Light emission from semiconductors depends not only on the efficiency of carrier injection and recombination but also extraction efficiency. For ultraviolet emission from high band gap materials such as ZnO, nanowires have higher extraction efficiencies than thin films, but conventional approaches for creating a p-n diode result in low efficiency. We exploited the noncentral symmetric nature of...

This paper reports a miniaturized piezoelectric accelerometer suitable for a small haptic actuator array. The accelerometer is made with zinc oxide (ZnO) nanowire (NW) grown on a copper wafer by a hydrothermal process. The size of the accelerometer is 1.5 × 1.5 mm², thus fitting the 1.8 × 1.8 mm² haptic actuator array cell. The detailed fabrication process of the miniaturized accelerometer is i...

The effect of length variation on the magnetic properties of NiFe alloy nanowires electrodeposited into the alumina template was investigated. The diameter (45±2.5 nm) and length (~ 1.9, 7.12, 8.3, 9.5 and 13.3 µm) of the nanowires were estimated from scanning electron microscopy images. Energy dispersive spectroscopy results showed Ni3Fe7 composition of the alloy nanowire...

The main functional part of the supercapacitors and nanogenerators made up various types nanostructured materials. contemporary devices have been manufactured employing different kinds nanomaterials based on nanoflake nanowire structures. These hierarchical materials show high efficiency engineering electrodes for as well piezoelectric nanogenerators. Here, we successfully synthesized NiCo2O4 n...

coni nanowires were deposited by pulsed electrodeposition technique into porous alumina templates. the effect of off time between pulses (toff) and reductive/oxidative time (treduc/oxid) on the microstructure and magnetic properties of the coni nanowires were investigated. maximum coercivity and squareness were obtained for samples fabricated at treduc/oxid= 0.5 ms and toff =400 ms. the coerciv...

With an increasing demand for self-powered microelectronics to be used in scientific tasks and exploration missions extreme environments, the implementation of piezoelectric energy harvesting at high temperature is important research focus renewable sources. Piezoelectric composites made from ceramic fillers polymer matrices combine electromechanical coupling with flexibility, resulting a versa...

The polar and piezoelectric nature of the wurtzite structure ZnO nanowires with a high aspect ratio at nanoscale dimensions is interest for piezotronic devices, but number issues related to polarity are still open deserve particular attention. In this context, chemical bath deposition offers unique opportunity select O- or Zn-polarity resultant further compatible fabrication processes flexible ...