Version 2 is now LIVE We have more than tripled the number of problems, broken each unit into several. With this exercise should be pretty obvious how the efficiency is calculated and it’s impact on the power output of a system.įor any questions or observations regarding this tutorial please use the comment form below. We have recently revised and improved The Calculator Pad. The ratio of energy transferred to a useful form compared to the total. Put the numbers in to get 3.14 joule 21.7 joule × 100, which can be worked out to be an efficiency of 14.5. Efficiency can be determined quantitatively by the ratio of useful output to total input. The presented studies can facilitate the development of high-efficiency metalenses in the low frequency and have significant potential applications in high-resolution microwave imaging, high-gain metalens antennas and others.The symbol used to define efficiency is the Greek letter eta (η): \ efficiency useful energy shifted total energy input to the system × 100. The influence of the open angles of the symmetric split ring transmitarray metasurface on the focusing performances such as working efficiency and NA of the designed metalens is also studied and analyzed finally, which can add new degree of freedoms to optimize its focusing performance. Radiation detection has been a main interest for researchers as all kind of produced particles in atomic and subatomic physics based on the measurement. In order to verify its high working efficiency of the proposed plasmonic metalens, a sample is also fabricated and a much higher focusing efficiency of 65% is realized in the measurements. The designed ultra-thin plasmonic metalens has a moderate large numerical aperture of 0.67 (NA = 0.67). In Jiang and Zhang, Journal of Computational Physics, 253 (2013) 368388, IIF methods are designed to efficiently solve stiff nonlinear advectiondiffusionreaction (ADR) equations. Thanks to its high transmittance and large phase shift of the plasmonic meta-atoms, the designed metalens achieves both high transmissive efficiency of 80% and high focusing efficiency of 50% on the focal plane of F = 4.6λ in the simulations. Implicit integration factor (IIF) methods were developed for solving time-dependent stiff partial differential equations (PDEs) in literature. However, other effectiveness measuresthat can exceed 1.0 are used for heat pumpsand other devices that move heat rather than convert it. Efficiencies may not exceed 100, e.g., for a perpetual motionmachine. Calculating efficiency How good a device is at transferring energy input to useful energy output is called efficiency. Efficiency in physics (and often for chemistry) is a comparison of the energy output to the energy input in a given system. In this paper, an ultra-thin plasmonic metalens with only 0.1λ (λ is working wavelength, the aperture size is 7λ) device thickness is designed by changing the radius of the proposed symmetric complementary split ring resonator antenna metasurfaces. Generally, energy conversion efficiency is a dimensionlessnumber between 0 and 1.0, or 0 to 100. High-efficiency transmissive metalenses with an ultra-thin device thickness are an important aspect especially in the low frequency by using plasmonic transmitarray antennas. Metasurface lenses (or metalenses) have aroused great attentions and efforts in the community of metamaterials or metasurfaces due to its ultrathin device dimension and superior focusing performances. MoS2/ZnO van der Waals heterostructure as a high-efficiency water splitting photocatalyst: a first-principles study Physical Chemistry Chemical Physics ( IF 3.945) Pub Date : 00:00:00, DOI: 10.
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