0038-1101/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.sse.2012.09.008 ⇑ Corresponding author. Tel.: +1 301 405 3735. E-mail address: [email protected] (W. Zhao). All energy-harvesting schemes require some form of ‘‘intermediate’’ storage – batteries or capacitors that reservoir energy harvested from the environment. There are a number of reasons for this requirement. Ambien...

Energy is a valuable resource in wireless communication, navigation and sensor nodes. Maintenance and replacement of batteries in battery-driven nodes may not be possible, cost-effective or suitable for many applications. On the other hand, energy harvesting provides sustainable and independent operation with very long life-time but usually with unregulated power flow. The design approaches in ...

We have demonstrated sound-wave-driven nanogenerators using both laterally bonded single wires and vertically aligned nanowire arrays for energy harvesting in the frequency range of 35-1000 Hz. The electricity produced by the single wire generator (SWG) is linearly proportional to the input acoustic energy, while the frequency does not affect the performance of the SWG in this study. By infiltr...

In this paper, we introduce a novel printed monopole antenna for ultra-wideband (UWB) applications. The antenna is composed of two overlapped circular disc monopoles with a finite ground plane and fed by a 50 microstrip line. The designed antenna operates over impedance bandwidth (2.9 to 11.6GHz) for return loss S Ω 11 < -10dB. The antenna also shows omni-directional radiation patterns and good...

The concept of “energy harvesting” is to design smart systems to capture the ambient energy and to convert it to usable electrical power for supplying small electronics devices and sensors. The goal is to develop autonomous and self-powered devices that do not need any replacement of traditional electrochemical batteries. Now piezoelectric cantilever structures are being used to harvest vibrati...

The process of capturing the energy from a system’s environment or surrounding and converting it into usable electrical energy is termed as energy harvesting. One form of energy harvesting is to employ piezoelectric materials to harvest energy from vibrating structures. These materials have the ability to absorb the mechanical energy and transform it into electrical energy that can be used to p...

The most common harvesting method of Lycium barbarum L. (L. barbarum) is manual harvesting, resulting in low efficiency and high cost. Meanwhile, the vibration which considered an efficient mechanical method, can be significantly improved if optimized resonance frequency shrub obtained. To harvest fruit efficiently, a 3D model was established based on measurements shape parameters, material mec...