Glucose sensing research based on polymer/metal composite metamaterials
Based on the artificial surface equipartition excitation effect,a method for enhancing terahertz biomolecular sensing based on polymer/metal composite metamaterials is proposed. Preparation of polymer/metal composite metamaterials is completed by femtosecond laser in-situ rapid processing. Polymer substrates with low dielectric constants significantly enhance the electromagnetic response intensity of biomolecular-terahertz-surface microstructures. High sensitivity detection of glucose markers is achieved. The results show that the Q value of the metamaterial is up to 4.11 and the sensing sensitivity is 4.1 THz/(mol·L-1 )for glucose solutions in the concentration range of 2～10 mmol/L. The lower limit of detection is 0.085 mmol/L. It demonstrates the application potential of terahertz metamaterial biosensors in the detection of diabetes markers.
万方数据
维普
