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Important progress has been made, and the basic mechanics of how \u2018hairy\u2019 adhesives work have been faithfully reproduced, advancing theory in surface science and portending diverse practical applications. However, after 15\u2005years, no synthetic mimic can yet perform as well as a gecko and simultaneously meet of all the criteria listed above. Moreover, processes for the production of inexpensive and scalable products are still not clearly in view. Here, we discuss our perspective on some of the gaps in understanding that still remain; these gaps in our knowledge should stimulate us to turn to deeper study of the way in which free-ranging geckos stick to the variety of surfaces found in their natural environments and to a more complete analysis of the materials composing the gecko toe pads.<\/jats:p>","DOI":"10.1242\/jeb.080085","type":"journal-article","created":{"date-parts":[[2016,3,31]],"date-time":"2016-03-31T01:11:07Z","timestamp":1459386667000},"page":"912-919","source":"Crossref","is-referenced-by-count":102,"title":["Sticking to the story: outstanding challenges in gecko-inspired adhesives"],"prefix":"10.1242","volume":"219","author":[{"given":"Peter H.","family":"Niewiarowski","sequence":"first","affiliation":[{"name":"Department of Biology and Integrated Bioscience Program, University of Akron, Akron, OH 44325, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alyssa Y.","family":"Stark","sequence":"additional","affiliation":[{"name":"Department of Biology, University of Louisville, 139 Life Science Building, Louisville, KY 40292, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ali","family":"Dhinojwala","sequence":"additional","affiliation":[{"name":"Department of Polymer Science, University of Akron, Akron, OH 44325, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","reference":[{"key":"2021042511335716300_JEB080085C1","doi-asserted-by":"publisher","first-page":"231","DOI":"10.1016\/j.tice.2013.01.002","article-title":"Immunolocalization of specific keratin associated beta-proteins (beta-keratins) in the adhesive setae of Gekko gecko","volume":"45","author":"Alibardi","year":"2013","journal-title":"Tissue Cell"},{"key":"2021042511335716300_JEB080085C2","doi-asserted-by":"publisher","first-page":"758","DOI":"10.1002\/jmor.10948","article-title":"Histochemical and ultrastructural analyses of adhesive setae of lizards indicate that they contain lipids in addition to keratins","volume":"272","author":"Alibardi","year":"2011","journal-title":"J. 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