Related Experiment Video
Updated: Jun 24, 2025

07:03
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
8.7K
A new twist in ferroelectric liquids
1Dipartimento SIMAU, Università Politecnica delle Marche, via Brecce Bianche, Ancona, Italy.
Summary
Chirality spontaneously emerges in a liquid composed of achiral molecules. This study reveals how molecular symmetry breaking can lead to the formation of chiral liquid states.
Area of Science:
- Condensed Matter Physics
- Physical Chemistry
- Materials Science
Background:
- Chirality, or 'handedness,' is a fundamental property in chemistry and biology, typically arising from molecular structure.
- Achiral molecules lack this inherent asymmetry.
- Understanding the emergence of chirality in systems of achiral molecules is crucial for various fields, including materials science and supramolecular chemistry.
Purpose of the Study:
- To investigate the conditions under which spontaneous chirality can emerge in a liquid phase composed of achiral molecules.
- To explore the role of intermolecular interactions and system polarity in inducing chiral symmetry breaking.
- To provide a fundamental understanding of self-organized chirality in soft matter systems.
Main Methods:
- Theoretical modeling and simulations of molecular interactions in a liquid.
- Analysis of order parameters to detect the onset of chiral symmetry breaking.
- Investigation of the influence of external fields and molecular properties on chirality emergence.
Main Results:
- Demonstrated that a highly polar liquid environment can induce spontaneous chiral symmetry breaking in achiral molecules.
- Identified specific intermolecular forces and collective effects that drive the formation of chiral domains.
- Observed a transition from an achiral to a chiral liquid phase under specific conditions.
Conclusions:
- Spontaneous chirality can emerge in achiral molecular liquids due to collective intermolecular effects in polar environments.
- This finding challenges traditional notions of chirality origin and opens new avenues for designing chiral materials.
- The study provides a theoretical framework for understanding self-assembly of chiral structures from achiral building blocks.
Related Concept Videos
Ferromagnetism
2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
Molecular and Ionic Solids
17.1K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
17.1K
Trends in Lattice Energy: Ion Size and Charge
23.8K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
23.8K
Metallic Solids
18.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
18.4K
Characteristics of Fluids
312
Fluids differ from solids primarily in their molecular structure and stress response. Solids have tightly packed molecules with strong intermolecular forces, maintaining their shape and resisting deformation. In contrast, fluids have molecules spaced farther apart with weaker forces, allowing them to flow and deform easily.
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
312
Fermi Level
567
The Fermi-Dirac function is represented by an S-shaped curve indicating the probability of an energy state being occupied by an electron at a given temperature. The Fermi level is the energy level at which there is a fifty percent chance of finding an electron, and it is positioned between the lower-energy valence band and the higher-energy conduction band.
At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...
At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...
567

