Raman Signal Enhancement Tunable by Gold-Covered Porous Silicon Films with Different Morphology. - Svetlana N. Agafilushkina; Olga Zukovskaja; Sergey A. Dyakov; Karina Weber; Vladimir Sivakov; Jürgen Popp; Dana Cialla-May; Liubov A. Osminkina (Sensors, 2020)