Electronic Gas Sensors, Sensor Array, and Electronic Nose for Environment Monitoring and Medical Diagnosis
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".
Deadline for manuscript submissions: closed (31 October 2020) | Viewed by 295
Special Issue Editors
Interests: electronic gas sensors; sensor array; electronic nose; environment monitoring; medical diagnosis; breath analysis; electromagnetic shielding; flexible antenna; volatile organic compounds; conducting polymers
Interests: intrinsically conducting polymers (ICP); conjugated polymers; conducting hybrid nanocomposites; materials for electronic gas sensors; environment monitoring and protection; breath analysis for medical diagnostics; electromagnetic interference shielding
Special Issue Information
Dear Colleagues,
Electronic gas sensors are the subject of intense research in response to the high demand for innovative, miniaturized, and energy-efficient sensors. They have many applications in the field of outdoor and indoor air quality, with increasingly stringent exposure standards. Thanks to these sensors, portable, easy-to-use electronic systems can be envisaged to quickly locate a point source of pollution, find the best location for a fixed station, carry out time-limited monitoring, measure people’s exposure, and, through the use of several devices, multiply the measurement points, for example, to map pollutants. Here, the main pollutants are ozone, nitrogen oxides, carbon oxides, ammonia, hydrogen sulfide, and volatile organic compounds (VOC).
Another important emerging field is the detection of gaseous compounds in the breath of patients (biomarkers) with diseases such as cancer, kidney failure, Parkinson’s disease or Alzheimer's disease, etc. The objective here is to highlight changes in the chemical signature of a patient’s breath in order to non-invasively diagnose the disease at early stages. For example, the 5-year survival rate for early detection of lung cancer is 85%, and 15% for late detection. In this application, the objective is to replace the classical analytical chemistry tools, which are expensive and difficult to use in daily medical practice, with intelligent electronic systems that are easy to use by the medical staff.
Both in the environmental and medical applications, there are many challenges to detect trace gas compounds in complex environments due to the different specificity of the sensors in terms of selectivity, drift, and stability, time life, and moisture influence and to conceive electronic gas sensors with a short response time and low detection limit. This specificity is controlled due to the correct choice of sensing materials and nanomaterials that have already made an enormous progress possible, whether with sensors based on metal oxides, carbonaceous materials, different heterostructures, conductive polymers or their hybrid nanocomposites with inorganic materials.
Sometimes, it is not necessary to identify and quantify a gas individually but to obtain a global signature to characterize a given environment. It is then necessary to manufacture sensor matrices by combining them with algorithms to correct the individual responses of the sensors that make up the matrix. These electronic noses have proven their effectiveness in odor detection or medical diagnosis with confidence levels close to 90%.
This Special Issue will cover a wide range of topics, including the design, fabrication, and characterization of electronic gas sensors, sensor array, and electronic nose and sensitive materials for these applications to highlight the recent advances and new applications in the field.
Prof. Dr. Jean-Luc Wojkiewicz
Prof. Dr. Alexander Pud
Guest Editors
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Keywords
- Electronic gas sensors
- Sensor array
- Electronic nose
- Environment monitoring
- Medical diagnosis
- Materials for sensors
- Metal oxides
- Carbonaceous materials
- Conducting polymers
- Nanocomposites
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