For this reason , they are often used to manipulate and study single molecules by interacting with a bead that has been attached to that molecule .
Optical traps are very sensitive instruments and are capable of the manipulation and detection of sub-nanometer displacements for sub-micron dielectric particles .
For this reason , traps are often used to manipulate and study single molecules by interacting with a bead that has been attached to that molecule .
Optical traps are very sensitive instruments and are capable of the manipulation and detection of sub-nanometer displacements for sub-micron dielectric particles .