Bìa tạp chí



Fabrication and study of Raman signal enhancement of pyramid/nano-Ag structured Silic substrate

Dau Tran Anh Nguyet Van Vo Kim Hieu Tran Thi Thanh Van Huynh Nguyen Thanh Luan
Received: 03 Nov 2020
Revised: 08 Feb 2021
Accepted: 08 Feb 2021
Published: 31 Mar 2021

Article Details

How to Cite
Dau Tran Anh Nguyet, Van Vo Kim Hieu, Tran Thi Thanh Van, Huynh Nguyen Thanh Luan. "Fabrication and study of Raman signal enhancement of pyramid/nano-Ag structured Silic substrate". Vietnam Journal of Food Control. vol. 4, no. 1, pp. 62-72, 2021

Main Article Content


The pyramid-structured silicon substrate was successfully fabricated by a chemical corrosion method with an average thickness of about 1 - 3 μm with the optimal parameters such as corrosion temperature of 70oC, corrosion time of 5 min, concentration KOH of 3 M and isopropyl alcohol concentration of 1 M. After that, the silver nanoparticles layer (thickness 20 nm) was coated on the silicon substrate by a sputtering method to enhance the SERS signal. The results proved that the Pyramid/nano Ag structure silicon substrate showed the enhancement effect of Raman signal, and Rhodamine 6G pigment in food at low concentration (10-6 M) was detected and the enhancement factor was 9.7 × 102.


Ag@PSi, PSi, Raman, SERS, Silic substrate


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