Video Experimental Relacionado
Updated: Jan 19, 2026
08:14
Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
Published on: April 20, 2015
18.3K
Dirección de luz topológica no hermética
Han Zhao1, Xingdu Qiao2, Tianwei Wu2
1Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
Science (New York, N.Y.)
|September 14, 2019
Resumen
Los investigadores demuestran una dirección de luz robusta en aislantes topológicos fotónicos reconfigurables mediante la interfaz de la física no hermética y topológica. Esto permite el control dinámico de las vías de luz para la transmisión de datos de alta densidad.
Área de la Ciencia:
- La fotónica
- Física topológica
- Física no hermética
Sus antecedentes:
- Los aislantes topológicos fotónicos ofrecen un transporte de luz inmune al desorden, crucial para los dispositivos fotónicos avanzados.
- La reconfiguración flexible de las vías de luz es esencial para el enrutamiento de alta densidad y para satisfacer las demandas de capacidad de datos.
Objetivo del estudio:
- Para demostrar una dirección ligera arbitraria y robusta en uniones no herméticas reconfigurables.
- Para permitir el control dinámico de las trayectorias topológicas de la luz dentro de los aislantes topológicos fotónicos.
Principales métodos:
- Interfaz entre la física no hermética y la topológica.
- Utilizando uniones no herméticas reconfigurables con dominios de ganancia y pérdida.
- Guiando los estados topológicos quirales en las interfaces de dominio.
Principales resultados:
- Ha conseguido una dirección ligera arbitraria y robusta.
- Se ha demostrado la propagación de estados topológicos quirales en la interfaz de ganancia-pérdida.
- Habilitado el control dinámico de enlaces de transmisión de luz robustos dentro del bulto.
Conclusiones:
- Los estados topológicos desarrollados no controlados por Hermitian permiten la plena utilización de huellas de aislantes topológicos fotónicos.
- Este enfoque facilita la reconfiguración flexible de las trayectorias de luz topológicas para aplicaciones prácticas en el enrutamiento fotónico.
Videos de Conceptos Relacionados
05:03Assessing Immunological Synapse Topology through Live-Cell Imaging
525
This video demonstrates live-cell imaging of immunological synapse topology, investigating the interactions between T lymphocytes and epithelial cells carrying fluorescent antigens. Fluorescence microscopy reveals red cytoplasm displacement and yellow membrane rings in endothelial cells, indicating the formation of immunological...
525
08:14Determining Membrane Protein Topology Using Fluorescence Protease Protection (FPP)
18.3K
Here, we present a protocol to determine the orientation and topology of integral membrane proteins in living cells. This simple protocol relies on selective protease sensitivity of chimeras between the protein of interest and GFP.
18.3K
02:16Light Acquisition
9.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.4K
01:35Light as Energy
95.3K
The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
95.3K
02:12The Wave Nature of Light
60.8K
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.
60.8K
02:00Photoreceptors and Plant Responses to Light
28.3K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
28.3K