Metal-dielectric nanocavity as a versatile optical sensing platform

2017 ◽  
Author(s):  
V. Milichko ◽  
D. Zuev ◽  
D. Baranov ◽  
G. Zograf ◽  
K. Volodina ◽  
...  
Keyword(s):  
Optical Sensing ◽  
Sensing Platform

ZnO–PDMS Nanohybrids: A Novel Optical Sensing Platform for Ethanol Vapor Detection at Room Temperature

2014 ◽  
Vol 119 (1) ◽  
pp. 623-631 ◽  
Author(s):  
Argyro Klini ◽  
Stavros Pissadakis ◽  
Rabindra N. Das ◽  
Emmanuel P. Giannelis ◽  
Spiros H. Anastasiadis ◽  
...  
Keyword(s):  
Room Temperature ◽  
Optical Sensing ◽  
Ethanol Vapor ◽  
Vapor Detection ◽  
Sensing Platform

Protection and functionalisation of silver as an optical sensing platform for highly sensitive SPR based analysis

The Analyst ◽  
2012 ◽  
Vol 137 (22) ◽  
pp. 5265 ◽  
Author(s):  
Gowri Manickam ◽  
Ram Gandhiraman ◽  
Rajani K. Vijayaraghavan ◽  
Laura Kerr ◽  
Colin Doyle ◽  
...  
Keyword(s):  
Optical Sensing ◽  
Sensing Platform ◽  
Highly Sensitive

scholarly journals A Label-free Optical Sensing Platform for Beta-glucosidase Activity Using Protein-inorganic Hybrid Nanoflowers

2021 ◽  
Author(s):  
Ziping Liu ◽  
Shasha Liu ◽  
Decai Gao ◽  
Yanan Li ◽  
Ye Tian ◽  
...  
Keyword(s):  
Optical Sensing ◽  
Enzymatic Reaction ◽  
Label Free ◽  
Inorganic Hybrid ◽  
Sensing System ◽  
Amplex Red ◽  
Sensing Platform ◽  
Synthesis Strategy ◽  
Beta Glucosidase

Abstract In this work, a convenient, label-free and dual-signal readout optical sensing platform for the sensitively and selectively determination of beta-glucosidase (β-Glu) activity was reported using protein-inorganic hybrid nanoflowers [BSA-Cu3(PO4)2·3H2O] possessing peroxidase-mimicking activity. The nanoflowers (NFs) were facilely synthesized through a self-assembled synthesis strategy at room temperature. The as-prepared NFs could catalytically convert the colorless and non-fluorescent Amplex Red into colored and highly fluorescent resorufin in the presence of hydrogen peroxide via electron transfer process. β-Glu could hydrolyze cyanogenic glycoside, using amygdalin (Amy) as a model, into cyanide ions (CN-), which can subsequently efficiently suppress the catalytic activity of NFs, accompanied with the fluorescence decrease and the color fading. The concentration of CN- was controlled by β-Glu-triggered enzymatic reaction of Amy. Thus, a sensing system was established for fluorescent and visual determination of β-Glu activity. Under the optimum conditions, the present fluorescent and visual bimodal sensing platform exhibited good sensitivity for β-Glu activity assay with a detection limit of 0.33 U·L-1. The sensing platform was further applied to determinate β-Glu in real samples and satisfactory results were attained. Additionally, the label-free optical sensing system can potentially be a promising candidate for β-Glu inhibitors screening.

scholarly journals Graphene-Based Environmental Sensors: Electrical and Optical Devices

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2165
Author(s):  
Hikari Kitadai ◽  
Meng Yuan ◽  
Yongqiang Ma ◽  
Xi Ling
Keyword(s):  
Recent Progress ◽  
Review Paper ◽  
Optical Sensing ◽  
Optical Devices ◽  
Environmental Applications ◽  
Environmental Sensors ◽  
Advantages And Disadvantages ◽  
Sensing Platform ◽  
Sensitivity And Selectivity

In this review paper, we summarized the recent progress of using graphene as a sensing platform for environmental applications. Especially, we highlight the electrical and optical sensing devices developed based on graphene and its derivatives. We discussed the role of graphene in these devices, the sensing mechanisms, and the advantages and disadvantages of specific devices. The approaches to improve the sensitivity and selectivity are also discussed.

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