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In this letter, a potential way to wirelessly transmit power and information simultaneously assembled by ultra-subwavelength magnetic metamaterials (MMs) is proposed. Time-domain experiments are performed to express the ability of manipulation of the magnetic field by MMs. The results demonstrate that MMs possess strong power for widening frequency bandwidth on transferring information. Meanwhile...
To investigate the effect of hard/soft exchange spring on magnetic properties, ${L} 1_{0}$ -FePt/${A}1$ -FePt bilayer films are fabricated on MgO(110) substrates by using magnetron sputtering. The hard layer annealed at a moderate temperature of 500 °C showed an unseparated granular morphology with an almost full coverage, in spite of an incomplete $A1\to {L} 1_{0}$ transition. The c-axis (easy...
The power electronic transformer (PET) can perform the functions of voltage transformation, fault isolation, power flow regulation, reactive power compensation etc. This paper demonstrates the parameter design principles of capacitors and inductors in a power electronic transformer (PET) which based on modular multilevel converter (MMC) and input-series-output-parallel (ISOP) dual active bridges (DAB)...
Taken the relief maps, MSS images, TM images, ETM images and CBERS images as basic data sources, this paper studied on the dynamic of lakes in Tibetan Plateau since 1960's using RS and GIS technique. The results showed that the increasing area of lakes in Tibetan Plateau in last 50 years is 5760 km2. The change can be divided into two phases: the lake trended to shrink from 1960's to the imddle of...
A lot of people think innovative ideas are random and have to come from genius or otherwise `trial and error'. There is also a myth that Asian people are strong in `copying' but not `creating'. Systematic Innovation is a structured way of creating innovative ideas to solve engineering, service and management problems. It is a forced thinking method to create ideas in a fast and directed way. It has...
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