A5043414150- Advanced ceramic materials synthesis
- Graphene research and applications
- MXene and MAX Phase Materials
- Carbon Nanotubes in Composites
- Aluminum Alloys Composites Properties
- Boron and Carbon Nanomaterials Research
- 2D Materials and Applications
- 3D Printing in Biomedical Research
- Graphene and Nanomaterials Applications
- Advanced materials and composites
- Advanced Sensor and Energy Harvesting Materials
- Tissue Engineering and Regenerative Medicine
- Luminescence Properties of Advanced Materials
- Electrospun Nanofibers in Biomedical Applications
- Bone Tissue Engineering Materials
- Thermal properties of materials
- Nanotechnology research and applications
- Microstructure and mechanical properties
- Smart Materials for Construction
- Tribology and Wear Analysis
- Hydrogels: synthesis, properties, applications
- Neuroscience and Neural Engineering
- Pluripotent Stem Cells Research
- Advanced Thermoelectric Materials and Devices
- Concrete and Cement Materials Research
National Institute for Materials Science
2013-2025
University of Tsukuba
2014-2019
Tohoku University
2008-2011
Abstract Layered MAX phases are exfoliated into 2D single layers and multilayers, so‐called MXenes. Using first‐principles calculations, the formation electronic properties of various MXene systems, M 2 C (M = Sc, Ti, V, Cr, Zr, Nb, Ta) N Zr) with surfaces chemically functionalized by F, OH, O groups, examined. Upon appropriate surface functionalization, Sc C, Ti Zr Hf MXenes expected to become semiconductors. It is also derived theoretically that Cr magnetic. Thermoelectric calculations...
Two-dimensional transition metal carbides or nitrides, so-called MXenes, have already found applications to store massive amounts of energy. Here, by considering the thermoelectric properties various it is revealed that some MXenes may also find in energy conversion devices.
Dielectrophoresis is used to align carbon nanotubes (CNTs) within gelatin methacrylate (GelMA) hydrogels in a facile and rapid manner. Aligned GelMA-CNT show higher electrical properties compared with pristine randomly distributed CNTs GelMA hydrogels. The muscle cells cultured on these materials demonstrate maturation As service our authors readers, this journal provides supporting information supplied by the authors. Such are peer reviewed may be re-organized for online delivery, but not...
Biological scaffolds with tunable electrical and mechanical properties are of great interest in many different fields, such as regenerative medicine, biorobotics, biosensing. In this study, dielectrophoresis (DEP) was used to vertically align carbon nanotubes (CNTs) within methacrylated gelatin (GelMA) hydrogels a robust, simple, rapid manner. GelMA-aligned CNT showed anisotropic conductivity superior compared pristine GelMA containing randomly distributed CNTs. Skeletal muscle cells grown...
Considering the recent breakthroughs in synthesis of novel two-dimensional (2D) materials from layered bulk structures, ternary transition metal borides, known as MAB phases, have come under scrutiny a means obtaining 2D so-called MBenes. Here, based on set phonon calculations, we show dynamic stability many Al-containing MAlB (M = Ti, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc), M2AlB2 (Sc, Zr, Tc, Fe, Rh, Ni), M3Al2B2 Sc, T, Ru, M3AlB4 Fe), and M4AlB6 Mo). By comparing formation energies these...
MAX phases are a large family of layered ceramics with many potential structural applications. A set first-principles calculations was performed for M(2)AlC and M(2)AlN (M = Sc, Ti, Cr, Zr, Nb, Mo, Hf, or Ta) as well hypothetical M(2)AlB to investigate trends in their electronic structures, formation energies, various mechanical properties. Analysis the calculated data is used extend idea that elastic properties can be controlled according valence electron concentration. The concentrationcan...
We proposed a facile, low cost, and green approach to produce stable aqueous graphene dispersions from graphite by sonication in bovine serum albumin (BSA) solution for biomedical applications. The production of high-quality was confirmed using microscopy images, Raman spectroscopy, UV-vis XPS. In addition, ab initio calculations revealed molecular interactions between BSA. processability demonstrated fabricating conductive mechanically robust hydrogel–graphene materials.
Since the discovery of carbon nanotubes (CNTs), commonly referred to as ultimate reinforcement, main purpose for fabricating CNT–ceramic matrix composites has been mainly improve fracture toughness and strength ceramic materials. However, there have many studies reporting marginal improvements or even degradation mechanical properties. On other hand, those claiming noticeable toughening measured using indentation, which is an indirect/unreliable characterization method, not demonstrated...
The experimental exfoliation of layered, ternary transition-metal carbide and nitride compounds, known as MAX phases, into two-dimensional (2D) nanosheets, is a great development in the synthesis novel low-dimensional inorganic systems. Among Mo-containing ones might be considered source for obtaining Mo2C nanosheets with potentially unique properties, if they could exfoliated. Here, by using set first-principles calculations, we discuss effect interlayer 'A' element on Mo2AC (A = Al, Si, P,...
Strong intergraphene shear resistance is engineered in multi-walled carbon nanotubes (MWCNTs) by embedding the into a compressive-stressing ceramic environment to exploit exceptional strength of its inner graphene walls during tensile loading. A dramatic enhancement failure load MWCNT achieved and new "multi-wall" mechanism discovered.
A highly concentrated 3D macrostructure of individual multiwalled carbon nanotubes (MWCNTs) is practically realized in a ceramic environment with poreless/intimate interfaces by scalable aqueous colloidal approach. This concept dramatically improves not only the transport property and network connectivity MWCNT macrostructures (a DC-conductivity nearly 5000 S m−1) but also strain tolerance environment. Such low-cost novel MWCNT/ceramic hybrids have many potential functional structural...
Multi-walled carbon nanotubes (MWCNTs) with outstanding mechanical properties are considered as an ultimate reinforcement for conventional metals such aluminum (Al), though they require uniform dispersion and intimate contacts the host metal matrix. However, bundled structure of chemically stable, pristine MWCNTs has been main challenge to achieving expected structural reinforcement. In addition, sole contribution in strengthening matrix not recognized yet, due concurrent mechanisms metal's...
Zirconium diboride (ZrB2) ceramic possesses a unique combination of nice mechanical performance, high melting point (> 3000 °C) and great high-temperature oxidation resistance (up to 1600 °C), which makes it promising material system for ever-increasing ultra-high temperature (UHT) applications. However, ZrB2 suffers from poor performance at UHTs, could strongly limit its applications UHT. Here, we successfully demonstrate that texturing is an effective strategy greatly enhance the flexural...
Graphene was embedded into the structure of mouse embryoid bodies (EBs) using hanging drop technique. The inclusion 0.2 mg per mL graphene in EBs did not affect viability stem cells. However, decreased cell proliferation, probably by accelerating differentiation. also enhanced mechanical properties and electrical conductivity EBs. Interestingly, cardiac differentiation EB–graphene significantly greater than that at day 5 culture, as confirmed high-throughput gene analysis. Electrical...
Carbon nanotubes (CNTs) have a remarkable load-bearing ability. Recently, however, multi-walled CNTs (MWCNTs) been shown to possess dramatically higher ability when intimately embedded in an oxide ceramic (Al2O3), because the load could be transferred not only their outermost walls but also generally unloaded inner via strong interwall shear resistance originating from residual compressive stresses. This phenomenon is characterized by uncommon, highly energy-dissipating, multiwall-type...