Technical Description
The invention is a sequential maskless reactive ion etching (RIE) technique that produces flexible Surface Enhanced Raman Spectroscopy (SERS) substrates for trace-level detection of food adulterants. By executing multi-step gas etching sequences on spin-coated polydimethylsiloxane (PDMS) and grafting synthesized gold nanoparticles, it forces an in-situ capillary drying mechanism. This generates crack-free micro-wrinkles and nano-grass structures that create dense electromagnetic hotspots, enabling single-molecule event tracking at ultra-low Atto molar concentrations.
Problems Addressed
- Lower Detection Sensitivity
- Restricted Tracking Ranges
- Time-Consuming Sample Preparation
- Inability to Control Crack-free Wrinkle Variations
- High Equipment Costs and Stationary Limitations
Tech Features
- Sequential Maskless RIE Processing
- Plasmonic Ag-Nanoparticle PDMS Matrix
- Enhanced Raman Peak Signal
- Single-Molecular Level Detection Sensitivity(10⁻⁶ to 10⁻¹⁸ M)
- Physiochemical Skin Optical Tuning
- 7.5 × 10⁷ Enhancement Factor of Signal Intensity
- Portable Rapid Food Testing
- Stress-Controlled Structural Transitions
- ultra-dense 0.1 to 5 nm sensing junctions
Target Audience
- Food Safety & Field Testing
- Pharma QC & Clinical Bio-Labs
- Agrochemical & Environmental Monitoring
Tech ID: P20-2129 TRL 4 Patent Status: Published Available For Exclusive and Non-exclusive License
