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Abstract-Mixing of two fluid is an essential process for most of microfluidic device such as Lab-On-Chip (LOC) device. Mixing performance in this microsystem mainly relies on effective and rapid mixing of sample and reagent. Therefore, the development of oblique groove micromixer for application of blood and reagent mixing has been carried out. In this study, two types of fluids are involve in the mixing, which are the blood and reagent. Two mixer namely Y-Shape mixer and Y-Shape oblique groove mixer are designed and simulated using CoventorWare2010 software at low Reynolds number. The development of oblique groove micromixer are obtained by analyzing the geometries effect of groove pattern on mixing performance. In this study, it has been demonstrated that the YShape mixer with the oblique groove structure located at the floor of the mixing channel can increase the mixing performance. Thus, the simulation result in this study shows that mixing performance can be enhanced when depth and width of oblique groove having 40% of the channel width with the angle of oblique groove is 45º.

<span>Recent advancement in renewable-grid integration research, due to the concern on the environmental impact, leads to extensive study in isolated power converter as their interface. As part of isolation capability in power converter interface, extensive study of magnetic component has been carried out, especially on the design, construction and optimisation to achieve optimal operation. One of the main issue in verifying the analytical power loss model is to have independent HVDC link power source for an experimental validation work. This paper focus on the design and construction of DC link source, to be use in the experimental rig setup. Several DC link source option has been evaluated, and TDK-lambda PF500-360A power supply was selected due to the availability and excellent energy efficiency offered, at better price. External circuit is designed and implemented to achieve desired voltage and current supply characteristic. At the end, the voltage and current of the DC link supply for Dual H-bridges is obtained and shown promising result for experimental rig measurement and data collection work.</span>

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