title: Noninvasive in-vehicle alcohol detection with wavelength-modulated differential photothermal radiometry.
abstract: This study describes the potential of wavelength-modulated differential photothermal radiometry (WM-DPTR) for non-invasive in-vehicle alcohol detection which can be of great importance in reducing alcohol-impaired driving. Ethanol content in the range of concern, 0-100 blood alcohol concentration (BAC) in water phantoms and blood serum diffused in human skin in vitro were measured with high sensitivity. The results show that the WM-DPTR system can be optimized for alcohol detection with the combination of two sensitivity-tuning parameters, amplitude ratio R and phase shift ΔP. WM-DPTR has demonstrated the potential to be developed into a portable alcohol ignition interlock biosensor that could be fitted as a universal accessory in vehicles.
authors: Center for Advanced Diffusion-Wave Technologies (CADIFT), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON M5S 3G8, Canada.
authors: Xinxin
authors: X
authors: Guo
authors: Center for Advanced Diffusion-Wave Technologies (CADIFT), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON M5S 3G8, Canada.
authors: Andreas
authors: A
authors: Mandelis
authors: Center for Advanced Diffusion-Wave Technologies (CADIFT), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON M5S 3G8, Canada.
authors: Yijun
authors: Y
authors: Liu
authors: Alcohol Countermeasure Systems Corp, 60 International Boulevard, Toronto, ON M9W 6J2, Canada.
authors: Bo
authors: B
authors: Chen
authors: Alcohol Countermeasure Systems Corp, 60 International Boulevard, Toronto, ON M9W 6J2, Canada.
authors: Qun
authors: Q
authors: Zhou
authors: Alcohol Countermeasure Systems Corp, 60 International Boulevard, Toronto, ON M9W 6J2, Canada.
authors: Felix
authors: F
authors: Comeau
keywords: (170.1470) Blood or tissue constituent monitoring; (280.1415) Biological sensing and sensors; (300.6430) Spectroscopy, photothermal