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Applied Physics Lab
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A lab that controls molecular dipoles in organic thin films to explore new functions.
AboutAbout the lab
Toward establishing molecular dipole engineering
The lab (also known as the Ishida Lab) controls the structure of organic thin films with nanoscale thickness and studies the functions that arise from them.
It aims to build the academic foundation of “molecular dipole engineering,” which freely controls the electric dipole moments (dipoles) of molecules and applies them to functions such as sensors and energy harvesting.
The lab also searches for functional organic molecules through quantum chemical calculations, working toward new optical and electronic functions and organic semiconductor lasers.
Using liquid crystal electroconvection, which occurs when an electric field is applied to a liquid crystal, it also studies the properties of transport phenomena caused by weak turbulence.
Key terms
- Electric dipole moment
- A quantity expressing the imbalance between positive and negative charge within a molecule. The lab calls it a dipole
- Organic semiconductor laser
- A laser that uses a thin film of carbon-containing organic molecules as the light-emitting material
- Liquid crystal electroconvection
- Flow produced when an electric field is applied to a liquid crystal. Its optical properties make the spatial structure of turbulence easy to observe
NewsLab news
Paper in Phys. Chem. Chem. Phys. selected as a 2025 PCCP HOT Article and featured on the cover
Students' paper on carbon nanotube film deposition published in Molecular Crystals and Liquid Crystals
ResearchResearch themes
Aiming to understand physicochemical phenomena at the atomic and molecular level and to study the functions of materials scientifically, the lab focuses on controlling the structure of organic thin films with nanoscale thickness and bringing out their functions. It aims to create new devices such as sensors, memories, and light sources from thin films in which the electrical properties and arrangement of molecules are controlled, and it also studies turbulent transport phenomena caused by electroconvection in liquid crystals.
*Illustrative imageFundamental Properties of Organic Molecules and Thin Film Formation
The lab designs molecules by quantum chemical calculations, forms them into thin films, and studies their fundamental properties. It also measures melting points, boiling points, and saturated vapor pressures in vacuum, and conducts fundamental research on organic-inorganic vapor deposition polymerization, a process for forming polymer films in vacuum.
*Illustrative imageOrientation of Molecular Thin Films and Their Electrical and Optical Properties
Using vacuum deposition, epitaxy, friction transfer, uniaxial stretching, and other methods, the lab makes thin films with aligned molecular orientation and studies the anisotropy of their optical and electronic properties. It aims to create dielectric constant modulation devices, polarized light-emitting devices, and organic FETs.
*Illustrative imagePioneering Molecular Dipole Engineering
The lab aims to freely control, in space and in time, the electric dipole moments of polar molecules and bring out ferroelectric, pyroelectric, and piezoelectric properties, targeting memory, sensor, and energy harvesting devices. It also researches implantable devices that can be introduced into the body.
*Illustrative imageQuantum Molecular Chemistry for Organic Semiconductor Lasers
Using triplet–triplet upconversion, which exploits the triplet excited states of molecules, the lab studies how molecular orientation and energy transfer affect efficiency. Using the highly efficient light emission of organic semiconductor thin films, it aims to realize organic semiconductor lasers.
MembersFaculty
The lab's members consist of faculty, technical staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorKenji Ishida
- Associate ProfessorKenichi Goshi
- Assistant ProfessorYoshiki Hidaka
- Assistant ProfessorVISIKOVSKIY ANTON
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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: “NH3-Dipole-Moment” Arcturus10 / CC BY-SA 4.0 (cropped)
- Fundamental Properties of Organic Molecules and Thin Film Formation: “Leptothrix discophora Film in the Vermilion River” StarStuff3 / CC BY 4.0 (cropped)
- Orientation of Molecular Thin Films and Their Electrical and Optical Properties: “Reflection in a soap bubble edit” Brocken Inaglory. The image was edited by user:Alvesgaspar / CC BY-SA 3.0 (cropped)
- Pioneering Molecular Dipole Engineering: “Water molecule - structure and dipole moment” Arcturus10 / CC BY-SA 4.0 (cropped)
- Quantum Molecular Chemistry for Organic Semiconductor Lasers: “Rodamine 6G Dye Laser” Jaurrutia / CC BY-SA 4.0 (cropped)
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- Related lab (量子線物性工学研究室): “JEOL JEM-200A transmission electron microscope -05” High Contrast / CC BY 3.0 de (cropped)
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（山本 知一） ): “Nanocubs” Julia Glazkova / CC BY 4.0 (cropped) - Related lab (原子炉物理・核融合理工学研究室): “Nuclear fuel pellets at the Greifswald Nuclear Power Plant information center” Siarhei Besarab / CC BY-SA 4.0 (cropped)
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