Wireless power transfer by magnetic resonance
Transferencia inalámbrica de energía por resonancia magnética
- Date
- 2007 · confidence high
- Place
- Cambridge, Massachusetts, United States
- Credited to
- Marin Soljačić, André Kurs and colleagues (MIT)
- Field
- Matter & energy
What was discovered
Two tuned resonant coils lit a 60 W bulb more than two metres away, at 40% efficiency. It showed that power can be transmitted wirelessly over mid-range distances.
Tesla had tried large-scale wireless transmission around 1899-1901 without success; short-range inductive coupling is older, and the MIT result (published in Science, 2007) is the mid-range one.
What it led to
- wireless charging of phones and electric vehicles
- the Qi standard (2010)
- research into long-range wireless power