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Dr. Kazi Kutubuddin Sayyad Liyakat,
- Professor and Head, Department of Electronics and Telecommunication Engineering, Brahmdevdada Mane Institute of Technology, Solapur, Maharashtra, India
Abstract
The human sense of smell, a complex and often underestimated faculty, allows us to perceive the world through volatile organic compounds (VOCs). This ability to detect and differentiate between aromas, flavors, and even potential hazards has inspired the development of the electronic nose, or e-nose. More than just a novelty, e-noses are rapidly becoming sophisticated analytical tools with applications that span across numerous industries. By mimicking the biological processes of olfaction, these devices are opening up new avenues for quality control, environmental monitoring, and even disease diagnosis. At their core, e-noses are devices that use an array of chemical sensors to detect and analyze the “smellprint” of a sample. Unlike human noses which rely on olfactory receptors in the nasal cavity, e-noses employ a variety of sensors that react to different chemical compounds. These sensors, often made of materials like conducting polymers, metal oxides, or quartz crystal microbalances, generate unique electrical signals upon interacting with VOCs. This collective response forms a distinct pattern, which is then analyzed by sophisticated software using pattern recognition algorithms. This pattern is the e-nose’s way of “smelling.” The brilliance of e-noses doesn’t just stem from their ability to detect VOCs; it lies in their capacity to learn and differentiate between complex mixtures of these compounds. Through training with known samples, the e-nose can learn to identify specific odors and their corresponding chemical profiles. This capability makes them incredibly versatile, applicable across a spectrum of fields.
Keywords: Sensors, e-Nose, senses of smell, Sensor array, pattern recognition
[This article belongs to Journal of Semiconductor Devices and Circuits (josdc)]
Dr. Kazi Kutubuddin Sayyad Liyakat. The Future is Smelling: Exploring the Potential of e-Nose. Journal of Semiconductor Devices and Circuits. 2025; 12(01):-.
Dr. Kazi Kutubuddin Sayyad Liyakat. The Future is Smelling: Exploring the Potential of e-Nose. Journal of Semiconductor Devices and Circuits. 2025; 12(01):-. Available from: https://journals.stmjournals.com/josdc/article=2025/view=0
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Journal of Semiconductor Devices and Circuits
| Volume | 12 |
| Issue | 01 |
| Received | 20/01/2025 |
| Accepted | 30/01/2025 |
| Published | 08/02/2025 |