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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Updated: Jan 23, 2026

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Un MOF de tierras raras inteligente

Hongjun Li1, Qianghui Dong1, Jianwei Guo1

  • 1Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang, China.

Advanced materials (Deerfield Beach, Fla.)
|January 22, 2026
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Resumen

Los investigadores desarrollaron centelleadores inteligentes multirrespuesta a estímulos (SMRS) utilizando marcos organometálicos de tierras raras (RE-MOF). Estos materiales ofrecen capacidades de percepción avanzadas para diversas aplicaciones optoelectrónicas.

Palabras clave:
centelleador de rayos Xmarcos organometálicosmaterial luminiscente de tierras raraspercepción inteligentematerial sensible a estímulos

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Área de la Ciencia:

  • Ciencia de Materiales; Optoelectrónica; Nanotecnología

Sus antecedentes:

  • Los materiales luminiscentes inteligentes son cruciales para la optoelectrónica, pero enfrentan limitaciones como la respuesta única y la pobre adaptabilidad.; Los materiales existentes a menudo carecen de cobertura espectral integral y robustez ambiental, lo que dificulta aplicaciones más amplias.

Objetivo del estudio:

  • Presentar el concepto de centelleadores inteligentes multirrespuesta a estímulos (SMRS).; Fabricar novedosos marcos organometálicos de tierras raras (RE-MOF) con percepción activa y pasiva.; Explorar su potencial en sistemas avanzados de percepción inteligente.

Principales métodos:

  • Fabricación de marcos organometálicos de tierras raras (RE-MOF).; Caracterización del rendimiento de centelleo, incluido el rendimiento de luz y los límites de detección.; Investigación de las respuestas de luminiscencia a estímulos UV, de rayos X y térmicos.

Principales resultados:

  • Los RE-MOF exhiben un alto rendimiento de luz relativa (máximo 42 200 fotones MeV-1) y un límite de detección de baja tasa de dosis (mínimo 128,2 nGyaire s-1).; La luminiscencia sintonizable de banda ancha lograda mediante la modulación del contenido de RE3+ permite la percepción pasiva.; Contrastes espectrales distintos bajo luz UV y de rayos X, y luminiscencia sensible a estímulos térmicos demuestran la percepción activa.

Conclusiones:

  • Los RE-MOF desarrollados funcionan como SMRS efectivos con capacidades de percepción tanto activa como pasiva.; Estos materiales muestran un potencial significativo para imágenes ópticas in situ y códigos de barras fotónicos de alta seguridad.; Este trabajo establece una nueva dirección para los centelleadores basados en MOF en sistemas de percepción inteligente.