Mandrekar Pratiksha P, Kang Mingu, Park Inkyu, Kim Bumjoo, Yang Daejong
Department of Future Convergence Engineering, Kongju National University, Cheonan 31080, Republic of Korea.
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea.
Nanomaterials (Basel). 2023 Jan 25;13(3):486. doi: 10.3390/nano13030486.
Surface-enhanced Raman spectroscopy (SERS) has been transformed into a useful analytical technique with significant advantages in relation to sensitive and low-concentration chemical analyses. However, SERS substrates are expensive and the analyte sample preparation is complicated; hence, it is only used in limited areas. We have fabricated a tattoo paper-based SERS substrate by using non-complicated inkjet printing. The sensitivity of the SERS substrate was increased by removing the carbon residues via exposure to ultraviolet light without damaging the substrate. Thus, low concentrations of pesticides (up to 1 μM thiram) were measured. The SERS substrate was attached to the curved surface of an apple to demonstrate its advantages, such as the flexibility and easy attachability of tattoo paper, and its feasibility was verified by measuring 1 μM thiram on the apple's surface. Due to its economic cost, simple usage, and rapid measurement, it will be helpful for the identification of both agricultural adulterants and food adulterants and for water-based pollutant detection. It will also possibly be helpful for medical purposes related to human body surfaces in the future.
表面增强拉曼光谱（SERS）已转变为一种有用的分析技术，在灵敏的低浓度化学分析方面具有显著优势。然而，SERS 基底昂贵且分析物样品制备复杂，因此仅在有限领域使用。我们通过使用不复杂的喷墨印刷制造了一种基于纹身纸的 SERS 基底。通过暴露于紫外光去除碳残留物而不损坏基底，提高了 SERS 基底的灵敏度。因此，可以测量低浓度的农药（高达 1 μM 的福美双）。将 SERS 基底附着在苹果曲面上以展示其优势，如纹身纸的柔韧性和易于附着性，并通过测量苹果表面 1 μM 的福美双验证了其可行性。由于其经济成本低、使用简单且测量快速，它将有助于识别农业掺假物和食品掺假物以及检测水基污染物。未来它也可能有助于与人体表面相关的医疗用途。
