Terahertz Metamaterials Inspired by Quantum Phenomena DOI Creative Commons
Ziheng Ren,

Yuze Hu,

Weibao He

et al.

Research, Journal Year: 2025, Volume and Issue: 8

Published: Jan. 1, 2025

The study of many phenomena in the terahertz (THz) frequency spectral range has emerged as a promising playground modern science and technology, with extensive applications high-speed communication, imaging, sensing, biosensing. Many THz metamaterial designs explore quantum physics embedded into classical framework exhibiting various unexpected behaviors. For spatial waves, effects inspired by include electromagnetically induced transparency (EIT), Fano resonance, bound states continuum (BICs), exceptional points (EPs) non-Hermitian systems. They facilitate realization functional metadevices applications. on-chip physics-inspired topological metamaterials, photonic analogs insulators, can ensure robust, low-loss propagation suppressed backscattering. These trends open new pathways for data transmission integrated circuits, being crucial upcoming 6G 7G wireless communication technologies. Here, we summarize underlying principles metamaterials highlight latest advances their application band, encompassing both metadevice realizations.

Language: Английский

Advanced Terahertz Refractive Sensing And Fingerprint Recognition Through Metasurface‐Excited Surface Waves DOI

Zeyan Zhang,

Zhuo Wang, Chao Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(14)

Published: Jan. 5, 2024

High-sensitive metasurface-based sensors are essential for effective substance detection and insightful bio-interaction studies, which compress light in subwavelength volumes to enhance light-matter interactions. However, current methods improve sensing performance always focus on optimizing near-field response of individual meta-atom, fingerprint recognition bio-substances necessitates several pixelated metasurfaces establish a quasi-continuous spectrum. Here, novel strategy is proposed achieve Terahertz (THz) refractive sensing, based surface waves (SWs). Leveraging the long-range transmission, strong confinement, interface sensitivity SWs, metasurface-supporting SWs excitation propagation experimentally verified integrations. Through wide-band information collection sensor not only facilitates up 215.5°/RIU, but also enables simultaneous resolution multiple within continuous By covering 5 µm thickness polyimide, quartz silicon nitride layers, maximum phase change 91.1°, 101.8°, 126.4° obtained THz band, respectively. Thus, this broadens research scope metasurface-excited introduces paradigm ultrasensitive functions.

Language: Английский

Citations

93
Intelligent metasurface system for automatic tracking of moving targets and wireless communications based on computer vision DOI Creative Commons
Weihan Li, Qian Ma, Che Liu

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Feb. 22, 2023

Abstract The fifth-generation (5G) wireless communication has an urgent need for target tracking. Digital programmable metasurface (DPM) may offer intelligent and efficient solution owing to its powerful flexible controls of electromagnetic waves advantages lower cost, less complexity smaller size than the traditional antenna array. Here, we report system perform tracking communications, in which computer vision integrated with a convolutional neural network (CNN) is used automatically detect locations moving targets, dual-polarized DPM pre-trained artificial (ANN) serves realize smart beam communications. Three groups experiments are conducted demonstrating system: detection identification radio-frequency signals, real-time proposed method sets stage implementation identification, radio environment tracking, This strategy opens up avenue networks self-adaptive systems.

Language: Английский

Citations

76
High-frequency terahertz waves disrupt Alzheimer’s β-amyloid fibril formation DOI Creative Commons
Wenyu Peng, Zhi Zhu,

Jing Lou

et al.

eLight, Journal Year: 2023, Volume and Issue: 3(1)

Published: Aug. 1, 2023

Abstract The accumulation and deposition of amyloid can cause a variety neurodegenerative diseases, including Alzheimer’s Parkinson’s disease. degradation or clearance this is currently the most widely accepted therapeutic strategy for intervention in these pathologies. Our study on amyloid-β (Aβ) oligomers vitro revealed that high-frequency terahertz (THz) waves at specific frequency 34.88 THz could serve as physical, efficient, non-thermal denaturation technique to delay fibrotic process by 80%, monitored thioflavine T (ThT) binding assay Fourier transform infrared (FTIR) spectroscopy. Additionally, have been shown no side effects normal cells, confirmed cell viability mitochondrial membrane potential assays. Furthermore, molecular dynamic (MD) simulations resonate with Aβ fibrils, disrupting dense conformation breaking β-sheet structure promoting formation abundant coil bend structures. This uses an example, results will further guide interventions other amyloids, which may provide new ideas remission related diseases.

Language: Английский

Citations

60
Real-time programmable metasurface for terahertz multifunctional wave front engineering DOI Creative Commons
Feng Lan, Luyang Wang, Hongxin Zeng

et al.

Light Science & Applications, Journal Year: 2023, Volume and Issue: 12(1)

Published: Aug. 7, 2023

Abstract Terahertz (THz) technologies have become a focus of research in recent years due to their prominent role envisioned future communication and sensing systems. One the key challenges facing field is need for tools enable agile engineering THz wave fronts. Here, we describe reconfigurable metasurface based on GaN technology with an array-of-subarrays architecture. This subwavelength-spaced array, under control 1-bit digital coding sequence, can switch between enormous range possible configurations, providing facile access nearly arbitrary front signals near 0.34 THz. We demonstrate wide-angle beam scanning 1° angular precision over 70 GHz bandwidth, as well generation multi-beam diffuse fronts, switching speed up 100 MHz. device, offering ability rapidly reconfigure propagating beam-forming or diffusively scattered coverage scene, will open new realms possibilities sensing, imaging, networking.

Language: Английский

Citations

58
An ultra-sensitive metasurface biosensor for instant cancer detection based on terahertz spectra DOI
Peiliang Wang,

Jing Lou,

Yun Yu

et al.

