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This paper reports the fabrication of gold‐patterned microarray chips for fast and ultrasensitive surface enhanced Raman scattering (SERS) detection of trace samples. By micro‐nano machining based on electron‐beam lithography, magnetron sputtering, and chemical modification, gold‐patterned microarray chips with hydrophilic and hydrophobic periodic structures are fabricated, and a polyethylene glycol...
A simple and efficient pen‐on‐paper approach is designed to prepare hydrophilic surface enhanced Raman scattering (SERS)‐active lines by directly writing on a piece of hydrophobic poly (L‐lactic acid) nanofibrous paper using a pen filled with plasmonic nanoparticle ink. The pen‐on‐paper‐line SERS substrate exhibits hydrophobic–hydrophilic focusing effects together with negligible background interference,...
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