scholarly journals Multifunctional Chemical Sensing Platform Based on Dual‐Resonant Infrared Plasmonic Perfect Absorber for On‐Chip Detection of Poly(ethyl cyanoacrylate)

2021 ◽  
pp. 2101879
Author(s):  
Dongxiao Li ◽  
Hong Zhou ◽  
Xindan Hui ◽  
Xianming He ◽  
He Huang ◽  
...  
Keyword(s):  
Chemical Sensing ◽  
Perfect Absorber ◽  
Sensing Platform ◽  
Ethyl Cyanoacrylate ◽  
On Chip

scholarly journals Investigation of dual-bend serpentine/spiral waveguides coupled to a microchannel system for competent, evanescent-wave-absorption-based, on-chip, biological-/chemical-sensing applications

RSC Advances ◽  
2018 ◽  
Vol 8 (62) ◽  
pp. 35539-35550
Author(s):  
Amit Prabhakar ◽  
Neha Mishra ◽  
Deepti Verma ◽  
Soumyo Mukherji
Keyword(s):  
Evanescent Wave ◽  
Chemical Sensing ◽  
High Sensitivity ◽  
Biological Sensing ◽  
Wave Absorption ◽  
Sensing Applications ◽  
Sensing Platform ◽  
Bend Waveguide ◽  
On Chip

The reported device is a versatile sensing-platform, with high sensitivity, for any chemical/biological-sensing applications, if suitable surface adaptation is first performed to the microchannel-system-embedded duel-bend waveguide-probe.

Review of Microfluidic Devices for On-Chip Chemical Sensing

2016 ◽  
Vol 136 (6) ◽  
pp. 244-249
Author(s):  
Takahiro Watanabe ◽  
Fumihiro Sassa ◽  
Yoshitaka Yoshizumi ◽  
Hiroaki Suzuki
Keyword(s):  
Chemical Sensing ◽  
Microfluidic Devices ◽  
On Chip

scholarly journals Graphene-Based Sensing Platform for On-Chip Ochratoxin A Detection

Toxins ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 550 ◽  
Author(s):  
Nekrasov ◽  
Kireev ◽  
Emelianov ◽  
Bobrinetskiy
Keyword(s):  
Ochratoxin A ◽  
Large Scale ◽  
Red Wine ◽  
Regeneration Time ◽  
Sensing Platform ◽  
Graphene Field Effect Transistor ◽  
Sensor Fabrication ◽  
Effect Transistor ◽  
On Chip ◽  
Sensor Assembly

In this work, we report an on-chip aptasensor for ochratoxin A (OTA) toxin detection that is based on a graphene field-effect transistor (GFET). Graphene-based devices are fabricated via large-scale technology, allowing for upscaling the sensor fabrication and lowering the device cost. The sensor assembly was performed through covalent bonding of graphene’s surface with an aptamer specifically sensitive towards OTA. The results demonstrate fast (within 5 min) response to OTA exposure with a linear range of detection between 4 ng/mL and 10 pg/mL, with a detection limit of 4 pg/mL. The regeneration time constant of the sensor was found to be rather small, only 5.6 s, meaning fast sensor regeneration for multiple usages. The high reproducibility of the sensing response was demonstrated via using several recycling procedures as well as various GFETs. The applicability of the aptasensor to real samples was demonstrated for spiked red wine samples with recovery of about 105% for a 100 pM OTA concentration; the selectivity of the sensor was also confirmed via addition of another toxin, zearalenone. The developed platform opens the way for multiplex sensing of different toxins using an on-chip array of graphene sensors.

On-chip integrated differential optical microring refractive index sensing platform based on a laminar flow scheme

2015 ◽  
Vol 40 (17) ◽  
pp. 4106 ◽  
Author(s):  
Dongwan Kim ◽  
Paula Popescu ◽  
Mark Harfouche ◽  
Jacob Sendowski ◽  
Maria-Eleni Dimotsantou ◽  
...  
Keyword(s):  
Refractive Index ◽  
Laminar Flow ◽  
Flow Scheme ◽  
Refractive Index Sensing ◽  
Sensing Platform ◽  
On Chip

A wearable fingernail chemical sensing platform: pH sensing at your fingertips

Talanta ◽  
2016 ◽  
Vol 150 ◽  
pp. 622-628 ◽  
Author(s):  
Jayoung Kim ◽  
Thomas N. Cho ◽  
Gabriela Valdés-Ramírez ◽  
Joseph Wang
Keyword(s):  
Chemical Sensing ◽  
Ph Sensing ◽  
Sensing Platform

A Low-Cost Disposable Chemical Sensing Platform Based on Discrete Components

2011 ◽  
Vol 32 (3) ◽  
pp. 417-419 ◽  
Author(s):  
Themistoklis Prodromakis ◽  
Yan Liu ◽  
Chris Toumazou
Keyword(s):  
Chemical Sensing ◽  
Low Cost ◽  
Sensing Platform

scholarly journals Automated Chemical Sensing Unit Integration for Parallel Optical Interrogation

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 878 ◽  
Author(s):  
Ana Hernandez ◽  
Fabian Dortu ◽  
Theo Veenstra ◽  
Paula Ciaurriz ◽  
Rafael Casquel ◽  
...  
Keyword(s):  
Chemical Sensing ◽  
Ad Hoc ◽  
Optical Sensing ◽  
Limit Of Detection ◽  
Detection System ◽  
Resonant Mode ◽  
Time Response ◽  
Optical Biosensing ◽  
On Chip

We report the integration of an automated chemical optical sensing unit for the parallel interrogation of 12 BICELLs in a sensing chip. The work was accomplished under the European Project Enviguard (FP7-OCEAN-2013-614057) with the aim of demonstrating an optical nano-biosensing unit for the in-situ detection of various chemical pollutants simultaneously in oceanic waters. In this context, we designed an optical sensing chip based on resonant nanopillars (R-NPs) transducers organized in a layout of twelve biophotonic sensing cells (BICELLs). The sensing chip is interrogated in reflection with a 12-channels optical spectrometer equipped with an embedded computer-on-chip performing image processing for the simultaneous acquisition and analysis (resonant mode fitting) of the 12 spectra. A microfluidic chip and an automated flow control system composed of four pumps and a multi-path micro-valve makes it possible to drive different complex protocols. A rack was designed ad-hoc for the integration of all the modules. As a proof of concept, fluids of different refractive index (RI) were flowed in the system in order to measure the time response (sensogram) of the R-NPs under optical reflectance, and assess the sensors’ bulk sensitivity (285.9 ± 16.4 nm/RIU) and Limit of Detection (LoD) (2.95 × 10−6 RIUS). The real-time response under continuous flow of a sensor chip based on R-NP is showed for the first time, obtaining 12 sensograms simultaneously, featuring the unit as a potential excellent multiplexed detection system. These results indicate the high potential of the developed chemical sensing unit to be used for in-situ, multiplex and automatic optical biosensing.

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