High performance THz metasurface sensor based on modified-SWCNTs film for femtomolar protein detection

Zhang, Xiang; Wang, Yue; Luo, Fan; Zhang, Xiaoju; Chen, Xiangdong; Ru, Yumen; Song, Bochen; Cui, Zijian; Zhang, Kuang

doi:10.1016/j.carbon.2024.119273

Carbon

2024

DOI: 10.1016/j.carbon.2024.119273

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High performance THz metasurface sensor based on modified-SWCNTs film for femtomolar protein detection

Xiang Zhang,

Yue Wang,

Fan Luo

et al.

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2024

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Cited by 2 publications

References 59 publications

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Hyperband Synergistic Metadevices

Zhang,

Liu,

et al. 2024

Advanced Optical Materials

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Recent advances in metadevices, featuring complex subwavelength metastructures, have dramatically transformed the control and manipulation of electromagnetic waves. However, the inherently narrow operational bandwidth of these devices, stemming from their wavelength‐specific meta‐atoms, restricts their application in rapidly advancing fields such as the Internet of Things and advanced intelligent systems. Here, a novel hyperband synergistic metadevice is introduced, realized through a comprehensive multi‐scale meta‐atom architecture. The complementary metal‐oxide‐semiconductor (CMOS)‐compatible prototype integrates the distinct properties of double‐walled carbon nanotubes with advanced interlayer and intralayer coupling mechanisms, coherently combining nanoscale, microscale, and macroscale meta‐atoms. This prototype is thus adept at operating across a wide electromagnetic spectrum, spanning from the centimeter‐wavelength microwave band to the hundred nanometer‐wavelength visible and infrared optical band. Significantly, this singular device synergistically delivers three critical functionalities: selective microwave absorption, efficient terahertz beam steering, and enhanced optical transparency. These result signifies a breakthrough in hyperband electromagnetic device engineering, leading to compact, versatile, intelligent electromagnetic platforms.

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Hyperband Synergistic Metadevices

Zhang,

Liu,

et al. 2024

Advanced Optical Materials

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Specific recognition of L-threonine by a terahertz metasurfaces biosensor based on fingerprint peaks

Ma,

Zhang,

et al. 2024

Opt. Express

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Arbitrarily designed resonant-based metasurfaces are particularly attractive and present a unique platform for biosensing applications owing to their ability to confine light to nanoscale regions and their spectral selectivity. In this study, we experimentally demonstrate a metasurface sensor based on terahertz fingerprint spectroscopy that enables the specific recognition of trace samples. The results of simulations and experiments show that this metasurface sensor detects glycine, L-arginine, and L-threonine, respectively, with different resonance coupling. The frequency shift of the resonance peak of the metasurface sensor was the largest when the resonance peak matched the fingerprint peak of the sample, with a maximum of 123 GHz for detecting L-threonine. Therefore, combining the frequency shift of the resonance peaks with the fingerprint spectrum of the sample can achieve specific recognition of the sample. This study provides new ideas for specific recognition of samples using metasurface sensors in biomedicine, food safety, and other fields.

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High performance THz metasurface sensor based on modified-SWCNTs film for femtomolar protein detection

Cited by 2 publications

References 59 publications

Hyperband Synergistic Metadevices

Hyperband Synergistic Metadevices

Specific recognition of L-threonine by a terahertz metasurfaces biosensor based on fingerprint peaks

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