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Inspired by this concept, active whisker sensors measure various physical and geometric properties through contact with objects. However, previous research has focused on measuring the object geometry, often overlooking the potential for broader applications of the sensors. Herein, an active whisker sensor that enables simple measurement of the surface properties such as surface hardness and adhesiveness is reported. Composed of motor\u2010, wire\u2010, and crack\u2010based mechanosensor, the active whisker sensor implements a tapping process inspired by the movement of a rat's whiskers to quickly evaluate the object surface. One area of potential application is the food industry. The active whisker sensors offer a new approach to measuring surface properties of viscoelastic and inelastic food that are difficult to measure with traditional bulky systems. Herein, it is validated that the tapping process can be used to measure the surface properties of a various foods. With the aid of machine learning algorithms, sensor can also recognize differences in the surface properties of bananas at different ripeness stages and classify them with 99% accuracy. In this report, the possibilities for applications of active whisker sensors, including food industry, robotics, and medical devices, are opened up.<\/jats:p>","DOI":"10.1002\/aisy.202300660","type":"journal-article","created":{"date-parts":[[2024,2,15]],"date-time":"2024-02-15T21:54:31Z","timestamp":1708034071000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Active Whisker\u2010Inspired Food Material Surface Property Measurement Using Deep\u2010Learned Mechanosensor"],"prefix":"10.1002","volume":"7","author":[{"given":"Jieun","family":"Park","sequence":"first","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Minho","family":"Kim","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Jinhyung","family":"Park","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Myungrae","family":"Hong","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Sunghoon","family":"Im","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Damin","family":"Choi","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Eunyoung","family":"Kim","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Dohyeon","family":"Gong","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"given":"Seokhaeng","family":"Huh","sequence":"additional","affiliation":[{"name":"Unmanned\/Robotic Systems LIG Nex1  333, Pangyo\u2010ro, Bundang\u2010gu Seongnam\u2010si 13488 Gyeonggi\u2010do Republic of Korea"}]},{"given":"Seung\u2010Un","family":"Jo","sequence":"additional","affiliation":[{"name":"Unmanned\/Robotic Systems LIG Nex1  333, Pangyo\u2010ro, Bundang\u2010gu Seongnam\u2010si 13488 Gyeonggi\u2010do Republic of Korea"}]},{"given":"ChangHwan","family":"Kim","sequence":"additional","affiliation":[{"name":"Defense Industry Technology Center Agency for Defense Development  61, Yeouidaebang\u2010ro Dongjak\u2010gu 07062 Seoul Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7739-0882","authenticated-orcid":false,"given":"Je\u2010Sung","family":"Koh","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2870-4088","authenticated-orcid":false,"given":"Seungyong","family":"Han","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7490-9079","authenticated-orcid":false,"given":"Daeshik","family":"Kang","sequence":"additional","affiliation":[{"name":"Multiscale Bio\u2010inspired Technology Lab Department of Mechanical Engineering Ajou University  Suwon 16499 Republic of Korea"}]}],"member":"311","published-online":{"date-parts":[[2024,2,15]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/nn.2328"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1098\/rstb.2011.0167"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-018-06200-6"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/nn.3378"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/nrn2411"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnbeh.2012.00074"},{"key":"e_1_2_8_8_1","unstructured":"N. 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