A multichannel smartphone optical biosensor for high-throughput point-of-care diagnostics
Li-Ju Wang1, Yu-Chung Chang1, Rongrong Sun1
1School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164 USA.
Biosensors & Bioelectronics
|September 16, 2016
Summary
We developed a novel multichannel smartphone spectrometer (MSS) for simultaneous multi-sample optical biosensing. This portable device offers high-resolution spectral analysis, enabling accurate detection of biomarkers for point-of-care diagnostics.
Area of Science:
- Biomedical Engineering
- Spectroscopy
- Optical Biosensing
Background:
- Existing smartphone spectrometers are limited to single-sample analysis.
- There is a need for portable, high-throughput diagnostic tools.
Purpose of the Study:
- To develop and validate a multichannel smartphone spectrometer (MSS) capable of simultaneous multi-sample optical sensing.
- To demonstrate the MSS's potential for high-throughput point-of-care diagnostics.
Main Methods:
- A novel method for multichannel optical spectral sensing with nanometer resolution on a smartphone was developed.
- A 3D printed cradle integrated optical components with a smartphone and a custom multi-view App.
- Transmission spectra (400-700nm) were obtained with 0.2521nm/pixel resolution.
Main Results:
- The MSS accurately measured protein concentrations and immunoassay results for a human cancer biomarker.
- Performance was comparable to standard laboratory instruments in terms of detection limits, accuracy, and sensitivity.
- The device demonstrated reliable spectral measurements through optical intensity changes and spectral shifts.
Conclusions:
- The developed multichannel smartphone spectrometer (MSS) enables simultaneous optical sensing of multiple samples.
- This technology offers a low-cost, portable solution for high-throughput point-of-care diagnostics.
- The MSS shows significant potential for advancing accessible healthcare monitoring.
