Complex sentence: His research has contributed to the development of single crystal like behaviour in long lengths of superconducting materials, and of wires that allow high-temperature superconductors to allow very high performance to be obtained in a cost-effective manner.
Split into simpler sentences: His research has proved pivotal in the development of single crystal like behaviour in long lengths of superconducting materials. He has contributed to the development of wires that allow high-temperature superconductors to allow very high performance to be obtained in a cost-effective manner.