{"id":466234,"date":"2023-12-13T08:07:12","date_gmt":"2023-12-13T07:07:12","guid":{"rendered":"https:\/\/innovationorigins.com\/?p=466234"},"modified":"2023-12-13T08:07:12","modified_gmt":"2023-12-13T07:07:12","slug":"major-breakthrough-smart-3d-printing-tech-from-tu-delft-mimics-bone-tendon-connections","status":"publish","type":"post","link":"https:\/\/ioplus.nl\/archive\/en\/major-breakthrough-smart-3d-printing-tech-from-tu-delft-mimics-bone-tendon-connections\/","title":{"rendered":"Major breakthrough: Smart 3D printing tech from TU Delft mimics bone-tendon connections"},"content":{"rendered":"\n<p>Most people can relate to having a laptop charger break right where the flexible cable meets the solid adapter. This is just one example of how difficult it is to effectively interface hard and soft materials. Using a unique 3D printing process, <a href=\"https:\/\/www.tudelft.nl\/en\/2023\/tu-delft\/optimisation-of-hard-soft-material-interfaces-a-3d-printed-imitation-of-bone-tendon-connections\">TU Delft researchers produced<\/a> hybrid multi-material interfaces that reached a remarkable closeness to nature\u2019s design of bone-tendon connections. Their research findings were recently published in\u00a0<a rel=\"noreferrer noopener\" href=\"https:\/\/www.nature.com\/articles\/s41467-023-43422-9\" target=\"_blank\">Nature Communications<\/a>.<\/p>\n\n\n\n<div class=\"io-block io-block__summary\"><ul><li>TU Delft researchers use human bone-tendon joints as inspiration to effectively connect hard and soft materials;<\/li><li>To do so, they use a 3D printing process and different configurations;<\/li><li>They succeeded in increasing the toughness of joints by 50%, with universally applicable design guidelines to improve mechanical performance.<\/li><li>The developed technique enables the production of entire products in one go.<\/li><\/ul><\/div>\n\n\n\n<p>Despite the great difference in hardness between bones and tendons, their intersections in the human body never fail. It is this bone-tendon connection that inspired a team of researchers from the faculty of Mechanical, Maritime and Material Engineering (3mE) to explore ways to optimise the hard and soft interfaces of man-made materials.<\/p>\n\n\n\n<figure class=\"wp-block-image alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/archive.ioplus.nl\/wp-content\/uploads\/2023\/12\/Schermafbeelding-2023-12-13-074913.png\" alt=\"\" class=\"wp-image-466232\" width=\"237\" height=\"240\"\/><figcaption class=\"wp-element-caption\">Amir Zadpoor. Image: TU Delft<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Design inspiration<\/h2>\n\n\n\n<p>Whenever there is a mismatch between two connected materials, it results in a stress concentration, explains Amir Zadpoor, Professor of Biomaterials and Tissue Biomechanics. That means the mechanical stress goes to the connection point and usually results in failure of the softer material. One of the things seen in nature is a gradual change in properties at an interface. \u201cA hard material doesn&#8217;t suddenly become a soft material,\u201d says Zadpoor. \u201cIt changes gradually, and that smoothes out the stress concentration.\u201d With that in mind, the researchers used different geometries and a multi-material 3D printing technique to increase the contact area between hard and soft interfaces, thereby emulating nature\u2019s design.<\/p>\n\n\n\n<p>Another design consideration is that the force that a soft material can tolerate before failure is lower than that of a hard material. \u201cIt&#8217;s only relevant to make the interface as strong as the soft material, because if it&#8217;s stronger, the soft material will fail anyway and that&#8217;s your theoretical limit,\u201d says Mauricio Cruz Saldivar, the first author of the research. The researchers were able to enhance toughness values of interfaces by fifty percent as compared to a control group. Approaching the limit of what is theoretically possible is one of the main contributions of this research, according to the team. But the study also resulted in a set of design guidelines for improving the mechanical performance of bioinspired soft-hard interfaces, principles which are universally applicable.<\/p>\n\n\n<div class=\"vlp-link-container vlp-layout-basic wp-block-visual-link-preview-link\"><a href=\"https:\/\/ioplus.nl\/archive\/en\/shape-matters-how-3d-printing-can-optimize-drug-release-and-effectiveness\/\" class=\"vlp-link\" title=\"Shape matters: how 3D printing can optimize drug release and effectiveness\"><\/a><div class=\"vlp-layout-zone-side\"><div class=\"vlp-block-2 vlp-link-image\"><\/div><\/div><div class=\"vlp-layout-zone-main\"><div class=\"vlp-block-0 vlp-link-title\">Shape matters: how 3D printing can optimize drug release and effectiveness<\/div><div class=\"vlp-block-1 vlp-link-summary\">3D-printed pills are on the way, and they will resemble design objects, serving to release active medical ingredients in the body in a controlled manner. <\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">A whole product in one go<\/h2>\n\n\n\n<p>The technique developed by the team also enables the making of a whole product at once. This is important because products with multiple materials are generally attached by adhesives. Parts might be assembled or mechanically connected like in automotive or aerospace applications. \u201cBut what we are trying to do is remove the extra steps that are involved, and have everything in one go,\u201d says assistant professor Zjenja Doubrovski. \u201cThat makes it possible for us to combine even more exotic materials together, for example, materials that have more damping resistance versus materials that are stronger.