로그인

National Institute for Materials Science (NIMS)

3 ARTICLES PUBLISHED IN JoVE

Chemistry

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

Yujin Cho^1,3, Benjamin Dierre², Takashi Sekiguchi³, Takayuki Suehiro⁴, Kohsei Takahashi⁴, Takashi Takeda⁴, Rong-Jun Xie⁴, Yoshinobu Yamamoto⁴, Naoto Hirosaki⁴

¹Graduate School of Pure and Applied Science, University of Tsukuba, ²CNRS — Saint-Gobain, UMI 3629, Laboratory for Innovative Key Materials and Structures (LINK), ³Nano Device Characterization Group, National Institute for Materials Science (NIMS), ⁴Sialon Unit, National Institute for Materials Science (NIMS)

An excellent chemical and luminescence stabilities of (oxy)nitride phosphors present it as an promising alternative to currently used sulfide and oxide phosphors. In this paper, we present the way to investigate its local luminescence properties using low-energy cathodoluminescence (CL).

Chemistry

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Norihiro Suzuki^1,2, Minoru Osada³, Motasim Billah^3,4, Yoshio Bando^3,4, Yusuke Yamauchi^5,6, Shahriar A. Hossain^3,4

¹Research Institute for Science and Technology (RIST), Tokyo University of Science (TUS), ²International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), ³International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), ⁴Australian Institute for Innovative Materials (AIIM), University of Wollongong, ⁵School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, ⁶Department of Plant & Environmental New Resources, Kyung Hee University

Here, we present a protocol for the synthesis of porous barium titanate (BaTiO₃) thin film by a surfactant-assisted sol-gel method, in which self-assembled amphipathic surfactant micelles are used as an organic template.

Environment

A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid

Babasaheb M. Matsagar¹, Shahriar A. Hossain^2,3, Tofazzal Islam⁴, Yusuke Yamauchi^2,3,5,6, Kevin C.-W. Wu¹

¹Department of Chemical Engineering, National Taiwan University, ²International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), ³Australian Institute for Innovative Materials (AIIM), University of Wollongong, ⁴Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, ⁵School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, ⁶Department of Plant and Environmental New Resources, Kyung Hee University

We present a protocol for the synthesis of C5 sugars (xylose and arabinose) from a renewable non-edible lignocellulosic biomass (i.e., jute) with the presence of Brønsted acidic ionic liquids (BAILs) as the catalyst in water. The BAILs catalyst exhibited better catalytic performance than conventional mineral acid catalysts (H₂SO₄ and HCl).