Carbon nanotubes as probes for atomic force microscopy
Carbon nanotubes as probes for atomic force microscopy
复制标题
DOI：
10.1088/0957-4484/11/1/301
复制
发表时间：
2000-03-01
期刊：
影响因子：
3.5
通讯作者：
Hansma, PK
中科院分区：
文献类型：
--
作者：
Stevens, RMD;Frederick, NA;Hansma, PK
针尖衍生的伪影仍然是原子力显微镜（AFM）试图测量亚纳米结构时的主要限制之一。碳纳米管由于其直径小、高纵横比和高强度而代表了用作AFM针尖的理想结构。我们使用一种新的电弧放电方法来连接单碳纳米管AFM针尖。使用这些修改后的提示，我们成功地成像Tethya aurantia海绵骨针中发现的蛋白质丝。我们报告了一个模块化的板条状结构的蛋白质丝，这是以前无法观察到的与传统的原子力显微镜杠杆。
Tip-derived artifacts remain one of the chief limitations of atomic force microscopy (AFM) when attempting to measure sub-nanometre structures. Carbon nanotubes represent ideal structures for use as AFM tips because of their small diameter, high aspect ratio and high strength. We attached single carbon nanotube AFM tips using a novel are discharge method. Using these modified tips, we successfully imaged a protein filament found in sponge spicules of Tethya aurantia. We report a modular stave-like structure for the protein filament that was previously unobservable with conventional AFM cantilevers.