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Michele Galvani1, Alejandro López-Moreno2, Natalia Martín Sabanés2

  • 1Surface Science and Spectroscopy Laboratories@I-LAMP, Department of Mathematics and Physics, Università Cattolica del Sacro Cuore, via della Garzetta 48, 25113 Brescia, Italy.

Journal of the American Chemical Society
|June 20, 2025
PubMed
概括

我们开发了基于MINT的化学电阻,用于在室温下选择性检测挥发性有机化合物 (VOC). 这种电子鼻子技术对低功耗的可穿戴设备和呼吸分析具有前景.

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Olfaction01:25

Olfaction

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.
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The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
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Physiology of Smell and Olfactory Pathway

Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
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