Fluorescence characterization of heavily Eu3+-doped lanthanum gallate glass spheres with high quenching concentration

2019 ◽  
Vol 44 (4) ◽  
pp. 875 ◽  
Author(s):  
Kohei Yoshimoto ◽  
Yoshinobu Ezura ◽  
Motoi Ueda ◽  
Atsunobu Masuno ◽  
Hiroyuki Inoue ◽  
...  
Keyword(s):  
Lanthanum Gallate ◽  
Glass Spheres ◽  
Gallate Glass

Fabrication and Characterization of Ni-Doped Ceria Anode-Supported Cells Using Lanthanum Gallate-Based Electrolyte

2019 ◽  
Vol 16 (51) ◽  
pp. 171-179
Author(s):  
Hiroyuki Yoshida ◽  
Toru Inagaki ◽  
Koji Hashino ◽  
Mitsunobu Kawano ◽  
Hideyuki Nagahara ◽  
...  
Keyword(s):  
Lanthanum Gallate ◽  
Doped Ceria ◽  
Fabrication And Characterization

Surface Characterization of Polymer Composite Using Bearing Area Curve

2010 ◽  
Author(s):  
Lorena Deleanu ◽  
Gabriel Andrei ◽  
Laura Maftei
Keyword(s):  
Retention Index ◽  
Surface Characterization ◽  
Tribological Behavior ◽  
Fluid Retention ◽  
Average Pressure ◽  
Glass Spheres ◽  
Test Parameters ◽  
Surface Topographies ◽  
Pin On Disk

This paper presents an analysis of several 3D parameters based on bearing area curve in order to use the information for establishing the influence of sliding regime against steel on the tribological behavior of a composite class with polyamide matrix and 1% of black carbon. There were done pin-on-disk tests for different concentrations of micro glass spheres (MGS): 2.5, 5, 10, 20, 30 and 50% (wt), respectively. The polymer was tested under similar conditions in order to have a reference basis and to point out the improvement in tribological behavior when adding this reinforcement material. The surface topographies were registered with the help of PRO500 3D (stylus) Profilometer. The test parameters in dry regime were: sliding speed 0.5, 1.0 and 1.5 m/s, average pressure 1, 2 and 3 MPa, respectively. There were analyzed the influence of MGS concentration and sliding regime on wear as mass loss of the composite discs, after 10,000 m of sliding, the friction coefficient and several 3D parameters related to the bearing area curve, determined from raw profiles (surface bearing index – Sbi, core fluid retention index – Sci, valley fluid retention index, Svi, reduced summit height, Spk, core roughness depth, Sk, and reduced valley depth, Svk).

scholarly journals Fabrication and characterization of thermoresponsive composite carriers: PNIPAAm-grafted glass spheres

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 222-233
Author(s):  
Xiaoguang Fan ◽  
Liyan Wu ◽  
Lei Yang
Keyword(s):  
Intelligent Systems ◽  
Three Dimensional ◽  
Spray Coating ◽  
Product Yield ◽  
Glass Sphere ◽  
Characteristic Functional ◽  
Coating Technology ◽  
Glass Spheres ◽  
Preparation Strategy

Abstract Processing capacity and product yield of three-dimensional (3D) smart responsive carriers are markedly superior to those of two-dimensional substrates with the same compositions due to the special structure; therefore, more attempts have been made to develop the 3D intelligent systems in recent decades. A novel preparation strategy of thermoresponsive glass sphere-based composite carriers was reported in this study. First, PNIPAAm copolymers were synthesized by free-radical polymerization of N-isopropylacrylamide (NIPAAm), hydroxypropyl methacrylate (HPM), and 3-trimethoxysilypropyl methacrylate (TMSPM). Then, the copolymer solution was sprayed on the surfaces of glass spheres using a self-made bottom-spray fluidized bed reactor, and the bonding between copolymers and glass spheres was fabricated by thermal annealing to form PNIPAAm copolymer/glass sphere composite carriers. The coating effects of PNIPAAm copolymers on sphere surfaces were investigated, including characteristic functional groups, surface microstructure, grafting density, equilibrium swelling, as well as biocompatibility and potential application for cell culture. The results show that the temperature-responsive PNIPAAm copolymers can be linked to the surfaces of glass spheres by bottom-spray coating technology, and the copolymer layers can be formed on the sphere surfaces. The composite carriers have excellent thermosensitivity and favorable biocompatibility, and they are available for effective cell adhesion and spontaneous cell detachment by the use of smart responsiveness.

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