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The approach relies on piecewise linear axisymmetric approximation of the tip shape based on the analysis of force versus indentation depth curves acquired on a soft reference sample. PIFCA was validated using force curves collected on polydimethylsiloxane samples and was able to reconstruct nearly axisymmetric tip shapes with high goodness\u2010of\u2010fit (\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u2265 0.98). PIFCA does not require any additional measurements such as electron microscopy or blind tip reconstruction (BTR). Thus, it simplifies the workflow and minimizes the risks of altering the tip shape and mechanical properties associated with those methods. Unlike other methods, PIFCA is robust for both deep and shallow indentations, which makes it particularly appealing for applications involving soft materials and deep indentations.\n                  <\/jats:p>","DOI":"10.1002\/smtd.71081","type":"journal-article","created":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T06:29:06Z","timestamp":1791354546000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Robust Reconstruction of Atomic Force Microscopy Tip Shape From Force\u2010Indentation Curves"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-7500-431X","authenticated-orcid":false,"given":"Logan J.","family":"Kirsch","sequence":"first","affiliation":[{"name":"Walker Department of Mechanical Engineering The University of Texas at Austin  Austin Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason P.","family":"Killgore","sequence":"additional","affiliation":[{"name":"Applied Chemicals and Materials Division National Institute of Standards and Technology  Boulder Colorado USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2928-4206","authenticated-orcid":false,"given":"Gregory J.","family":"Rodin","sequence":"additional","affiliation":[{"name":"Department of Aerospace Engineering and Engineering Mechanics The University of Texas at Austin  Austin Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7701-6989","authenticated-orcid":false,"given":"Loukas F.","family":"Kallivokas","sequence":"additional","affiliation":[{"name":"Fariborz Maseeh Department of Civil Architectural and Environmental Engineering The University of Texas at Austin  Austin Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3360-9122","authenticated-orcid":false,"given":"Filippo","family":"Mangolini","sequence":"additional","affiliation":[{"name":"Walker Department of Mechanical Engineering The University of Texas at Austin  Austin Texas USA"},{"name":"Texas Materials Institute The University of Texas at Austin  Austin Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,6]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41592\u2010018\u20100015\u20101"},{"key":"e_1_2_9_3_1","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1016\/j.spjpm.2016.08.009","article-title":"A Technique for Determining Young's Modulus of Biological Objects Using Atomic\u2010Force Microscopy in the Wide Temperature Range Below Rt","volume":"2","author":"Krymskaya K. 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