Inner sphere electron transfer 1970-01-01
Inner sphere electron transfer is a mechanism of electron transfer that involves a direct coordinate bond formation between the donor and acceptor species during the transfer process. This type of electron transfer is commonly discussed in the context of inorganic and organometallic chemistry, particularly in redox reactions involving metal complexes.
Ion-neutral complex 1970-01-01
An ion-neutral complex is a type of chemical species that forms through the interaction between a charged ion and a neutral molecule or atom. These complexes are generally held together by electrostatic forces, which arise from the attraction between the positively charged ions (cations) or negatively charged ions (anions) and the neutral species.
Ionic atmosphere 1970-01-01
The term "ionic atmosphere" refers to the region around a charged ion in a solution where the concentration of other ions is affected by the presence of that ion. This concept is commonly discussed in the context of electrolyte solutions and electrochemistry. When an ion is dissolved in a solvent (like water), it interacts with the surrounding solvent molecules and other ions in the solution. The charged ion generates an electric field, which influences the distribution of nearby ions based on their charges.
Ionic transfer 1970-01-01
"Ionic transfer" generally refers to the movement of charged particles (ions) from one location to another, often in the context of various scientific and industrial processes. It can occur during chemical reactions, in electrolytes, or during processes such as electrolysis, where ions in solution migrate towards oppositely charged electrodes. The concept is fundamental to various fields, including chemistry, physics, and electrical engineering.
Irving Langmuir Award 1970-01-01
The Irving Langmuir Award is a prestigious honor given by the American Vacuum Society (AVS) to recognize outstanding achievements in the field of surface and vacuum science. Named after the American chemist and Nobel laureate Irving Langmuir, the award is intended to acknowledge significant contributions to the understanding of surfaces and their science, particularly those that pertain to vacuum technology.
Isotopomer 1970-01-01
Isotopomers are molecules that differ only in the isotopic composition of their atoms. They share the same molecular formula and structural arrangement, but at least one atom in the molecule has a different isotope.
LEXO 1970-01-01
LEXO could refer to different things depending on the context. Here are a few possible meanings: 1. **Acronym or Brand Name**: LEXO could be a brand name, product, or acronym in various industries, such as technology, law, finance, or another field. Without additional context, it's difficult to specify.
Lamellar structure 1970-01-01
A lamellar structure refers to a layered arrangement of materials or phases that can be found in various contexts, including materials science, biology, and geology. The term "lamellar" is derived from "lamella," which means a thin layer or plate.
Law of dilution 1970-01-01
The "Law of Dilution" generally refers to a principle in chemistry and physics that explains how the properties of a solute in a solution change as the concentration of that solute decreases. While there are various contexts where this term may apply, two primary areas include: 1. **Chemistry (Concentration and Solubility)**: In chemistry, the Law of Dilution states that when a solute is diluted in a solvent, the concentration of the solute decreases.
Law of multiple proportions 1970-01-01
The Law of Multiple Proportions is a fundamental principle in chemistry that describes how different compounds formed by the same elements can combine in different ratios. According to this law, when two elements can form more than one compound, the ratios of the masses of one element that combine with a fixed mass of the other element will be in simple whole-number ratios. For example, consider the elements carbon and oxygen, which can form carbon monoxide (CO) and carbon dioxide (CO₂).
Lifshitz theory of van der Waals force 1970-01-01
Lifshitz theory of van der Waals forces is a theoretical framework that describes the interaction between macroscopic bodies due to fluctuations in their electromagnetic fields. Named after Soviet physicist Emil M. Lifshitz, this theory generalizes the notion of van der Waals forces beyond simple point charges or ideal systems, taking into account the influence of media, boundary conditions, and temperature.
Linear combination of atomic orbitals 1970-01-01
Linear Combination of Atomic Orbitals (LCAO) is a method used in quantum chemistry and solid state physics to describe the molecular orbitals (MOs) of a molecule in terms of the atomic orbitals (AOs) of the individual atoms that make up the molecule. The fundamental idea is that the molecular orbitals can be approximated as linear combinations of the atomic orbitals.
Liquid junction interface 1970-01-01
The term "liquid junction interface" often refers to the boundary that exists between two different electrolyte solutions in electrochemical cells. This interface plays a crucial role in various electrochemical processes, particularly in the context of measuring ion concentrations, pH, or carrying out electrochemical reactions. ### Key Aspects of Liquid Junction Interface: 1. **Formation**: The liquid junction is formed when two electrolyte solutions come into contact.
Liquid junction potential 1970-01-01
Liquid junction potential is an electrochemical phenomenon that occurs at the interface between two different electrolyte solutions when they are in contact with each other. It arises due to differences in the mobility and concentration of ions in the two solutions. When two electrolyte solutions meet, ion concentration and mobility differences lead to the development of a potential difference. For example, if one solution has a higher concentration of a certain ion compared to the other, the movement of that ion can create a difference in electrical charge across the boundary.
Macromolecular crowding 1970-01-01
Macromolecular crowding refers to the phenomenon that occurs in cells and other biological systems where large molecules (macromolecules) such as proteins, nucleic acids, and polysaccharides are packed closely together. This high concentration of macromolecules can significantly affect biochemical processes, molecular interactions, and the physical properties of solutions. In crowded environments, the following effects are often observed: 1. **Altered Reaction Rates**: Crowding can enhance or inhibit the rates of biochemical reactions.
Marcus theory 1970-01-01
Marcus theory, named after chemist Rudolph A. Marcus, is a theoretical framework used to describe electron transfer reactions in chemistry. Specifically, it provides insights into the rate of electron transfer processes, which are fundamental to many chemical reactions, including those in electrochemistry, biological systems, and materials science. The key aspects of Marcus theory include: 1. **Potential Energy Surface**: The theory describes the energy changes associated with the electron transfer reaction using a potential energy surface.
Mass–action ratio 1970-01-01
The mass-action ratio is a concept used in chemistry, particularly in the context of chemical equilibrium and kinetics. It refers to the ratio of the concentrations (or activities) of the products to the concentrations (or activities) of the reactants in a chemical reaction, each raised to the power of their respective stoichiometric coefficients. The mass-action ratio is crucial for understanding how far a reaction has proceeded towards equilibrium.
Membrane emulsification 1970-01-01
Membrane emulsification is a physical method used to produce emulsions by forcing a dispersed phase (such as oil) through a membrane to create droplets that are uniformly sized and distributed within a continuous phase (such as water). This technique leverages the controlled pore structure of a specialized membrane to achieve precise droplet formation. ### Key Aspects of Membrane Emulsification: 1. **Mechanism**: The process involves the use of a membrane with defined pore sizes.
Metallization pressure 1970-01-01
Metallization pressure refers to the pressure at which a material transitions from an insulating state to a metallic state. This transition typically occurs in certain materials, such as insulators or semiconductors, when subjected to extremely high pressures. In the context of solid-state physics and materials science, this phenomenon is particularly noteworthy in the study of phase transitions.
Microchannel plate detector 1970-01-01
A Microchannel Plate (MCP) detector is a type of photon or particle detection device that utilizes microchannel plate technology to amplify and detect low levels of incident radiation, such as electrons, photons (light), or ions. MCP detectors are commonly used in applications like mass spectrometry, electron microscopy, astronomy, and other fields that require high sensitivity and time resolution.