Double-layer Coating
Double-layer Coating - Related Videos
01:30
The Electrical Double Layer
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2026
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
12:40
Preparation and Pathogen Inactivation of Double Dose Buffy Coat Platelet Products using the INTERCEPT Blood System
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This article describes the process used by Örebro University Hospital to produce double dose buffy coat platelet concentrates prepared from whole blood donations and treated with the INTERCEPT Blood System for pathogen inactivation. The in vitro quality of the final platelet units are evaluated over 7 days of storage.
09:32
Isolation of Human Monocytes by Double Gradient Centrifugation and Their Differentiation to Macrophages in Teflon-coated Cell Culture Bags
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We present a simple and efficient protocol for the generation of human macrophages. Buffy coats are processed by double density gradient centrifugation and isolated monocytes are then differentiated to macrophages in Teflon-coated cell culture bags. This maximizes macrophage yields and facilitates cell harvesting for subsequent experiments.
09:56
Layer-by-layer Collagen Deposition in Microfluidic Devices for Microtissue Stabilization
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Cited by 7 •
2015
The creation of functional microtissues within microfluidic devices requires the stabilization of cell phenotypes by adapting traditional cell culture techniques to the limited spatial dimensions in microdevices. Modification of collagen allows the layer-by-layer deposition of ultrathin collagen assemblies that can stabilize primary cells, such as hepatocytes, as microfluidic tissue models.
14:32
Thin-Layer Chromatography - Student Protocol
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2020
Source: Lara Al Hariri and Ahmed Basabrain at the University of Massachusetts Amherst, MA, USA Effects of Mobile Phase Composition on Compound SeparationExpand In this section of the lab, you will use TLC to compare how well pure hexane and a mixture of 60% hexane and 40% ethyl acetate can separate phenol, benzoic acid, and butyl phenyl ether by measuring the distance the compound traveled in each solvent. Before starting the lab, put on a lab coat, safety glasses, and nitrile gloves.
FAQs
The inner layer is selected to promote adhesion or regulate interactions with the substrate, while the outer layer addresses the exposed surface. Depending on the design, that outer layer can provide protection, selective permeability, or biological functionality. Separating these roles allows the surface to combine substrate compatibility with a controlled interface for cells or biomolecules.
Independent tuning lets researchers adjust adhesion-related behavior at the substrate boundary without changing every property of the exposed surface. They can therefore modify surface chemistry, stability, or biological interactions through the appropriate layer. This modular approach supports controlled experiments because changes to one functional requirement need not eliminate the contribution of the other layer.
A single coating may not simultaneously provide strong attachment to the substrate, protection from the surrounding environment, selective permeability, and biological functionality. Double-layer Coating separates these demands between two sequentially deposited materials. That arrangement broadens the design options for surfaces whose performance depends on both durable substrate contact and carefully regulated external interactions.
The outer layer forms the surface presented to the biological environment, so its chemistry and functional properties can influence interactions with cells or biomolecules. It may also control selective permeability, determining which interactions or transfers the surface permits. Adjusting this exposed layer helps researchers create interfaces with more deliberate biological behavior rather than relying only on the substrate.
The process begins with a substrate and deposits the inner material first, allowing that layer to address adhesion or interactions with the underlying surface. A distinct outer material is then deposited over it to provide protection, selective permeability, or biological functionality. Keeping the layers sequential and functionally distinct preserves the method's modular design.
Applications include modified laboratory materials, biosensors, implants, and drug-delivery systems. In each case, the coating can be tailored to alter surface chemistry, stability, or interactions with cells and biomolecules. The approach is useful when a device or material needs a more compatible, durable, or responsive surface than its untreated substrate can provide.
Researchers can target improved control over surface chemistry, greater stability, and more compatible interactions with biological components. The design may also support selective permeability or responsive biological functionality, depending on the outer layer. These outcomes are valuable for developing biomedical surfaces that remain durable while presenting a deliberately engineered interface to cells, biomolecules, or surrounding fluids.