A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy
Recently, there has been growing interest in using lightwave-driven scanning probe microscopy (LD-SPM) to break through the Abbe diffraction limit of focusing, yielding insight into various energy couplings and conversion processes and revealing the internal information of matter. We describe a comp...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/2/378 |
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| author | Kui Xiang Caihong Xie Qiyuan Feng Ze Wang Guangbin Dai Jihao Wang Jing Zhang Wenjie Meng Yubin Hou Qingyou Lu Yalin Lu |
| author_facet | Kui Xiang Caihong Xie Qiyuan Feng Ze Wang Guangbin Dai Jihao Wang Jing Zhang Wenjie Meng Yubin Hou Qingyou Lu Yalin Lu |
| author_sort | Kui Xiang |
| collection | DOAJ |
| description | Recently, there has been growing interest in using lightwave-driven scanning probe microscopy (LD-SPM) to break through the Abbe diffraction limit of focusing, yielding insight into various energy couplings and conversion processes and revealing the internal information of matter. We describe a compact and efficient optical cryostat designed for LD-SPM testing under magnetic fields. The exceptional multilayer radiation shielding insert (MRSI) forms an excellent temperature gradient when filled with heat conducting gas, which removes the requirement to install an optical window in the liquid helium cooling shell. This not only critically avoids the vibration and thermal drift caused by solid heat conduction but also minimizes light transmission loss. The application of gate valves and bellows allows a simpler and more effective replacement of the sample and working cell in the test cavity. ANSYS software is used for steady-state thermal analysis of the MRSI to obtain the temperature distribution and heat transfer rate, and the necessity of the flexible copper shielding strips is illustrated by the simulations. The topography and magnetic domain images of 45 nm-thick La<sub>0.67</sub>Ca<sub>0.33</sub>MnO<sub>3</sub> thin films on NdGaO<sub>3</sub>(001) substrates under a magnetic field were obtained by a self-made lightwave-driven magnetic force microscope in this cryostat. The resolution and noise spectra during imaging reveal temperature stability and low vibration throughout the cryostat. The experience acquired during the development of this cryostat will help to establish cryostats of similar types for a variety of optic applications requiring the use of cryogenic temperatures. |
| first_indexed | 2024-03-11T08:23:51Z |
| format | Article |
| id | doaj.art-1fc37cca9f1748dd819cabdd4cc9dadb |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-11T08:23:51Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-1fc37cca9f1748dd819cabdd4cc9dadb2023-11-16T22:11:24ZengMDPI AGMicromachines2072-666X2023-02-0114237810.3390/mi14020378A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe MicroscopyKui Xiang0Caihong Xie1Qiyuan Feng2Ze Wang3Guangbin Dai4Jihao Wang5Jing Zhang6Wenjie Meng7Yubin Hou8Qingyou Lu9Yalin Lu10High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaUniversity of Science and Technology of China, Hefei 230026, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaHigh Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaUniversity of Science and Technology of China, Hefei 230026, ChinaRecently, there has been growing interest in using lightwave-driven scanning probe microscopy (LD-SPM) to break through the Abbe diffraction limit of focusing, yielding insight into various energy couplings and conversion processes and revealing the internal information of matter. We describe a compact and efficient optical cryostat designed for LD-SPM testing under magnetic fields. The exceptional multilayer radiation shielding insert (MRSI) forms an excellent temperature gradient when filled with heat conducting gas, which removes the requirement to install an optical window in the liquid helium cooling shell. This not only critically avoids the vibration and thermal drift caused by solid heat conduction but also minimizes light transmission loss. The application of gate valves and bellows allows a simpler and more effective replacement of the sample and working cell in the test cavity. ANSYS software is used for steady-state thermal analysis of the MRSI to obtain the temperature distribution and heat transfer rate, and the necessity of the flexible copper shielding strips is illustrated by the simulations. The topography and magnetic domain images of 45 nm-thick La<sub>0.67</sub>Ca<sub>0.33</sub>MnO<sub>3</sub> thin films on NdGaO<sub>3</sub>(001) substrates under a magnetic field were obtained by a self-made lightwave-driven magnetic force microscope in this cryostat. The resolution and noise spectra during imaging reveal temperature stability and low vibration throughout the cryostat. The experience acquired during the development of this cryostat will help to establish cryostats of similar types for a variety of optic applications requiring the use of cryogenic temperatures.https://www.mdpi.com/2072-666X/14/2/378cryostatscanning probe microscopylong-wavelength lightANSYSmagnetic field |
| spellingShingle | Kui Xiang Caihong Xie Qiyuan Feng Ze Wang Guangbin Dai Jihao Wang Jing Zhang Wenjie Meng Yubin Hou Qingyou Lu Yalin Lu A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy Micromachines cryostat scanning probe microscopy long-wavelength light ANSYS magnetic field |
| title | A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy |
| title_full | A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy |
| title_fullStr | A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy |
| title_full_unstemmed | A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy |
| title_short | A Cryostat Applicable to Long-Wavelength Light-Driven Scanning Probe Microscopy |
| title_sort | cryostat applicable to long wavelength light driven scanning probe microscopy |
| topic | cryostat scanning probe microscopy long-wavelength light ANSYS magnetic field |
| url | https://www.mdpi.com/2072-666X/14/2/378 |
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