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Modeling and Simulations of Olfactory Drug Delivery with Passive and Active Controls of Nasally Inhaled Pharmaceutical Aerosols
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Structure Design and Performance Study of Bionic Electronic Nasal Cavity.

Pu Chen1, Zhipeng Yin1, Shun Xu1

  • 1College of Engineering and Technology, Jilin Agricultural University, Changchun 130118, China.

Biomimetics (Basel, Switzerland)
|August 27, 2025
PubMed
Summary

A novel bionic electronic nose, inspired by sturgeon nasal cavities, significantly improves soil pesticide residue detection. This system offers higher accuracy and faster response times compared to traditional methods.

Keywords:
bionic chamberelectronic nosesensorssoil pesticide residue

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Area of Science:

  • Biomimetics and Sensor Technology
  • Environmental Science and Analytical Chemistry

Background:

  • Traditional soil pesticide residue detection methods are often costly and time-consuming.
  • Existing electronic nose systems face challenges with response time and detection accuracy.

Purpose of the Study:

  • To develop a miniaturized bionic electronic nose system for efficient soil pesticide residue detection.
  • To enhance the performance of electronic noses by mimicking biological olfactory structures.

Main Methods:

  • Designed a bionic electronic nasal cavity based on the sturgeon's nasal structure and olfactory principles.
  • Utilized Computational Fluid Dynamics (CFD) for 3D model verification and airflow analysis.
  • Employed K-Nearest Neighbor (K-NN), Random Forest (RF), and Support Vector Machine (SVM) algorithms with 10-fold cross-validation for performance comparison.

Main Results:

  • The bionic chamber demonstrated more uniform gas flow and increased eddy current intensity (2.29x) near the sensor compared to an ordinary chamber.
  • This design enhances odor molecule-sensor contact, reducing response time.
  • The bionic electronic nose achieved a 97.3% recognition rate for soil pesticide residues, outperforming the ordinary chamber.

Conclusions:

  • The sturgeon-inspired bionic electronic nose system significantly improves detection accuracy and efficiency for soil pesticide residues.
  • This technology presents a promising, cost-effective alternative for environmental monitoring.