Biological applications of terahertz technology based on nanomaterials and nanostructures

Zhou, Ruiyun; Wang, Chen; Xu, Wendao; Xie, Lijuan

doi:10.1039/c8nr08676a

Cited by 91 publications

(50 citation statements)

References 105 publications

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“…Plasmonic nanoparticles (NPs), such as gold or silver, can function as metamaterial absorbers to improve sensitivity in the terahertz (THz) region. When plasmonic NPs are deposited on the THz plasmonic metamaterials, the localized field of the THz sensing device is improved, which increases the effectivity of the sensor in the THz regime [82]. Plasmonic NPs could also assist in the bonding between sensor surfaces and biomarkers as well as DNAs, RNAs, or proteins.…”

Section: Terahertz Biosensing and Imagingmentioning

confidence: 99%

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

et al. 2020

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Issues related to global energy and environment as well as health crisis are currently some of the greatest challenges faced by humanity, which compel us to develop new pollution-free and sustainable energy sources, as well as next-generation biodiagnostic solutions. Optical functional nanostructures that manipulate and confine light on a nanometer scale have recently emerged as leading candidates for a wide range of applications in solar energy conversion and biosensing. In this review, recent research progress in the development of photonic and plasmonic nanostructures for various applications in solar energy conversion, such as photovoltaics, photothermal conversion, and photocatalysis, is highlighted. Furthermore, the combination of photonic and plasmonic nanostructures for developing high-efficiency solar energy conversion systems is explored and discussed. We also discuss recent applications of photonic–plasmonic-based biosensors in the rapid management of infectious diseases at point-of-care as well as terahertz biosensing and imaging for improving global health. Finally, we discuss the current challenges and future prospects associated with the existing solar energy conversion and biosensing systems.

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Section: Terahertz Biosensing and Imagingmentioning

confidence: 99%

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

et al. 2020

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“…This requires a higher sensitivity of the sensor as the samples being detected becomes more and more microscopic. In order to improve sensitivity or quality factor, many planar structures have been proposed, and some studies have introduced Fano resonance or more complex planar structure [24,25,26,27,28,29]. However, the study of these metamaterial structures is limited by planar structures and it can only introduce electrical or electrical responses, which could increase the dielectric loss and thus decreases its sensing potentials.…”

Section: Introductionmentioning

confidence: 99%

Tunable Dual-Band Ultrasensitive Stereo Metamaterial Terahertz Sensor

Cao

Wang

et al. 2020

IEEE Access

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To overcome the effect of analyte thickness and limitation of single wavelength sensing, we propose an ultra-sensitive stereo metamaterial biosensor with double resonance frequencies based on coupling electric resonance and magnetic resonance. The electromagnetic analysis demonstrates that the double resonance coupling, induced by the structural the stereo double-layer design, can significantly improve sensitive biosensing at the terahertz frequency. The results show that by changing the size of the structure, each resonance frequency can be independently tuned in the range of 0.5-1.8 THz and the maximum refractive index sensitivity is 930.4 GHz/RIU. These results have significant effects on the detection of samples with different frequency points. Our ultra-sensitive stereo metamaterial structure has unparalleled potential and application in biomolecule detection and differentiation.

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“…Biological sensing occurs when a biological response is converted into an electrical signal . In recent years, researchers have designed and fabricated various types of THz bandpass metamaterials that can be used as biosensors .…”

Section: Applications Of Thz Bandpass Metamaterialsmentioning

confidence: 99%

Design, Fabrication, and Modulation of THz Bandpass Metamaterials

Wang

Gao

Raglione

et al. 2019

Laser & Photonics Reviews

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Development of terahertz (THz) sources, detectors, and optical components has been an active area of research across the globe. The interest in THz optoelectronics is driven by the various applications they have enabled, such as ultrawide‐band communication systems, air‐ and space‐borne astronomy, atmospheric monitoring, small‐scale radar, airport security scanners, ultrafast nanodevices, and biomedical imaging and sensing. Here, the aim is to provide a comprehensive review of THz bandpass metamaterials focusing on several areas. First, the design fundamentals and geometrical patterns of THz bandpass metamaterials are summarized. Second, fabrication methods of THz bandpass metamaterials are reviewed, including typical micro‐ and nanofabrication techniques and laser micromachining techniques. More importantly, different engineering methods are reviewed for tuning and modulation of the THz transmission resonance for these metamaterials. Both passive and active modulation methods are included in this discussion; the passive method involves changes in the geometrical pattern of the filter material, and the active method performs in situ modulation of properties by applying an external physical field. Finally, the potential applications and prospects for future research of THz bandpass metamaterials are discussed.

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Biological applications of terahertz technology based on nanomaterials and nanostructures

Abstract: Nanomaterials and nanostructures improve THz biological sensing capabilities by enhancing THz generation and detection performance and offering outstanding detection quality.

Cited by 91 publications

References 105 publications

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

Tunable Dual-Band Ultrasensitive Stereo Metamaterial Terahertz Sensor

Design, Fabrication, and Modulation of THz Bandpass Metamaterials

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