A5038535122- Bone Tissue Engineering Materials
- Polymer Surface Interaction Studies
- Mesoporous Materials and Catalysis
- Luminescence Properties of Advanced Materials
- Calcium Carbonate Crystallization and Inhibition
- Collagen: Extraction and Characterization
- Lanthanide and Transition Metal Complexes
- 3D Printing in Biomedical Research
- Polyoxometalates: Synthesis and Applications
- Catalytic Processes in Materials Science
- biodegradable polymer synthesis and properties
- Chemical Synthesis and Characterization
- Dental materials and restorations
- Dental Implant Techniques and Outcomes
- Advanced Photocatalysis Techniques
- Electrospun Nanofibers in Biomedical Applications
- Conducting polymers and applications
- Silk-based biomaterials and applications
- Graphene research and applications
- Nanoplatforms for cancer theranostics
- Analytical Chemistry and Sensors
- Fiber-reinforced polymer composites
- Luminescence and Fluorescent Materials
- Additive Manufacturing and 3D Printing Technologies
- Photonic Crystals and Applications
Nagaoka University of Technology
2016-2025
Nagaoka University
2012-2021
Fusion Academy
2015-2017
Fusion (United States)
2016-2017
National Institute for Materials Science
2008-2016
Toyota Central Research and Development Laboratories (Japan)
2007-2015
Tokyo Institute of Technology
2005-2012
Toyota Motor Corporation (Switzerland)
1997-2011
Japan Society for the Promotion of Science
2011
Toyota Technological Institute
2009
Geopolymer adsorbents were prepared from silica and metakaolin in different Al Si components applied for removal of metal ions, Cs+ Pb2+, other heavy ions mixture. The geopolymer was optimized at Si/Al = 2 as adsorbent, targeting to Pb2+ separation. binding behavior well fitted Langmuir model, which proved that the metakaolin-based had multibinding adsorb ions. effective adsorption also observed independent NaCl concentration Pb2+. This meant ion geopolymers occurred under non-electrostatic...
Bone is an organic-inorganic composite with the ability to regenerate itself. Thus, several studies based on artificial interface sciences have been tried develop capable materials for effective regenerative bone tissues. Hydroxyapatite nanoparticles (HAp NPs) extensively researched in tissue engineering due compositional and shape similarity mineral excellent biocompatibility. However, HAp alone has low mechanical strength, which limits its applications. Therefore, NPs deposited...
Agave fibers were used to elaborate transparent and flexible cellulose hydrogel films as a scaffold for tissue regeneration tested by in vitro assays with NIH 3T3 fibroblast cells. Using dimethylacetamide/lithium chloride (DMAc/LiCl) system made it possible obtain solutions, prepared phase inverse method without cross-linker. The concentration of LiCl the DMAc solution was varied from 4 12 wt %. resultant showed water contents range 239–323% enough film strength 50 66 N/mm2, when changed %...
To clarify hydroxyapatite (HAp) nanocrystal formation based on the interfacial interactions with organic molecules is important for controlling dispersion states/shapes of HAp and understanding biomineralization mechanism. In this study, effects cetyltrimethylammonium bromide (CTAB) micelles process were investigated through both morphosynthesis technique molecular orbital calculations. The nanocrystals synthesized in presence CTAB exhibited a controlled rod-like shape subsequently grew up...
Apatite nanoparticles are biocompatible nanomaterials, so their film formation on biodevices is expected to provide effective bonding with living organisms. However, the biodevice–apatite interfaces have not yet been elucidated because there little experimental evaluation and discussion nanoscale interactions, as well apatite surface reactivities. Our group has demonstrated biomolecular adsorption properties a quartz crystal microbalance dissipation (QCM-D) sensor coated nanoparticles,...
Octacalcium phosphate (OCP) has been used as a bone replacement material due to its higher affinity. However, the mechanism of affinity not clarified. Since 100 crystalline plane OCP is closely involved in biological reactions during osteogenesis, it important expose fluid precisely measure interfacial reactions. In this study, plate-like crystals were fixed on conductive substrate form single-particle deposition, and thin films with exposing planes fabricated. Then, characteristics...
