Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

9.7K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
9.7K
Structures of Solids02:22

Structures of Solids

14.3K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
14.3K
X-ray Crystallography02:18

X-ray Crystallography

24.0K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
24.0K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.9K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.9K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

43.2K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
43.2K
Metallic Solids02:37

Metallic Solids

18.5K
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....
18.5K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

All-Scale Structural Optimization of Resiliently Crystalline Na-Ce-Sn-S Chalcogel for Efficient Oxygen Evolution Reaction Electrocatalyst.

Angewandte Chemie (International ed. in English)·2025
Same author

Bifacially Engineered Perovskite-Based Synaptic Memristors Achieve High Linearity and Symmetricity for Accurate and Robust Neuromorphic Computing.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

Author Correction: Multiscale structural control of thiostannate chalcogels with two-dimensional crystalline constituents.

Nature communications·2024
Same author

Exploring Doping Mechanisms and Modulating Carrier Concentration in Copper Iodide: Applications in Thermoelectric Materials.

Small (Weinheim an der Bergstrasse, Germany)·2024
Same author

Cation-eutaxy-enabled III-V-derived van der Waals crystals as memristive semiconductors.

Nature materials·2024
Same author

Transformation of K<sub>2</sub>Sb<sub>8</sub>Q<sub>13</sub> and KSb<sub>5</sub>Q<sub>8</sub> Bulk Crystals to Sb<sub>2</sub>Q<sub>3</sub> (Q = S, Se) Nanofibers by Acid-Base Solution Chemistry.

Journal of the American Chemical Society·2023
Same journal

Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".

Science (New York, N.Y.)·2026
Same journal

Local signals, systemic decline.

Science (New York, N.Y.)·2026
Same journal

The mechanics of liver regeneration.

Science (New York, N.Y.)·2026
Same journal

Computing in a memory with physics.

Science (New York, N.Y.)·2026
Same journal

Retraction.

Science (New York, N.Y.)·2026
Same journal

Making time.

Science (New York, N.Y.)·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jul 29, 2025

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

6.5K

Rejas de cristal de fijación simple

In Chung1,2

  • 1School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea.

Science (New York, N.Y.)
|May 25, 2023
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio introduce una nueva aleación termoeléctrica diseñada para aplicaciones avanzadas de refrigeración electrónica. El material demuestra un alto rendimiento, allanando el camino para soluciones de gestión térmica más eficientes.

Más Videos Relacionados

Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening
14:04

Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening

Published on: January 16, 2021

4.7K
Microcrystallography of Protein Crystals and In Cellulo Diffraction
09:35

Microcrystallography of Protein Crystals and In Cellulo Diffraction

Published on: July 21, 2017

9.1K

Videos de Experimentos Relacionados

Last Updated: Jul 29, 2025

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

6.5K
Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening
14:04

Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening

Published on: January 16, 2021

4.7K
Microcrystallography of Protein Crystals and In Cellulo Diffraction
09:35

Microcrystallography of Protein Crystals and In Cellulo Diffraction

Published on: July 21, 2017

9.1K

Área de la Ciencia:

  • Ciencias de los materiales
  • Física del estado sólido
  • La termodinámica

Sus antecedentes:

  • Los dispositivos electrónicos generan un calor significativo, lo que requiere una gestión térmica eficiente.
  • Los materiales termoeléctricos ofrecen una solución en estado sólido para la disipación del calor.
  • Las aleaciones termoeléctricas actuales se enfrentan a limitaciones en el rendimiento y la eficiencia.

Objetivo del estudio:

  • Desarrollar y caracterizar una nueva aleación termoeléctrica con un rendimiento de refrigeración mejorado.
  • Evaluar el potencial de la aleación para aplicaciones prácticas en sistemas electrónicos de refrigeración.

Principales métodos:

  • Síntesis y procesamiento de la aleación termoeléctrica.
  • Medición de las principales propiedades termoeléctricas (coeficiente de Seebeck, conductividad eléctrica, conductividad térmica).
  • Evaluación del rendimiento en condiciones de refrigeración electrónica simuladas.

Principales resultados:

  • La aleación termoeléctrica desarrollada presenta una alta cifra de mérito (ZT), lo que indica un rendimiento termoeléctrico superior.
  • Logró una capacidad de bombeo de calor significativa, superando a los materiales existentes.
  • Demostró una excelente estabilidad y durabilidad.

Conclusiones:

  • La nueva aleación termoeléctrica representa un avance significativo en los materiales para el enfriamiento electrónico.
  • Este material tiene el potencial de permitir dispositivos electrónicos más compactos, eficientes y confiables.
  • La investigación adicional puede explorar la fabricación a gran escala y la integración en los sistemas de refrigeración.