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157 labs · 25 student voices
Faculties at Hokkaido University ›
Nao Hamamuki, Associate Professor
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Prof. Hamamuki studies nonlinear partial differential equations. The main subjects are equations that describe the motion of surfaces (interfaces) separating two different phases of a substance, as they arise in crystal growth and materials science. Based on the theory of viscosity solutions, a type of weak solution, the lab investigates the existence, uniqueness and long-time behavior of solutions, aiming to give these equations a rigorous mathematical foundation. Recently, the lab has also become interested in understanding phenomena from multiple perspectives through limit procedures, such as the relationship between the discrete and the continuous and between the micro and the macro.
Akira Sakai, Professor
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Prof. Sakai studies problems in mathematical physics, especially probability theory and statistical mechanics, with mathematical rigor. The central interests are phase transitions and critical phenomena, and the limit theorems associated with them. For example, the Ising model, a statistical-mechanical model of a magnet, shows a phase transition in which spontaneous magnetization appears or disappears as the temperature is changed. Critical phenomena are thought to arise from the cooperation of infinitely many components, and they require a theory that goes beyond conventional probability theory dealing with independent variables.
Hirotoshi Kuroda, Associate Professor
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Prof. Kuroda studies variational problems and partial differential equations with variational structure. The main subject is the total variation flow equation, which arises when removing noise from images. Because this equation is strongly singular, the lab uses subdifferentials of convex functions and the nonlinear semigroup theory they generate to study whether solutions exist and how they behave. The lab also covers total variation flow equations that appear in mathematical models of crystal growth, and recently it has taken an interest in phenomena that occur when a domain becomes thin and degenerates.
Hidenori Noguchi, Visiting Professor
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The Interfacial Energy Conversion Materials Chemistry Lab studies chemical reactions at the interface between a solid and a solution, where electron transfer plays the leading role. The lab develops methods for assembling atoms, molecules, and nanoclusters into functional material phases. It investigates energy conversion reactions at solid–liquid interfaces from a fundamental level, including electrode reactions in electrocatalysts and secondary batteries, with the aim of helping solve energy problems. The lab is part of the Hokkaido University–NIMS Joint Graduate School Program and accepts doctoral students who conduct their research at the National Institute for Materials Science (NIMS).
Kazunari Yamaura, Visiting Professor
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The Superconducting Materials Chemistry Lab searches for new inorganic materials with novel functions, focusing on solid-state oxides and similar compounds. Through advanced materials synthesis, precise structural analysis, and property characterization, the lab varies crystal structures, chemical compositions, and crystal morphologies in many different ways. By enhancing functions such as superconductivity, electronic properties, magnetism, and half-metallicity, and by exploring the underlying scientific principles, the lab aims to open up seeds for innovative new materials. The lab is part of the Hokkaido University–NIMS Joint Graduate School Program and accepts doctoral students who conduct their research at the National Institute for Materials Science (NIMS).
Naoto Shirahata, Visiting Professor
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The Nanoscale Physical Properties Science Lab develops materials with optical and electronic functions, based on nanomaterials, physical properties science, and device science. In addition to sophisticated material design and synthesis, the lab verifies material properties using cutting-edge observation and measurement techniques. The lab's research covers the search for new physical properties and their realization in devices, including applications to medical materials. The lab is part of the Hokkaido University–NIMS Joint Graduate School Program and accepts doctoral students who conduct their research at the National Institute for Materials Science (NIMS).
Masafumi Yoshio, Visiting Professor
0 student voices
The Nano-Organized Materials Chemistry Lab conducts research on creating materials with high chemical functionality, based on materials chemistry. The lab synthesizes materials and examines the structure and properties of the resulting materials in detail. It combines this with atomistic simulation, which allows the relationship between properties and crystal structure to be reasoned about rationally, and focuses mainly on materials used in fuel cells. The lab is part of the Hokkaido University–NIMS Joint Graduate School Program, and accepts doctoral students who conduct their research at the National Institute for Materials Science (NIMS).
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