Derek started the Smart Materials and Systems Laboratory in 2008, and took up the leaderships of “Electricity Utilization, Condition Monitoring and Asset Management” Research Area in 2009, High Voltage Engineering Laboratory in 2009, and Electrical Engineering Laboratory in 2013. He has also held the positions of Adjunct Professor of Shanghai Institute of Ceramics, Chinese Academy of Sciences since 2008, Adjunct Professor of Zhejiang University since 2009, Chief Science and Technology Advisor of the Zhucheng Municipal People’s Government, Shandong Providence since 2012, Council Vice Chair and Advisory Court Chair of the Zhucheng Technology Innovation and Entrepreneurship Park since 2013, Visiting Professor of UCLA since 2013, and Invited International Collaborator of the NSF Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems, USA since 2013.