Prof Rachel Oliver FReng is a materials engineer, inventor and spinout founder, and Director of the Cambridge Centre for Gallium Nitride. Her passion for understanding and engineering the small-scale structure of semiconductor materials to enable new technologies has been recognised in 2021 by her selection as an IEEE Photonics Society Distinguished Lecturer and in 2023 by the award of a Royal Academy of Engineering Chair in Emerging Technologies. Rachel is an advocate for equality, diversity and inclusion in science and engineering, and has addressed the Parliamentary and Scientific Committee on these issues. She is also engaged with policy-making as a member of the Advisory Board to the All Party Parliamentary Group on Semiconductors, and was a member of the UK semiconductor strategy delegation to Washington DC in 2023.