We proposed a compact and efficient polarization rotator (PR) based on an asymmetric hybrid plasmonics waveguide (HPW) the lithium-niobate-on-insulator (LNOI) platform. focus design of rotation angle balance between two modes. The presented device exhibits extinction ratio as high 59.58 dB insertion loss 1.44 with length only 13.7 μm. fabrication tolerances suitable process are also discussed t...

Co-designed health initiatives are gaining popularity in Aotearoa (New Zealand). However, emerging research identifies potential pitfalls for Indigenous populations, particularly Māori (Indigenous Peoples of Aotearoa), when Kaupapa principles ignored. Using the He Pikinga Waiora Implementation (HPW) framework as a guide, this paper provides an autoethnographic reflective account co-design proce...

This paper deals with implementation of Sinusoidal Pulse-Width-Modulation (SPWM) for a single-phase hybrid power filter generator for Photovoltaic (PV) and wind grid applications. Using policy iteration algorithm, an improved variable step-size perturbation and observation algorithm is contrived and it is implemented proficiently using a hard-ware description language (VHDL) (Very High Speed In...

In this study, esterification reaction of different carboxylic acids (Acetic acid, Palmitic acid, Oleic acid) with ethanol was investigated by ZnO, Al2O3-ZnO mixed oxide and phosphotungestic acid (10 %wt) immobilized on the Al2O3-ZnO mixed oxide. The heterogeneous catalysts were characterized by XRD, BET, FE-SEM and EDX techniques. Optimum yield was achieved by using 10% HPW/Al2O3-ZnO as the be...

The main objective of this work was to design an innovative method prepare heterogeneous heteropolyacid catalysts. H3PW12O40 (HPW) modified with tin(II) by two methodologies: a conventional aqueous ion-exchange (CS) and redox solid-state (SS). In both cases, Fourier transform infrared spectroscopy (FTIR) X-ray diffraction (XRD) measurements evidenced that Keggin structure preserved. All materia...