Marin Soljačić

In 2007 Marin Soljačić and his assistants successfully made the first efficient non-radiative power transfer at a distance of 2 meters turning on a 60 W light bulb. Energy transfer was 40% efficient. Professor Soljačić's experiments and work in wireless energy transfer are related in spirit to the work of Nikola Tesla in the early 20th century, but also have significant differences: unlike Tesla's long-range wireless energy transfer in Colorado, the Soljačić group focuses only on short-range transfer, and unlike Tesla coils which resonantly transfer power with electric fields (which couple strongly to surrounding matter, most famously inducing artificial lightning) the Soljačić proposal uses coupling primarily via magnetic fields. This work is currently being pursued in Soljačić's WiTricity company.

In addition to wireless energy transfer, Prof. Soljačić works on numerous problems on electromagnetism in materials structured on the scale of the wavelength, such as micro- and nano-structured materials for infrared and visible light, including nonlinear optical devices and surface plasmons.