scholarly journals Label-free measurement of cell-electrode cleft gap distance with a high spatial resolution surface plasmon microscopy

2014 ◽  
Author(s):  
Koji Toma ◽  
Hiroshi Kano ◽  
Andreas Offenhäeusser
Keyword(s):  
Surface Plasmon ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Label Free ◽  
Cell Electrode ◽  
Surface Plasmon Microscopy

High Spatial Resolution Mapping of Localized Surface Plasmon Resonances in Single Gallium Nanoparticles

Small ◽  
2019 ◽  
Vol 15 (43) ◽  
pp. 1902920 ◽  
Author(s):  
María Mata ◽  
Sergio Catalán‐Gómez ◽  
Flavio Nucciarelli ◽  
José L. Pau ◽  
Sergio I. Molina
Keyword(s):  
Surface Plasmon ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Resolution Mapping ◽  
Gallium Nanoparticles

Seeing Molecules by Eye: Surface Plasmon Resonance Imaging at Visible Wavelengths with High Spatial Resolution and Submonolayer Sensitivity

2008 ◽  
Vol 120 (27) ◽  
pp. 5091-5095 ◽  
Author(s):  
Jimin Yao ◽  
Matthew E. Stewart ◽  
Joana Maria ◽  
Tae-Woo Lee ◽  
Stephen K. Gray ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Spatial Resolution ◽  
Plasmon Resonance ◽  
High Spatial Resolution ◽  
Surface Plasmon Resonance Imaging ◽  
Resonance Imaging ◽  
Visible Wavelengths

Surface Plasmons: a Sensitive Diagnostic Tool for Characterizing Interfaces

1985 ◽  
Vol 43 ◽  
pp. 254-255
Author(s):  
M. R. Scheinfein
Keyword(s):  
Dielectric Constant ◽  
Energy Loss ◽  
Surface Plasmons ◽  
Electron Energy ◽  
Surface Plasmon ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Excitation Energies ◽  
Asymptotic Energy ◽  
Electron Energy Loss

There has been considerable interest in characterizing the electronic and chemical properties of interfaces and grain boundries at high spatial resolution. This abstract describes a technique which utilizes the energy dispersion of surface plasmons in the transmission electron energy loss spectrum to evaluate the local dielectric constant variation across interfaces. This technique is shown to yield extremely high spatial resolution.We have been conducting studies of interfaces in a VG HB-5 STEM located at NRRFSS which is equipped with a high resolution electron energy loss analyzer. In STEM, using small probes, a typical surface plasmon excited by 100 keV electrons (Al for example) reaches its asymptotic energy value at a scattering angle between.3 and.4 mr. Since we are convoluting the incident angular distribution with the surface plasmon intensities integrated over a collection aperture, the surface plasmon excitation energies are given by their asymptotic (in k-space) energy values. These asymptotic energy excitations are very sensitive functions of the thickness and dielectric constant [eg, 2-5] of the surrounding medium.

Surface plasmon microscopy by spatial light switching for label-free imaging with enhanced resolution

2018 ◽  
Vol 43 (4) ◽  
pp. 959 ◽  
Author(s):  
Taehwang Son ◽  
Changhun Lee ◽  
Jinwon Seo ◽  
In-Hong Choi ◽  
Donghyun Kim
Keyword(s):  
Surface Plasmon ◽  
Label Free ◽  
Enhanced Resolution ◽  
Surface Plasmon Microscopy

scholarly journals Performance Analysis of Non-Interferometry Based Surface Plasmon Resonance Microscopes

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5230
Author(s):  
Sorawit Tontarawongsa ◽  
Sarinporn Visitsattapongse ◽  
Suejit Pechprasarn
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Spatial Resolution ◽  
Plasmon Resonance ◽  
Double Point ◽  
Quantitative Imaging ◽  
Single Point ◽  
Azimuthal Angle ◽  
Label Free Detection ◽  
Surface Plasmon Microscopy

Surface plasmon microscopy has been of interest to the science and engineering community and has been utilized in broad aspects of applications and studies, including biochemical sensing and biomolecular binding kinetics. The benefits of surface plasmon microscopy include label-free detection, high sensitivity, and quantitative measurements. Here, a theoretical framework to analyze and compare several non-interferometric surface plasmon microscopes is proposed. The scope of the study is to (1) identify the strengths and weaknesses in each surface plasmon microscopes reported in the literature; (2) quantify their performance in terms of spatial imaging resolution, imaging contrast, sensitivity, and measurement accuracy for quantitative and non-quantitative imaging modes of the microscopes. Six types of non-interferometric microscopes were included in this study: annulus aperture scanning, half annulus aperture scanning, single-point scanning, double-point scanning, single-point scanning, at 45 degrees azimuthal angle, and double-point scanning at 45 degrees azimuthal angle. For non-quantitative imaging, there is a substantial tradeoff between the image contrast and the spatial resolution. For the quantitative imaging, the half annulus aperture provided the highest sensitivity of 127.058 rad/μm2 RIU−1, followed by the full annulus aperture of 126.318 rad/μm2 RIU−1. There is a clear tradeoff between spatial resolution and sensitivity. The annulus aperture and half annulus aperture had an optimal resolution, sensitivity, and crosstalk compared to the other non-interferometric surface plasmon resonance microscopes. The resolution depends strongly on the propagation length of the surface plasmons rather than the numerical aperture of the objective lens. For imaging and sensing purposes, the recommended microfluidic channel size and protein stamping size for surface plasmon resonance experiments is at least 25 μm for accurate plasmonic measurements.

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