Electromagnetism & direct energy weapons.

In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields.  The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interactions of atoms and molecules. Wikipedia 

Directed energy weapons project a focused beam of electromagnetic waves at a high frequency and short wavelength, making them capable of penetrating superficial skin layers to cause pain and burning without causing ionizing radiation that can alter cellular structure.