This communication describes a highly stable ZnO/Ta2O5 photoanode with Ta2O5 deposited by atomic layer deposition. The ultrathin Ta2O5 protective layer prevents corrosion of ZnO and reduces surface carrier recombination, leading to a nearly two-fold increase of photo-conversion efficiency. The transparency of Ta2O5 to sunlight is identified as the main reason for the excellent stability of the ...

In the present study, problems of diffraction and radiation water waves by a cylindrical heaving wave energy converter (WEC) placed in front reflecting V-shaped vertical breakwater are formulated. The idea conceived is based on possible exploitation amplified scattered reflected potentials originating from presence breakwater, towards increasing WEC’s power absorption due to reflections. An ana...

In this paper, a photoelastic tactile transducer is modelled and analyzed using Finite-Element Analysis (F'EA). The effects of both normal and tangential forces are considered. Two different boundary conditions are examined for a transducer whose compliant protective layer has different mechanical properties from the photoelastic layer.

The effects of gap wave resonance on the performance a dual-floater hybrid system consisting an oscillating-buoy type energy converter (WEC) and floating breakwater are important for design such system. This paper investigates by employing two-dimensional numerical flume developed using Star-CCM + software. maximum elevation in WEC-breakwater were studied. influence WEC motion geometrical param...

This paper utilizes ANSYS-AQWA hydrodynamic simulation analysis software (2022 R2) to investigate the wave dissipation performance of an Oscillating Water Column (OWC) perforated floating breakwater under irregular conditions. The study examines effect spacing, width OWC opening, water depth, incident angle, and significant height on breakwater. results indicate that OWC-perforated surpasses si...

In this study, aluminide coating was employed to enhance the high-temperature cyclic oxidation of Rene-80 superalloy at 950ºC. The microstructural aspects and phase constituents of samples were  investigated with scanning electron microscopy (SEM) and x-ray diffraction (XRD) techniques. The result of oxidation tests showed that the weight gain in the uncoated sample was considerably higher than...

It is widely recognised that coastal-defence structures generally affect the structure of the assemblages they support, yet their impact on adjacent systems has been largely ignored. Breakwaters modify the nearby physical environment (e.g. wave action) suggesting a local impact on biological parameters. In the present study, an ACI (After-Control-Impact) design was used to test the general hypo...

Most coastal structures have been built in surf zones to protect coastal areas. In general, the transformation of waves in the surf zone is quite complicated and numerous hazards to coastal communities may be associated with such phenomena. Therefore, the behavior of waves in the surf zone should be carefully analyzed and predicted. Furthermore, an accurate analysis of deformed waves around coa...