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Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
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In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
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Caústica dinámica por superficie líquida modulada por ultrasonidos

Koki Nagakura1, Tatsuki Fushimi2,3,4, Ayaka Tsutsui1

  • 1Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, 305-8550, Japan.

Scientific reports
|August 29, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un nuevo método para patrones cáusticos dinámicos utilizando campos holográficos de doble optimización y transductores de matriz de fases (PAT). Esta técnica utiliza ultrasonido para dar forma a las superficies líquidas, creando imágenes cáusticas controlables en tiempo real con un marco Digital Twin.

Palabras clave:
Holografía acústicaEl gemelo digitalLas cáusticas dinámicasManipulación de la superficie del líquidoModulación por ultrasonidos

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Área de la Ciencia:

  • Óptica
  • Acústico
  • Dinámica de fluidos
  • Imágenes computarizadas

Sus antecedentes:

  • La optimización cáustica estática y la manipulación ultrasónica se han explorado anteriormente.
  • Se ha simulado la integración de superficies líquidas como medios refractivos para cáusticos, pero no se ha realizado en la práctica.
  • Los métodos anteriores para cáusticas dinámicas eran limitados en flexibilidad y control en tiempo real.

Objetivo del estudio:

  • Para presentar un nuevo método para generar patrones cáusticos dinámicos utilizando ultrasonido.
  • Demostrar la aplicación práctica de las superficies líquidas como medios refractivos dinámicos para los cáusticos.
  • Aprovechar un marco Digital Twin para la retroalimentación en tiempo real y la optimización de la generación cáustica.

Principales métodos:

  • Utilización de campos holográficos de doble optimización con un transductor de matriz por fases (PAT).
  • Empleando técnicas computacionales para dar forma dinámica a las superficies de fluidos.
  • Implementación de un marco de gemelos digitales para la retroalimentación iterativa y el refinamiento.

Principales resultados:

  • Generación exitosa de patrones cáusticos dinámicos con animaciones controlables en tiempo real.
  • Se ha demostrado la generación de patrones cáusticos complejos de alta frecuencia utilizando superficies líquidas.
  • Logró ajustes precisos y optimización a través del enfoque Digital Twin.

Conclusiones:

  • El método presentado permite la generación flexible y en tiempo real de cáusticas dinámicas utilizando superficies líquidas.
  • El marco Digital Twin mejora la precisión y la calidad de los patrones generados.
  • Las aplicaciones potenciales incluyen pantallas interactivas, instalaciones artísticas y herramientas educativas, a pesar de las limitaciones actuales en contraste y resolución.