High-throughput preparation of multinary liquid, thin-film and powder library by combinatorial electrostatic atomization
- PDF / 149,477 Bytes
- 6 Pages / 612 x 792 pts (letter) Page_size
- 34 Downloads / 220 Views
0894-LL03-31.1
High-throughput preparation of multinary liquid, thin-film and powder library by combinatorial electrostatic atomization system. Kenjiro Fujimoto, Shigeru Ito, Satoru Inoue1 and Mamoru Watanabe1 Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan 1 National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. ABSTRACT A newly developed high-throughput exploration system “M-ist Combi” can control mixing ration of five-component compounds. Furthermore, the M-ist Combi system can also be obtained not only thin film but also powder and liquid libraries by controlling applied voltage and used flexibly in either a normal atmosphere or controlled atmosphere. By combining the M-ist Combi system with combinatorial XRD apparatus, we successfully completed the high-throughput powder preparation and phase identification of over 150 samples in one day. INTRODUCTION High-throughput exploration of functional materials by using combinatorial PLD method and so on were employed in field of electronic, catalytic, optical and luminescent property [1-5]. In case of using the alkali metal and a few of other elements, however, it is difficult to obtain stoichiometric compounds by means of vacuum equipment. We have hitherto developed a combinatorial robot system that fully automated the process of inorganic powder preparation, from the weighing and mixing of the starting materials to the processing of the compounds in an electronic furnace, based on a conventional solid state reaction process in air [6-8]. These systems have proven to be highly effective, but it must be applied separately when the shapes of the samples produced in a series of experiments take different forms, such as thin films and powders. In this study, we developed a newly high-throughput material-exploration robot system based on electrostatic atomization technology and established software program for obtaining multicomponent library more than ternary compounds. In electrostatic atomization, materials to be deposited on a grounded substrate are atomized by applying a high voltage to the solution. The technique has recently been used to prepare thin films for lithium battery electrode materials [9] and solid oxide fuel cell (SOFC) materials [10]. Electrostatic atomization has also been reported to be effective in delivering stoichiometric compounds from starting materials containing alkali metals. Control of the applied voltage may make it possible to prepare powders in addition to thin films, and the use of the system in various controlled atmospheres is also feasible. In this paper we show combinatorial electrostatic atomization system, “M-ist Combi”
0894-LL03-31.2
and its application. DEVICE CONFIGURATION The M-ist Combi system for combinatorial electrostatic atomization is made up of the following modules: a high-voltage power supply, a unit for feeding multiple solutions, a robot system for controlling the atomizing position, and a temperature control unit attached to the thermo-plate to dry the atom
Data Loading...
