<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J.S. Raminhos, A. Velhinho, J.P. Borges</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development of Polymeric Anepectic Meshes: Auxetic Metamaterials with Negative Thermal Expansion</style></title><secondary-title><style face="normal" font="default" size="100%">Smart Materials &amp; Structures</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">045010</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This paper reports the application of additive manufacturing technology to fabricate bidimensional&lt;br /&gt;
lightweight composite meshes capable of demonstrating auxetic properties&lt;br /&gt;
(negative Poisson’s ratio (NPR)) in combination with negative thermal expansion (NTE)&lt;br /&gt;
behaviour, using as constituent materials polymers that do not exhibit NTE behaviour. To&lt;br /&gt;
describe the combination of NPR and NTE characteristics, the designation of ‘anepectic’ is being&lt;br /&gt;
proposed. Each mesh, obtained from varying either the material combination or the design&lt;br /&gt;
parameters, was tested on a heated silicone bath to study the effects of the different combinations&lt;br /&gt;
on the coefficient of thermal expansion (CTE). It was found that all meshes studied demonstrated&lt;br /&gt;
a successful combination of NPR and NTE behaviours, and it was revealed that there is a&lt;br /&gt;
possibility to tailor the meshes to activate the NTE behaviour within a chosen range of&lt;br /&gt;
temperatures. For an extreme case, a Poisson’s ratio of −0.056, along with a CTE of&lt;br /&gt;
−1568×10^−6 K−1 has been achieved.&lt;/p&gt;
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