X-ray-induced changes in wettability.
We observed that hard X-ray irradiation modifies the wettability of a variety of inorganic materials. The smooth surfaces of all tested inorganic materials (ZnO, p-Si, Al2O3, SrTiO3, TiN, ZnS, CuO, Ag2O, and Cr2O3) change during irradiation to a state of superhydrophilic wettability, and such changes are explained by the accumulation of positive surface charges by photoelectron emission. The initial wettability state is re-established within several minutes of storage in deionized water.
Kwon
Yong Bum
YB
X-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, South Korea.
Weon
Byung Mook
BM
Won
Kyu Hwang
KH
Je
Jung Ho
JH
Hwu
Yeukuang
Y
Margaritondo
Giorgio
G