Beam splitters are widely used in various optical systems, but traditional beam bulky and heavy, which not conducive to the integrated utilization of devices. Metamaterials have attracted extensive attention as a kind miniature artificial materials, there been many works on design metasurface splitters. Using metasurfaces, multiple functions can be achieved. Meanwhile, advantages small size, ea...

A method for suppressing residual vibrations in flexible systems is presented and experimentally demonstrated. This method is based on the preconditioning of the inputs to the system using Infinite Impulse Response (IIR) digital filters. The proposed method is robust to variations of the system dynamic parameters and simple to implement in practice. The method is experimentally verified using a...

The tolerance study is one of the most critical and neglected issues in sheet metal assembly manufacturing research. The fundamental shortcoming of currently existing tolerancing methods is the lack of physical significance of the model. This paper presents a new tolerance analysis methodology for sheet metal assembly based on physical/functional modeling of the fabrication error using the deve...

In the pursuit of ultrasmall electronic components, monolayer electronic devices have recently been fabricated using transition-metal dichalcogenides. Monolayers of these materials are semiconducting, but nanowires with stoichiometry MX (M = Mo or W, X = S or Se) have been predicted to be metallic. Such nanowires have been chemically synthesized. However, the controlled connection of individual...

* Author of correspondence, Phone: (864) 656-5642, Fax: (864) 656-4435, Email: [email protected]. ABSTRACT A Lyapunov-based control strategy is proposed for regulating problem of a Cartesian robot manipulator, which is modeled as a flexible cantilever beam arm with a translational base support. The arm cross-sectional area is assumed to be uniform and Euler-Bernoulli beam theory assumptions ar...

Ride quality is concerned with the feel of the passenger in the environment of a moving vehicle. It is one of the key indices in determining comfort levels of a vehicle. Although, “ride comfort” evaluation is subjective in nature, researchers have developed mathematical models to study and evaluate vehicle ride performance. Some popular models for vehicle ride analysis are – quarter car model, ...

We show that planar nanopatterned thin films on standard polycarbonate (PC) compact discs (CD) can be micro-shaped in a non-contact manner via direct e-beam exposure. The shape of the film can be controlled by proper selection of the e-beam parameters. As an example of application, we demonstrate a two-dimensional (2D) array of micro-lenses/reservoirs conformally covered by an Al 2D nanohole ar...

The ability to actively control the perceived color of objects is highly desirable for a variety of applications, such as camouflage, sensing, and displays. We report a completely new flexible, high-contrast metastructure (HCM) whose color can be varied by stretching the membrane. This is accomplished by annihilating the 0th order diffraction while enhancing the -1st order, a new phenomenon mad...

This research is aimed at investigating the elastic buckling strength of I-beam cantilevers. In section classification and in design both, understanding load that beam can withstand without loss stability crucial, especially determining correct method analysis. The divided into segments which are investigated separately as plates. A novel approximation for plates with flexible boundary conditio...

Abstract: This research presents an investigation into the development of system identification using intelligent algorithms. A simulation platform of a flexible beam vibration using finite difference (FD) method is used to demonstrate the capabilities of the identification algorithms. A number of approaches and algorithms for system identifications are explored and evaluated. These identificat...