A team of engineers at the Max Planck Institute for Intelligent Systems, the Chinese University of Hong Kong and the Gwangju Institute of Science and Technology has found that ferrofluidic drops in a tank of water can be forced to rise in desired ways using light. The study is published in the journal Science Advances.A team of engineers at the Max Planck Institute for Intelligent Systems, the Chinese University of Hong Kong and the Gwangju Institute of Science and Technology has found that ferrofluidic drops in a tank of water can be forced to rise in desired ways using light. The study is published in the journal Science Advances.[#item_full_content]