this review reports recent advances in metallic nanostructures based electrochemical sensors. interesting aspects of nps include size and shape-dependent interatomic bond distances, melting points, chemical reactivity, and optical and electronic properties. the small size of metallic nanostructures has allowed nanoscale electrochemical processes to be probed. electrochemical characteristics can...

Abstract Silver-doped zinc oxide nanostructures (Ag/ZnO NSs) with Ag content of 0 wt%, 5 10 and 20 wt% were synthesized using a hydrothermal technique. The prepared annealed at 500 °C for 2 h. samples characterized by scanning electron microscopy, FTIR, X-ray diffraction (XRD), electrical conductivity. FTIR spectra confirms the presence hydrogen-related shallow donor defects in Ag/ZnO NSs, whic...

Nanosphere lithography (NSL) is a cost- and time-effective technique for the fabrication of well-ordered large-area arrays nanostructures. This paper reviews technological challenges in NSL mask preparation, its modification, quality control. Spin coating with various process parameters (substrate wettability, solution properties, spin operating parameters) are discussed to create uniform monol...

A variety of patterns of well-ordered perovskite-type complex oxide nanostructures were obtained by pulsed laser deposition (PLD) on conductive single crystalline substrates through latex sphere monolayer and double-layer masks. Patterns obtained via deposition through hexagonally close packed (hcp) latex sphere monolayers include the usual arrays of hexagonally ordered nanoislands, hexagonal a...

The control over the configuration, size, and density of Au nanoparticles (NPs) has offered a promising route to control the spatial confinement of electrons and photons, as a result, Au NPs with a various configuration, size and density are witnessed in numerous applications. In this work, we investigate the evolution of self-assembled Au nanostructures on 4H-SiC (0001) by the systematic varia...

The formation of high-density zinc oxide (ZnO) nanorods on porous silicon (PS) substrates at growth temperatures of 600–1000 °C by a simple thermal evaporation of zinc (Zn) powder in the presence of oxygen (O2) gas was systematically investigated. The high-density growth of ZnO nanorods with (0002) orientation over a large area was attributed to the rough surface of PS, which provides appropria...

In this work, zinc oxide (ZnO) nanostructures were synthesized by using zinc chloride and sodium hydroxide as the precursors at different temperatures. The ZnO nanostructures obtained were characterized by X-ray diffraction (XRD), Scanning Electronic Microscopy (SEM), Energy Dispersive X ray Spectroscopy (EDAX).The ZnO powders have hexagonal wurtzite structure and nanometricsized crystallites. ...

T materials have drawn tremendous attention in the recent past in terms of both interesting fundamental physics and possible applications in future generation devices. Graphene and hexagonal boron nitride (h-BN) are the two most promising candidates for this purpose. 3 Single layers of graphene and h-BN have been fabricated and found to be stable at room temperature. 8 The most significant diff...