Extracting energy from ambient vibration to power wireless sensor nodes has been an attractive area of research, particularly in the automotive monitoring field. This article reports the design, analysis and testing of a vibration energy harvesting device based on a miniature asymmetric air-spaced cantilever. The developed design offers high power density, and delivers electric power that is su...

the resonant frequency and sensitivity of an atomic force microscope (afm) cantilever with assembled cantilever probe (acp) have been analyzed and a closed-form expression for the sensitivity of vibration modes has been obtained. the proposed acp comprises an inclined cantilever and extension, and a tip located at the free end of the extension, which makes the afm capable of topography at sidew...

This study investigates the asset pricing implications of the V-shaped disposition effect, a newly-documented behavior pattern characterized by investors being more likely to sell a security when the magnitude of their gains or losses on it increases. I find that, on an aggregate level, stocks with both large unrealized gains and large unrealized losses outperform others in the following month....

In this article, we discuss an uncooled infrared IR detector based on an “arch-type” design realized with advanced microelectromechanical systems technology. Bimaterial microcantilevers undergo bending as their temperature changes due to the absorption of infrared photons. The bending is proportional to dissimilar thermal expansion of the two different materials composing the cantilever. We sel...

Flow Energy Harvesters (FEHs), equipped with piezoelectric active layers, are designed to extract energy from non-pulsating flows. FEHs featuring cantilevers tip-mounted Vibration Inducers (VIs) develop a galloping motion. In this paper, we present the modelling of recently introduced VI shape, semitubular-shaped winglets, which do not produce wake interacting cantilever. Such peculiarity allow...

This paper reports the extended design and simulation of a screen printed piezoelectric energy harvester. The proposed design was based on a previous credit card sized smart tag sensor node, and packages the power conditioning circuit in the free space above the tungsten proof mass layer. This approach enables electronic components to be mounted onto the cantilever beam. These are used to provi...

We report on a new wafer transfer technique that can remove and transfer surface-micromachined layers to application-specific substrates. This process, however, is not limited to only MEMS devices and can be applicable to other semiconductor devices. Successful transfer of a 1 cm x 1 cm MEMS chip with electrostatically actuated curled cantilever switches to a transparent quartz substrate has be...

The piezoelectric transduction mechanism is a common vibration-to-electric energy harvesting approach. Piezoelectric energy harvesters are typically mounted on a vibrating host structure, whereby alternating voltage output is generated by a dynamic strain field. A design target in this case is to match the natural frequency of the harvester to the ambient excitation frequency for the device to ...