Complex sentence: Tractor/Repulsor Beams Laser-based Optical Tweezers Optical Tweezers an Introduction have been developed, which utilize the radiation from the laser beam to manipulate small particles in what is called an "optical trap".
Split into simpler sentences: Tractor/Repulsor Beams have been realized as Laser-based Optical Tweezers Optical Tweezers an Introduction. These tweezers have been developed to utilize the radiation from the laser beam to manipulate small particles in what is called an "optical trap".