Extremely Sensitive SERS Sensors Based on a Femtosecond Laser-Fabricated Superhydrophobic/-philic Microporous Platform

• DOI: 10.1021/acsami.2c10381
• Publication Date: 2022-09-14T06:48:03Z
• Authors: Jian Yu; Jiangen Wu; Huan Yang; Pei Li; Jing Liu; Meng Wang; Jihong Pang; Chunbo Li; Can Yang; Kaichen Xu
• Keywords: Rhodamine 6G

The detection of molecules from highly diluted solutions with a limited amount is vital for precancer diagnosis, food safety, and forensic analysis. sensitivity convenience techniques are the primary concerns. In this study, hybrid superhydrophobic/-philic (SH/SHL) microporous platform designed fabricated by femtosecond laser to improve surface-enhanced Raman scattering (SERS) performances. Relying on micropores at center SHL patterns, sediments distributed central regions avoided, leading further enrichment target molecules. engineered high identification speed tests, SERS substrate shows an advantage in outdoor handheld automated inspection applications. optimized sensor sufficient attomolar-level (10-17 M) rhodamine 6G using analyte volumes just 5 μL, corresponding enhancement factor 5.19 × 1013. Meanwhile, relative standard deviation 7.48% 10-10 M excellent uniformity proposed platform. This work pushes forward practical applications technology ultratrace molecular detections.