東京大学新領域創成科学研究科基盤系物質系専攻| Mayumi-Lab

INTRODUCTION OF LABORATORY

The research goal of Mayumi group is to reveal molecular mechanisms for macroscopic properties of soft matter systems. One of our targets is to understand toughening mechanisms of polymeric materials. Recently, the fine control of nano-structure has improved significantly the mechanical toughness of polymer-based materials. The tough polymeric materials are expected to be applied for biomaterials, soft robots, and structural materials for automobiles and airplanes. We study nano-structure and dynamics of the tough polymeric materials by means of small-angle and quasi-elastic neutron scattering measurements with deuterium labelling. The deuterium labelling technique enables us to observe separately each component in multi-component systems. By combining the nano-scale structure/dynamics measurements, macroscopic mechanical tests, and molecular dynamics simulations, we aim to establish molecular understandings of toughening mechanisms for polymeric materials and discover novel molecular designs for tough materials.

x線1分子計測法の原理。対象は生体分子からナノ無機構造体まで可能。

DNA1分子高精度運動観察。チャネルタンパク質の内部運動計測。フィラメント分子の2方向運動計測。1Å精度以下の1分子運動計測。～aNX線放射圧の計測。運動のシミュレーション。1分子抗原抗体反応ダイナミクス。測定されたサンプル系の例。

Message

If there is an opportunity, the mind will change.Grab even one success in failure, gain confidence and go out.I hope this will be a place where you can develop your own strength to open up your life.

I specialized in physics because I am very impressed with the fact that physics can explain complex phenomena by simple laws. When I was a graduate student, my supervisor supported me to try new things even though I failed sometimes. From the experience, I would like to respect the ideas and motivations of students. I have been studying polymer physics to under-stand the molecular origin of their physical properties. By revealing simple principles in complicated phenomena of polymers, we are trying to establish material designs for the applications in the fields of medi-cine, robot, automobile, and so on.

MEMBER

Associate Professor Koichi Mayumi

2009 Graduate School of Frontier Sciences, The University of Tokyo Ito and Yokoyama Laboratory, Department of Advanced Materials Science Research Fellowship for Young Scientists (DC1)

2012 ESPCI ParisTec Laboratoire SIMM/PPMD CNRS Postdoctoral Researcher

2014 Graduate School of Frontier Sciences, The University of Tokyo Ito and Yokoyama Laboratory, Department of Advanced Materials Science Assistant Professor

2018 Graduate School of Frontier Sciences, The University of Tokyo Ito and Yokoyama Laboratory, Department of Advanced Materials Science Project Lecturer

2020 PresentThe University of Tokyo Neutron Science Laboratory Affiliated to the ISSP Associate Professor

STUDENT VOICE

Chang Liu

I have been studying with Prof. Mayumi since I was a Ph.D student. We discuss directly with Prof. Mayumi in meetings. Prof. Mayumi encourages students to find interesting research topics by themselves, so I enjoy the comfortable atmosphere. We have many chances to use neutron and X-ray facilities for our research. I was very excited when I discovered a new phenomena in a X-ray facility.