Under certain conditions, electrophoretic deposition (EPD) of single-wall carbon nanotubes (SWCNTs) onto metal at the base of nanoscale insulating windows can result in a single SWCNT per window, bonded at one end to the metal. During EPD charge, buildup on the insulator creates electrostatic lenses at the windows that control the trajectory of the SWCNTs. The aim is to develop a reproducible process for deposition of individual vertically oriented SWCNTs into each window to enable novel devices. The length of the SWCNTs is shown to be the most critical parameter in achieving results that could be used for devices. In particular, single nanotube deposition in windows by EPD was achieved with SWCNTs with lengths on the order of the window depth. By performing current vs voltage (IV) measurements against a platinum wire in a phosphate buffer and by modeling the data, the presence of the nanotube can be detected, the contact interface can be studied, and the nanotube’s viability for device applications can be determined. These results provide a basis for process integration of vertical SWCNTs using EPD.

中文翻译：

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用纳米静电透镜改进垂直单壁碳纳米管的电泳沉积

在某些条件下，将单壁碳纳米管（SWCNT）电泳沉积（EPD）到纳米级绝缘窗口底部的金属上，会导致每个窗口有一个SWCNT，并在一端与金属结合。在进行EPD充电期间，绝缘子上的积聚会在控制SWCNT轨迹的窗口处形成静电透镜。目的是开发一种可复制的工艺，以将单个垂直取向的SWCNT沉积到每个窗口中，以实现新颖的器件。结果表明，SWCNT的长度是获得可用于设备的结果的最关键参数。特别地，通过EPD在窗户中的单纳米管沉积是通过SWCNT实现的，SWCNT的长度约为窗户深度。通过在磷酸盐缓冲液中对铂丝进行电流对电压（IV）的测量并通过对数据进行建模，可以检测到纳米管的存在，可以研究接触界面，并可以确定纳米管在设备应用中的可行性。这些结果为使用EPD进行垂直SWCNT的工艺集成提供了基础。