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Related Concept Videos

Olfaction01:25

Olfaction

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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
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Correction: Oliveira et al. Effect of Polymer Hydrophobicity in the Performance of Hybrid Gel Gas Sensors for E-Noses. <i>Sensors</i> 2023, <i>23</i>, 3531.

Sensors (Basel, Switzerland)·2024
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Impact of the Cationic Moiety of Ionic Liquids on Chemoselective Artificial Olfaction.

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Effect of Polymer Hydrophobicity in the Performance of Hybrid Gel Gas Sensors for E-Noses.

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Correction to "Nanoscale Events on Cyanobiphenyl-Based Self-Assembled Droplets Triggered by Gas Analytes".

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Enhanced Gas Sensing with Soft Functional Materials.

ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)·2022
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Related Experiment Video

Updated: Dec 6, 2025

Fluorescence detection methods for microfluidic droplet platforms
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Microfluidics in Gas Sensing and Artificial Olfaction.

Guilherme Rebordão1, Susana I C J Palma1, Ana C A Roque1

  • 1UCIBIO, Chemistry Department, School of Science and Technology, NOVA University of Lisbon, Campus Caparica, 2829-516 Caparica, Portugal.

Sensors (Basel, Switzerland)
|October 14, 2020
PubMed
Summary

Microfluidic devices offer a portable, affordable, and sensitive solution for real-time gas sensing and artificial olfaction. These systems provide rapid, non-invasive identification of volatile organic compounds (VOCs) and gases for diverse applications.

Keywords:
artificial olfactiongas sensingmicrofluidicsvolatile organic compounds

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Area of Science:

  • Analytical Chemistry
  • Sensor Technology
  • Microfluidics

Background:

  • Real-time, non-invasive identification of volatile organic compounds (VOCs) and gases is crucial for healthcare, agriculture, and industry.
  • Conventional methods like gas chromatography are often complex and lack portability.
  • There is a growing need for sensitive, selective, and affordable gas sensing devices.

Purpose of the Study:

  • To review the advancements in microfluidic devices for gas sensing and artificial olfaction.
  • To summarize systems utilizing electrical and optical transduction methods.
  • To discuss future perspectives in microfluidic gas sensing technology.

Main Methods:

  • Review of existing literature on microfluidic gas sensing systems.
  • Analysis of devices employing electrical and optical transduction.
  • Summary of various microfluidic system designs for gas analysis.

Main Results:

  • Microfluidic devices offer portability, affordability, low power consumption, and fast response times.
  • These devices enable in situ operation and require minimal sample volumes.
  • Various microfluidic designs have been developed for enhanced gas sensing capabilities.

Conclusions:

  • Microfluidics presents a promising platform for developing advanced artificial olfaction and gas sensing technologies.
  • Microfluidic devices overcome limitations of conventional methods, offering superior performance characteristics.
  • Continued research in microfluidic system design and transduction methods will drive future innovation in gas sensing.