A love wave biosensor using Aptamer sensitive layer

2010 ◽  
Author(s):  
Li-na Cheng ◽  
Hong-lang Li ◽  
Yong Liang ◽  
Shi-tang He ◽  
Zhao-yang Tong
Keyword(s):  
Love Wave ◽  
Sensitive Layer

scholarly journals Love Wave Surface Acoustic Wave Sensor with Laser-Deposited Nanoporous Gold Sensitive Layer

Sensors ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 4492 ◽  
Author(s):  
Viespe ◽  
Dinca ◽  
Popescu-Pelin ◽  
Miu
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Love Wave ◽  
Limit Of Detection ◽  
Wave Surface ◽  
Sensitivity Limit ◽  
Sensitive Layer ◽  
Acoustic Wave Sensors ◽  
Acoustic Wave Sensor ◽  
Wave Sensors

Laser-deposited gold immobilization layers with different porosities were incorporated into Love Wave Surface Acoustic Wave sensors (LW-SAWs). Acetylcholinesterase (AChE) enzyme was immobilized onto three gold interfaces with different morphologies, and the sensor response to chloroform was measured. The response of the sensors to various chloroform concentrations indicates that their sensing properties (sensitivity, limit of detection) are considerably improved when the gold layers are porous, in comparison to a conventional dense gold layer. The results obtained can be used to improve properties of SAW-based biosensors by controlling the nanostructure of the gold immobilization layer, in combination with other enzymes and proteins, since the design of the present sensor is the same as that for a Love Wave biosensor.

Graphene oxide as sensitive layer in Love-wave surface acoustic wave sensors for the detection of chemical warfare agent simulants

Talanta ◽  
2016 ◽  
Vol 148 ◽  
pp. 393-400 ◽  
Author(s):  
Isabel Sayago ◽  
Daniel Matatagui ◽  
María Jesús Fernández ◽  
José Luis Fontecha ◽  
Izabela Jurewicz ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Love Wave ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Wave Surface ◽  
Sensitive Layer ◽  
Acoustic Wave Sensors ◽  
Wave Sensors

scholarly journals Cultivation of Saccharomyces cerevisiae with Feedback Regulation of Glucose Concentration Controlled by Optical Fiber Glucose Sensor

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 565
Author(s):  
Lucie Koštejnová ◽  
Jakub Ondráček ◽  
Petra Majerová ◽  
Martin Koštejn ◽  
Gabriela Kuncová ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Optical Fiber ◽  
Glucose Concentration ◽  
Glucose Sensor ◽  
Ruthenium Complex ◽  
Feedback Regulation ◽  
Regulation System ◽  
Sensitive Layer ◽  
Average Deviation ◽  
Glucose Content

Glucose belongs among the most important substances in both physiology and industry. Current food and biotechnology praxis emphasizes its on-line continuous monitoring and regulation. These provoke increasing demand for systems, which enable fast detection and regulation of deviations from desired glucose concentration. We demonstrated control of glucose concentration by feedback regulation equipped with in situ optical fiber glucose sensor. The sensitive layer of the sensor comprises oxygen-dependent ruthenium complex and preimmobilized glucose oxidase both entrapped in organic–inorganic polymer ORMOCER®. The sensor was placed in the laboratory bioreactor (volume 5 L) to demonstrate both regulations: the control of low levels of glucose concentrations (0.4 and 0.1 mM) and maintenance of the glucose concentration (between 2 and 3.5 mM) during stationary phase of cultivation of Saccharomyces cerevisiae. Response times did not exceed 6 min (average 4 min) with average deviation of 4%. Due to these regulation characteristics together with durable and long-lasting (≥2 month) sensitive layer, this feedback regulation system might find applications in various biotechnological processes such as production of low glucose content beverages.

scholarly journals Nanocrystalline TiO2 Sensitive Layer for Plasmonic Hydrogen Sensing

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1490
Author(s):  
Enrico Gazzola ◽  
Michela Cittadini ◽  
Marco Angiola ◽  
Laura Brigo ◽  
Massimo Guglielmi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonance Sensor ◽  
Sensitive Layer ◽  
Plasmonic Sensor ◽  
Nanocrystalline Tio2 ◽  
Resonance Sensor

Solution processed TiO2 anatase film was used as sensitive layer for H2 detection for two plasmonic sensor configurations: A grating-coupled surface plasmon resonance sensor and a localized surface plasmon resonance sensor with gold nanoparticles. The main purpose of this paper is to elucidate the different H2 response observed for the two types of sensors which can be explained considering the hydrogen dissociation taking place on TiO2 at high temperature and the photocatalytic activity of the gold nanoparticles.

scholarly journals Novel Microwave Gas Sensor using Dielectric Resonator With SnO2 Sensitive Layer

2009 ◽  
Vol 1 (1) ◽  
pp. 935-938 ◽  
Author(s):  
H. Hallil ◽  
P. Ménini ◽  
H. Aubert
Keyword(s):  
Gas Sensor ◽  
Dielectric Resonator ◽  
Sensitive Layer
Sign in / Sign up

Export Citation Format

Share Document