Low-cost flexible plasmonic nanobump metasurfaces for label-free sensing of serum tumor marker

Zhu, Jinfeng; Wang, Zhengying; Lin, Shaowei; Jiang, Shan; Liu, Xueying; Guo, Shengshi

doi:10.1016/j.bios.2019.111905

Cited by 53 publications

(29 citation statements)

References 41 publications

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“…By controlling the relative phase among the emitters via modifying the geometry of the nanostructures or the polarization state of the incident light, one can achieve unidirectional excitation of SPPs [ 7 , 12 ]. Because of amazing light controlling property, the plasmonic metasurfaces having metallic nanostructures of subwavelength size have been used for many applications in photonics, including bio-sensing [ 16 , 17 ], spectroscopy [ 18 , 19 ], nanolasing [ 20 ], all-optical switching [ 21 ], non-linear optical processes [ 22 ], and metasurface technologies [ 23 – 25 ]. Most of the plasmonic metasurfaces possess subwavelength openings as compared to the wavelengths of incident EM wave, where the transmission is based on the principle of extra-ordinary transmission (EOT) due to excitation of surface plasmons.…”

Section: Introductionmentioning

confidence: 99%

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Verma

Srivastava

2021

Plasmonics

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In the present study, we report giant extra-ordinary transmission of near infrared (NIR) light, more than 90%, through a seemingly opaque plasmonic metasurface, which consists of two metal nano-slits arrays (MNSAs) with alternate opening arrangements. By using perfect coupling of the plasmonic modes formed between the sharp edges of the upper and lower MNSAs of silver, a giant, wavelength selective transmission could be obtained. The study is accompanied by optimization of electromagnetic (EM) field coupling for different interlayer spacings and lateral overlap between the two MNSAs to understand their significance in light transmission through the metasurface. The interlayer spacing between the MNSAs works as the transmitting channel for light. The optimization of performance with different fill factors and plasmonic metals was performed as well. Because of the excitation of extended surface plasmons (ESPs) generated at both the MNSAs, the metasurface can be used for refractive index (RI) sensing as one of its applications by using a transparent and flexible polymer, such as polydimethylsiloxane (PDMS), as substrate. The maximum sensitivity which could be achieved for the optimal configuration of the metasurface was 1435.71 nm/RIU, with a figure of merit (FOM) of 80 RIU −1 for 90.45% optical transmission of light for the refractive index variation of analyte medium from 1.33 to 1.38 RIU. The present study strengthens the concept of light funneling through subwavelength structures due to plasmons, which are responsible for light transmission through this seemingly opaque metasurface and finds use in highly sensitive, flexible, and cost-effective EOT-based sensors.

show abstract

Section: Introductionmentioning

confidence: 99%

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Verma

Srivastava

2021

Plasmonics

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“…To address this problem, various types of strategies have been proposed to enhance the absorption signal of molecules. Among these strategies, plasmonic enhancement is one of the most effective approaches to improve light–molecule interaction in the mid-infrared range [ 8 , 9 , 10 ]. Compared to plasmons in traditional noble metals, graphene is two-dimensional (2D) nanomaterials that have been demonstrated to support localized surface plasmons with considerable field confinement in the infrared region, which offer a new class of platform to realize novel electronic and photonic devices in ultracompact sizes [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Molecular Infrared Spectroscopy Employing Bilayer Graphene Acoustic Plasmon Resonator

Wen

Luo

et al. 2021

Biosensors

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Graphene plasmon resonators with the ability to support plasmonic resonances in the infrared region make them a promising platform for plasmon-enhanced spectroscopy techniques. Here we propose a resonant graphene plasmonic system for infrared spectroscopy sensing that consists of continuous graphene and graphene ribbons separated by a nanometric gap. Such a bilayer graphene resonator can support acoustic graphene plasmons (AGPs) that provide ultraconfined electromagnetic fields and strong field enhancement inside the nano-gap. This allows us to selectively enhance the infrared absorption of protein molecules and precisely resolve the molecular structural information by sweeping graphene Fermi energy. Compared to the conventional graphene plasmonic sensors, the proposed bilayer AGP sensor provides better sensitivity and improvement of molecular vibrational fingerprints of nanoscale analyte samples. Our work provides a novel avenue for enhanced infrared spectroscopy sensing with ultrasmall volumes of molecules.

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“…By controlling the relative phase among the emitters via modifying the geometry of the nanostructures or the polarization state of the incident light, one can achieve unidirectional excitation of SPPs [7,12]. Because of amazing light controlling property, the plasmonic metasurfaces having metallic nanostructures of subwavelength size have been used for many applications in photonics, including bio-sensing [16,17], spectroscopy [18,19], nanolasing [20], all-optical switching [21], nonlinear optical processes [22], and metasurface technologies [23][24][25]. Most of the plasmonic metasurfaces possess subwavelength openings as compared to the wavelengths of incident EM wave, where the transmission is based on the principle of Extra-ordinary transmission (EOT) due to excitation of surface plasmons.…”

Section: Introductionmentioning

confidence: 99%

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Verma

Srivastava

2021

Preprint

View full text Add to dashboard Cite

In the present study, we report giant extra-ordinary transmission of near infra-red (NIR) light, more than 90%, through a seemingly opaque plasmonic metasurface, which consists of two metal nano-slits arrays (MNSAs) with alternate opening arrangements. By using perfect coupling of the plasmonic modes formed between the sharp edges of the upper and lower MNSAs of silver, a giant, wavelength selective transmission could be obtained. The study is accompanied by optimization of electromagnetic (EM) field coupling for different interlayer spacings and lateral overlap between the two MNSAs to understand their significance in light transmission through the metasurface. The interlayer spacing between the MNSAs works as the transmitting channel for light. The optimization of performance with different fill factors and plasmonic metals was performed as well. Because of the excitation of extended surface plasmons (ESPs) generated at both the MNSAs, the metasurface can be used for refractive index (RI) sensing as one of its applications by using a transparent and flexible polymer, such as polydimethylsiloxane (PDMS), as substrate. The maximum sensitivity which could be achieved for the optimal configuration of the metasurface was 1435.71 nm/RIU, with a figure of merit (FOM) of 80 RIU− 1 for 90.45% optical transmission of light for the refractive index variation of analyte medium from 1.33 to 1.38 RIU. The present study strengthens the concept of light funneling through subwavelength structures due to plasmons, which are responsible for light transmission through this seemingly opaque metasurface and finds use in highly sensitive, flexible, and cost effective EOT based sensors.

show abstract

Low-cost flexible plasmonic nanobump metasurfaces for label-free sensing of serum tumor marker

Cited by 53 publications

References 41 publications

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

Enhanced Molecular Infrared Spectroscopy Employing Bilayer Graphene Acoustic Plasmon Resonator

Giant Extra-Ordinary Near Infrared Transmission from Seemingly Opaque Plasmonic Metasurface: Sensing Applications

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