EUJO-LIMMS aims to reinforce research collaboration between Europe and Japan to tackle new challenges in micro and nano technologies. The strategy consists in opening the activity of an international laboratory, the Laboratory for Integrated Micro Mechatronic Systems (LIMMS), located in Tokyo, to European partners. The LIMMS is a research unit between CNRS and the Institute of Industrial Sciences of the University of Tokyo (UT-IIS). More than 100 French researchers have stayed at LIMMS and have combined their scientific and technological expertise with their Japanese hosts.EUJO-LIMMS will open LIMMS structure and hosting capacities to researchers from three European partners. To guaranty a smooth evolution, the partners having already networking activities with both CNRS and UT agreed to join the program. These partners are EPFL in Switzerland, IMTEK in Germany and VTT in Finland.The scientific challenge of EUJO-LIMMS is to push the frontiers of micro and nano systems technology in capitalising the complementary expertise of UT and European partners. The hosted European researchers will develop joint projects for new applications in flexible electronics, optics, nanotechnology, molecular and cellular bio-engineering.At mid-project a call will be organised to expend the collaboration to European researchers from other Member States or Associated Countries. The proposals will be stimulated by an open workshop in Europe and the new partner will be selected by the EUJO-LIMMS consortium.The opening of the institutional arrangement of LIMMS/CNRS-UT to additional partners will be studied on the basis of the experience acquired by UT and CNRS, and on the discussions with the consortium.The EUJO-LIMMS targets significant enhancement of EU-Japan's collaborations, as the scientific topic addresses micro- and nanotechnologies, a blooming area where many applications are foreseen. Japan is ahead in that field and is a country where the Technology is a Science.