A SnSe/SnO2 p-n heterojunction single-sensor virtual electronic nose using a PCA-KNN framework enables room-temperature, non-contact detection and classification of volatile sulfur compounds released during methamphetamine production and trafficking, with high response to low-concentration H2S and 96.7% accuracy for H2
As of the September 2026 publication, researchers reported a SnSe/SnO2 p-n heterojunction device operated as a single-sensor virtual electronic nose for volatile sulfur compounds associated with illicit methamphetamine trafficking. The work combined material synthesis, DFT analysis of adsorption energetics, and a PCA-KNN model built on 12-dimensional features from response curves to identify six VSC systems.
- Impact 30%
- 69
- Evidence 25%
- 95
- Scale 20%
- 85
- Confidence 15%
- 87
- Recency 10%
- 94
Updated Sep 8, 2026 · TRV-2026-1015
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