Miniaturized nanohole array based plasmonic sensor for the detection of acetone and ethanol with insights into the kinetics of adsorptive plasmonic sensing

Zhao, Yangyang; Mukherjee, K.; Benkstein, Kurt D.; Sun, Libin; Steffens, Kristen L.; Montgomery, Christopher B.; Guo, Shiqi; Semancik, Steve; Zaghloul, Mona

doi:10.1039/c9nr03578h

Cited by 16 publications

(26 citation statements)

References 46 publications

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“…Another approach would aim to develop a fully miniature system with higher selectivity. To this end, we are continuing to examine the capabilities of the technology to deal with discriminating and tracking multiple biomarkers by utilizing varied surface/interfacial functionalization, features at multiple wavelengths and temperature variations [ 18 ]. Incorporating such methods and specifically designed image analysis algorithms with a camera-based system could result in an inexpensive and highly capable POC device.…”

Section: Discussionmentioning

confidence: 99%

“…Figure 2 b shows a scanning electron microscope (SEM) image of part of the uncoated NHA structure (see also Figure S1c in Supplementary Material ) with diameter and period of the nanoholes equal to 200 nm and 400 nm, respectively. More detailed process steps and characterization of the Cu-BTC MOF layer are provided elsewhere [ 18 , 20 ].…”

Section: Methodsmentioning

confidence: 99%

“…This leads to a local enhancement of the electromagnetic field in proximity to the NHA area that improves the performance of the plasmonic sensing platform. Environmental changes occurring in the vicinity of features in the NHA can also cause measurable changes to the LSPR characteristics [ 18 , 19 , 22 , 23 ]. When performing response studies, gas molecules are adsorbed and released from the MOF layer and produce changes in the MOF layer’s refractive index near the nanohole array.…”

Section: Detection Principlementioning

confidence: 99%

“…The sensing platform consists of a nanohole array (NHA), which is coated with a copper benzenetricarboxylate (Cu-BTC) metal-organic framework (MOF). Our previous work has indicated that such NHAs with a Cu-BTC MOF layer can detect VOCs at nmol/mol levels [ 18 , 19 , 20 ]. When target gas molecules adsorb in the MOF layer, peak wavelength shifts and intensity changes of localized surface plasmon resonance (LSPR) features can be monitored by a spectrometer.…”

Section: Introductionmentioning

confidence: 99%

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Plasmonic Sensing Studies of a Gas-Phase Cystic Fibrosis Marker in Moisture Laden Air

Sun

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Hall

et al. 2021

Sensors

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A plasmonic sensing platform was developed as a noninvasive method to monitor gas-phase biomarkers related to cystic fibrosis (CF). The nanohole array (NHA) sensing platform is based on localized surface plasmon resonance (LSPR) and offers a rapid data acquisition capability. Among the numerous gas-phase biomarkers that can be used to assess the lung health of CF patients, acetaldehyde was selected for this investigation. Previous research with diverse types of sensing platforms, with materials ranging from metal oxides to 2-D materials, detected gas-phase acetaldehyde with the lowest detection limit at the µmol/mol (parts-per-million (ppm)) level. In contrast, this work presents a plasmonic sensing platform that can approach the nmol/mol (parts-per-billion (ppb)) level, which covers the required concentration range needed to monitor the status of lung infection and find pulmonary exacerbations. During the experimental measurements made by a spectrometer and by a smartphone, the sensing examination was initially performed in a dry air background and then with high relative humidity (RH) as an interferent, which is relevant to exhaled breath. At a room temperature of 23.1 °C, the lowest detection limit for the investigated plasmonic sensing platform under dry air and 72% RH conditions are 250 nmol/mol (ppb) and 1000 nmol/mol (ppb), respectively.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Detection Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plasmonic Sensing Studies of a Gas-Phase Cystic Fibrosis Marker in Moisture Laden Air

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et al. 2021

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“…To achieve simple and fast detection, various label-free biosensing technologies [14][15][16][17] have been investigated and demonstrated. Plasmonic sensors or surface plasmon resonance (SPR) sensors are one of the most commonly-used optical sensing devices for real-time monitoring of chemical and biomolecular interactions [18][19][20][21][22][23]. The resonance occurs at an interface between a metal and a dielectric, and is a result of collective electron charge oscillations in the metal coupled to an interfacial electromagnetic wave.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Metasensors Based on 2D Hybrid Atomically Thin Perovskite Nanomaterials

