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

Simulations, fabrication, and characterization of diamond-coated Love wave-type surface acoustic wave sensors

2015 ◽  
Vol 212 (11) ◽  
pp. 2606-2610 ◽  
Author(s):  
A. Talbi ◽  
A. Soltani ◽  
A. Rumeau ◽  
A. Taylor ◽  
L. Drbohlavová ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Love Wave ◽  
Wave Type ◽  
Acoustic Wave Sensors ◽  
Fabrication And Characterization ◽  
Wave Sensors

scholarly journals Enhanced Sensitive Love Wave Surface Acoustic Wave Sensor Designed for Immunoassay Formats

Sensors ◽  
2015 ◽  
Vol 15 (5) ◽  
pp. 10511-10525 ◽  
Author(s):  
Mihaela Puiu ◽  
Ana-Maria Gurban ◽  
Lucian Rotariu ◽  
Simona Brajnicov ◽  
Cristian Viespe ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Love Wave ◽  
Wave Surface ◽  
Acoustic Wave Sensor

scholarly journals Characteristics of Surface Acoustic Wave Sensors with Nanoparticles Embedded in Polymer Sensitive Layers for VOC Detection

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2401 ◽  
Author(s):  
Cristian Viespe ◽  
Dana Miu
Keyword(s):  
Acoustic Wave ◽  
Response Time ◽  
Frequency Shift ◽  
Surface Acoustic Wave ◽  
Limit Of Detection ◽  
Saw Sensor ◽  
Acoustic Wave Sensors ◽  
Volatile Organic ◽  
Wave Sensors ◽  
Better Than

Surface Acoustic Wave (SAW) sensors with several types of polymer sensing films, containing embedded Fe3O4 nanoparticles (NPs) with various dimensions and concentrations, were studied. A sensor with a sensing film consisting of the polymer alone was used for comparison. NPs with a mean diameter of 7 nm were produced by laser ablation with 5 ns pulse durations, and NPs with 13 nm diameters were obtained with a laser having 10 ps pulse durations. The properties of the Surface Acoustic Wave sensors with such sensing films were analyzed. Their response (frequency shift, sensitivity, noise and response time) to three different volatile organic components (VOCs) at various concentrations were compared with one another. The frequency shift and sensitivity increased with increasing NP concentration in the polymer for a given NP dimension and with decreasing NP diameter for a given concentration. The best results were obtained for the smallest NPs used. The SAW sensor containing 7 nm NPs had a limit of detection (LOD) of 65 ppm (almost five times better than the sensor with polymer alone), and a response time of about 9 s for ethanol.

scholarly journals Design of Surface Acoustic Wave Sensors Functionalized with Bisphenol S Based Molecules for Lead Ions Detection

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 872 ◽  
Author(s):  
Ghada Attia ◽  
Zineb Khaldi ◽  
Seyfeddine Rahali ◽  
Najla Fourati ◽  
Chouki Zerrouki ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Density Functional ◽  
Limit Of Detection ◽  
Lead Ions ◽  
Bisphenol S ◽  
Functional Theory ◽  
Saw Sensor ◽  
Acoustic Wave Sensors ◽  
Wave Sensors

This study concerns the design of surface acoustic wave sensors functionalized with bisphenol S based molecules for lead ions detection. (4-hydroxyphenyl, 4′-benzyloxyphenyl) sulfone (M1), (4-hydroxyphenyl,4′-anthrylmethyloxyphenyl) sulfone (M2) and (4,4′-bis (anthrylmethyloxyphenyl)) sulfone (M3) were synthesized and then drop-coated on the SAWs sensing areas. Gravimetric results indicate that the limit of detection of the three sensors is in the picomolar range and that the M3/SAW sensor has the highest affinity towards lead ions compared to M1/SAW and M2/SAW. Density functional theory (DFT) calculations were investigated to support experimental results and to understand the nature of interactions involved between lead ions and the three synthetized molecules.

Love wave surface acoustic wave sensor for ice detection on aircraft

1999 ◽  
Vol 106 (4) ◽  
pp. 2269-2269
Author(s):  
Vasundara V. Varadan ◽  
Sunil Gangadharan ◽  
Vijay K. Varadan
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Love Wave ◽  
Wave Surface ◽  
Acoustic Wave Sensor ◽  
Ice Detection

scholarly journals Telemetric surface acoustic wave sensor for humidity

2003 ◽  
Vol 1 ◽  
pp. 131-133 ◽  
Author(s):  
M. Dierkes ◽  
U. Hilleringmann
Keyword(s):  
Acoustic Wave ◽  
Resonance Frequency ◽  
Radio Wave ◽  
Surface Acoustic Wave ◽  
Acoustic Waves ◽  
Acoustic Wave Sensors ◽  
Acoustic Wave Sensor ◽  
Band Pass ◽  
Wave Sensors ◽  
Piezoelectric Substrate

Abstract. Surface acoustic wave sensors consist of a piezoelectric substrate with metal interdigital transducers (IDT) on top. The acoustic waves are generated on the surface of the substrate by a radio wave, as it is well known in band pass filters. The devices can be used as wireless telemetric sensors for temperature and humidity, transmitting the sensed signal as a shift of the sensor’s resonance frequency.

Aluminum Nitride Thin Film Based Surface Acoustic Wave Sensors

2008 ◽  
Author(s):  
A. Kabulski ◽  
V. R. Pagán ◽  
D. Cortes ◽  
R. Burda ◽  
O. M. Mukdadi ◽  
...  
Keyword(s):  
Thin Film ◽  
Acoustic Wave ◽  
Aluminum Nitride ◽  
Surface Acoustic Wave ◽  
Acoustic Wave Sensors ◽  
Wave Sensors
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