Chattopadhyay S.Lo H.C.Chen K.H.Hsu C.H.Chen L.C.LI-CHYONG CHEN2022-08-092022-08-09200302729172https://www.scopus.com/inward/record.uri?eid=2-s2.0-2442521352&doi=10.1557%2fproc-788-l2.5&partnerID=40&md5=946c110ea66b16faf719e91bb80b06f8https://scholars.lib.ntu.edu.tw/handle/123456789/616411Silicon nanotips, grown via electron cyclotron resonance plasma chemical vapour deposition, with apex diameters of ∼2nm and lengths of 1000 nm and densities of 1011/cm2 were used as a new substrate for surface enhanced Raman spectroscopy. Ion beam sputtered gold and silver self assemble on these substrates as nanoparticulates of 4-10 nm diameter and these metallic nanoparticulates assist in the surface enhancement of Raman signals of analytes. Molecules such as Rhodamine 6G and bis-Pyridyl ethylene of varied concentrations, in the range of 10-6-10-10 M, has been studied on these substrates and enhancements in the range of 10 6-108 were observed.Chemical vapor deposition;Cyclotron resonance;Ethylene;Gold;Raman scattering;Raman spectroscopy;Self assembly;Silicon;Silver;Substrates;Nanoparticulates;Nanotips;Surface enhanced Raman active substrates;Nanostructured materialsconference paper10.1557/proc-788-l2.52-s2.0-2442521352