controlled, they add a biomolecule-containing surface modification or coating before integrating the substrate into a biosensor, microfluidic device, or cell-interfacing platform.
The substrate itself provides a stable physical and electrical foundation rather than serving as the biological recognition element in every design. Its insulation can separate electrical functions, while chemical and thermal resistance support operation in demanding environments. After surface modification, the assembled platform can enable controlled interactions with cells or biological fluids, supporting device-specific sensing or interfacing functions.