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Chemosensors
Special Issues
Bioinspired Chemical Sensing
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Bioinspired Chemical Sensing

A special issue of Chemosensors (ISSN 2227-9040).

Deadline for manuscript submissions: closed (28 February 2017) | Viewed by 17516

Special Issue Editor

Prof. Dr. Manel del Valle

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Guest Editor
Sensors & Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, Edifici Cn, Campus de Bellaterra (Cerdanyola del Vallés), 08193 Barcelona, Spain
Interests: automation in analytical chemistry; bioinspired analytical systems; FIA systems; SIA systems; chemical sensors; biosensors; genosensors; aptamer sensors; Electrochemical Impedance Spectroscopy; multisensor systems; electronic tongues
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Keywords

  • electronic tongue
  • electronic nose
  • electronic eye
  • sensor skin
  • bioinspired sensor receptors
  • bionspired photonic sensors
  • artificial location
  • artificial olfaction
  • artificial taste
  • artificial sensory panel
  • object tracking
  • odor tracking
  • smart-dust sensors
  • autonomous sensor-actuator systems

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Published Papers (3 papers)

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Research

3442 KiB  
Article
Microfluidic Electronic Tongue Applied to Soil Analysis
by Maria L. Braunger, Flávio M. Shimizu, Mawin J. M. Jimenez, Lucas R. Amaral, Maria H. de Oliveira Piazzetta, Ângelo L. Gobbi, Paulo S. G. Magalhães, Varlei Rodrigues, Osvaldo N. Oliveira and Antonio Riul
Chemosensors 2017, 5(2), 14; https://doi.org/10.3390/chemosensors5020014 - 27 Apr 2017
Cited by 30 | Viewed by 7101
Abstract
Precision agriculture is crucial for increasing food output without expanding the cultivable area, which requires sensors to be deployed for controlling the level of nutrients in the soil. In this paper, we report on a microfluidic electronic tongue (e-tongue) based on impedance measurements [...] Read more.
Precision agriculture is crucial for increasing food output without expanding the cultivable area, which requires sensors to be deployed for controlling the level of nutrients in the soil. In this paper, we report on a microfluidic electronic tongue (e-tongue) based on impedance measurements which is capable of distinguishing soil samples enriched with plant macronutrients. The e-tongue setup consisted of an array of sensing units made with layer-by-layer films deposited onto gold interdigitated electrodes. Significantly, the sensing units could be reused with adequate reproducibility after a simple washing procedure, thus indicating that there is no cross-contamination in three independent sets of measurements. A high performance was achieved by treating the capacitance data with the multidimensional projection techniques Principal Component Analysis (PCA), Interactive Document Map (IDMAP), and Sammon’s Mapping. While an optimized performance was demonstrated with IDMAP and feature selection, during which data of a limited frequency range were used, the distinction of all soil samples was also possible with the well-established PCA analysis for measurements at a single frequency. The successful use of a simple microfluidic e-tongue for soil analysis paves the way for enhanced tools to support precision agriculture. Full article
(This article belongs to the Special Issue Bioinspired Chemical Sensing)
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1682 KiB  
Article
A Chemically-Bound Glutathione Sensor Bioinspired by the Defense of Organisms against Heavy Metal Contamination: Optimization of the Immobilization Conditions
by Clara Pérez-Ràfols, Núria Serrano, José Manuel Díaz-Cruz, Cristina Ariño and Miquel Esteban
Chemosensors 2017, 5(2), 12; https://doi.org/10.3390/chemosensors5020012 - 2 Apr 2017
Cited by 6 | Viewed by 4744
Abstract
The influence of the experimental conditions (glutathione concentration and incubation time and temperature) concerning the covalent immobilization of glutathione via carbodiimide coupling on the behavior of a glutathione modified screen-printed carbon electrode obtained by electrografting is evaluated. The optimized parameters fasten the modification [...] Read more.
The influence of the experimental conditions (glutathione concentration and incubation time and temperature) concerning the covalent immobilization of glutathione via carbodiimide coupling on the behavior of a glutathione modified screen-printed carbon electrode obtained by electrografting is evaluated. The optimized parameters fasten the modification process and improve the performance of the sensor as compared to the usual procedure. This suggests the convenience of a tailored preparation of metal sensors based on metal-binding biomolecules such as glutathione. Full article
(This article belongs to the Special Issue Bioinspired Chemical Sensing)
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2339 KiB  
Article
Hierarchical Self-Assembly of Amino Acid Derivatives into Enzyme-Responsive Luminescent Gel
by Yibao Li, Yu Peng, Wei Liu, Yulan Fan, Yongquan Wu, Xun Li and Xiaolin Fan
Chemosensors 2017, 5(1), 6; https://doi.org/10.3390/chemosensors5010006 - 7 Feb 2017
Cited by 6 | Viewed by 4927
Abstract
In this study, a novel three-component hydrogel has been designed and fabricated via hierarchical self-assembly by amino acid derivative (NPPD), riboflavin (RF) and α-cyclodextrin (α-CD). These molecules were aggregated to form some fibrous structures based on hydrogen bond and π–π stacking. The results [...] Read more.
In this study, a novel three-component hydrogel has been designed and fabricated via hierarchical self-assembly by amino acid derivative (NPPD), riboflavin (RF) and α-cyclodextrin (α-CD). These molecules were aggregated to form some fibrous structures based on hydrogen bond and π–π stacking. The results show that the hydrogel has a specific response to α-amylase and the fluorescence disappears once hydrolyzed. Therefore, this multi-component hydrogel has potential application in the field of drug delivery. Full article
(This article belongs to the Special Issue Bioinspired Chemical Sensing)
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