Some properties and functions of water treated under magnetic field were examined. No change in properties of pure water distilled from ultrapure water in vacuum was observed by magnetic treatment. However, when the same magnetic treatment was carried out after the distilled water was exposed to O2, water properties such as vibration modes and electrolytic potential were changed. The degree of magnetic treatment effect on water was quantitatively evaluated by contact angle.

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We have investigated recrystallization of an electrochemically roughened silver electrode surface in Ar-saturated water, using cyclic voltammetry (CV), Auger electron spectroscopy (AES), and tapping mode atomic force microscopy (TMAFM). Comparison of CVs before and after 92 h relaxation in water indicates that surface flattening occurs at room temperature when the roughened Ag is in contact with water. An AES spectrum of the Ag surface before the relaxation shows that chlorine still remains on the surface, probably in the form of AgCl. We determined the roughness exponents (α) for the roughened Ag surfaces before and after the relaxation from the slopes of the linear regions observed in plots of log (the interface width) vs log (length scale) calculated from TMAFM data. At larger length scales than the average Ag nodule size, αs were 0.50±0.02 and 0.64±0.02 for the roughened surfaces before and after the relaxation, respectively. These results suggest that the scaling theory may be applicable to the recrystallization process at the submicron level.

We have observed surface features on hydrocarbons deposited on Au(111) from the laboratory atmosphere in water and in a sodium chloride aqueous solution, using tapping mode atomic force microscopy (TMAFM). TMAFM images of the Au(111)/water interface reveal that the features are pancake-shaped structures with the range of measured dimensions of 20–150 nm in width and 0.5–20 nm in height, and that many features reappear at almost the same sites immediately after the disruption of the features by contact mode AFM imaging. The results of our TMAFM observations imply that the features are nanosized bubbles as those reported previously, and that dissolved gas nucleates at specific sites of the hydrophobized Au(111) surface at low, temporal gas supersaturations under atmospheric pressure.