Postprocessing Algorithm for Driving Conventional Scanning Tunneling Microscope at Fast Scan Rates
| العنوان: | Postprocessing Algorithm for Driving Conventional Scanning Tunneling Microscope at Fast Scan Rates |
|---|---|
| المؤلفون: | Xianqi Li, An-Ping Li, Yunmei Chen, Xiaoguang Zhang, Jewook Park, Hao Zhang |
| المصدر: | Scanning, Vol 2017 (2017) Scanning |
| بيانات النشر: | Hindawi-Wiley, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Article Subject, Computer science, Image registration, 02 engineering and technology, 01 natural sciences, Atomic units, Scan line, law.invention, law, Lattice (order), 0103 physical sciences, Computer vision, lcsh:Microscopy, Instrumentation, 010302 applied physics, Horizontal scan rate, lcsh:QH201-278.5, business.industry, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Computer Science::Computer Vision and Pattern Recognition, Counter-scanning, Artificial intelligence, Scanning tunneling microscope, 0210 nano-technology, business, Algorithm, Order of magnitude, Research Article |
| الوصف: | We present an image postprocessing framework for Scanning Tunneling Microscope (STM) to reduce the strong spurious oscillations and scan line noise at fast scan rates and preserve the features, allowing an order of magnitude increase in the scan rate without upgrading the hardware. The proposed method consists of two steps for large scale images and four steps for atomic scale images. For large scale images, we first apply for each line an image registration method to align the forward and backward scans of the same line. In the second step we apply a “rubber band” model which is solved by a novel Constrained Adaptive and Iterative Filtering Algorithm (CIAFA). The numerical results on measurement from copper(111) surface indicate the processed images are comparable in accuracy to data obtained with a slow scan rate, but are free of the scan drift error commonly seen in slow scan data. For atomic scale images, an additional first step to remove line-by-line strong background fluctuations and a fourth step of replacing the postprocessed image by its ranking map as the final atomic resolution image are required. The resulting image restores the lattice image that is nearly undetectable in the original fast scan data. |
| وصف الملف: | text/xhtml |
| اللغة: | English |
| تدمد: | 1932-8745 0161-0457 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b975642aa2fb4de302ec09e6b2f6bfd8 https://doaj.org/article/2adcfcf4f37e489e8cd119a08de8d778 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b975642aa2fb4de302ec09e6b2f6bfd8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19328745 01610457 |
|---|