Strong light-induced negative optical pressure arising from the kinetic energy of conduction electrons in plasmonic cavities

摘要

We found that very strong negative optical pressure can be induced inplasmonic cavities by LC resonance. This interesting effect could be describedqualitatively by a Lagrangian model which shows that the negative opticalpressure is driven by the internal inductance and the kinetic energy of theconduction electrons. If the metal is replaced by perfect conductors, theoptical pressure becomes much smaller and positive.