Substrate Flexibility and Metal Deposition Method Effects on Piezoelectric-Enhanced SERS in Metal–ZnO Nanorod Nanocomposites
Nguyen Thi Quynh Nhu, Le Tran Thanh Thi, Le Vu Tuan Hung, Vincent K. S. Hsiao
TL;DR
This paper explores how flexible substrates and metal deposition methods affect the performance of piezoelectric-enhanced SERS sensors using ZnO nanorods.
Contribution
The study establishes quantitative structure–property relationships in piezoelectric-enhanced SERS and provides design principles for flexible sensors.
Findings
Flexible substrates produced ZnO nanorods with smaller diameters and higher density, enhancing piezoelectric responsiveness.
Ag-ZnO nanocomposites achieved superior SERS detection limits (10−9 M R6G) compared to Au-ZnO.
Mechanical bending of flexible substrates significantly enhanced SERS signals, confirming piezoelectric enhancement mechanisms.
Abstract
This study investigates the effects of substrate flexibility and metal deposition methods on piezoelectric-enhanced Surface-Enhanced Raman Scattering (SERS) in metal-deposited ZnO nanorod (NR) nanocomposites (NCPs). ZnO NRs were grown on both rigid (ITO–glass) and flexible (ITO-PET) substrates, followed by gold (Au) deposition by pulsed-laser-induced photolysis (PLIP) or silver (Ag) deposition by thermal evaporation. Structural analysis revealed that ZnO NRs on flexible substrates exhibited smaller diameters (60–80 nm vs. 80–100 nm on glass), a higher density, and diverse orientations that enhanced piezoelectric responsiveness. Optical characterization showed distinct localized surface plasmon resonance (LSPR) peaks at 420 nm for Ag and 525 nm for Au systems. SERS measurements demonstrated that Ag-ZnO NCPs achieved superior detection limits (10−9 M R6G) with enhancement factors of…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsGold and Silver Nanoparticles Synthesis and Applications · Photoacoustic and Ultrasonic Imaging · Retinal and Optic Conditions