A quartz crystal microbalance with dissipation (QCM-D) technique was employed to detecting the protein adsorption and subsequent osteoblast-like cell adhesion hydroxyapatite (HAp) nanocrystals. The interfacial phenomena preadsorption of three proteins (albumin (BSA), fibronectin (Fn), collagen (Col)), fetal bovine serum (FBS), cells were investigated. QCM-D measured frequency shift (Δf) energy (ΔD), viscoelastic properties adlayers evaluated using ΔD–Δf plot Voigt-based model. Col...
We synthesized hydroxyapatite nanocrystals under the existence of tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium(III) (EuTH) complex to form inorganic/organic hybrid nanocrystal (EHA). Then, folic acid derivative (folate N-hydroxysuccinimidyl ester (FA-NHS)) as targeting ligand for HeLa cancer cells was immobilized on EHA by mediation both 3-aminopropyltriethoxysilane and methyltriethoxysilane molecules. Here, we investigated photofunctions based interfacial interactions between FA-NHS...
We synthesized citric acid (Cit)-coordinated Eu3+ and F– codoped hydroxyapatite (Cit/Eu:HA-F) nanoparticles (NPs) investigated their ion diffusion processes based on photoluminescence (PL) properties at the near-surfaces with thermal treatment. At 85 °C, Cit coordination layer effectively suppressed nonradiative deactivation of HA NP surfaces in PL process, quantum yield (ηint) ions reached a maximum value ca. 33%, indicating highest efficiency system. 250 was decomposed into aconitic high...
The repeatability of the adsorption and removal fibrinogen fetal bovine serum on hydroxyapatite (HAp) nanocrystal sensors was investigated by Fourier transform infrared (FTIR) spectroscopy quartz crystal microbalance with dissipation (QCM-D) monitoring technique. HAp nanocrystals were coated a gold-coated sensor electrophoretic deposition. Proteins adsorbed removed (i) ammonia/hydrogen peroxide mixture (APM), (ii) ultraviolet light (UV), (iii) UV/APM, (iv) APM/UV (v) sodium dodecyl sulfate...
The adhesion process of osteoblast-like cells on hydroxyapatite (HAp) and oxidized polystyrene (PSox) was investigated using a quartz crystal microbalance with dissipation (QCM-D), confocal laser scanning microscope (CLSM), atomic force (AFM) techniques in order to clarify the interfacial phenomena between surfaces cells. viscoelastic properties (shear viscosity (ηad), elastic shear modulus (μad), tan δ) preadsorbed protein layer interface were estimated Voigt-based model from measured...
Luminescent europium(III)-doped nanoporous silica nanospheres (Eu:NPS) were successfully synthesized, and a folate N-hydroxysuccinimidyl ester (FA-NHS) molecule as targeting ligand for cancer cells was immobilized on the nanosphere surfaces through mediation of 3-aminopropyltriethoxysilane (APTES) adlayer. The ordered nanopores preserved by immobilization, specific surface area decreased only with APTES suggesting that FA-NHS predominantly outer nanopores. photoluminescence functionalized...
A novel direct core heating fusion process is introduced, in which a preimploded predominantly heated by energetic ions driven LFEX, an extremely ultrashort pulse laser. Consequently, we have observed the D(d,n)^{3}He-reacted neutrons (DD beam-fusion neutrons) with yield of 5×10^{8} n/4π sr. Examination verified that directly collide plasma. While hot electrons heat whole volume, deposit their energies locally core, forming spots for fuel ignition. As evidenced spectrum, simultaneously...
We successfully prepared hybrid nanoparticles (NPs) with photofunctional interfaces between the citric acid (Cit) molecules and europium(III) ion (Eu3+)-doped hydroxyapatite (HA) (Eu:HA) to provide bifunctional cell-labeling cytostatic suppression. In particular, Eu:HA NPs were synthesized in presence of Cit, Cit hybridized (Cit/Eu:HA). The physicochemical properties based on interfacial Eu:HA–Cit interactions elucidated. atomic structures NP surface layers disordered by increasing...