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Here, we present a liquid-phase STM for use in a 10\u00a0T cryogen-free superconducting magnet. The STM head is mainly constructed with two piezoelectric tubes. A large piezoelectric tube is fixed at the bottom of a tantalum frame to perform large-area imaging. A small piezoelectric tube mounted at the free end of the large one performs high-precision imaging. The imaging area of the large piezoelectric tube is four times that of the small one. The high compactness and rigidity of the STM head make it functional in a cryogen-free superconducting magnet with huge vibrations. The performance of our homebuilt STM was demonstrated by the high-quality, atomic-resolution images of a graphite surface, as well as the low drift rates in the X\u2013Y plane and Z direction. Furthermore, we successfully obtained atomic-resolution images of graphite in solution conditions while sweeping the field from 0 to 10\u00a0T, illustrating the new STM\u2019s immunity to magnetic fields. The sub-molecular images of active antibodies and plasmid DNA in solution conditions show the device\u2019s capability of imaging biomolecules. Our STM is suitable for studying chemical molecules and active biomolecules in high magnetic fields.<\/jats:p>","DOI":"10.1063\/5.0121761","type":"journal-article","created":{"date-parts":[[2023,3,16]],"date-time":"2023-03-16T12:19:08Z","timestamp":1678969148000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["A cryogen-free superconducting magnet based scanning tunneling microscope for liquid phase measurement"],"prefix":"10.1063","volume":"94","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8718-3636","authenticated-orcid":false,"given":"Tao","family":"Geng","sequence":"first","affiliation":[{"name":"High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences 1 , Hefei, Anhui 230031, China"},{"name":"University of Science and Technology of China 2 , Hefei, Anhui 230026, 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