The Ellis R. Lippincott Award is an honor presented by the American Association of Law Libraries (AALL). It recognizes significant contributions to the field of legal information and law librarianship, typically through excellence in legal research, teaching, and the development of legal information resources. Named after a prominent figure in law librarianship, the award underscores the importance of innovation, leadership, and dedication in legal information services.
Ellipsometry is an optical technique used to measure the thickness and optical properties of thin films. It is based on the principle of polarized light and how its polarization state changes upon reflection from a sample surface. The technique is particularly sensitive to changes in film thickness, material composition, and refractive index, making it valuable in various fields, including materials science, semiconductor fabrication, and nanotechnology.
An electrostatic lens is a device used in electron optics to focus and control the trajectories of charged particles, like electrons, using electrostatic fields. The lens works on principles of electrostatics to manipulate the paths of charged particles, similar to how optical lenses direct light. ### Key Features: 1. **Principle of Operation**: Electrostatic lenses typically involve the application of electric fields generated by charged electrodes.
Electroreflectance is an optical characterization technique used to study the electronic properties of materials, particularly semiconductors and thin films. It involves applying an electric field to a material while measuring the reflectivity of light that is incident on the sample. The change in reflectivity as a function of the applied electric field provides insights into the energy levels, band structure, and other electronic properties of the material.
Electron spectroscopy is a technique used to study the electronic structure of materials by analyzing the energies of electrons that are emitted from a sample. This method involves the interaction of photons (light) or electrons with matter, leading to the ejection of electrons from the material. The energies and intensities of these emitted electrons provide valuable information about the electronic states, chemical composition, and bonding characteristics of the sample.
Electron phenomenological spectroscopy typically refers to techniques that use the interaction of electrons with matter to probe and characterize the properties of materials, often at the atomic or molecular level.
Electron Magnetic Circular Dichroism (EMCD) is a spectroscopic technique that exploits the interaction between electrons and magnetic fields to study the electronic and magnetic properties of materials at the atomic level. It is particularly useful for investigating magnetic materials and can provide information about the spin and orbital moments of electrons in a sample. The fundamental principle of EMCD is based on the circular dichroism effect, which is the differential absorption of left-handed versus right-handed circularly polarized light.
Electron Backscatter Diffraction (EBSD) is a microstructural crystallography technique that is typically used in scanning electron microscopy (SEM) to analyze the crystallographic structure of materials at the nanoscale. The technique provides information about the orientation of individual grains in polycrystalline materials, allowing researchers to study grain structure, phase distribution, and defect characterization.
Electrically detected magnetic resonance (EDMR) is a sensitive technique used to study charge-related properties of semiconductor materials, particularly in the context of defects, impurities, and electronic states. It is a variant of traditional electron paramagnetic resonance (EPR) or electron spin resonance (ESR). In EDMR, the magnetic resonance of paramagnetic defects or electron spins is detected through their effect on the electrical properties of a semiconductor sample.
The Eastern Analytical Symposium (EAS) is an annual conference and exhibition focused on analytical chemistry and related fields. It typically features a variety of activities, including: 1. **Technical Sessions**: These sessions include presentations and discussions on the latest research and developments in analytical chemistry, instrumentation, methods, and applications. 2. **Workshops and Short Courses**: The symposium often offers educational opportunities through workshops and short courses aimed at professionals looking to enhance their skills and knowledge in specific areas of analytical science.
The Earle K. Plyler Prize for Molecular Spectroscopy is an award presented annually by the American Physical Society (APS) to recognize outstanding accomplishments in the field of molecular spectroscopy. Established in honor of Earle K. Plyler, a significant contributor to the field, the prize aims to acknowledge individuals who have made important contributions through innovative experimental techniques, theoretical work, or other significant achievements in molecular spectroscopy.
EUCMOS, or the European Consortium for the Molecular Orientation of Solvents, is a collaborative effort typically involving researchers and institutions across Europe. Its focus is on the study and application of molecular orientation in solvents, which is important for various fields, including chemistry, material science, and environmental science. The goals of EUCMOS may include advancing research on solvent properties, developing new experimental techniques, and promoting the exchange of knowledge and data among scientists in the field.
Dynamic light scattering (DLS) is a technique used to measure the size distribution of small particles, typically in the nanometer to micrometer range, in suspension or in a colloidal system. The fundamental principle behind DLS is the analysis of the fluctuations in the intensity of scattered light due to the Brownian motion of the particles. ### Key Concepts: 1. **Brownian Motion**: Particles in a liquid or gas are constantly in motion due to thermal energy.
The term "doublet state" is often used in the context of quantum mechanics, particularly when discussing the energy levels of systems with certain symmetries, such as electron configurations in atoms or molecules. In general terms, a doublet state refers to a quantum state characterized by two closely spaced energy levels or components.
Diffusing-wave spectroscopy (DWS) is a technique used to study the dynamics of complex, opaque materials, such as colloids, biological tissues, and granular media. This method is based on the scattering of light from a sample that is not transparent, where the light is scattered multiple times due to the complex structure and dynamics of the sample.
Diffuse reflectance spectroscopy (DRS) is a technique used to analyze the optical properties of materials by measuring the light that is scattered from a sample. This method is particularly useful for studying opaque or semi-opaque samples, where traditional transmission spectroscopy would not be feasible due to light absorption or scattering. ### Key Concepts: 1. **Theory**: When light is incident on a sample, it can be absorbed, reflected, or transmitted.
Diffuse correlation spectrometry (DCS) is an advanced optical imaging technique primarily used for non-invasive measurements of blood flow in tissues. It leverages the principles of correlation spectroscopy and diffusive light scattering to assess the dynamics of blood flow at a microvascular level. ### Key Concepts of DCS: 1. **Light Interactions**: DCS involves shining near-infrared (NIR) light into biological tissues.
Differential Dynamic Microscopy (DDM) is a quantitative imaging technique used primarily in the study of dynamic processes in biological and soft matter systems. It is particularly valuable for investigating the motion and dynamics of particles in complex environments like colloids, proteins, or cellular systems. The main principles of DDM involve capturing a series of images of a sample over time and analyzing the fluctuations in the intensity of the images to extract information about the movement of particles.
Dielectric spectroscopy, also known as electrical impedance spectroscopy (EIS), is an analytical technique used to study the dielectric properties of materials over a range of frequencies. It involves applying an alternating current (AC) electric field to a sample and measuring how the sample responds, specifically how it polarizes and interacts with the electric field. The response information can provide insights into various physical and chemical properties of the material, including molecular mobility, conductivity, and phase transitions.