“…In recent years, various types of nanostructured forms of crystalline silicon (Si) have been intensively studied for application in technology and biomedicine, including for the diagnosis and therapy of various diseases [1,2]. Porous Si [3,[4][5][6][7], silicon nanowires [8], and nanoparticles (NPs) obtained from them [9], as well as laser-ablated Si NPs [2,10] and nanoparticles obtained from porous c-Si [11], have a great potential of unique physical and chemical properties for application both in tumor therapy [1,2,4,9] and as contrast agents for bioimaging [8,10,11].…”