作者: Charan Masarapu , Bingqing Wei
DOI: 10.1021/LA7012232
关键词:
摘要: Growth of aligned carbon nanotubes (CNTs) on electrically conductive substrates is promising for many applications; however, the lack complete understanding substrate effects CNT growth poses a lot technical challenges. Here, we report direct multiwalled (MWNTs) chemically treated stainless steel (Type 304) using chemical vapor deposition (CVD) process. A detailed X-ray photoelectron spectroscopy (XPS) analysis has been carried out various samples in order to better understand correlation between surface properties and MWNT growth. The XPS studies revealed that CNTs prefer grow enriched iron oxides obtained by treatment rather than passive chromium oxide films present as-received substrates. density alignment MWNTs could therefore be controlled tuning ratio through surfaces. On basis this method, selective patterns also demonstrated.