Nano Research, Journal Year: 2023, Volume and Issue: 16(5), P. 7304 - 7311

Published: Feb. 8, 2023

Language: Английский

Citations

57
Terahertz Photons Inhibit Cancer Cells Long Term by Suppressing Nano Telomerase Activity DOI

Junkai Yin,

Kaijie Wu, Yun Yu

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(6), P. 4796 - 4810

Published: Jan. 23, 2024

Telomeres are nanoscale DNA–protein complexes to protect and stabilize chromosomes. The reexpression of telomerase in cancer cells is a key determinant crucial for the infinite proliferation long-term survival most cells. However, use inhibitors treatment may cause problems such as poor specificity, drug resistance, cytotoxicity. Here, we discovered nondrug noninvasive terahertz modulation strategy capable suppression by inhibiting activity. First, found that an optimized frequency 33 THz photon irradiation effectively inhibited activity molecular dynamics simulation filtering experiments. Moreover, vitro experiments showed 4T1 MCF-7 significantly decreased 77% 80% respectively, after 21 days regular irradiation. Furthermore, two kinds were undergo aging, apoptosis, DNA double-strand breaks caused telomere crisis, which seriously affected In addition, tumorigenicity irradiated with waves vivo mice 70%. summary, this study demonstrates potential application nano therapy cancer.

Language: Английский

Citations

49
Metasurface-Assisted Terahertz Sensing DOI Creative Commons
Qian Wang,

Yuzi Chen,

Jinxian Mao

et al.

Sensors, Journal Year: 2023, Volume and Issue: 23(13), P. 5902 - 5902

Published: June 25, 2023

Terahertz (THz) waves, which fall between microwaves and infrared bands, possess intriguing electromagnetic properties of non-ionizing radiation, low photon energy, being highly sensitive to weak resonances, non-polar material penetrability. Therefore, THz waves are extremely suitable for sensing detecting chemical, pharmaceutical, biological molecules. However, the relatively long wavelength (30~3000 μm) compared size analytes (1~100 nm biomolecules, <10 μm microorganisms) constrains development THz-based sensors. To circumvent this problem, metasurface technology, by engineering subwavelength periodic resonators, has gained a great deal attention enhance resonance response waves. Those metasurface-based sensors exhibit high sensitivity label-free sensing, making them appealing variety applications in security, medical applications, detection. The performance is controlled geometric structure parameters. operating mechanism divided into two main categories, passive active. have profound understanding these metasurface-assisted technologies, we review categorize those sensors, based on their mechanisms, including resonators frequency shift nanogaps enhanced field confinement, chirality handedness detection, active elements (such as graphene MEMS) advanced tunable sensing. This comprehensive can serve guideline future metasurfaces design assist

Language: Английский

Citations

46
Ultra-wideband terahertz fingerprint enhancement sensing and inversion model supported by single-pixel reconfigurable graphene metasurface DOI Creative Commons

Bingwei Liu,

Yan Peng,

YuFan Hao

et al.

PhotoniX, Journal Year: 2024, Volume and Issue: 5(1)

Published: April 15, 2024

Abstract The molecular fingerprint sensing technology based on metasurface has unique attraction in the biomedical field. However, terahertz (THz) band, existing designs multi-pixel or angle multiplexing usually require more analyte amount possess a narrower tuning bandwidth. Here, we propose novel single-pixel graphene metasurface. Based synchronous voltage tuning, this enables ultra-wideband ( $$\sim$$ ∼ 1.5 THz) enhancement of trace analytes, including chiral optical isomers, with limit detection (LoD) ≤ 0.64 μg/mm 2 . signal 17.4 dB) originates from electromagnetically induced transparency (EIT) effect excited by metasurface, and ideal overlap between light field constrained single-layer (SLG) ultra-thin analyte. Meanwhile, due to nonlinear mechanism absorption envelope distortion is inevitable. To solve problem, universal spectrum inversion model developed for first time, restoration standard fingerprints reaches R max ≥ 0.99. In addition, asynchronous provides an opportunity realizing dynamic reconfiguration EIT resonance slow modulation broadband range. This work builds bridge THz potential applications active spatial modulators, devices imaging equipments.

Language: Английский

Citations

43
Tunable dual-broadband terahertz absorber based on vanadium dioxide stacked with multilayer structures DOI
Zhen Cui, Nan Liu,

Yize Zhang

et al.

Optics Communications, Journal Year: 2024, Volume and Issue: 570, P. 130874 - 130874

Published: July 14, 2024

Language: Английский

Citations

22
Quadruple-band synglisis enables high thermoelectric efficiency in earth-abundant tin sulfide crystals DOI

Shan Liu,

Shulin Bai, Yi Wen

et al.

Science, Journal Year: 2025, Volume and Issue: 387(6730), P. 202 - 208

Published: Jan. 9, 2025

Thermoelectrics have been limited by the scarcity of their constituent elements, especially telluride. The earth-abundant, wide-bandgap ( E g ≈ 46 k B T ) tin sulfide (SnS) has shown promising performance in its crystal form. We improved thermoelectric efficiency SnS crystals promoting convergence energy and momentum four valance bands, termed quadruple-band synglisis. introduced more Sn vacancies to activate synglisis facilitate carrier transport inducing 2 selenium (Se)–alloyed SnS, leading a high dimensionless figure merit ZT ~1.0 at 300 kelvin an average ~1.3 773 p-type crystals. further obtained experimental ~6.5%, our fabricated cooler demonstrated maximum cooling temperature difference ~48.4 353 kelvin. Our observations should draw interest earth-abundant for applications waste-heat recovery cooling.

Language: Английский

Citations

11