[水及び水溶液の物理化学的特性に対する低強度ミリ波の非熱作用] med./bio.

To compare the effects of millimeter waves and infrared irradiation on thermal properties, specific absorption rate, specific electrical conductivity and hydrogen peroxide content of distilled water and physiological solutions.

The authors hypothesized that water dipole vibration-induced changes of water dissociation (i.e. H₂O + H₂O = H₃O⁺ + OH^-) upon millimeter wave exposure could serve as the main mechanism through which its non-thermal effect on water physicochemical properties is realized. In contrast, it was suggested that an electromagnetic field near infrared frequencies is unable to produce vibration of water molecule dipole.

• water and a physiological solution

The thermal effect of millimeter wave exposure (i.e. temperature increase of the solutions) appeared only after the first minute of irradiation, while the infrared heating started from the first minute of exposure. The heat fusion time of frozen millimeter wave-exposed aqueous solutions was significantly shorter than of sham exposed and infrared-treated solutions. Additionally, millimeter wave exposure had a time-dependent elevation effect on water specific electrical conductivity and SAR value, which was accompanied by the increase of hydrogen peroxide formation.
The authors suggest that the millimeter wave-induced vibration of water dipole molecules caused the non-thermal changes of physicochemical properties of distilled water and the physiological solution, which promoted the formation of hydrogen peroxide in water.