Rahe Philipp, Schütte Jens, Schniederberend Werner, Reichling Michael, Abe Masayuki, Sugimoto Yoshiaki, Kühnle Angelika
Institut für Physikalische Chemie, Fachbereich Chemie, Johannes Gutenberg-Universität Mainz, Jakob-Welder-Weg 11, 55099 Mainz, Germany.
Rev Sci Instrum. 2011 Jun;82(6):063704. doi: 10.1063/1.3600453.
The acquisition of dense 3D data sets is of great importance, but also a challenge for scanning probe microscopy (SPM). Thermal drift often induces severe distortions in the data, which usually constrains the acquisition of dense data sets to experiments under ultra-high vacuum and low-temperature conditions. Atom tracking is an elegant approach to compensate for thermal drift and to position the microscope tip with highest precision. Here, we present a flexible drift compensation system which can easily be connected to existing SPM hardware. Furthermore, we describe a 3D data acquisition and position correction protocol, which is capable of handling large and non-linear drift as typically present in room temperature measurements. This protocol is based on atom-tracking for precise positioning of the tip and we are able to acquire dense 3D data sets over several hours at room temperature. The performance of the protocol is demonstrated by presenting 3D data taken on a CaCO(3)(10 ̅14) surface with the data density being as large as 85×85×500 pixel.
获取密集的三维数据集非常重要，但对于扫描探针显微镜（SPM）来说也是一项挑战。热漂移常常会在数据中引起严重失真，这通常将密集数据集的获取限制在超高真空和低温条件下的实验中。原子跟踪是一种补偿热漂移并以最高精度定位显微镜尖端的巧妙方法。在此，我们展示了一种可轻松连接到现有SPM硬件的灵活漂移补偿系统。此外，我们描述了一种三维数据采集和位置校正协议，该协议能够处理室温测量中通常出现的大的和非线性的漂移。该协议基于用于尖端精确定位的原子跟踪，并且我们能够在室温下数小时内获取密集的三维数据集。通过展示在CaCO(3)(10 ̅14)表面上获取的三维数据来证明该协议的性能，数据密度高达85×85×500像素。
