A novel resonant inductive magnetic coupling wireless charger with TiO 2 compound interlayer

Siu Lau Ho, Junhua Wang, Weinong Fu, Mingui Sun

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10 Citations (Scopus)


A nonradiative energy transformer exploiting TiO2nano-powder and (C4H6O2)xlatex as a combined interlayer is proposed. The transformer works on strong coupling' between two coils (i.e., resonators), which are physically separated from each other by distances that are longer than the characteristic sizes of each resonator, to realize efficient wireless energy transfer. Nonradiative energy transfer between the two resonators is facilitated through the coupling of their resonant-field evanescent tails. Finite element analysis and experiments have been carried out to facilitate quantitative comparison. The efficiency of the proposed system is 70.6 at 5 cm and 26.3 at 15 cm at an operating frequency of 1.74 MHz. When compared with typical magnetic inductive coupling energy transmission devices with low dielectric constants, the efficiency of the proposed system is much higher.
Original languageEnglish
Article number07E502
JournalJournal of Applied Physics
Issue number7
Publication statusPublished - 1 Apr 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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