Molecular Dynamics Study of Microwave Heating of Water and Aqueous Solutions(Soft Matter as Structured Materials)

Abstract

マイクロ波による水の加熱過程を分子動力学法により研究し、加熱が分子回転の励起と衝突緩和によること、塩添加した水溶液の加熱率が上昇すること、結晶化した氷はあまり加熱されないことを示した。

We show by molecular dynamics simulations that liquid water is heated by applied microwaves through excitation of rotational alignment and subsequent relaxation of electric dipoles. Small addition of salt to water increases the heating rate. Crystal ice is much less heated and hydrogen-bonded molecular network remains intact under the microwaves.