Metallic photonic crystal-based sensor for cryogenic environments

Palinski, Timothy J.; Hunter, Gary W.; Tadimety, Amogha; Zhang, John X. J.

doi:10.1364/oe.27.016344

Cited by 8 publications

(4 citation statements)

References 39 publications

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“…Thus, intensity‐based sensing using a photodetector highlights the advantage of the plasmon‐photon coupling under TM configuration. Au grating/ITO waveguide‐based 1D mPhCs have been investigated as lab‐on‐chip biosensors in cryogenic environments [ 302 ] (300 to 180 K), as shown in Figure 7B‐i. For a fixed period, different mPhCs with varied metallic grating widths, formed using EBL and lift‐off (Figure 7B‐ii) on ITO waveguides, show that wider grating widths exhibit more sensitivity to the local environment.…”

Section: Sensing Performance Overview For Hybridized Plasmonic Sensorsmentioning

confidence: 99%

“…B‐i–iii) Reproduced under the terms of the Creative Commons CC‐BY license. [ 302 ] Copyright 2019, the authors, published by Optica. C‐i) Isopropanol vapor sensing using plasmonic Al nanocylinder array embedded in a mesoporous silica layer.…”

Section: Sensing Performance Overview For Hybridized Plasmonic Sensorsmentioning

confidence: 99%

“…(i) Schematic of the mPhCs, (ii) SEM image of the fabricated mPhCs, (iii) reflectance measurements for sensitivity calculations. B-i-iii) Reproduced under the terms of the Creative Commons CC-BY license [302]. Copyright 2019, the authors, published by Optica.…”

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confidence: 99%

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Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Sarkar,

König

2023

Advanced Sensor Research

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The requirements for an optical sensor are high: the sensor should be reliable, quick, and simple, and all these features must be provided at ultralow fabrication costs. The requirements go even further, as the sensor may operate without an energy source, and nowadays, the sensor components should be recyclable. Today existing plasmonic concepts and advances in nanofabrication can meet these requirements. This review article describes the available nanoscale components and discusses their reasonable layout to obtain the sensing requirements. It is shown that combining photonic and plasmonic properties helps to get high sensitivity at low losses, where these hybrid modes with simple optical concepts are introduced. The current state of the art in developing lithographic nanostructuring and directed self‐assembly to pave the way for future refractive index sensors is also used. By providing a guideline for advanced sensors, how the individual optical components can be used to create hybrid properties that can be realized cost‐effectively are shown. The review article ends with a discussion on the perspectivs for plasmonic hybridization sensors.

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Section: Sensing Performance Overview For Hybridized Plasmonic Sensorsmentioning

confidence: 99%

Section: Sensing Performance Overview For Hybridized Plasmonic Sensorsmentioning

confidence: 99%

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Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Sarkar,

König

2023

Advanced Sensor Research

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“…Plasmonic 1D gratings play a crucial role in device formation for many applications in the fields of sensing, [23] polarizing spectral filtering, [24] structural color filtering, [25] bandgap tuning, [26] beam steering, [27] and others. Since the grating can be considered as an ensemble of individual nanobars, the resonant wavelength for the plasmonic grating undergoes redshift compared to that of a single nanobar; thus, a change from evanescent to radiative diffraction modes results in broader plasmonic linewidths.…”

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confidence: 99%

Plasmonic Photoresistor Based on Interconnected Metal‐Semiconductor Grating

Ghosh

Sarkar

Tsuda

et al. 2023

Adv Funct Materials

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Metal‐semiconductor nanostructures in various configurations are extensively used in photodetection, photocatalysis, and photovoltaics. For photodetection purposes, the working principle is straightforward; on illumination, generated charge carriers in excess lead to a decrease in resistance. Notably, using an interconnected metal‐semiconductor grating, it is observed and now reported an opposite response, an increase in the resistance. Such photoresistors are fabricated through wrinkle structuring and oblique angle material deposition methods. It is found that the controlled wrinkling leads to large‐area 1D periodic structures with coexisting cracking perpendicular to the grating direction—such cracks are used as connections between the two‐point contact measurement through the associated gold layer deposition. An enhanced current reduction is further observed on photoexcitation for an additional deposition of an amorphous titania layer. Subsequently, a discussion on the mechanisms and interaction between hot electron injection, charge carrier recombination, and thermalization is presented. Supported by numerical modeling, the angle‐resolved plasmonic modes with the photoresistance can be correlated. The ease of layered deposition of the materials allows one to extend the studies on cavity‐based structures with sandwiched titania layers as hotspots. This simple, scalable, and robust fabrication method thus promises an efficient routeway toward photosensor development in which plasmon‐mediated hot electrons play a crucial role.

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Reinforcement of optical wave transmission by using two cap-layers in a multilayer structure containing nano-scale blocks

Rahimi

2022

Opt Quant Electron

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Metallic photonic crystal-based sensor for cryogenic environments

Cited by 8 publications

References 39 publications

Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Engineering Plasmonic Hybridization toward Advanced Optical Sensors

Plasmonic Photoresistor Based on Interconnected Metal‐Semiconductor Grating

Reinforcement of optical wave transmission by using two cap-layers in a multilayer structure containing nano-scale blocks

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