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Particle Beam Chemistry Lab
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The lab explores chemical reactions on solid surfaces using beams of atoms and molecules.
AboutAbout the lab
Developing original instruments to explore surface reactions.
The Particle Beam Chemistry Lab studies the elementary processes of chemical reactions that particle beams of atoms and molecules induce on solid surfaces, with the aim of controlling them.
While developing its own advanced instruments, the lab conducts physical chemistry research rooted in making things (monozukuri).
The lab also develops original surface analysis instruments that use particle beams.
The lab belongs to the Institute for Radiation Sciences at The University of Osaka and is a cooperating division of the Department of Chemistry, Graduate School of Science.
Key terms
- Particle beam
- A stream of particles made of atoms or molecules. It induces chemical reactions on solid surfaces.
- Supersonic molecular beam
- A stream of molecules traveling together at the same speed (a molecular beam) whose speed is at or above the speed of sound.
- X-ray photoelectron spectroscopy
- A method in which X-rays are directed at the surface of a material, and the chemical state of the surface is determined from the speed of the electrons that are emitted.
NewsLab news
View More ↗ResearchResearch themes
The lab investigates the elementary processes of chemical reactions that particle beams of atoms and molecules induce on solid surfaces, with the aim of controlling them. It also develops original surface analysis instruments that use particle beams, aiming to solve a variety of problems in surface science.
*Illustrative imageStudying surface reactions with aligned molecular orientation
Using a supersonic molecular beam whose molecular orientation is controlled by a hexapole inhomogeneous electric field, the lab studies steric effects in surface reactions. With an apparatus combined with X-ray photoelectron spectroscopy, it examined the oxynitridation of Si by oriented NO and found that collisions at the N end give higher reactivity.
*Illustrative imageStudying how oxidation proceeds with synchrotron radiation
Using high-resolution photoelectron spectroscopy with synchrotron radiation, the lab investigates how the translational energy of the incident beam affects surface reactions, and is also advancing applications to thin-film formation technology. It examines oxide formation and the anti-corrosion effect of oxygen molecules with a translational kinetic energy of 0.5 eV or more on Cu and Cu3Au surfaces.
*Illustrative imageMechanisms of phase transitions on solid surfaces
The lab aims to clarify and tune the electron-phonon interaction that accompanies the low dimensionality of electronic systems. Using high-resolution helium atom scattering, it found a large softened branch due to a Kohn anomaly on the surface of a hydrogen-adsorbed Mo-Re alloy, and has also found that it can be tuned by the alloy composition.
*Illustrative imageDeveloping a mass spectrometer using ultra-low-energy ions
The lab is developing a secondary ion mass spectrometer that makes use of the soft sputtering phenomenon near the threshold. Using a high-brightness, ultra-low-energy ion beam with a translational energy of 100 eV or less, it analyzes the energy of scattered ions to capture phenomena near the sputtering threshold.
MembersFaculty
The members of the Particle Beam Chemistry Lab are the faculty, visiting professors, project researchers, administrative assistants, and doctoral students.As of 2026
- ProfessorMichio Okada
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Cellphone in the beamline ( )” CLS Research Office from Saskatoon, Canada / CC BY-SA 2.0 (cropped)
- Studying surface reactions with aligned molecular orientation: “Molecular-beam epitaxy 412 RIBER system at LAAS-CNRS” QGravelier / CC BY-SA 4.0 (cropped)
- Studying how oxidation proceeds with synchrotron radiation: “European Synchrotron Radiation Facility (ESRF) - Grenoble, France” Anders Sandberg from Oxford, UK / CC BY 2.0 (cropped)
- Mechanisms of phase transitions on solid surfaces: “LEED pattern of clean Platinum-Rhodium single crystal” Mkosterv / CC0 (cropped)
- Developing a mass spectrometer using ultra-low-energy ions: “Secondary Ion Mass Spectrometer (SIMS) Tube - DPLA - 2a22bbd17e faf628d93a557 (page 2)” Honig, Richard E. (Richard Edward) / CC BY 4.0 (cropped)
- Related lab (Surface Chemistry Lab): “Scanning tunneling microscope-MHS 2237-IMG 3817” Rama / CC BY-SA 3.0 fr (cropped)
- Related lab (Adsorption Chemistry Lab): “Bruker 600 Mhz NMR Spectrometer” SiriusHT / CC BY-SA 4.0 (cropped)
- Related lab (Analytical Chemistry Lab): “Working in analytical chemistry 5” Martin Schaier / CC BY 4.0 (cropped)
- Related lab (Quantum Chemistry Lab): “B2H6 intrinsic bond orbital” Alicesu / CC BY-SA 4.0 (cropped)
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