Dynamically Tunable Dry Adhesion via Subsurface Stiffness Modulation

Tatari Milad; Mohammadi Nasab Amir; Turner Kevin T.; Shan Wanliang

摘要

Abstract >Tunable dry adhesion has a range of applications, including transfer printing, climbing robots, and gripping in automated manufacturing processes. Here, a novel concept to achieve dynamically tunable dry adhesion via modulation of the stiffness of subsurface mechanical elements is introduced and demonstrated. A composite post structure, consisting of an elastomer shell and a core with a stiffness that can be tuned via application of electrical voltage, is fabricated. In the nonactivated state, the core is stiff and the effective adhesion strength between the composite post and contact surface is high. Activation of the core via application of electrical voltage reduces the stiffness of the core, resulting in a change in the stress distribution and driving force for delamination at the interface and, thus a reduction in the effective adhesion strength. The adhesion of composite posts with a range of dimensions is characterized and activation of the core is shown to reduce the adhesion by as much as a factor of 6. The experimentally observed reduction in adhesion is primarily due to the change in stiffness of the core. However, the activation of the core also results in heating of the interface and this plays a secondary role in the adhesion change. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >可调谐干粘连具有一系列应用，包括转印印刷，攀爬机器人和自动制造过程中的夹持。这里，引入了一种新颖的概念，以通过调制地下机械元件的刚度来实现动态可调谐的干粘附性。制造了由弹性体壳和具有可以通过施加电压调谐的刚度的弹性体壳和芯的复合柱结构。在非激活状态下，芯是坚硬的，复合柱和接触表面之间的有效粘合强度高。通过施加电压的施加芯的激活降低了芯的刚度，导致应力分布和界面分层的驱动力的变化，从而降低有效粘合强度。具有一定尺寸范围的复合柱的粘附性表征和激活芯的激活，以使粘附性尽可能多地减少粘附。实验观察到的粘合性降低主要是由于芯的刚度变化。然而，核心的激活还导致界面的加热，这在粘附变化中起二次作用。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-18063/'>《Advanced materials interfaces》</a> <b style="margin: 0 2px;">|</b><span>2018年第18期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tatari Milad&option=202" target="_blank" rel="nofollow">Tatari Milad;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mohammadi Nasab Amir&option=202" target="_blank" rel="nofollow">Mohammadi Nasab Amir;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Turner Kevin T.&option=202" target="_blank" rel="nofollow">Turner Kevin T.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Shan Wanliang&option=202" target="_blank" rel="nofollow">Shan Wanliang;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Shan Research GroupUniversity of Nevada1664 N. Virginia Street Reno NV 89557 USA;</p> <p>Shan Research GroupUniversity of Nevada1664 N. Virginia Street Reno NV 89557 USA;</p> <p>Department of Mechanical Engineering and Applied MechanicsUniversity of Pennsylvania220 South 33rd Street Philadelphia PA 19104 USA;</p> <p>Shan Research GroupUniversity of Nevada1664 N. Virginia Street Reno NV 89557 USA;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/6960.html" title="特种结构材料">特种结构材料;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=dynamically tunable dry adhesion&option=203" rel="nofollow">dynamically tunable dry adhesion;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=rigidity tunable materials&option=203" rel="nofollow">rigidity tunable materials;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=stiffness tuning&option=203" rel="nofollow">stiffness tuning;</a> </p> <div class="translation"> 机译：动态可调干粘附;刚性可调材料;刚度调谐; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704022435701.html">Dynamically Tunable Dry Adhesion via Subsurface Stiffness Modulation</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tatari Milad&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Tatari Milad,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mohammadi Nasab Amir&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Mohammadi Nasab Amir,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Turner Kevin T.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Turner Kevin T.,</a> <a href="/journal-foreign-18063/" target="_blank" rel="nofollow" class="tuijian_authcolor">Advanced materials interfaces .</a> <span>2018</span><span>,第18期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：通过地下刚度调制动态可调干粘附</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/070402205452.html">Concerted Modulation of Paxillin Dynamics at Focal Adhesions by Deleted in Liver Cancer-1 and Focal Adhesion Kinase During Early Cell Spreading</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kaushik Shelly&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Kaushik Shelly,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ravi Archna&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Ravi Archna,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Hameed Feroz M.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Hameed Feroz M.,</a> <a href="/journal-foreign-17727/" target="_blank" rel="nofollow" class="tuijian_authcolor">Cytoskeleton .</a> <span>2014</span><span>,第12期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：肝细胞癌早期扩散过程中肝癌1和局部黏着斑激酶缺失后局部黏着斑上Paxillin动力学的协同调节</span> </p> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023594488.html">Mechanosensing of substrate stiffness regulates focal adhesions dynamics in cell</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sabato Fusco&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Sabato Fusco,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Valeria Panzetta&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Valeria Panzetta,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Paolo A. 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