Distinct Chemical Contrast in Adhesion Force Images of Hydrophobic–Hydrophilic Patterned Surfaces Using Multiwalled Carbon Nanotube Probe Tips
Distinct Chemical Contrast in Adhesion Force Images of Hydrophobic–Hydrophilic Patterned Surfaces Using Multiwalled Carbon Nanotube Probe Tips
复制标题
使用多壁碳纳米管探针尖端的疏水-亲水图案表面的粘附力图像中的明显化学对比
DOI：
10.1143/jjap.47.3594
复制
发表时间：
2008
影响因子：
1.5
通讯作者：
H. Tokumoto
中科院分区：
文献类型：
--
作者：
H. Azehara;Yuka Kasanuma;K. Ide;K. Hidaka;H. Tokumoto
在本文中，我们描述了用于原子力显微镜的大直径碳纳米管探针尖端（CNT尖端）的制造过程，CNT尖端的尖端化学，以及它们的优点，这些优势来自于环境大气中通过微接触印刷方法制备的图案化疏水和亲水自组装单层上的粘附力成像的研究。磷酸盐缓冲溶液中的力滴定测量表明，碳纳米管尖端在其末端保留了羧基。在粘附力成像中，与使用氮化硅尖端的情况相比，图案化表面获得了明显的化学对比度。鲜明对比的起源是根据以羧基为特征的尖端化学特征以及由于碳纳米管固有的疏水性而在尖端-样品界面周围引起的水毛细管力可能减弱的情况进行讨论的。
In this paper, we describe a fabrication procedure for large-diameter carbon nanotube probe tips (CNT tips) for atomic force microscopy, the tip-end chemistry of the CNT tips, and their advantage drawn from the study of adhesion force imaging in an ambient atmosphere on a patterned hydrophobic and hydrophilic self-assembled monolayer, which has been prepared by a microcontact printing method. Force titration measurements in phosphate buffer solutions reveal that the CNT tip has retained carboxyl groups at its end. In adhesion force imaging, a distinct chemical contrast is obtained for the patterned surfaces as compared to a case using a silicon nitride tip. The origin of the distinct contrast is discussed in terms of the tip-end chemistry featured by carboxyl groups and a possible weakening of capillary forces of water caused at around the tip–sample interface because of the intrinsically hydrophobic nature of CNTs.
影响因子：
2.8
作者：
Kuwahara, Shota;Akita, Seiji;Shinohara, Hisanori
通讯作者：
Shinohara, Hisanori