Sensitive detection of voltage transients using differential intensity surface plasmon resonance system

Abayzeed, Sidahmed; Smith, Richard J.; Webb, Kevin F.; Somekh, Michael Geoffrey; See, C. W.

doi:10.1364/oe.25.031552

Cited by 22 publications

(17 citation statements)

References 45 publications

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“…This 47 nm gold sensor was then calculated for different applied voltage levels as shown in Figure 7 b. The responses here agree very well with the results reported in Abayzeed et al [ 16 ]. The results in Figure 7 b allows us to calculate the defined performance parameters as shown in Figure 8 .…”

Section: Resultssupporting

confidence: 86%

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Quantitative Cross-Platform Performance Comparison between Different Detection Mechanisms in Surface Plasmon Sensors for Voltage Sensing

Suvarnaphaet

Pechprasarn

2018

Sensors

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Surface plasmon Resonance (SPR) has recently been of interest for label-free voltage sensing. Several SPR structures have been proposed. However, making a quantitative cross-platform comparison for these structures is not straightforward due to (1) different SPR measurement mechanisms; (2) different electrolytic solution and concentration in the measurement; and (3) different levels of external applied potential. Here, we propose a quantitative approach to make a direct quantitative comparison across different SPR structures, different electrolytic solutions and different SPR measurement mechanisms. There are two structures employed as example in this theoretical study including uniform plasmonic gold sensor and bimetallic layered structure consisting of uniform silver layer (Ag) coated by uniform gold layer (Ag). The cross-platform comparison was carried by several performance parameters including sensitivity (S), full width half maximum (FWHM) and figure of merit (FoM). We also discuss how the SPR measurement mechanisms enhance the performance parameters and how the bimetallic layer can be employed to enhance the FoM by a factor of 1.34 to 25 depending on the SPR detection mechanism.

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Section: Resultssupporting

confidence: 86%

“…Recently, there has been an interest in employing label-free detection using surface plasmon resonance (SPR) as a voltage sensing platform for biological samples [ 15 , 16 , 17 , 18 , 19 ]. The SPR has been a gold standard for real-time binding kinetics studies [ 20 ] and very low concentration biological measurements [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Cross-Platform Performance Comparison between Different Detection Mechanisms in Surface Plasmon Sensors for Voltage Sensing

Suvarnaphaet

Pechprasarn

2018

Sensors

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“…Our observations suggested that we could wirelessly drive redox chemistry via the application of an electrical field at a low potential difference that was orders of magnitude lower to that reported at other nanostructures, such as carbon nanotubes (CNTs) 16 . To further prove our hypothesis that redox reactions could be triggered at relatively low voltage, we explored an alternative label-free approach based on the voltage sensitivity of plasmonic nanostructures [26][27][28][29][30][31] .…”

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confidence: 99%

Wireless Nanobioelectronics for Electrical Intracellular Sensing

Sanjuán-Alberte

Jain

Shaw

et al. 2019

ACS Appl. Nano Mater.

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In order for the field of bioelectronics to make an impact on healthcare, there is an urgent requirement for the development of "wireless" electronic systems to both sense and actuate cell behaviour. Herein we report the first example of an innovative intracellular wireless electronic communication system. We demonstrate that chemistry can be electrically modulated in a "wireless" manner on the nanoscale at the surface of conductive nanoparticles uptaken by cells at unreported low potentials. The system is made functional by modifying gold nanoparticles incorporating a Zn-porphyrin, which are taken up by cells and are shown to be biocompatible. It is demonstrated the redox state of Zn-porphyrin modified gold nanoparticles is modulated and reported on fluorescently when applying an external electrical potential. This provides an attractive new "wireless" approach to develop novel bioelectronic devices for modulating and sensing cellular behaviour using intracellular monitoring. The field of bioelectronic medicine offers a new paradigm in therapeutic intervention 1, 2. The technology is in its infancy, but relies on the ability to merge electronic devices with biology to then be used to sense and actuate cell/tissue and organ behaviour 3. The key challenge in advancing the field further is to develop new non-invasive methods to both electrically sense and actuate cell 3 behaviour. Our group 4-6 and others 7-10 have pioneered new methods for electrically communicating with the internal environment of a cell via use of nanowire electrodes. However, these methods tend to be invasive in nature as they necessarily have to pierce the plasma membrane which can lead to cell perturbations 11, 12. In addition, these electrodes require physical electrical connectivity from inside of the cells to the outside, thus hindering their use in more complex biological environments. Therefore, an approach to addressing these issues is to develop novel wireless electronic systems for the development of intracellular sensors and actuators. The development of novel bioelectronics using such a wireless-electronic approach may subsequently enable significant advancements in the ability to use intracellular electronics to facilitate cell communication and actuation. Therefore, the aim of this work was to develop a new bioelectronic approach for sensing electrical changes in response to the application of an externally applied voltage inside biological cells, thereby offering the first example of a wireless electronic tool to modulate redox inside of cells 13-14. The work undertaken was inspired by the fields of bipolar electrochemistry and drug delivery. Bipolar electrochemistry (also known as wireless electrochemistry) relies on placing a conductive particle between feeder electrodes which have potential difference placed across them. This causes the conductive particle to polarise and in doing so, causes a potential difference between the electrolyte and poles of the particle, consequently providing the thermodyamic driving force required ...

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“…In a typical dielectric medium such as air, an external field can modulate plasmonic resonances by changing the carrier density n e of the PNA within a skin depth at the surface, known as Thomas-Fermi screening length [157,194,195]. Depending on the direction of the applied electric field, carrier density Δn e increases (decreases) due to charge accumulation (depletion) at the surface [196,197]. This free-carrier density variation results in alteration of the plasma frequency ω p .…”

Section: Electrical Gatingmentioning

confidence: 99%

Active plasmonic nanoantenna: an emerging toolbox from photonics to neuroscience

et al. 2020

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Concepts adapted from radio frequency devices have brought forth subwavelength scale optical nanoantenna, enabling light localization below the diffraction limit. Beyond enhanced light–matter interactions, plasmonic nanostructures conjugated with active materials offer strong and tunable coupling between localized electric/electrochemical/mechanical phenomena and far-field radiation. During the last two decades, great strides have been made in development of active plasmonic nanoantenna (PNA) systems with unconventional and versatile optical functionalities that can be engineered with remarkable flexibility. In this review, we discuss fundamental characteristics of active PNAs and summarize recent progress in this burgeoning and challenging subfield of nano-optics. We introduce the underlying physical mechanisms underpinning dynamic reconfigurability and outline several promising approaches in realization of active PNAs with novel characteristics. We envision that this review will provide unambiguous insights and guidelines in building high-performance active PNAs for a plethora of emerging applications, including ultrabroadband sensors and detectors, dynamic switches, and large-scale electrophysiological recordings for neuroscience applications.

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Sensitive detection of voltage transients using differential intensity surface plasmon resonance system

Cited by 22 publications

References 45 publications

Quantitative Cross-Platform Performance Comparison between Different Detection Mechanisms in Surface Plasmon Sensors for Voltage Sensing

Quantitative Cross-Platform Performance Comparison between Different Detection Mechanisms in Surface Plasmon Sensors for Voltage Sensing

Wireless Nanobioelectronics for Electrical Intracellular Sensing

Active plasmonic nanoantenna: an emerging toolbox from photonics to neuroscience

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