Label-free surface plasmon resonance biosensing with titanium nitride thin film

2018 ◽  
Vol 106 ◽  
pp. 129-135 ◽  
Author(s):  
Guangyu Qiu ◽  
Siu Pang Ng ◽  
Chi-Man Lawrence Wu
Keyword(s):  
Thin Film ◽  
Free Surface ◽  
Surface Plasmon Resonance ◽  
Titanium Nitride ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Label Free

Label-free surface-plasmon resonance fiber grating biosensor for Hand-foot-mouth disease (EV-A71) detection

Optik ◽  
2021 ◽  
Vol 228 ◽  
pp. 166221
Author(s):  
Waldo Udos ◽  
Cheong-Weng Ooi ◽  
Soon-Hao Tan ◽  
Kok-Sing Lim ◽  
Yen Jie Ee ◽  
...  
Keyword(s):  
Free Surface ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Mouth Disease ◽  
Fiber Grating ◽  
Label Free ◽  
Hand Foot Mouth Disease

Label-free surface plasmon resonance detection of hydrogen peroxide; a bio-inspired approach

2016 ◽  
Vol 227 ◽  
pp. 373-382 ◽  
Author(s):  
Amirmostafa Amirjani ◽  
Mozhgan Bagheri ◽  
Mojgan Heydari ◽  
Saeed Hesaraki
Keyword(s):  
Hydrogen Peroxide ◽  
Free Surface ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Label Free ◽  
Resonance Detection

scholarly journals Real-Time Label-Free Surface Plasmon Resonance Biosensing with Gold Nanohole Arrays Fabricated by Nanoimprint Lithography

Sensors ◽  
2013 ◽  
Vol 13 (10) ◽  
pp. 13960-13968 ◽  
Author(s):  
Josu Martinez-Perdiguero ◽  
Aritz Retolaza ◽  
Deitze Otaduy ◽  
Aritz Juarros ◽  
Santos Merino
Keyword(s):  
Free Surface ◽  
Surface Plasmon Resonance ◽  
Real Time ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Nanoimprint Lithography ◽  
Label Free ◽  
Nanohole Arrays

Surface Plasmon Resonance Imaging: A Technique to Reveal the Dropwise Condensation Mechanism

2020 ◽  
Vol 142 (3) ◽  
Author(s):  
Shahab Bayani Ahangar ◽  
Jeffrey S. Allen ◽  
Seong Hyuk Lee ◽  
Chang Kyoung Choi
Keyword(s):  
Thin Film ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
High Temporal Resolution ◽  
Dropwise Condensation ◽  
Surface Plasmon Resonance Imaging ◽  
Label Free ◽  
Resonance Imaging ◽  
Ambient Conditions

Abstract To understand the physics behind dropwise condensation, a microscopy technique must be able to measure a sub-nanometer film at a high temporal resolution (>1,000 FPS). In this work, automated Surface Plasmon Resonance imaging (SPRi) is used as a tool to study the existence of a thin film between the dropwise condensate. SPRi is a label-free imaging technique that works based on the attenuated total internal reflection. SPRi can detect changes in the refractive index (RI) of the test medium in the thin region (<300 nm) above the sensing gold layer. The automated, angle-scanning SPRi instrument was developed by integrating linear and rotating motorized stages. This instrument improves conventional SPRi by enhancing the resolution of angle probing, increasing the speed of angle scanning, and minimizing the angle-dependent image artifacts. As a proof of concept, we visualized the three stages of coalescence at 10,000 FPS, including bridge formation, composite peanut-shape droplet formation, and the relaxation stage. Furthermore, we probed the solid-vapor interface during the dropwise condensation to evaluate the existence of a thin film on the substrate. The results of our visualization show that the area between droplets is covered by an adsorbed film with a thickness of a monolayer (0.275 nm) and a surface coverage of less than one (m2/m2). Moreover, the results reveal a dry region forms on the substrate when part of the substrate is exposed to ambient conditions due to the coalescence. The dry zone on the substrate has higher surface energy, as compared to the surrounding area. Therefore, the exposed area serves as a favorable site for vapor molecules to strike the surface and form new nuclei.

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