Surface-enhanced Raman scattering (SERS) is a kind of analysis technology based on sensing materials, which that can be used to in-situ study the biological metabolism of cells . The studyhasfound that silver (Ag) material can produce extremely strong SPR, resulting in a SERS signal intensity generated on the surface of nano-Ag 2-3 orders of magnitude higher than that of signal intensity generated on surface of nano-gold (Au). However, due to itspoor antioxidant and biocompatibility, biochemical SERSapplication ofnano-Ag with the low cost, ultra-high SPRstill has obstacle.

To solvethis problem, Chen Dongzhen,memberof Prof.He Xinhai’s research group at the School of MaterialsScience &Engineering, and Prof.Song Zhongxiao’s research group of Xi’an Jiaotong University developed a porous Ag@Ta film with electromagnetic field enhancement and light transmission synergistic amplification effect.At the same time the poor oxidation resistance and poor biocompatibility of nano-Ag has also been solved in this study.Theresearch results were published in the international authoritative journalACS Applied Materials & Interfacewith the title ofTa@Ag Porous Array with High Stability and Biocompatibility for SERS Sensing of Bacteria.

ACS Applied Materials & Interfaceis a significant journal in the field of engineering materials science, SCI area one, with an impact factor of 8.456. The first author of the paper is Chen Dongzhen, andthe School of MaterialsScience &Engineeringof XPUis the first unit. The cover of this thesis was co-authored by Dr. Chen Dongzhen and graduate student Zhang Liang. This work was supported by funding for doctoral research atXPU. Link to the paper: https://pubs.acs.org/doi/10.1021/acsami.0c03630.