Yuji Hirai

Yuji Hirai
Yamagata University | YU · Department of Chemistry and Chemical Engineering

Doctor of Engineering

About

11
Publications
599
Reads
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17
Citations
Citations since 2017
11 Research Items
17 Citations
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201720182019202020212022202301234567
201720182019202020212022202301234567
201720182019202020212022202301234567

Publications

Publications (11)
Article
In recent years, flexible-electronics has become an emerging field of R&D. While plastics are typical substrates to print the circuitries, paper is an interesting alternative. Recently, paper-based touch sensor with printed silver nanoparticle has been demonstrated to work even after repeated bending and wrapping tests [1]. High porosity is also an...
Article
Metal-organic frameworks (MOFs) made of inorganic ions and organic linkers are attracting attention for their unique properties because of their widely open porous crystal structure. We have recently succeeded in microwave-assisted hydrothermal synthesis of Zn-Terephthalate (TPA) MOF particles [1]. Several different types such as Zn 3 (OH) 4 (TPA)・...
Article
Metal-organic frameworks (MOFs) made of inorganic ions and organic linkers are attracting attention for their unique properties because of their widely open porous crystal structure. We have recently succeeded in microwave-assisted hydrothermal synthesis of Zn-Terephthalate (TPA) MOF particles [1]. Several different types such as Zn 3 (OH) 4 (TPA)・...
Article
Full-text available
The honeycomb-structured film has advantages such as high wettability and high surface area. This structure and properties are suitable for the capacitor electrode. In this study, the electrode structure is controlled by the synthesis of MnO 2 nanoparticles using the breath figure method. The electrode performance was calculated by electrochemical...
Article
Metal organic frameworks (MOFs) are widely studied because of their unique structures and wide applications represented by gas separation, gas sensor and electrocatalysis. In our previous research, 4 types of Zn-telephthalic acid (TPA) MOFs were synthesized via microwave hydrothermal reaction by varying pH of precursor solution. One of the Zn-TPA M...
Article
Metal organic flamework (MOF) is a class of inorganic / organic compound whose crystalline structure is made by bridging inorganic ions with organic ligands. Due to its open porous structure, special functionalities are anticipated in applications such as sensors, catalysis and batteries. Variation of MOFs is almost unlimited, not only by choice of...
Article
Over the past few years, electric power generation from renewable resources such as wind and sun light have already become cheaper than those from fossil fuels and nuclear. However, production of such renewable electricity naturally fluctuates depending on weather. The lack of technically and economically viable systems to store the surplus still h...
Article
Full-text available
Microwave-assisted hydrothermal synthesis of ZnO nanoparticles employing three isomers of benzene dicarboxylic acids, phthalic acid (PA), isophthalic acid (IPA) and terephthalic acid (TPA) as structure directing agents (SDAs) revealed their strength in the order of TPA > PA > TPA, for the synthesis with solution pH > 10, causing anisotropic crystal...
Article
Polymer MEMS/NEMS is a fast growing field with applications in lab on a chip (LOC), μTAS to new sensors and actuators to flexible micro-nano devices [1, 2,3]. While many polymers have been employed to realize flexible MEMS and microfluidic devices such as stated above, polydimethylsiloxane (PDMS), a silicone based elastomer, has been widely used be...

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