In this paper, a bio-inspired bending actuator was designed and fabricated using piezoelectric patches and cantilever-shaped beam for controlling nose shape. The aim of this study is to investigate the use of the bending actuator. PZT and single crystal PMN-PT actuators were used to generate translational strain and shear stress. The piezoelectric patches were attached on the clamped cantilever...

Integrating III–V gain elements in the silicon photonics platform via selective area heteroepitaxy (SAH) would enable large-scale and low-cost photonic integrated circuits. Here, we demonstrate antiphase boundary (APB)-free gallium arsenide (GaAs) microridges selectively grown on flat-bottom (001) (Si) inside a recess. This approach eliminates need for etching patterned Si to form trapezoid or ...

Abstract: To cure imperfections such as low accuracy and the lack of ability to nucleate hole in the conventional level set-based topology optimization method, a novel method using a trapezoidal method with discrete design variables is proposed. The proposed method can simultaneously accomplish topology and shape optimization. The finite element method is employed to obtain element properties a...

Water flow in open channels is always subject to the resistance to flow and energy dissipation. For design purposes, one of the needed variables is the hydraulic resistance coefficient. For this mean, the influence of cross-sectional shape together with secondary flow cells and lateral distribution of true boundary shear stress have not yet been fully explored. This paper surveys the number of ...

Abstract This research paper exhibits the design of a V-shaped cantilever beam as micro Energy Harvester (EH) having Piezoelectric (PZT) its energy source for biomedical applications. PZT based materials have ability to convert mechanical into electrical energy. Low-power devices mostly operate using (i.e. batteries). But batteries are treated bio-hazard due massive use To overcome this toxic b...

This study explores heat diffusion effects inmicro-channel heat sinks intended for electronic cooling applications. Detailed analytical models are constructed for heat sinks havingmicro-channels with rectangular, inverse trapezoidal, triangular, trapezoidal, anddiamond-shaped cross sections. Solutions are presented for both monolithic heat sinks and heat sinks with perfectly insulating cover pl...

Dynamic models of structural and acoustic systems are usually obtained by means of either modal analysis or finite element modeling. Detrimentally, both techniques rely on a comprehensive knowledge of the system’s physical properties. As a consequence, experimental data and a nonlinear optimization are required to refine the model. For the purpose of control, system identification is often empl...

This paper presents a design of trapezoidal microstrip patch with T-shaped slot.Trapezoidal patch is designed on a FR4 substrate having relative permittivity of 4.4and loss tangent of 0.0013.The substrate is having thickness of 1.6mm at which a trapezoidal patch antenna with Tslot has been introduced in this paper.The selection of design is based upon the dimension and location giving a better ...

In this paper a model of oil depletion is analyzed in which the shapes of field profiles are triangular and the sizes of successive fields decrease monotonically. It is shown that the curve representing the rate of production for this model is piecewise linear and concave up to a certain point after which it is monotone decreasing. Equations for natural smooth approximating curves having unique...