کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7213042 | 1469401 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transfer printing for preparing nanostructured PDMS film as flexible SERS active substrate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
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چکیده انگلیسی
Flexible surface enhanced Raman scattering (SERS) substrate would offer a highly sensitive and rapid means for detecting ultra-low concentration of analytes on an irregular surface, enabling its arising applications in wearable and wipeable devices. In this study, we launched a transfer printing method to fabricate a flexible and low cost SERS substrate with an ordered nanostructure. When polydimethylsiloxane (PDMS) is being applied onto self-assembled polystyrene (PS) nanoparticles (NPs) template, the flowability of PDMS solution during the curing process may better align the spacing among the PS NPs to form a closer packing, an outcome which provides a highly ordered nanostructure on the PDMS film. We developed a strategy for prompting a uniform Au nanoparticles (NPs) coating on the PDMS surface for further growing an Ag NPs layer. We successfully fabricated a flexible SERS substrate for testing analytes on a curved object to achieve high detection capability with enhancement factors at the order of â¼107 and well-posed reproducibility with deviation less than 13%. Our study could effectively implement flexible SERS practice and could be extended for future applications in flexible sensors and actuators.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 84, January 2016, Pages 222-227
Journal: Composites Part B: Engineering - Volume 84, January 2016, Pages 222-227
نویسندگان
Haoran Zhan, Fansheng Cheng, Yanqiu Chen, Ka Wai Wong, Jun Mei, David Hui, Woon Ming Lau, Yu Liu,