Lipid Monolayer Mixing
Lipid Monolayer Mixing - Related Videos
04:22
Sample Preparation using a Lipid Monolayer Method for Electron Crystallographic Studies
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Cited by 4 •
2021
Lipid monolayers have been used as a foundation for forming two-dimensional (2D) protein crystals for structural studies for decades. They are stable at the air-water interface and can serve as a thin supporting material for electron imaging. Here we present the proven steps on preparing lipid monolayers for biological studies.
07:54
Fluorescence Recovery after Merging a Droplet to Measure the Two-dimensional Diffusion of a Phospholipid Monolayer
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Cited by 2 •
2015
We present a new technique to measure the lateral diffusion of a surface active species at the fluid-fluid interface by merging a droplet monolayer onto a flat monolayer.
09:41
Formulating and Characterizing Lipid Nanoparticles for Gene Delivery using a Microfluidic Mixing Platform
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Cited by 18 •
2021
Lipid nanoparticles are developed using a microfluidic mixing platform approach for mRNA and DNA encapsulation.
14:18
Synthesis, Assembly, and Characterization of Monolayer Protected Gold Nanoparticle Films for Protein Monolayer Electrochemistry
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Cited by 1 •
2011
Alkanethiolate stabilized gold colloids known as monolayer protected clusters (MPCs) are synthesized, characterized, and assembled into thin films as an adsorption interface for protein monolayer electrochemistry of simple redox protein like Pseudomonas aeruginosa azurin (AZ) and cytochrome c (cyt c).
03:38
Structure of Lipids
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2020
Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...
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Headgroup interactions influence how neighboring lipids associate at the air–water interface, while hydrocarbon packing affects how tightly their nonpolar regions arrange. Molecular proportions combine with these interactions to determine whether components distribute uniformly or form distinct regions. This relationship helps bioengineers connect lipid composition with the organization and stability of membrane-like interfacial films.
Separate phases can arise when the mixed lipids do not interact equivalently under the interfacial conditions. Differences in headgroup interactions, hydrocarbon packing, or molecular proportions may favor local organization rather than complete miscibility. Observing distinct versus uniform phases therefore provides information about molecular compatibility and helps reveal how composition controls membrane organization.
Surface pressure provides a measurable indication of how the interfacial film responds as lipid composition and organization change. Variations in pressure can be considered alongside phase behavior to assess packing, miscibility, and film stability. In bioengineering studies, these measurements help relate molecular-level interactions to the functional performance of membrane-like materials and surfactant films.
After lipids spread at the interface, lateral diffusion allows them to move within the molecular layer and encounter other lipid species. The resulting redistribution is shaped by headgroup interactions, hydrocarbon packing, and composition. Studying the organization that develops after this movement can distinguish more uniform films from systems that retain separate domains or phases.
A study generally combines lipid spreading at an air–water interface with observation of how the components redistribute within the layer. Researchers then examine phase behavior and measure surface pressure to relate interfacial organization to composition. Comparing different molecular proportions reveals whether the resulting film is more uniform, phase-separated, stable, or otherwise composition-dependent.
The approach is useful when researchers need to characterize membrane organization, lipid–protein interactions, or surfactant behavior in a controlled interfacial film. Its composition-dependent phase measurements also support the design of biosensors, drug-delivery systems, and biomimetic materials. These applications benefit from understanding how molecular organization influences film stability and function.