study of mid-infrared light scattering due to skin for a non-invasive glucose monitor with an...
Post on 21-Dec-2015
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TRANSCRIPT
Study of Mid-Infrared Light Scattering Due to Skin for a Non-Invasive Glucose Monitor with an Automated Setup
Kevin A. Bors, Sabbir Liakat, Anna P. M. Michel, and Claire F. Gmachl
• Quantum Cascade Lasers– More efficient energy solutions– Field testing– Good for developing countries
• Mid-Infrared Technologies for Health and the Environment
2
MIRTHE and General Motivations for Research
Specific Motivation for Research
• Diabetes patients
3
Example absorption spectrum of glucose
103
6
108
0
110
6
115
2
Experimental Setup
• BARD (bi-axial rotation device)
• QCL (Quantum Cascade Laser)
4
• Close-up of BARD setup
5
Experimental Setup
6
Program Capabilities
Variables Controlled by Program:• Axis of rotation• Range and precision
of angular movements of that axis
• Position of other axis• Range and Precision
of Wavenumber Movements
• Example scan using program
7
Results of an Automated Scan Measuring Reflected Light as a Function of Position
Backscattered Light Intensity for Incidence φ=40°
Results of an Automated Scan Measuring Reflected Light as a Function of Position
• Light is Scattered by Dermis (Inner Layer of Skin)
• Glucose here proportional to level in blood
• Absorption Spectroscopy
8
• Non-invasive glucose sensing• Automation of BARD
• Independent work
• Thanks to PEI, MIRTHE, and Professor Gmachl’s Group
9
Summary, Future Work, and Acknowledgements