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Related Concept Videos

Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

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Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
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Rotation of Asymmetric Top01:11

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By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
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Assembly of the Lipid Bilayer in the ER01:28

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Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
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IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

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Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
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Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion
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The asymmetric Wigner bilayer.

Moritz Antlanger1, Gerhard Kahl1, Martial Mazars2

  • 1Institute for Theoretical Physics and Center for Computational Materials Science (CMS), TU Wien, Wien, Austria.

The Journal of Chemical Physics
|January 3, 2019
PubMed
Summary
This summary is machine-generated.

Mobile point charges self-assemble into ordered Wigner bilayer ground states between charged plates. Their structures depend on plate charge asymmetry and separation, revealing complex colloidal self-assembly strategies.

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Area of Science:

  • Condensed Matter Physics
  • Statistical Mechanics
  • Materials Science

Background:

  • The Wigner bilayer system involves mobile point charges confined between two parallel, charged plates.
  • Understanding particle self-assembly under varying charge densities and inter-layer separation is crucial.

Purpose of the Study:

  • To systematically study the self-assembly of point charges in an asymmetric Wigner bilayer system.
  • To explore ground state configurations and phase transitions as a function of system parameters.

Main Methods:

  • Employed complementary analytical and numerical tools for comprehensive analysis.
  • Utilized Monte Carlo simulations in the canonical ensemble at finite temperatures.

Main Results:

  • Identified a plethora of Wigner bilayer ground states driven by charge neutrality and sublattice self-organization.
  • Characterized emerging structures from simple commensurate lattices to complex internal structures.
  • Quantitatively studied plate over/underpopulation, phase transitions, and long-range forces.

Conclusions:

  • The Wigner bilayer system offers a controllable platform for studying complex colloidal self-assembly.
  • System parameters like inter-layer separation and charge asymmetry dictate emergent ground states.
  • Analytical and simulation results show high accuracy, validating predictions.