Twisted light: self-torque could be used to manipulate molecules. (Courtesy: iStock/VikaSuh) Physicists in Spain and the US have shown that the orbital angular momentum, or twistedness, of light can ...

We directly measured the torque on a single DNA molecule as it underwent a phase transition from B-form to supercoiled P-form. Ideally, angular trapping handles used to generate both torque and ...