\u201d And this combination enables a higher range of applicability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Future applications<\/h2>\n\n\n\n<p>Many things can be done with this technology. Potential applications include medical devices, soft robotics, and flexible devices. But the team also aims to explore making interfaces with living cells to enable procedures like connecting implants to the surrounding soft tissue. \u201cEventually, we would like to regenerate bone and the connection between the bone and the muscle,\u201d says assistant professor Mohammad J. Mirzaali. \u201cThat would mean integrating living cells into this interface, which would add multiple layers of complexity to the construct.\u201d Ultimately, the results of this work leave the door wide open to a range of future studies.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Most people can relate to having a laptop charger break right where the flexible cable meets the solid adapter. This is just one example of how difficult it is to effectively interface hard and soft materials. Using a unique 3D printing process, TU Delft researchers produced hybrid multi-material interfaces that reached a remarkable closeness to [&hellip;]<\/p>\n","protected":false},"author":1744,"featured_media":494934,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[76370,42],"tags":[82693,82695,82697],"location":[6763],"article_type":[36684],"serie":[],"archives":[],"internal_archives":[],"reboot-archive":[],"class_list":["post-466234","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","category-sustainability-nl","tag-3d-printing-15","tag-printing-tech","tag-tu-delft-54","location-netherlands","article_type-news"],"blocksy_meta":[],"acf":{"subtitle":"Researchers at TU Delft have applied a 3D printing technique to optimize connections between hard and soft materials, inspired by natural bone-tendon connections.","text_display_homepage":false},"author_meta":{"display_name":"Aafke Eppinga","author_link":"https:\/\/ioplus.nl\/archive\/author\/aafke-eppinga\/"},"featured_img":"https:\/\/ioplus.nl\/archive\/wp-content\/uploads\/2023\/12\/csm_pees-implantaat_a73b5f0256.png","coauthors":[],"tax_additional":{"categories":{"linked":["<a href=\"https:\/\/ioplus.nl\/archive\/en\/category\/science\/\" class=\"advgb-post-tax-term\">Science<\/a>","<a href=\"https:\/\/ioplus.nl\/archive\/en\/category\/sustainability-nl\/\" class=\"advgb-post-tax-term\">Sustainability<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">Science<\/span>","<span class=\"advgb-post-tax-term\">Sustainability<\/span>"]},"tags":{"linked":["<a href=\"https:\/\/ioplus.nl\/archive\/en\/category\/sustainability-nl\/\" class=\"advgb-post-tax-term\">3D printing<\/a>","<a href=\"https:\/\/ioplus.nl\/archive\/en\/category\/sustainability-nl\/\" class=\"advgb-post-tax-term\">printing tech<\/a>","<a href=\"https:\/\/ioplus.nl\/archive\/en\/category\/sustainability-nl\/\" class=\"advgb-post-tax-term\">TU Delft<\/a>"],"unlinked":["<span class=\"advgb-post-tax-term\">3D printing<\/span>","<span class=\"advgb-post-tax-term\">printing tech<\/span>","<span class=\"advgb-post-tax-term\">TU Delft<\/span>"]}},"comment_count":"0","relative_dates":{"created":"Posted 2 years ago","modified":"Updated 2 years ago"},"absolute_dates":{"created":"Posted on December 13, 2023","modified":"Updated on December 13, 2023"},"absolute_dates_time":{"created":"Posted on December 13, 2023 8:07 am","modified":"Updated on December 13, 2023 8:07 am"},"featured_img_caption":"","series_order":"","_links":{"self":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts\/466234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/users\/1744"}],"replies":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/comments?post=466234"}],"version-history":[{"count":0,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/posts\/466234\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media\/494934"}],"wp:attachment":[{"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/media?parent=466234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/categories?post=466234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/tags?post=466234"},{"taxonomy":"location","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/location?post=466234"},{"taxonomy":"article_type","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/article_type?post=466234"},{"taxonomy":"serie","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/serie?post=466234"},{"taxonomy":"archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/archives?post=466234"},{"taxonomy":"internal_archives","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/internal_archives?post=466234"},{"taxonomy":"reboot-archive","embeddable":true,"href":"https:\/\/ioplus.nl\/archive\/wp-json\/wp\/v2\/reboot-archive?post=466234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}