Control wettability of the hydrogen-terminated diamond surface and the oxidized diamond surface using an atomic force microscope
Control wettability of the hydrogen-terminated diamond surface and the oxidized diamond surface using an atomic force microscope
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DOI：
10.1016/s0925-9635(02)00373-4
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发表时间：
2003-03-01
影响因子：
4.1
通讯作者：
Kawarada, H
中科院分区：
文献类型：
--
作者：
Kaibara, Y;Sugata, K;Kawarada, H
力-距离曲线表明氢终止（H-终止）金刚石表面和AYM场辅助局部氧化（O-终止）区域之间的润湿性差异。使用亲水性（硅与天然氧化物）的针尖和疏水性（涂有金）的针尖作为AFM针尖，粘附力映射测量表明，H-终止的表面是疏水性的，O-终止的表面是亲水性的。在真空中加热后，两个表面之间的粘附力的差异减小。这意味着吸头和样品表面上吸附的水会影响粘附力。作为替代测量，进行H封端表面和化学氧化表面的接触角测量。证明了氧化表面比H-封端表面更亲水，并且其表面能来自于表面极性，例如涉及氢键和电偶极子的表面能是H-封端表面的两倍。(C)2003 Elsevier Science B.V保留所有权利。
The force-distance curve indicates the difference in wettability between the hydrogen-terininated (H-terminated) diamond surface and the AYM-field-assisted local oxidized (O-terminated) area. Using a hydrophilic (silicon with native oxide) tip and a hydrophobic (coated with gold) tip as AFM tips, the adhesion force mapping measurement shows that the H-terminated surface is hydrophobic and that the O-terminated surface is hydrophilic. After heating in vacuum, the difference in the adhesion force between two surfaces decreased. This means that water adsorbed on the tip and sample surfaces affects the adhesion force. As an alternative measurement, the contact angle measurement of the H-terminated surface and the chemically oxidized surface was performed. It is proved that the oxidized surface is more hydrophilic than the H-terminated surface and that its surface energy is derived from surface polarity such as that involved in hydrogen bonding and electric dipole which is twofold that the H-terminated surface. (C) 2003 Elsevier Science B.V All rights reserved.