Abstract
The importance of water is generally recognized; the human body contains about 70 % water by mass and water is widely used as a solvent for chemical reactions, and plants use water in forming starch. Despite this, there remain a number of mysteries in the science of water. At the atomic level, water molecules are linked by hydrogen bonds to form large clusters. Here, we apply the DV-Xα method to calculate the electronic structures of two water molecules for the case when the hydrogen bond between them is broken. Because the bonding electrons exist in a plasma-like state in the water molecule after breaking of the hydrogen bond, electromagnetic waves in the near-infrared through terahertz region are emitted as a result of the free movement of electrons in water with broken hydrogen bonds, which is known as minimal catalyst water (MICA water). This energy can be transferred to other substances. As a result, MICA has a variety of applications, such as the reduction of exhaust gases from automobiles or keeping foods fresh; the mechanism of such applications can be explained in terms of the activation of dinitrogen by MICA energy. Another application of MICA is deodorization of rooms by MICA-treated fluorescent lamps or activated ceramic honeycombs.
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Acknowledgements
We express our gratitude to Professor H. Adachi for use of the DV-Xα program and to Dr. K. Nakagawa for use of the TESDA program and also to Dr. J. Yasui of Canon for many discussions. For the sophisticated NMR analysis we thank Dr. T. Takayama and Mr. T Igarashi at Kanagawa University, and we express our gratitude to Professor M. Yasui of Keio University for discussions regarding hydrogen bonds in the membrane protein aquaporin. We thank Mr. A. Hanawa of the Institute of Isotope Analysis Co. Ltd. for performing the isotopic measurements. We also express our gratitude to Professor M. Nakao and Mr. H. Ishitani of Kyushu University of Technology for performing SQUID measurements, and to Dr S. Ohno of Tohoku University for performing terahertz measurements.
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Sugihara, S., Igarashi, T., Suzuki, C., Hatanaka, K. (2015). Microscopic Approach to Water by Using the DV-Xα Method, and Some Innovative Applications. In: Ishii, T., Wakita, H., Ogasawara, K., Kim, YS. (eds) The DV-Xα Molecular-Orbital Calculation Method. Springer, Cham. https://doi.org/10.1007/978-3-319-11185-8_10
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