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94 labs · 30 student voices
Faculties at Waseda University ›
Shigeaki Koike, Professor
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The Koike Lab studies, from a mathematical standpoint, the partial differential equations that describe natural phenomena and engineering problems. In many cases the solutions cannot be written as explicit formulas, so the lab first finds a "solution in a weak sense" and then shows that it is a true solution. Equations that arise in engineering and optimal control are called fully nonlinear, and a type of weak solution called a viscosity solution is used for this class. The current focus is regularity theory, which investigates how smooth those viscosity solutions are.
Atsushi Tackeuchi, Professor
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The Tackeuchi Lab investigates the various ultrafast phenomena that occur in semiconductor quantum structures and explores their applications. The lab works on timescales from the picosecond (one trillionth of a second) to the femtosecond (one quadrillionth of a second), the shortest timescales humans can reach. By irradiating semiconductors with extremely short light pulses from specialized lasers, the lab tracks how electrons behave inside them. It aims to clarify the physics needed to make devices such as transistors and lasers even faster, and to connect that understanding to applications.
Hiromichi Niikura, Professor
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Niikura Lab uses lasers that emit light for an extremely short time to measure ultrafast changes in atoms and molecules. One attosecond is 10⁻¹⁸ seconds. Being able to resolve times this short makes it possible to follow the motion of electrons, which is faster than the changes in molecular shape. The measurements use high-intensity ultrashort laser pulses and attosecond laser pulses in the extreme ultraviolet range (high harmonic generation). The aim is to capture changes in the structure and in the electronic states of atoms and molecules.
Takahisa Harayama, Professor
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The Harayama Lab studies the origin and function of randomness and complexity that appear in a wide range of problems, based on nonlinear physics such as chaos. The lab values a perspective that looks simultaneously from both the mathematical, theoretical side and its exact opposite, the applied side. The lab builds theories of chaos in classical dynamical systems, quantum chaos, and wave chaos, and applies the results to nonlinear optics, solid-state physics, and new devices. The lab's style is that stepping into applications, in turn, brings fundamental and theoretical problems to light.
Takeshi Fukuhara, Professor (Fixed-term)
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The Fukuhara Lab uses atoms cooled to ultracold temperatures with lasers to experimentally study the behavior of quantum many-body systems made up of many particles. When particles gather, various phenomena arise from the interactions between particles and from the properties of quantum statistics, but solving the problem generally becomes difficult. Cold atoms can be described by very simple physical models and their conditions can be finely tuned, which makes them an excellent platform for studying quantum many-body systems. The lab aims to deepen understanding by achieving ultimate control over quantum many-body systems, and to connect that understanding to applications.
Takashi Mizokawa, Professor
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The Mizokawa Lab investigates the states of electrons that underlie the electrical, magnetic, and optical properties that various solids exhibit. It uses spectroscopic experimental techniques that employ relatively high-energy light, from ultraviolet to X-rays. When light is shone on a solid in a vacuum, electrons are ejected; by measuring their energy and momentum, one can determine the energy and momentum of the electrons inside the solid. The main subjects are transition-metal compounds and rare-earth compounds that show properties such as magnetism, superconductivity, and metal-insulator transitions.
Shigeo Morishima, Professor
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The Morishima Lab's research goal is to contribute to a safe and secure society, an enriched quality of life, and Japan's traditional culture through advanced technology. Using physics and mathematics as tools, the lab works on digital signal processing, computer vision, computer graphics, and human-computer interaction. The lab places importance on not stopping at demonstrating technical capability, but on giving it concrete form as visible content and practically useful systems. A distinguishing feature of this lab is that its ultimate target is directed toward human happiness and rich sensibility and culture.
Kohei Imura, Professor
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The Imura Lab is a photophysical chemistry lab that studies how matter of nanometer size behaves toward light. Spectroscopy, which measures the absorption, reflection, and scattering of light, can be applied widely, but because of the diffraction of light, the finest detail it can resolve is limited to about the wavelength of light. Using a microscope based on a new principle called near-field optics, the lab observes samples at nanoscale resolution that exceeds this diffraction limit. The lab visualizes the plasmons that appear in noble metal nanoparticles such as gold, aiming to connect this work to the use of light energy and to sensor applications.
Junji Seino, Associate Professor
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The Seino Lab researches cheminformatics, analyzing big data in chemistry with artificial intelligence (AI) techniques. The compounds that arise from combinations of elements are almost infinite in number, and the compounds registered in databases exceed 100 million. Chemistry has so far relied heavily on the experience and intuition of experimenters, and it was not always possible to arrive at a compound with a targeted property. By linking experimental chemistry, computational chemistry, and informatics, the lab aims to build a framework for materials development that does not depend on chance discoveries.
Aditya Wibawa Sakti, Associate Professor
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The Sakti Lab uses theoretical and computational methods to clarify, from the underlying mechanisms, how chemistry works in the world. The lab simulates molecules and materials by combining a program it has developed, called CMMDE, with various computational methods. Its current focuses are ion batteries, homogeneous and heterogeneous catalysts, drug discovery, cosmetics, and condensed-phase materials. The lab is interested in how to design batteries, catalysts, drugs, and more that lead to a more sustainable and safer world.
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