Abstract
This work presents a portable lab-on-chip system, based on thin film electronic devices and an all-glass microfluidic network, for the real-time monitoring of enzymatic chemiluminescent reactions. The microfluidic network is patterned, through wet etching, in a 1.1 mm-thick glass substrate that is subsequently bonded to a 0.5 mm-thick glass substrate. The electronic devices are amorphous silicon p-i-n photosensors, deposited on the outer side of the thinner glass substrate. The photosensors, the microfluidic network and the electronic boards reading out the photodiodes’ current are enclosed in a small metallic box (10×8×15×cm 3 ) in order to ensure shielding from electromagnetic interferences. Preliminary tests have been performed immobilizing horseradish peroxidase on the inner wall of the microchannel as model enzyme for detecting hydrogen peroxide. Limits of detection and quantification equal to 18 and 60 μM, respectively, have been found. These values are comparable to the best performances reported in literature for chemiluminescent-based optofluidic sensors.
Original language | English |
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Title of host publication | Sensors - Proceedings of the 4th National Conference on Sensors, 2018 |
Editors | Francesco Baldini, Pietro Siciliano, Marco Rossi, Lorenzo Scalise, Corrado Di Natale, Vittorio Ferrari, Valeria Militello, Giorgia Miolo, Bruno Andò, Vincenzo Marletta, Giovanna Marrazza |
Publisher | Springer |
Pages | 189-194 |
Number of pages | 6 |
ISBN (Print) | 9783030043230 |
DOIs | |
Publication status | Published - 2019 |
Event | 4th National Conference on Sensors, 2018 - Catania, Italy Duration: 21 Feb 2018 → 23 Feb 2018 Conference number: 4 |
Publication series
Name | Lecture Notes in Electrical Engineering |
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Volume | 539 |
ISSN (Print) | 1876-1100 |
ISSN (Electronic) | 1876-1119 |
Conference
Conference | 4th National Conference on Sensors, 2018 |
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Country/Territory | Italy |
City | Catania |
Period | 21/02/18 → 23/02/18 |
Keywords
- Amorphous silicon
- Anodic bonding
- Enzymatic reactions
- Horseradish peroxidase
- Microfluidics
- Photosensors