Organisms have evolved the ability to manipulate light for vision, as a means capture its energy, protect themselves from damage, especially against ultraviolet (UV) and other high flux radiation, display purposes. The makeup of structural elements used this manipulation often discloses novel pathways man-made photonic devices. Iridocytes in mantle giant clams Tridacninae subfamily many ways, e...

Abstract Realizing a high color rendering index (CRI) in Ce:LuAG transparent ceramics (TCs) with desired thermal stability is essential to their applications white LEDs/LDs as converters. In this study, based on the scheme of configuring red component by Cr 3+ doping, an efficient spectral regulation was realized Ce,Cr:LuAG TCs. A unilateral shift phenomenon could be observed both photoluminesc...

We describe a laser-plasma platform for photon-photon collision experiments to measure fundamental quantum electrodynamic processes such as the linear Breit-Wheeler process with real photons. The has been developed using Gemini laser facility at Rutherford Appleton Laboratory. A wakefield accelerator and bremsstrahlung convertor are used generate collimated beam of photons energies hundreds MeV...

In many developing countries, meeting the energy demand has become a major challenge. Such problem is more prominent in rural and remote areas of country. The load requirements these are less same can be addressed with renewable sources. proposed work deals MPPT based standalone PV system using priority controller. used to meet out critical demands areas. Due change weather conditions, an unreg...

A simple, topology-independent method is proposed for simulating the responses of open and closed-loop quasiresonant DC-DC convertors operating in the zero-currentswitching mode (ZCS-QRC). The method hinges on the substitution of the resonant network and switch assembly, fundamental in the realisation of such systems, by an equivalent circuit which represents its average behaviour. This permits...

Electric vehicles are regarded as a significant way to mitigate the global energy crisis and environmental pollution problem. Motor control is very important part for electric vehicles. As hardware, motor controller usually has components such power module, microprocessor unit, IGBT driver, sensors, resolver-to-digital convertor. software, field-oriented (FOC) with space vector pulse width modu...