Multifunctional Terahertz Biodetection Enabled by Resonant Metasurfaces

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Testing diverse biomolecules and observing their dynamic interaction in complex biological systems a label-free manner is critically important for terahertz (THz) absorption spectroscopy. However, traditionally employed micro/nanophotonic techniques suffer from narrow operating resonance strong band interference polar solutions preventing seriously reliable, on-demand biosensor integration. Here, multifunctional THz plasmonic biosensing platform by leveraging multiple interfering resonances quasi-bound states the continuum designed to noninvasively situ track temporal evolution of molecules analyte systems, proposed. In contrast conventional microphotonic sensors, this demonstrates substantially broadband performance reduced footprints, allowing simultaneous detection molecular vibrant at spectral points through robust near-field interactions. Furthermore, sensor enables real-time analysis amino acid as water evaporates despite its overlapping bands range. By utilizing format reflectance method acquire comprehensive spectro-temporal data collection, approach supports developing deep neural network discriminate predict composition proportion mixtures, obviating need frequency scanning or microfluidic devices. This offers innovative viewpoints exploring processes provides valuable tools analysis.

Language: Английский

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Pushing Q-factor limit of guided resonances by harnessing topologically protected terahertz bound states in the continuum

Applied Physics Reviews, Journal Year: 2025, Volume and Issue: 12(1)

Published: March 1, 2025

Controlling and enhancing light–matter coupling at subwavelength scales is an essential requirement in the realm of meta-photonics. Recently, all-dielectric metasurfaces (MSs) governed by physics bound states continuum (BICs) have emerged as a standout platform for delivering high-quality (Q) factor resonances near-field electromagnetic hotspots. However, terahertz (THz) domain, experimental validation high-Q BICs with strong robustness advanced maneuverability such photonic systems remains long-standing challenge. Here, we demonstrate simple feasible fabrication approach to unlock full potential BICs-inspired within array silicon cross elliptical resonators. Our results suggest that designed THz-MS can support two symmetry-protected topological charge ±1 several accidental +1 simultaneously. By introducing small perturbations individual resonator, original transform into quasi-BICs bow inverse-square law. Astoundingly, larger symmetry breaking, additional be observed asymmetric THz-MSs surpass typical rule, hence presenting supererogatory degree freedom tailoring on demand. We bear out theoretical findings transmission experiments implemented fabricated samples. observe experimentally ultrasharp dual highest measured Q up 371, level performance was previously unattainable substrate. The mark important step toward enriching family promise exciting opportunities field THz optoelectronic devices metadevices.

Language: Английский

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Multi‐Dimensional Multiplexed Metasurface for Multifunctional Near‐Field Modulation by Physics‐Driven Intelligent Design

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Abstract Metasurface is a revolutionary platform to achieve desired properties by artificially engineering meta‐atom's arrangements. However, the explosively expanding design space of advanced metasurfaces with multiple degrees freedom (MDOF) has made traditional human‐guided methods increasingly ineffective, limiting development metasurfaces. Intelligent have been presented tackle these challenges introducing innovative computational models, but they are predominantly data‐driven and faced issues data scarcity, poor physical interpretability, weak generalization capability. Here, physics‐driven intelligent (PDID) paradigm proposed demonstrates its application MDOF multiplexed The PDID method integrates prior knowledge into deep neural network, thereby enhancing interpretability reducing reliance on extensive databases. Compared designs, this can reduce both time database size two orders magnitude. Through experimental validation metasurfaces, versatility efficiency showed. This not only presents novel tool also exemplifies integration machine learning address challenges. Its interdisciplinary insights offer significant potentials for applications across materials science, information technology.

Language: Английский

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Phase-Controlled Metasurface Design for Full-Stokes Polarization Detector Driven by SPPN

ACS Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

Language: Английский

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Energy Level Splitting in the THz Range of Ce:YAG

Springer proceedings in physics, Journal Year: 2025, Volume and Issue: unknown, P. 361 - 366

Published: Jan. 1, 2025

Language: Английский

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Terahertz Chiral Amplitude Modulator Based on Hybrid Graphene Metasurface

Springer proceedings in physics, Journal Year: 2025, Volume and Issue: unknown, P. 103 - 108

Published: Jan. 1, 2025

Language: Английский

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Progress in Applied Research on Terahertz Bioeffect

Springer proceedings in physics, Journal Year: 2025, Volume and Issue: unknown, P. 51 - 56

Published: Jan. 1, 2025

Language: Английский

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Impact of DNA Sequence Variability on the Hydration Shell Water Spectrum

Springer proceedings in physics, Journal Year: 2025, Volume and Issue: unknown, P. 244 - 250

Published: Jan. 1, 2025

Language: Английский

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Existence of Terahertz Fields in the Visual Nervous System

Springer proceedings in physics, Journal Year: 2025, Volume and Issue: unknown, P. 342 - 346

Published: Jan. 1, 2025

Language: Английский

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Effects of Oxygen Deficiency on the Optical Properties of YBa₂Cu₃O₇

Springer proceedings in physics, Journal Year: 2025, Volume and Issue: unknown, P. 278 - 284

Published: Jan. 1, 2025

Language: Английский

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