Black phosphorus enabled non-invasive protein detection with electromagnetic induction well terahertz biosensor chips

Area of Science:

• Biomedical Engineering
• Materials Science
• Optoelectronics

Background:

• Terahertz (THz) biosensors are crucial for detecting cancer biomarkers, aiding early diagnosis and treatment monitoring.
• Black phosphorus (BP) shows promise for THz biosensing due to its unique photonic properties.
• Improving sensor sensitivity and specificity is key for clinical applications.

Purpose of the Study:

• To optimize black phosphorus-based terahertz biosensors for enhanced cancer biomarker detection.
• To investigate the influence of external magnetic fields and laser light on sensor performance.
• To develop stable and reproducible prototypes for selective protein identification in cancer cells.

Main Methods:

• Fabrication and characterization of black phosphorus-based terahertz biosensors.
• Optimization of sensor design for improved interaction with terahertz waves.
• Application of external magnetic fields and a 455 nm continuous-wave laser to modulate cellular responses.
• Evaluation of sensor sensitivity, specificity, stability, and reproducibility.

Main Results:

• Optimized black phosphorus sensors demonstrate enhanced sensitivity and specificity for cancer biomarkers.
• Externally applied magnetic fields significantly augmented cellular responses to THz waves (10%-80% increase over light fields).
• Prototypes were successfully developed for selective identification of cancer-associated proteins.
• Improved sensor stability and reproducibility were achieved.

Conclusions:

• Optimized black phosphorus terahertz biosensors show significant potential for early cancer diagnosis and treatment monitoring.
• The synergistic effect of magnetic fields and THz waves enhances biosensing capabilities.
• These advancements pave the way for robust and reliable clinical application of THz biosensing technology.