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- W4207025392 abstract "Both surface‐enhanced Raman scattering (SERS) spectroscopy and microfluidics are increasing their presence in industry. The integration of SERS into microfluidic chips is relevant for label‐free biosensing and can expand the function of microfluidics to provide an efficient platform for on‐site biochemical analysis equipped with the powerful sensing capability of SERS. Herein, the design and industry manufacturing of reliable and cost‐effective disposable SERS microfluidic chips using high throughput technologies of injection molding and roll‐to‐roll are demonstrated. The SERS microfluidic chip is made of cyclic olein copolymers and of an ultrathin nanostructured polyethylene terephthalate foil covered by a plasmonic nanostructured Ag film, enabling Raman readout through it. This ultrathin plasmonic Ag‐coated PET layer overcomes the drawbacks of SERS through thick polymeric microfluidic cells, i.e., it avoids strong fluorescence signals interfering with the Raman measurements and avoids high working distances. The achieved SERS enhancement in the range 10 5 –10 6 is demonstrated by probing 100 nl of 1 M rhodamine and of 10 −12 m crystal violet with a > 90% reproducible signal, with large‐area uniformity on all the SERS area of 20 mm 2 and good stability of the signal over months. Therefore, this approach of SERS microfluidic chips provides an industrially viable customizable and cost‐effective route toward disposable, point‐of‐care diagnostic applications." @default.
- W4207025392 created "2022-01-26" @default.
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- W4207025392 date "2022-02-02" @default.
- W4207025392 modified "2023-09-26" @default.
- W4207025392 title "Paving the Way to Industrially Fabricated Disposable and Customizable Surface‐Enhanced Raman Scattering Microfluidic Chips for Diagnostic Applications" @default.
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- W4207025392 doi "https://doi.org/10.1002/adem.202101365" @default.
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