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Terahertz reconfigurable intelligent surfaces (RIS) stand out from conventional phased arrays thanks to their unique electromagnetic properties and intelligent interconnect paradigms. They are a vital technology for terahertz wireless communication and radar detection systems. Compared with 1-bit coding metasurfaces, 2-bit coding metasurfaces offer significant advantages such as single beam steering and reduced quantization errors.
View Article and Find Full Text PDFTerahertz modulation technology based on programmable metasurfaces can respond in real time to external signals or environmental changes, enabling flexible and adaptive control of terahertz waves. This technology demonstrates significant potential and importance across various fields, including communication, imaging, scientific research, security monitoring, and industrial applications. This paper proposes a terahertz programmable metasurface based on solid-state plasma, utilizing solid-state plasma devices to achieve dynamic control of properties such as the amplitude and phase of terahertz waves.
View Article and Find Full Text PDFWe propose a conformal vision transformer (CViT)-based demodulation for the perfect optical vortices shift keying (POV-SK) signal in the low-density parity check (LDPC) coded free-space optical (FSO) link. Despite the growing interest in POV for FSO links, atmospheric turbulence (AT) induces phase distortions, resulting in POV-SK demodulation errors and degrading POV-SK FSO communication performance. The CViT demodulator utilizes conformal mapping to reshape the circular POV-SK patterns into rectangles, enabling more efficient feature learning.
View Article and Find Full Text PDFNeuropilin1-dependent paracrine signaling of cancer cells mediated by miRNA exosomal cargo.
Cell Commun Signal
January 2025
Dipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy.
Background: Neuropilin-1 (NRP1) is a transmembrane protein involved in surface receptor complexes for a variety of extracellular signals. NRP1 expression in human cancers is associated with prominent angiogenesis and advanced progression stage. However, the molecular mechanisms underlying NRP1 activity in the tumor microenvironment remain unclear.
View Article and Find Full Text PDFPolymer-Layered Optical Wearable (PLOW) for Healthcare Applications: Temperature and Stretching Monitoring.
ACS Appl Mater Interfaces
January 2025
Nanophotonics and Plasmonics Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, Odisha 752050, India.
Thermal and stretching characteristics are crucial variables in healthcare, robotics, and human-machine interaction applications. Here, we present a single-mode fiber-based, balloon-shaped, single- and dual polymer-layered optical wearable (PLOW) system that can sense both temperature and stretching. These two types of PLOWs are compared in terms of their detection performance across all criteria.
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