Extensible on-chip mode manipulations based on metamaterials

Zhang, Xuanru; Cui, Tiejun

doi:10.1038/s41377-022-00901-w

Cited by 5 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, designing high-Q resonances narrower than molecular vibrational bands enables monochromatic SEIRA sensing of specific target analytes without the need for an infrared spectrometer [ 51 , 85 , 102 ]. Common dielectric materials currently used include Silicon (Si) [ 102 ], Germanium (Ge) [ 51 , 85 ], Gallium Phosphide (GaP) [ 104 ], Indium Phosphide (InP) [ 105 ], and others ( Figure 2 b). These materials possess high refractive indices, low losses, and excellent optical properties, making them widely applicable choices in the fields of spectroscopy and nanophotonics.…”

Section: Resonator Materialsmentioning

confidence: 99%

Research Progress in Surface-Enhanced Infrared Absorption Spectroscopy: From Performance Optimization, Sensing Applications, to System Integration

Li,

Xu,

Xie

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

Infrared absorption spectroscopy is an effective tool for the detection and identification of molecules. However, its application is limited by the low infrared absorption cross-section of the molecule, resulting in low sensitivity and a poor signal-to-noise ratio. Surface-Enhanced Infrared Absorption (SEIRA) spectroscopy is a breakthrough technique that exploits the field-enhancing properties of periodic nanostructures to amplify the vibrational signals of trace molecules. The fascinating properties of SEIRA technology have aroused great interest, driving diverse sensing applications. In this review, we first discuss three ways for SEIRA performance optimization, including material selection, sensitivity enhancement, and bandwidth improvement. Subsequently, we discuss the potential applications of SEIRA technology in fields such as biomedicine and environmental monitoring. In recent years, we have ushered in a new era characterized by the Internet of Things, sensor networks, and wearable devices. These new demands spurred the pursuit of miniaturized and consolidated infrared spectroscopy systems and chips. In addition, the rise of machine learning has injected new vitality into SEIRA, bringing smart device design and data analysis to the foreground. The final section of this review explores the anticipated trajectory that SEIRA technology might take, highlighting future trends and possibilities.

show abstract

Section: Resonator Materialsmentioning

confidence: 99%

Research Progress in Surface-Enhanced Infrared Absorption Spectroscopy: From Performance Optimization, Sensing Applications, to System Integration

Li,

Xu,

Xie

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…As a result, it is crucial for us to explore the advancements in electromagnetic absorbing materials that can provide excellent performance in mitigating these risks. In order to accomplish this, it is essential to concentrate on developing suitable components and microstructures. − These specific materials hold promise in serving as radar-absorbing substances, particularly within the domain of stealth technology. Ideal absorption materials should possess certain characteristics in order to meet the demands of practical applications.…”

Section: Introductionmentioning

confidence: 99%

Flexible PVA/Co Ferrite/MWCNT/AC Metacomposites: High Conductivity and Low Percolation Threshold

Gholipur,

Afrouzeh

2024

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

Recently, metacomposites have emerged as a promising solution for electromagnetic wave absorption due to their extraordinary electromagnetic parameters. However, the underlying paradigm and regulation mechanism for the negative and near-zero responses of real permittivity are still not clearly understood. To address this gap, this study focuses on the development of metacomposites comprising poly(vinyl alcohol) (PVA), Co ferrite, multiwalled carbon nanotubes (MWCNT), and activated carbon (AC) using a cost-effective sol−gel method based on percolation theory. An in-depth analysis of the materials revealed that the combination of a porous structure and magnetic nanoparticles in the carbon matrix had a synergetic effect. This synergistic effect resulted in a remarkable improvement in the impedance matching conditions and attenuation ability of the metacomposites. Interestingly, as the frequency increased, the value of the real permittivity switched from positive to negative in PVA/Co ferrite/MWCNT/AC metacomposites. This phenomenon can be explained by the electrical dipole resonance of the interconnected MWCNTs. As a result, the metacomposites displayed excellent electromagnetic wave absorption performance, with the electromagnetic absorption capacity significantly enhanced to −28.1095 dB for a thickness of 1 mm. Such a high level of reflection loss (RL) indicates that these metacomposites have the capability to attenuate all incoming electromagnetic radiation. Consequently, these metacomposites hold great potential for various modern devices that require highly efficient, stable, adjustable, and lightweight absorption capabilities such as memristors, light-dependent resistances, and low-frequency reflectors.

show abstract

Carbon nanotube-carbon black/CaCu3Ti4O12 ternary metacomposites with tunable negative permittivity and thermal conductivity fabricated by spark plasma sintering

Qu,

Wu,

Xie

et al. 2023

Rare Met.

View full text Add to dashboard Cite

Extensible on-chip mode manipulations based on metamaterials

Cited by 5 publications

References 12 publications

Research Progress in Surface-Enhanced Infrared Absorption Spectroscopy: From Performance Optimization, Sensing Applications, to System Integration

Research Progress in Surface-Enhanced Infrared Absorption Spectroscopy: From Performance Optimization, Sensing Applications, to System Integration

Flexible PVA/Co Ferrite/MWCNT/AC Metacomposites: High Conductivity and Low Percolation Threshold

Carbon nanotube-carbon black/CaCu3Ti4O12 ternary metacomposites with tunable negative permittivity and thermal conductivity fabricated by spark plasma sintering

Contact Info

Product

Resources

About