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Updated: Jun 27, 2025
Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
Published on: March 13, 2017
Carbon nanotubes integrated photonic barcodes in Herringbone Microfluidics for Multiplex Biomarker Quantification
Xueqin Li1, Rui Liu2, Nan Zhang2
1Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China; Key Laboratory of Biomedical Functional Materials, School of Sciences, Ministry of Education, China Pharmaceutical University, Nanjing, 211198, China.
This study introduces a new microfluidic chip with specialized photonic crystal barcodes for detecting cardiovascular disease (CVD) biomarkers. This high-throughput method enhances detection sensitivity for clinical applications.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Analytical Chemistry
Background:
- Early detection of cardiovascular disease (CVD) is critical for effective treatment and improved patient outcomes.
- Current detection methods often lack the required specificity and sensitivity for high-throughput clinical screening.
- There is a pressing need for advanced diagnostic tools capable of rapid and accurate multiplex biomarker analysis.
Purpose of the Study:
- To develop and evaluate a novel microfluidic system for high-throughput, multiplexed detection of cardiovascular disease (CVD) biomarkers.
- To integrate aptamer-functionalized core-shell photonic crystal (PhC) barcodes with a herringbone microfluidic chip.
- To assess the system's performance in terms of sample capture efficiency and detection sensitivity for clinical samples.
Main Methods:
- Fabrication of core-shell PhC barcodes using co-assembled carboxylated single-wall carbon nanotubes and silicon dioxide nanoparticles.
- Modification of PhC barcodes via hydrogel replication and partial etching to expose carboxyl groups for aptamer functionalization.
- Integration of functionalized barcodes into a herringbone groove microfluidic chip designed to enhance fluid dynamics.
- Testing the system's capability to detect CVD biomarkers using clinical samples.
Main Results:
- The core-shell PhC barcodes successfully retained structural color coding and offered abundant carboxyl groups for probe immobilization.
- The herringbone microfluidic chip design significantly improved fluid vortex resistance and analyte-probe contact frequency.
- The integrated system demonstrated enhanced sample capture efficiency and improved detection sensitivity for CVD biomarkers.
- The system showed potential for multiplex biomarker detection in real clinical sample analysis.
Conclusions:
- The developed core-shell PhC barcodes-integrated herringbone microfluidic system offers a promising platform for sensitive and high-throughput multiplex CVD biomarker detection.
- The unique design of the microfluidic chip and the properties of the PhC barcodes contribute to enhanced diagnostic performance.
- This technology holds significant potential for advancing early diagnosis and monitoring of cardiovascular diseases in clinical settings.