et al. 2020

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In this work, we have designed highly sensitive plasmonic metasensors based on atomically thin perovskite nanomaterials with a detection limit up to 10−10 refractive index units (RIU) for the target sample solutions. More importantly, we have improved phase singularity detection with the Goos–Hänchen (GH) effect. The GH shift is known to be closely related to optical phase signal changes; it is much more sensitive and sharp than the phase signal in the plasmonic condition, while the experimental measurement setup is much more compact than that of the commonly used interferometer scheme to exact the phase signals. Here, we have demonstrated that plasmonic sensitivity can reach a record-high value of 1.2862 × 109 µm/RIU with the optimum configurations for the plasmonic metasensors. The phase singularity-induced GH shift is more than three orders of magnitude larger than those achievable in other metamaterial schemes, including Ag/TiO2 hyperbolic multilayer metamaterials (HMMs), metal–insulator–metal (MIM) multilayer waveguides with plasmon-induced transparency (PIT), and metasurface devices with a large phase gradient. GH sensitivity has been improved by more than 106 times with the atomically thin perovskite metasurfaces (1.2862 × 109 µm/RIU) than those without (918.9167 µm/RIU). The atomically thin perovskite nanomaterials with high absorption rates enable precise tuning of the depth of the plasmonic resonance dip. As such, one can optimize the structure to reach near zero-reflection at the resonance angle and the associated sharp phase singularity, which leads to a strongly enhanced GH lateral shift at the sensor interface. By integrating the 2D perovskite nanolayer into a metasurface structure, a strong localized electric field enhancement can be realized and GH sensitivity was further improved to 1.5458 × 109 µm/RIU. We believe that this enhanced electric field together with the significantly improved GH shift would enable single molecular or even submolecular detection for hard-to-identify chemical and biological markers, including single nucleotide mismatch in the DNA sequence, toxic heavy metal ions, and tumor necrosis factor-α (TNFα).

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Pyramidal Hyperbolic Metasurfaces Enhance Spontaneous Emission of Nitrogen‐Vacancy Centers in Nanodiamond

Zheng

Liang

Arora

et al. 2023

Advanced Optical Materials

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and spin-selective optical transitions of NV centers form the basis of optically detected magnetic resonance and have fostered a plethora of interest in developing quantum biosensing methods, as exemplified by the nanoscale magnetometry [1e,2a] and spinenhanced ultrasensitive diagnostics. [1a-c] Yet, the achievable sensitivity and temporal resolution are compromised by inefficient photon generation and extraction from excited NV centers owing to their long radiative lifetime, which ranges from 10 to 30 ns depending on the size and refractive index of nanodiamonds.Boosting the efficiency of photon generation hinges on accelerating the spontaneous emission of NV centers. [2c,3] For conventional quantum emitters such as semiconductor quantum dots and organic dyes, their transition dynamics can be modified by the Purcell effect, which is linearly dependent on the quality factor but inversely scales with the mode volume of an optical cavity. [3b,c,4] Owing to the high-Q cavity mode of a dielectric resonator and the subwavelength mode volume of a plasmonic nanocavity, they are both well suited to provide a significant Purcell enhancement to accelerate the transition dynamics of quantum emitters, provided that the optical cavity is tuned to be in resonance with the emission spectrum of quantum emitters. However, as an optical cavity usually supports a much narrower spectral linewidth than the broadband emission spectrum of NV centers, it proves less Nitrogen-vacancy (NV) centers in nanodiamond hold great promise for creating superior biological labels and quantum sensing methods. Yet, inefficient photon generation and extraction from excited NV centers restrict the achievable sensitivity and temporal resolution. Herein, an entirely complementary route featuring pyramidal hyperbolic metasurface is reported to modify the spontaneous emission of NV centers. Fabricated using nanosphere lithography, the metasurface consists of alternatively stacked silica-silver thin films configured in a pyramidal fashion, and supports both spectrally broadband Purcell enhancement and spatially extended intense local fields owing to the hyperbolic dispersion and plasmonic coupling. The enhanced photophysical properties are manifested as a simultaneous amplification to the spontaneous decay rate and emission intensity of NV centers. It is envisioned that the reported pyramidal metasurface can serve as a versatile platform for creating chip-based ultrafast single-photon sources and spin-enhanced quantum biosensing strategies, as well as aid in further fundamental understanding of photoexcited species in condensed phases.

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Miniaturized nanohole array based plasmonic sensor for the detection of acetone and ethanol with insights into the kinetics of adsorptive plasmonic sensing

Abstract: MOF-coated NHA plasmonic gas sensor with high sensitivity and temperature-induced analyte discrimination.

Cited by 16 publications

References 46 publications

Plasmonic Sensing Studies of a Gas-Phase Cystic Fibrosis Marker in Moisture Laden Air

Plasmonic Sensing Studies of a Gas-Phase Cystic Fibrosis Marker in Moisture Laden Air

Plasmonic Metasensors Based on 2D Hybrid Atomically Thin Perovskite Nanomaterials

Pyramidal Hyperbolic Metasurfaces Enhance Spontaneous Emission of Nitrogen‐Vacancy Centers in Nanodiamond

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