研究目的
Investigating the fabrication of TiO2 nanowires using a unique VT-GLAD technique and their application in photodetection and glucose concentration detection.
研究成果
The VT-GLAD technique successfully fabricated TiO2 NWs clusters, and Ag NPs decoration enhanced photodetection. The device showed high UV sensitivity and efficient glucose concentration detection under white light, suggesting potential for non-invasive glucose sensing applications.
研究不足
The study's limitations include the high ideality factor indicating tunnelling through interface defects, variations in device resistance with contact position, and the need for standardization for glucose concentration measurement in other solutions.
1：Experimental Design and Method Selection:
The study employed a unique vapour transport cum glancing angle deposition (VT-GLAD) technique for fabricating TiO2 nanowires (NWs) and thermal evaporation cum GLAD technique for depositing Ag nanoparticles (NPs) on TiO2 NWs.
2：Sample Selection and Data Sources:
TiO2 NWs were grown on p-type Si (100) wafers, and Ag NPs were deposited on the NWs. Structural characterizations were performed using FESEM, TEM, and XRD.
3：List of Experimental Equipment and Materials:
Equipment included a customised vapour transport system, thermal evaporator, FESEM (ZEISS, Sigma), TEM (JEOL, JEM-2010), and XRD (Rigaku Smart Lab). Materials included TiO2 powder, Ag metal, and glucose (D+).
4：Experimental Procedures and Operational Workflow:
TiO2 NWs were grown on Si wafers, annealed, and then decorated with Ag NPs. Electrical characteristics and photoresponsivity were measured under dark and illuminated conditions.
5：Data Analysis Methods:
Data analysis involved calculating photosensitivity, responsivity, and glucose concentration detection using Beer-Lambert law.
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