Drs. Chen, Erwin, and Watson are recognized for the development of new technology for polarizing neutrons and its application to neutron science. They have built and led a world-leading program of helium-3-based neutron spin filters at the NIST Center for Neutron Research, enabling over 80 ground-breaking publications. By addressing critical design challenges associated with implementing these filters on the Very Small Angle Neutron Scattering (vSANS) and Multi-Axis Crystal Spectrometer (MACS) instruments, they have opened up new and unprecedented capabilities for neutron science.