Speaker：Prof. Masao Doi, Institute of Theoretic Physics

Title：Elastic effect in the diffusion of gels and polymer solutions

Time: February 23th 10:30 am.

Venue: Lecture Room 324, AISMST (Building #2, KeJiYuan, North Campus)

Faculties and students are warmly welcome.

School of Emergent Soft Matter

South China Advanced Institute for Soft Matter Science and Technology

February 23, 2022

Brief Biography：

Masao Doi is the Chief Scientist of Interdisciplinary Center for Theoretical Study (Under the supports of the ITP, the Oujiang Laboratory and Wenzhou Institute), who is a Professor Emeritus at Nagoya University and the University of Tokyo and was a fellow of Toyota Physical and Chemical Research Institute and the director of Center of Soft Matter Physics & its Applications, Beihang University.

Masao Doi is a leading polymer scientist who has worked on many problems in soft matter and given important contributions. He has developed fundamental theories that explain complex mechanical properties of soft matter (polymers, gels, liquid crystals, colloidal solutions etc.) from microscopic structure of the material. In his early work, he showed how the complex viscoelasticity of liquid polymer is related to the molecular structures, such as molecular weight, branching, stiffness etc. He also gave the first molecular theory for the flow of liquid crystals.

In 1978 and 1979 he wrote a series of papers with Sir Sam Edwards, expanding on the concept of reptation introduced by Pierre-Gilles de Gennes in 1971. They explained the nonlinear viscoelasticity of polymeric liquid starting from a molecular model. The Doi-Edwards theory was the first molecular theory for viscoelasticity of the molten state of polymers that also was a scientific milestone in the field of polymer research. He has studied many problems in soft matter in non-equilibrium states, such as rheology, diffusion, phase transitions etc., and made important contributions.

Masao Doi has written 3 monographs on polymer and soft matter physics. “The Theory of Polymer Dynamics” (coauthored with S.F. Edwards, Oxford Univ. Press, 1986)”, “Introduction to Polymer Physics” (OUP, 1995), and “Soft Matter Physics” (OUP 2013). They are extensively used by researchers and students around the world.

With these works, Masao Doi has received many international awards including Polymer Prize (American Physical Society 2001) and Bingham medal (Society of Rheology 2001). He was awarded Purple Ribbon Medal in 2010. In 2015, he was awarded the prestigious Humboldt Research Award by the Alexander von Humboldt Foundation. He became a foreign member of National Academy of Engineering, USA in 2016.