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Dynamic frequency scaling (also known as CPU throttling) is a power management technique in computer architecture in which the frequency of a microprocessor is dynamically…

Dynamic voltage restoration (DVR) is a technique for mitigating voltage sags and swells in electrical power distribution. It is a technology used in power systems…

Concentrator photovoltaics (CPV) is a photovoltaic technology that produces electricity from sunlight. It is a method of turning sunlight into electrical power via photovoltaic (PV)…

Transformation optics is a fascinating branch of physics and engineering that uses transformation principles to modify electromagnetic fields. It is a subfield of optics that…

A photonic crystal is an optical nanostructure with a periodically changing refractive index. It is a material structure whose dielectric characteristics vary periodically, affecting the…

A photonic metamaterial (PM), also called an optical metamaterial, is a type of electromagnetic metamaterial that interacts with light at terahertz (THz), infrared (IR), or…

A metamaterial absorber is a form of metamaterial designed to effectively absorb electromagnetic radiation, such as light. These intriguing structures are designed to efficiently absorb…

Regenerative braking is an energy recovery technique that slows a moving vehicle or item by transforming its kinetic or potential energy into a form that…

Negative thermal expansion (NTE) is a unique physicochemical process in which some materials contract when heated rather than expanding, as most other materials do. It…

Thermal expansion describes the tendency of materials to alter shape, area, and volume in response to temperature variations. It is the tendency of matter to…

An angle seat piston valve is a pneumatically operated valve with a piston actuator that provides linear actuation to lift a seal from its seat.…

A piston valve is a device that controls the flow of a fluid or gas through a tube or pipe by moving a piston within…