The development and growth of microfluidics has been mainly based on various novel fabrication techniques for downsizing and integration of the micro/nano components. Especially, an effective fabrication technique of three-dimensional structures still continues to be strongly required in order to improve device performance, functionality, and device packing density because the conventional lami...

Microchannel-patterned starch-poly(capro-lactone)/hydydroxyapatite (SPCL-HA) and starch-poly(lactic acid) (SPLA) composite membranes were produced for use as a laminated tissue-engineering scaffold that incorporates both physical and biochemical patterns. For this purpose, SPCL (30% starch) blended with inorganic hydroxyl apatite (50%) and SPLA (50% starch) membranes were made with compressive ...

This paper presents experimental results from a prototype of a microchannel heat exchanger used in a residential air-conditioning system as an air-cooled condenser. The main objectives were to analyze effects of the microchannel condenser on system performance. The commercially available system that utilizes a condenser with a round tube and plate fins was experimentally evaluated first, then t...

All-aluminum microchannel heat exchangers have recently gained popularity in the heating, ventilation, and air conditioning industry. Despite their attractive thermal performance design, these make coils used automotive, commercial, residential applications prone to crevice corrosion. This study uses high-fidelity conjugate transfer simulations model a micro channel exchanger system that includ...

We investigate a mathematical model describing the flow of a liquid in a microchannel. The model incorporates immersed objects in the fluid as well as fixed obstacles and boundaries of the microchannel. Objects can have different elastic properties, including solid objects and deformable objects. The flow description accounts for all types of mechanical interactions: fluid-object, object-object...

We demonstrate a novel concept for a position sensitive microchannel plate detector. This detector provides sub-millimeter spatial resolution by examining the signal induced on a wire harp by the electron cloud from a microchannel plate detector. Wires in the harp are efficiently read out by coupling them to a delay line.

The research community is experiencing a revolution in microscale and nanoscale heat transfer, with a focus on developing fundamental experiments and theoretical techniques. More recently, these advancements have begun to influence the design of electronic systems. A futuristic electronic cooling solution might include high efficiency thermoelectric devices made from nanomaterials for the cooli...

Without any approximation, this paper presents a numerical analysis of full Poisson-Nernst-Planck equation to investigate periodical potential and ion transport in microchannel under an AC electric field perpendicular to a wall in broad frequency range. Numerical solutions indicate that behavior of periodical potential and ion concentration oscillation strongly depend on frequency. The study fo...

In this work, slip flow of helium gas has been studied in a three dimensional rectangular microchannel heat sink with 11 microchannel and 10 rectangular fins. Helium gas flow is considered ideal and incompressible. The finite volume method with using coupled algorithm is employed to carry out the computation. To validate the present work, comparison with numerical and experimental studies is do...

Medical cyber-physical systems (MCPSs) extend the notion of conventional medical devices to more complex technical systems in close connection to humans, e.g., acquiring sensor data, controlling a treatment, or monitoring recovery. Typically, these systems include the patient in the loop and require a high degree of dependability and fail safety. One challenge is the complex nature of physiolog...