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相关概念视频

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...
49.8K

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相关实验视频

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Real-time In Vitro Monitoring of Odorant Receptor Activation by an Odorant in the Vapor Phase
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Real-time In Vitro Monitoring of Odorant Receptor Activation by an Odorant in the Vapor Phase

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一个色度传感器阵列用于气味可视化.

N A Rakow1, K S Suslick

  • 1Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana 61801, USA.

Nature
|August 30, 2000
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的光学化学传感方法,使用金属氨酸染料阵列进行敏感的蒸汽检测. 该技术可提供高特异性的各种化学蒸气的视觉识别,包括有毒化合物.

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Visually Mediated Odor Tracking During Flight in Drosophila
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Visually Mediated Odor Tracking During Flight in Drosophila

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科学领域:

  • 化学传感器 化学传感器
  • 材料科学 材料科学 材料科学
  • 分析化学 分析化学

背景情况:

  • 基于阵列的蒸汽传感器模仿哺乳动物的嗅觉系统,使用交叉响应元素.
  • 现有的方法经常与易于与金属离子结合的有味道和有毒化合物作斗争.
  • 之前的研究集中在检测非协调有机蒸汽的非特定相互作用上.

研究的目的:

  • 开发一种简单的光学化学传感方法,用于检测和区分各种化学蒸气.
  • 为了利用金属氨酸染料在带结合后的颜色变化进行视觉识别.
  • 为了尽量减少对蒸汽传感器设备中复杂信号传导硬件的需求.

主要方法:

  • 作为传感元件,采用了一系列固定金属氨酸染料作为传感元件.
  • 分析了染料阵列对各种蒸气的化学选择性反应.
  • 用于分析物检测,使用了由连接体结合引起的光学颜色变化.

主要成果:

  • 传感器阵列可视识别了广泛的结合和弱结合蒸气,包括酒精,胺和.
  • 该装置对单个分析物有良好的线性反应,对混合物有可解释的反应.
  • 在低于百万分之2的度下获得了独特的彩色指纹,检测极限低至每亿分之100.

结论:

  • 金属氨酸染料阵列为通用蒸汽检测提供了一种实用而敏感的方法.
  • 这种光学传感方法适用于开发针对杀虫剂,药物和神经毒素的特定探测器.
  • 该方法提供了一个强大的平台,用于在最小的硬件要求下对化学蒸汽进行视觉识别.