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[ LIFE SCIENCE ] Tagawa Team

International Research Center for Dynamic Interfacial Mechanics -development of the biomaterial 3D printing technology-

Team Head

Yoshiyuki Tagawa

Affiliation Institute of Engineering
Division / Department Division of Advanced Mechanical Systems Engineering
Position Associate Professor
URL http://web.tuat.ac.jp/~tagawayo/

Foreign Researcher(s)

John W.M. Bush

Affiliation Massachusetts Institute of Technology (U.S.A.)
Division / Department Department of Mathematics
Position Professor
URL http://math.mit.edu/~bush/

Anne de Wit

Affiliation Universite Libre de Bruxelles (Belgium)
Division / Department Faculty of Science
Position Professor
URL https://www2.ulb.ac.be/sciences/nlpc/adewit.html

Claus-Dieter Ohl

Affiliation Otto-von-Guericke University (Germany)
Division / Department Department of Natural Sciences
Position Professor
URL https://forschung-sachsen-anhalt.de/pl/ohl-96884

Jose M. Gordillo

Affiliation University of Seville (Spain)
Division / Department Aerospace Engineering and Fluids Mechanics
Position Professor
URL http://grupo.us.es/gimfus/GIMFus___Miembros.html

Xuehua Zhang

Affiliation University of Alberta (Canada)
Division / Department Department of Chemical and Materials Engineering
Position Professor
URL https://www.ualberta.ca/chemical-materials-engineering/faculty-and-staff/faculty-and-academic-staff/xuehua-zhang

Members

Yuichiro Nagatsu (Institute of Engineering / Associate Professor), Akihito Kiyama (Institute of Global Innovation / Assistant Professor)

Overview

We establish an international research center for a new research area “dynamic interfacial mechanics” on the basis of researches on the control technique of the dynamic interface (e.g., a microjet of functional liquids). Especially, we aim to ground our unique approach to the research by uniting knowledge of several different fields (e.g., fluid dynamics, chemical engineering, applied mathematics). We set a model case “Development of 3D printing technique for the stretchable biocompatible material” and then will exceed the existing boundaries between the current research fields.

Approaches

The 3D printing technology could be a core technology for realizing the futuristic-manufacturing, which unites the virtual and real spaces. However, the current printing technology is not able to eject the functional materials and thus has limitations for the application. One of the main causes is the challenge of controlling the dynamic interface since the material properties are highly rate-sensitive. In order to address this issue, we apply the micro-jetting technique, which we have developed recently. This technique allows us to provide control of the dynamics interface even under the large deformation condition. We will try to establish the international research center for the dynamic interfacial mechanics through this challenge.
This project sets the model case “Development of 3D printing technique for the stretchable biocompatible material” including four sub-themes, namely
1. Development of the pinch-off behavior of dynamics interface upon the droplet impact problem onto the soft solid surface
2. Development of the damaging model of the soft solid
3. Quantitative analysis of the interfacial stress on each loading direction
4. Development of the rheological measurement technique for the dynamic interfacial rheology upon the rapid/large interfacial deformation.

Plan

In 2019, we focus on the sub-theme 1 “Development of the pinch-off behavior of dynamics interface upon the droplet impact problem onto the soft solid surface”.
Firstly, on the droplet impact problem, we will apply a mathematical approach to solve the fluid-structure interaction between the droplet and the soft solid having a remarkable non-linear tendency. Secondary, we derive the theoretical model of the pinch-off phenomenon of the dynamic interface and validate the model by conducting a systematic experiment. Establishing these models is quite crucial in the filed of fluid dynamics, among others, leading the generation of several impactful research outcomes.
In addition, aiming to prepare to sub-themes 2-4 in the coming years, we will start to take the data on the interfacial rheology of the functional (complex) fluids. Namely, it will be directly connected to “Development of the rheological measurement technique for the dynamic interfacial rheology upon the rapid/large interfacial deformation”. Also, we will also develop the experimental procedure and control method of nano-scale interfacial phenomena since the biomaterial is often modeled as the nanoporous material.

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