Researchers have developed a new technique to flip the spin of unpaired electons - Ballistic Spin Resonance.
Previous methods to do this - Electron Spin Resonance using high-frequency electric fields is difficult to generate on a chip. The new method should make it easier. The major drawback of the new method - the electrons are flipped in a random way... you can't actually choose the spin. Future studies hope to overcome this.
Read more at NanoWerk