During the last decade, there has been considerable interest of researchers towards the use of two-dimensional (2D) materials for the electronic device implementations. The main driving force is the improved performance offered by these 2D materials for electronic device operation in nano-scale regime. Among these 2D material, silicene (the 2D of silicon) has emerged as preferred choice because of its expected integration with silicon based technology. This expected integration of silicene with silicon technology is one of the primary advantages of silicene as a material for future electronic devices with the availability of infrastructure of bulk silicon for its processing. Silicene in its basic form is a conductor due to the zero bandgap formation and therefore several techniques have been given in the open literature for forming the band gap in silicene. Besides, silicene has been used to design several electronic devices ranging from transistors to photodetectors. In this paper, a review of silicene is presented considering a) the features/properties offered by it, b) the methods employed for the generation of its bandgap, c) different types of field effect transistors (FETs) reported on silicene, and d) spintronic applications of silicene.

Both tungsten (W) and platinum (Pt) are materials of interest in modern science and technology. Here, in this paper, we report the growth of multi-walled carbon nanotubes (MWCNTs) by thermal chemical vapour deposition (CVD) on Pt–W catalyst with MgO as a support material. The XRD studies were used to determine the structural characteristic of the as-prepared catalyst. Raman spectroscopy studies confirm the growth of MWCNTs with less structural defects and non-crystalline carbonaceous products. The images of field scanning electron microscope (FESEM) show that the grown network of carbon nanotubes (CNTs) contains less impurities, whereas the high-resolution transmission electron microscope (HRTEM) images indicate that the grown MWCNTs have good crystallinity with no lateral carbon deposit. TGA of the unpurified CNT product shows the addition of catalyst particles with the sample. This study will pave way for the new research area in the synthesis of CNTs and their applications in the electronic industry. Moreover, the results were compared with the previously reported results in the literature.