In this paper we propose a novel method of realizing discrete-time (D-T) signal amplification using NanoElectro-Mechanical (NEMS) devices. The amplifier uses mechanical devices instead of traditional solid-state circuits. The proposed NEMS-based D-T amplifier provides high gain and operate on a wide dynamic range of signals, consuming only a few micro watts of power. The proposed concept is sub...

SiC is a candidate material for microand nano-electromechanical systems (MEMS and NEMS). In order to understand the impact that the growth rate has on the residual stress of CVDgrown 3C-SiC hetero-epitaxial films on Si substrates, growth experiments were performed and the resulting stress was evaluated. The film thickness was held constant at ~2.5 μm independent of the growth rate so as to allo...

We carry out molecular statics (MS) simulations to study the indentation process of Pt (1 1 1) surfaces using an indenter with radius 5–20 nm. The substrate and are either bare or graphene-covered. Our show that influence adhesion between tip can be significantly reduced by decreasing strength range atoms on indenter, enhancing stiffness. results suggest elastic response exhibits weaker after c...

The use of electrostatic forces to provide actuation is a method of central importance in microelectromechanical system (MEMS) and in nanoelectromechanical systems (NEMS). Here, we study the electrostatic deflection of an annular elastic membrane. We investigate the exact number of positive radial solutions and non-radially symmetric bifurcation for the model −∆u = λ (1− u)2 in Ω, u = 0 on ∂Ω, ...

Non-linearities play an important role in microand nanoelectromechanical system (MEMS and NEMS) design. In common electrostatic and magnetic actuators, the forces and voltages can depend in a non-linear way on position, charge, current and magnetic flux. Mechanical spring structures can cause additional nonlinearities via material, geometrical and contact effects. For the design and operation o...

Nanotechnology literally means any technology done on a nanoscale that has applications in the real world. Nanotechnology encompasses production and application of physical, chemical and biological systems at scales ranging from individual atoms or molecules to submicrometre dimensions, as well as the integration of the resulting nanostructures into larger systems. Nanotechnology is likely to h...

In this study, a semi analytical method for transverse and axial vibration of single-walled boron nitride nanotube (SWBNNT) under moving a nanoparticle is presented. The surrounding elastic medium as Pasternak foundation and surface stress effect are included in the formulations of the proposed model. Using Timoshenko beam theory (TBT), Hamilton’s principle and nonlocal piezoelasticity theory, ...

The aim of this article is to analyze nonlinear electro-magneto vibration of a double-piezoelectric composite microplate-system (DPCMPS) pursuant to the nonlocal piezoelasticity theory. The two microplates are assumed to be connected by an enclosing elastic medium, which is simulated by the Pasternak foundation. Both of piezoelectric composite microplates are made of poly-vinylidene fluoride (P...

OBJECTIVE To evaluate implementation of the National Essential Medicines Scheme (NEMS) in rural China. METHODS Two rural counties/districts in each of three provinces where NEMS had been implemented were surveyed. Information was collected from NEMS staff at the province, county/district, township and village levels; patients with chronic disease were also interviewed. Service provision, fina...

Since the beginning of the 60’s, Microelectronics has played an important role in practically all the technological fields and knowledge areas. Microelectronics is known for being the area of technology associated to very small electronic systems and devices. These devices are made from semiconductor materials, typically silicon, and they are mainly composed of integrated electronic parts on a ...