| Research Field(Keyword & Summary) |
- functionalized glass surface, porous structure, anti-reflection, superhydrophilicity, anti-fogging, anti-fouling
We have developed a hierarchical nanoporous layer (HNL) which is characterized by porous structure with a diameter of few tens of nm on its apparent surface and gradually decreases its diameter as a function of depth. This structure is spontaneously formed in some alkaline etching circumstances. Besides the fundamental science of the structure formation, functionalities the HNL provides are gathering much attention: wide-angle anti-reflection (AR) effect, strong and long-lasting superhydrophilicity which leads to anti-fogging and anti-fouling and so on. We are running various projects to approach the mechanism elucidation and practical applications.
- Conductive Polymers, thermoelectricity, conformation
We are developping a methodology that enhances the thermoelectric performance of conductive polymers, the polythiophene family). We have recently achieved two-digit enhancement on the thermoelectric force, Seebeck coefficient, of a Poly 3,4-ethylenedioxythiophene (PEDOT) based material. In order to elucidate the enhancement mechanism that enables further improvement, we are approaching the phenomenon from both theoretical and experimental aspects.
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| Representative Papers |
- Shuntaro Minegishi, Nanako Ueda, Mizuki Saito, Junhwan Lee, Takuya Fujima, "Highly Water-Repellent and Anti-Reflective Glass Based on a Hierarchical Nanoporous Layer", Coatings, 12(7) 961-961, Jul 7, 2022.
- Hideki Arimatsu, Yuki Osada, Ryo Takagi, Takuya Fujima, "First-principle study on p-n control of pedot-based thermoelectric materials by ptsa doping", Polymers, 13(20), Oct 2, 2021.
- Takumi Ito, Erika Tabata, Yuki Ushioda, Takuya Fujima, "Effect of boron in a hierarchical nanoporous layer formation on silicate glass", Materials, 13(8), Apr, 2020.
- Keita Yasumoro, Yushi Fujita, Hideki Arimatsu, Takuya Fujima, "A new composite structure of PEDOT/PSS: Macro-separated layers by a polyelectrolyte brush", Polymers, 12(2), Feb 1, 2020.
- Erika Tabata, Takumi Ito, Yuki Ushioda, Takuya Fujima, "Fingerprint Blurring on a Hierarchical Nanoporous Layer Glass", Coatings, 9(10) 653, Oct, 2019.
- Fujima Takuya, Shimizu Natsuki, Arimatsu Hideki, "p-n Control of AlMgB14-Based Thermoelectric Materials by Metal Site Occupancy", Materials, 12(4), Feb 2, 2019.
- Takuya Fujima, Kentaro Uchiyama, Keita Yasumoro, Takumi Ito, Erika Tabata, "A PSS-Free PEDOT Conductive Film Supported by a Hierarchical Nanoporous Layer Glass", Macromolecular Materials and Engineering, 303(9) 1800183, Sep, 2018.
- Takuya Fujima, Hideki Arimatsu, Shota Miura, Shun Yokoyama, Ken-ichi Takagi, "n-p Type variation in thermoelectric AlMgB14-based materials by raw material mixture ratio", SOLID STATE SCIENCES, 47 51-54, Sep, 2015.
- Takuya Fujima, Eitaro Futakuchi, Tomohiro Tomita, Yoshihisa Orai, Takeshi Sunaoshi, "Hierarchical Nanoporous Glass with Antireflectivity and Superhydrophilicity by One-Pot Etching", LANGMUIR, 30(48) 14494-14497, Dec, 2014.
- Shota Miura, Hikaru Sasaki, Ken-ichi Takagi, Takuya Fujima, "Effect of varying mixture ratio of raw material powders on the thermoelectric properties of AlMgB14-based materials prepared by spark plasma sintering", JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 75(8) 951-953, Aug, 2014.
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