In this study, a periodic zigzag channel with rectangular cross-section has been used in order to obtain a high-efficiency system for cooling a polymer electrolyte fuel cell. An appropriate function of fuel cells and enhancement of their lifetime require uniform temperature conditions of around 80°C. On the other hand, due to volume and weight constraints, a low-density compact heat exchanger i...

In this paper, we propose a deadlock-free wormhole routing scheme called the Zigzag routing for the panMesh, which generalizes the mesh topology. Accordingly, we prove that only two virtual channels are needed for deadlock-freeness on every physical channel by using the Zigzag routing.

A polymer microchannel chip with a symmetrical or unsymmetrical zigzag-side-walled structure was fabricated by an imprinting method, and applied to study shape effects on solution flow characteristics as well as on the liquid/liquid extraction efficiency of an aluminium(III) chelate complex (Al-DHAB: DHAB = o,o'-dihydroxyazobenzene) in a microchannel chip. In an unsymmetrical zigzag-side-walled...

Reasonable flow channel designs play a significant role in improving the performance of proton exchange membrane fuel cells (PEMFC). The effect zigzag channels with three different numbers turns on PEMFC was investigated this paper. polarization curves, molar concentration oxygen and water, power density were analyzed, numerical results showed that overall significantly better than conventional...

We will present brief overview on the electronic and transport properties of graphene nanoribbons focusing on the effect of edge shapes and impurity scattering. The low-energy electronic states of graphene have two non-equivalent massless Dirac spectrum. The relative distance between these two Dirac points in the momentum space and edge states due to the existence of the zigzag type graphene ed...

In the study, the thermal-hydraulic performance of the zigzag channels with circular cross-section was analyzed by Computational Fluid Dynamics (CFD). The standard K-Ꜫ turbulent scalable wall functions were used for modeling. The wall temperature was assumed constant 353 K and water was used as the working fluid. The zigzag serpentine channels with bend angles of 5 - 45° were studied for turbul...

We report a microfluidic molecular combing device to trap, stretch, and separate DNA at a singlemolecule resolution. In order to align long DNA into a single direction on surface, we demonstrated molecular combing by dewetting DNA solution inside a microfluidic channel. It used a surface tensional force at the air-water interface of DNA solution translating on a fabricated pattern (zigzag line)...

We study the transport properties of disordered electron systems that contain perfectly conducting channels. Two quantum network models that belong to different universality classes, unitary and symplectic, are simulated numerically. The perfectly conducting channel in the unitary class can be realized in zigzag graphene nano-ribbons and that in the symplectic class is known to appear in metall...

• Heat exchanger reactor prototypes are designed to study heat transfer in millimetric channels. coefficients zigzag channels 2 5 times higher than straight decreases when the channel cross section increases. A correlation is proposed for coefficient estimation performances of compact reactors were experimentally characterized and measurement uncertainties evaluated using derivation method. Pro...