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Although the application of liquid metals (LM) and their composites has improved the stretchability of various tactile sensors, there remains a considerable gap between the performance of current flexible tactile sensors and human skin, attributed to their limited sensitivity and narrow working range. In this work, a liquid metal droplet (LMD)\u2010based flexible tactile sensor that achieves both high\u2010pressure sensitivity of 3\u2009\u00d7\u200910<jats:sup>\u22122<\/jats:sup>\u2009kPa<jats:sup>\u22121<\/jats:sup> and a wide working range from 50\u2009Pa to 1.2\u2009MPa is proposed. The novel sensor consists of an LMD array in which each pair of droplets is connected by an electrolyte solution within the polydimethylsiloxane microchannel grid. It is demonstrated that the 2\u2010LMD sensor is capable of detecting human motion and physiological signals, while the electrical impedance tomography\u2010based 3.5\u2009\u00d7\u20093.5\u2009cm sensor can detect the shape and position of single\u2010point, multipoint, and other complex contact using only eight evenly distributed electrodes along the sensor's edge. These findings highlight the promising potential of the sensors in future robotic and wearable electronic applications.<\/jats:p>","DOI":"10.1002\/aisy.202401019","type":"journal-article","created":{"date-parts":[[2025,3,29]],"date-time":"2025-03-29T09:55:20Z","timestamp":1743242120000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Liquid Metal Reversible Contacts for Flexible Tactile Sensor with High Sensitivity and Wide Detection Range"],"prefix":"10.1002","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5365-9277","authenticated-orcid":false,"given":"Shuai","family":"Dong","sequence":"first","affiliation":[{"name":"Department of Precision Machinery and Precision Instrumentation Institute of Humanoid Robots University of Science and Technology of China  Hefei Anhui 230026 China"},{"name":"School of Mechanical Materials, Mechatronic and Biomedical Engineering University of Wollongong  Wollongong 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