Kirpal, Dominik and Qiu, Jinglan and Puerckhauer, Korbinian and Weymouth, Alfred J. and Metz, Michael and Giessibl, Franz J. (2021) Biaxial atomically resolved force microscopy based on a qPlus sensor operated simultaneously in the first flexural and length extensional modes. REVIEW OF SCIENTIFIC INSTRUMENTS, 92 (4): 043703. ISSN 0034-6748, 1089-7623
Full text not available from this repository. (Request a copy)Abstract
Frequency-modulation atomic force microscopy (AFM) with a qPlus sensor allows one to atomically resolve surfaces in a variety of environments ranging from low-temperature in ultra-high vacuum to ambient and liquid conditions. Typically, the tip is driven to oscillate vertically, giving a measure of the vertical force component. However, for many systems, the lateral force component provides valuable information about the sample. Measuring lateral and vertical force components simultaneously by oscillating vertically and laterally has so far only been demonstrated with relatively soft silicon cantilevers and optical detection. Here, we show that the qPlus sensor can be used in a biaxial mode with electrical detection by making use of the first flexural mode and the length extensional mode. We describe the necessary electrode configuration as well as the electrical detection circuit and compare the length extensional mode to the needle sensor. Finally, we show atomic resolution in ambient conditions of a mica surface and in ultra-high vacuum of a silicon surface. In addition to this, we show how any qPlus AFM setup can be modified to work as a biaxial sensor, allowing two independent force components to be recorded.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Science > 500 Natural sciences & mathematics 500 Science > 530 Physics 600 Technology > 600 Technology (Applied sciences) |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Aug 2022 04:42 |
| Last Modified: | 18 Aug 2022 04:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46671 |
Actions (login required)
 |
View Item |
