8 research outputs found
Flow Structures that Affect the Transport Regime of Large Wood Pieces in a Stream Channel
These files are the dataset (csv files for contour graphics and FFT results) of our research that investigate the flow structures that affect the transport regime of large wood pieces in an open channel. Some files of this dataset which illustrates experimental results were originally published by Akahori et al. (2014). https://doi.org/10.2208/jscejhe.70.I_691
FFT results were corrected to fix units of vertical axes and some errors on lateral axes on 06/16/2022.</p
Comparison between exercise and control groups before and after an intervention.
Comparison between exercise and control groups before and after an intervention.</p
Mesoporous Silica Nanoparticles with Remarkable Stability and Dispersibility for Antireflective Coatings
Mesoporous Silica Nanoparticles with Remarkable Stability and Dispersibility for Antireflective Coating
Interfacial Conductivity Enhancement and Pore Confinement Conductivity-Lowering Behavior inside the Nanopores of Solid Silica-gel Nanocomposite Electrolytes
Solid
nanocomposite electrolytes (nano-SCEs) that exhibit higher
ionic conductivity than the individual confined electrolyte were investigated
for high-performance solid-state batteries. Understanding the behavior
of Li-ion conduction through the pores is important to design ideal
nanoporous structures for nano-SCEs, which are composed of an ionic
liquid electrolyte (ILE) in a highly porous (∼90%) silica matrix.
To establish the relationship between the pore structure of the silica
matrix and the ionic conductivity of the solid nanocomposite, the
liquid electrolyte fraction was successfully extracted from the nano-SCE
to reveal the fragile porous silica matrix. A careful drying using
the CO2 supercritical drying method helps in sustaining
the original structure, preventing its collapse due to surface tension.
The pore size distribution, Brunauer–Emmett–Teller (BET)
surface area, and porosity were characterized using scanning electron
microscopy, transmission electron microscopy, and N2 adsorption/desorption
techniques. Our results revealed a wide size distribution of macropores
and mesopores in the silica matrix. The pore size increased and the
effective surface area decreased with increasing ILE/SiO2 molar ratio. The interface conductivity enhancement was found to
increase with the thickness of the adsorbed (ice-like) bound-water
layer on the silica surface, confirming that the strong hydrogen bonding
of the adsorbed ionic liquid molecules on the bound-water layer causes
the conduction promotion effect in the nano-SCE. In addition, a large
number of small pores lead to a severe pore confinement effect that
results in a decreased conductivity due to the increasing viscosity
of the ILE filling the pores. The conductivity can be improved by
realizing a nano-SCE with an optimized pore size to minimize the pore
confinement effect
