Ag clusters have been attracted due to their unique catalytic properties. However, Ag is less thermally stable than other noble metals and thus aggregates easily. In this study, Ag clusters (1~2 nm) were stabilized on the TiO2 surface by strong metal-support interactions (SMSIs) which were induced in a combustion field. As a result, Ag clusters in 20wt%Ag/TiO2 were stable at 350￮C for 2 hours.
Hemolysis assay using red blood cells (RBCs) has been widely used as the simplest cytotoxicity test for nanoparticles (NPs). However, the hemolytic mechanism of NPs is still not well understood. In this study, the author focused on the silica particle properties (size and surface functional group) as well as the exposure environments (solution temperature and addition of proteins) to report the results of (i) the number of silica NPs adhered to an RBC, (ii) the hemolysis assay, and (iii) the silica-induced aggregation/dispersion of RBCs. Consequently, an overall picture of the hemolytic action mechanism of silica NPs was shown.
The measurement of fine particles using Gabor holography has been limited to laboratory use due to two problems arising from the measurement principle and the long numerical computation time, making online and inline measurements difficult. In this study, the development of a particle measurement module of a phase retrieval holography using a single-board computer with a graphics processing unit (GPU) has shown that it can be used for online and inline measurements in powder production processes.
It is important to understand the relationship between the powders’ structure and their functionalities. The Mahalanobis-Taguchi system (MTS) has been utilized because that effective variables which improve accuracy of classification can be visualized. The surface-roughness-related variables were the key to classify into male/female of Japanese beetles larval droppings. Considering that binder concentration in the females’ dropping was higher than in the males, it could be deformed during molding process through the larval gut. The MTS can be the effective way to improve the accuracy of the classification by visualization of the relationship between powder structure and functionalities without individual differences.
Trimeric and tetrameric cyclic aromatic molecules have been synthesized utilizing the flexibility of the Si-Si single bond. The changes in the structure and physical properties of these molecules as a function of temperature have been also reported.
Formation of Lipid Nanoparticles and Elucidation of Formation Mechanism
Released on J-STAGE: June 10, 2017 | Volume 24 Pages 74-78
Design in Adsorption Characteristics of Porous Coordination Polymer Particles by Controlling Particle Size and Shape
Released on J-STAGE: February 03, 2017 | Volume 23 Pages 173-179
The 8th Asian Particle Technology Symposium APT2021
Released on J-STAGE: May 25, 2022 | Volume 29 Pages 128-131
Transformation of Carbon Dioxide by Diamond Powders
Released on J-STAGE: February 03, 2017 | Volume 23 Pages 114-118
A Numerical Simulation Method for Analysis of Slurry Viscosity
Released on J-STAGE: February 03, 2017 | Volume 23 Pages 199-202
Masatoshi SAKAI, Mikio SAKAI