Lim is an Advanced Research Fellow jointly responsible for the ultracold eEDM experiment at Imperial. He contributed to demonstrating sub-Doppler laser cooling of YbF to 100 μK (PRL 2018), the first demonstration of laser cooling of a heavy polar molecule to ultracold temperatures. He now leads development of the lattice eEDM experiment, developing techniques for loading laser-cooled YbF into a 3D optical lattice for precision eEDM measurements with coherence times far exceeding those of the beam experiment.