This paper details the development of an integrated AC electro-osmotic (ACEO) microfluidic pump for dilute electrolytes consisting of a long serpentine microchannel lined with three dimensional (3D) stepped electrode arrays. Using low AC voltage (1 V rms, 1 kHz), power (5 mW) and current (4.5 mA) in water, the pump is capable of generating a 1.3 kPa head pressure, a 100-fold increase over prior...

A novel cascade electro-osmotic pump (EOP) has been fabricated by alternately connecting a cation monolithic column and anion monolithic column in series. In this manner, the change of electric polarity between each stage of the cascade EOP is easily achieved and the pressure output of the EOP could be greatly enhanced without increase of the applied voltage.

The electro-hydraulic servo system (EHSS) has been demonstrated to be a promising choice for diverse applications due to its high-power density, ease of implementation, good dynamic performance and durability, despite the rapid development of electric power transmission. Owing to these characteristic, the EHSS has been widely used in the aircraft control, machine tools and manufacturing, excava...

Cardiovascular disease is one of the leading causes of death worldwide, in particular myocardial dysfunction, which may lead to heart failure eventually. Understanding the electro-mechanics of the heart will help in developing more effective clinical treatments. In this paper, we present a multi-scale electro-mechanics model of the left ventricle (LV). The Holzapfel-Ogden constitutive law was u...

We present here a possible high-flux photon-pair source constructed by single lithium niobate optical superlattice (OSL) with a combined quasi-periodically and periodically poled structure, which is from the principle of electrically induced parametric down conversion (PDC) after second-harmonic generation (SHG), predicted by the united theory developed in this paper, in which SHG, PDC and elec...

This summer, Dr. Greg Faris and I used new optical techniques to create a system for stimulated Rayleigh-Brillouin scattering measurements that will evolve into a microscopy system for biological applications. The system consists of a pump and a probe beam, which are modulated to different frequencies, amplitudes, and pulse lengths by acousto-optic (AOM) and electro-optic modulators (EOM). The ...

We have investigated parametric seeding of a microresonator frequency comb (microcomb) by way of a pump laser with two electro-optic-modulation sidebands. We show that the pump-sideband spacing is precisely replicated throughout the microcomb's optical spectrum, and we demonstrate a record absolute line-spacing stability for microcombs of 1.6 × 10(-13) at 1 s. The spectrum of a microcomb is com...

Growing need for a variety of micro electro-mechanical systems necessitates advances in manufacturing technologies for high volume production at low cost. In this study, a mechanical micro pump actuator will be modelled using MEMS module of COMSOL simulation tool. The micro pump actuator will be based on bimetallic actuation which in-turn is based on the difference in the thermal expansion coef...

This paper investigates 3D simulation of fluid flow in a centrifugal pump from the Detroit Diesel company to extract possible engine cooling trends.  The velocity and pressure profile of water, the coolant, is analyzed and the characteristic curves of the pump are derived. This provides a useful evaluation of the pump performance at all working conditions. For this aim, a computational fluid dy...

Single-frequency ultranarrow linewidth on-chip microlasers with a fast wavelength tunability play game-changing role in broad spectrum of applications ranging from coherent communication, light detection and ranging, to metrology sensing. Design fabrication such sources remain challenge due the difficulties making laser cavity that has an ultrahigh optical quality (Q) factor supports only singl...