Surface Plasmon Resonance: Material and Interface Design for Universal Accessibility

Hinman, Samuel S.; McKeating, Kristy S.; Cheng, Quan

doi:10.1021/acs.analchem.7b04251

Cited by 121 publications

(64 citation statements)

References 225 publications

(440 reference statements)

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“…The basis of SPR is the surface plasmon polariton (SPP), which propagates along a planar, nanoscale gold surface in resonance with an incident light source of matching angular frequency. 19,20 High refractive index prisms are typically used to increase the momentum of incident light and fulfill the resonant matching conditions, and must be smooth enough to allow SPP propagation parallel to the surface. Gold films (50 nm) were evaporated onto one face of the 3D printed prisms in the Kretschmann configuration, and their reflectivity images are provided in Figure 2A, with the microchannel flow cell used throughout these experiments clearly defined.…”

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confidence: 99%

Plasmonic Sensing with 3D Printed Optics

2017

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Three-dimensional (3D) printing has undergone an exponential growth in popularity due to its revolutionary and near limitless manufacturing capabilities. Recent trends have seen this technology utilized across a variety of scientific disciplines, including the measurement sciences, but precise fabrication of optical components for high-performance biosensing has not yet been demonstrated. We report here 3D printing of high-quality, custom prisms by stereolithography that enable Kretschmann-configured plasmonic sensing of bacterial toxins. Simple benchtop polishing procedures render a smooth surface that supports propagation of surface plasmon polaritons with a deposited gold layer, which exhibit high bulk refractive index sensitivities and are capable of discriminating trace levels of cholera toxin on a supported lipid membrane interface. Further evidence of the flexibility of this manufacturing technique is demonstrated with printed prisms of varied geometries and in situ monitoring of nanoparticle growth by total internal reflection spectroscopy. This work represents the first example of 3D printed light-guiding sensing platforms and demonstrates the versatility and broad perspective of 3D printing in optical detection.

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confidence: 99%

Plasmonic Sensing with 3D Printed Optics

2017

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“…Surface plasmon resonance, the collective resonant oscillation of electrons at the interface of metal and dielectric in response to excitation light, has been exploited in different sensing applications (Csáki et al, 2018 ; Hinman et al, 2018 ; Lertvachirapaiboon et al, 2018 ). The maximum absorption of energy from incident light will be occurred in a specific wavelength which is strictly dependent to the dielectric properties of interface.…”

Section: Introductionmentioning

confidence: 99%

Recording Neural Activity Based on Surface Plasmon Resonance by Optical Fibers-A Computational Analysis

Abedini

Tekieh

Sasanpour

2018

Front. Comput. Neurosci.

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An all optical, non-destructive method for monitoring neural activity has been proposed and its performance in detection has been analyzed computationally. The proposed method is based on excitation of Surface Plasmon Resonance (SPR) through the structure of optical fibers. The sensor structure consists of a multimode optical fiber where, the cladding of fiber has been removed and thin film of gold structure has been deposited on the surface. Impinging the laser light with appropriate wavelength inside the fiber and based on the total internal reflection, the evanescent wave will excite surface plasmons in the gold thin film. The absorption of light by surface plasmons in the gold structure is severely dependent on the dielectric properties at its vicinity. The electrical activity of neural cells (action potential) can modulate the dielectric properties at its vicinity and hence can modify the absorption of light inside the optical fiber. We have computationally analyzed the performance of the proposed sensor with different available geometries using Finite Element Method (FEM). In this regard, we have shown that the optical response of proposed sensor will track the action potential of the neuron at its vicinity. Based on different geometrical structure, the sensor has absorption in different regions of visible spectrum.

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“…The results showed that larger incident wavelengths (700 nm) led to small SPR resonance angles. This may have been due to the increased number of surface oxygen and carboxyl groups in carboxyl-MoS 2 (such as XPS O 1s and C 1 S as shown in Supplementary Figure S1), which resulted in a decrease in the refractive index of the film (Hinman et al, 2018). Figure 3C shows theoretical calculation using Fresnel's equations to evaluate the SPR reflectance curve of sensing chip structures and different medium interface parameters.…”

Section: Analysis Of Coupling Effect Of the Spr Mode In Carboxyl-mos mentioning

confidence: 99%

High-Sensitivity Detection of the Lung Cancer Biomarker CYFRA21-1 in Serum Samples Using a Carboxyl-MoS2 Functional Film for SPR-Based Immunosensors

Chiu

Yang

2020

Front. Bioeng. Biotechnol.

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We constructed a novel surface plasmon resonance (SPR) detection assay using carboxyl-functionalized molybdenum disulfide (carboxyl-MoS 2) nanocomposites as a signal amplification sensing film for the ultrasensitive detection of the lung cancer-associated biomarker cytokeratin 19 fragment (CYFRA21-1). The experiment succeeded in MoS 2 reacted with chloroacetic acid giving carboxyl-MoS 2 as the reaction product. The additional shoulder in the C 1s and O 1s peaks of carboxyl-MoS 2 , which were increased in X-ray photoelectron spectroscopy, confirmed the presence of O-C=O groups on the surface of the carboxyl-MoS 2. Compared to MoS 2 , the experimental results confirmed that carboxyl-modified MoS 2 had improved low impedance and low refractive index. The carboxyl-MoS 2-based chip had a high affinity, with an SPR angle shift enhanced by 2.6-fold and affinity binding K A enhanced by 15-fold compared to a traditional SPR sensor. The results revealed that the carboxyl-MoS 2-based chip had high sensitivity, specificity, and SPR signal affinity, while the CYFRA21-1 assay in spiked clinical serum showed a lower detection limit of 0.05 pg/mL and a wider quantitation range (0.05 pg/mL to 100 ng/mL). The carboxyl-MoS 2-based chip detection value was about 10 4 times more sensitive than the limit of detection of an enzyme-linked immunosorbent assay (ELISA) (0.60 ng/mL). The results showed that the carboxyl-MoS 2-based chip had the potential to rapidly assay complex samples including bodily fluids, whole blood, serum, plasma, urine, and saliva in SPR-based immunosensors to diagnose diseases including cancer.

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Surface Plasmon Resonance: Material and Interface Design for Universal Accessibility

Cited by 121 publications

References 225 publications

Plasmonic Sensing with 3D Printed Optics

Plasmonic Sensing with 3D Printed Optics

Recording Neural Activity Based on Surface Plasmon Resonance by Optical Fibers-A Computational Analysis

High-Sensitivity Detection of the Lung Cancer Biomarker CYFRA21-1 in Serum Samples Using a Carboxyl-MoS2 Functional Film for SPR-Based Immunosensors

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