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

The Wave Nature of Light02:12

The Wave Nature of Light

61.6K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.6K
Doppler Effect - I00:56

Doppler Effect - I

6.5K
The Doppler effect and Doppler shift were named after the Austrian physicist and mathematician Christian Johann Doppler in 1842, who conducted experiments with both moving sources and moving observers. Consider an observer standing on a street corner, observing an ambulance with a siren sound passing by at a constant speed. The observer experiences two characteristic changes in the sound of the siren. Initially, the sound increases in loudness as the ambulance approaches and decreases in...
6.5K
Doppler Effect - II01:05

Doppler Effect - II

4.8K
The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
4.8K
Genetic Material01:20

Genetic Material

3.8K
Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.
3.8K
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

414
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
414
Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

622
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
622

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

A Unified Complex-Fresnel Model for Physically Based Long-Wave Infrared Imaging and Simulation.

Journal of imaging·2026
Same author

Dynamic infrared thermography in free flap surgery: A systematic review.

JPRAS open·2026
Same author

Surface Ice Detection Using Hyperspectral Imaging and Machine Learning.

Sensors (Basel, Switzerland)·2025
Same author

Dose-dependent induction of epithelial-mesenchymal transition in 3D melanoma models by non-thermal plasma treatment.

Molecular oncology·2025
Same author

Thermography in Bike Fitting: A Literature Review.

Sensors (Basel, Switzerland)·2025
Same author

On the Measurement of Laser Lines in 3D Space with Uncertainty Estimation.

Sensors (Basel, Switzerland)·2025

Video Experimental Relacionado

Updated: Feb 13, 2026

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography
07:57

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography

Published on: May 10, 2022

2.6K

Caracterización de materiales blandos multicapa utilizando la elastografía de ondas superficiales y la vibrometría

Nasser Ghaderi1, Ali Golmohammadi2, Simon Verspeek1

  • 1University of Antwerp, InViLab Research Group, Faculty of Applied Engineering, Groenenborgerlaan 171, Antwerp, 2020, Belgium.

Journal of biomechanics
|February 11, 2026
PubMed
Resumen

Este estudio introduce un nuevo método que utiliza la elastografía de ondas superficiales para medir las velocidades de las ondas de cizallamiento en materiales tipo piel en capas. La técnica identifica con precisión las anormalidades dentro de las capas de la piel.

Palabras clave:
Modelado de la inversión hacia adelante.El LDV es el LDV.Modelado de la elasticidad de múltiples capas.La velocidad de onda de cizallamiento es la velocidad de onda de cizallamiento.Elastografía de ondas superficiales por ondas de superficie.

Más Videos Relacionados

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
12:18

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Published on: February 9, 2012

12.9K
Laser Doppler Perfusion Imaging in the Mouse Hindlimb
14:45

Laser Doppler Perfusion Imaging in the Mouse Hindlimb

Published on: April 18, 2021

6.7K

Videos de Experimentos Relacionados

Last Updated: Feb 13, 2026

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography
07:57

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography

Published on: May 10, 2022

2.6K
Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
12:18

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Published on: February 9, 2012

12.9K
Laser Doppler Perfusion Imaging in the Mouse Hindlimb
14:45

Laser Doppler Perfusion Imaging in the Mouse Hindlimb

Published on: April 18, 2021

6.7K

Área de la Ciencia:

  • Ingeniería Biomédica Ingeniería Biomédica.
  • Ciencia de los materiales Ciencia de los materiales.
  • La acústica es la acústica.

Sus antecedentes:

  • La caracterización de las propiedades mecánicas de los medios en capas es crucial para comprender la biomecánica de los tejidos.
  • Los métodos no invasivos para evaluar las anomalías de la piel requieren una medición precisa de las velocidades de las ondas de corte.

Objetivo del estudio:

  • Desarrollar y validar una técnica de elastografía de onda de superficie de banda ancha para estimar las velocidades de onda de corte en tejidos blandos multicapa.
  • Para evaluar la precisión del método en la identificación de inclusiones incrustadas que representan anomalías de la piel.

Principales métodos:

  • Utilizó un vibrómetro Doppler láser de barrido (LDV) para medir las ondas superficiales generadas por un transductor piezoeléctrico en un fantasma de tres capas.
  • Modelos extendidos de ondas de Rayleigh para medios multicapa para permitir el modelado hacia adelante y la inversión para la estimación de la velocidad de la onda de cizallamiento.
  • Valida el método con mediciones in vivo en la piel del antebrazo humano.

Principales resultados:

  • El método identificó con precisión una inclusión rígida (error del 1,5%) dentro del fantasma en capas, imitando una anomalía de la piel.
  • Velocidades de onda de corte estimadas para la capa circundante con aproximadamente un 10% de error, influenciadas por efectos viscoelásticos no modelados.
  • Factibilidad demostrada y relevancia clínica a través de mediciones exitosas in vivo en la piel del antebrazo humano.

Conclusiones:

  • La elastografía de onda superficial de banda ancha con LDV es un método sensible y adaptable para caracterizar las propiedades mecánicas de los tejidos de la piel en capas.
  • La técnica es prometedora para diagnosticar anormalidades de la piel y monitorear la respuesta al tratamiento.
  • Un mayor refinamiento puede mejorar la precisión mediante la incorporación de modelos viscoelásticos.