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Such sensors can be used to monitor physical signals over flexible, curved, or soft devices. Hence, it is herein proposed, a formulation to produce piezoresistive multiwalled carbon nanotube\/polydimethylsiloxane (MWCNT\/PDMS) composites with tunable electric properties for pressure sensing purposes. The composite is obtained through few manufacturing steps, avoiding the use of hazardous solvents. Different weight percentages of MWCNT dispersed in PDMS are evaluated and the results evidence that using 3.0\u2009wt% of infill is sufficient to obtain highly sensitive sensors. To enhance the dispersion of the MWCNT and add microstructure to the composite, a system composed of a surfactant and foaming agent is used. Finally, pressure sensing units and arrays are printed and tested. The sensors present fast response, low hysteresis, repeatability, and a sensing range of 0\u2013160\u2009kPa. The composite is more sensitive to lower pressure and a maximum sensitivity of 8.0%\u2009kPa\n                    <jats:sup>\u22121<\/jats:sup>\n                    is achieved for porous composites at pressure &lt;10\u2009kPa. Thanks to these characteristics, the sensors are successfully used in the development of a pressure sensing array and heartbeat sensor for proof of concept.\n                  <\/jats:p>","DOI":"10.1002\/adem.202400132","type":"journal-article","created":{"date-parts":[[2024,2,26]],"date-time":"2024-02-26T22:10:08Z","timestamp":1708985408000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Characterization of Microstructured Multiwalled Carbon Nanotube\/Polydimethylsiloxane Composites for Piezoresistive Sensing Applications"],"prefix":"10.1002","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2789-8477","authenticated-orcid":false,"given":"Claudia S.","family":"Buga","sequence":"first","affiliation":[{"name":"IPC\/LASI \u2013 Institute for Polymers and Composites\/Associated Laboratory of Intelligence Systems University of Minho  Campus de Azur\u00e9m 4800\u2010058 Guimar\u00e3es Portugal"},{"name":"DTx Colab \u2013 Digital Transformation University of Minho  Campus de Azur\u00e9m 4800\u2010058 Guimar\u00e3es Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5757-0096","authenticated-orcid":false,"given":"Carlos J.","family":"Tavares","sequence":"additional","affiliation":[{"name":"CFUM \u2013 Centro de F\u00edsica da Universidade do Minho  Campus de Azur\u00e9m 4800\u2010058 Guimar\u00e3es Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1210-2915","authenticated-orcid":false,"given":"J\u00falio C.","family":"Viana","sequence":"additional","affiliation":[{"name":"IPC\/LASI \u2013 Institute for Polymers and Composites\/Associated Laboratory of Intelligence Systems University of Minho  Campus de Azur\u00e9m 4800\u2010058 Guimar\u00e3es Portugal"},{"name":"DTx Colab \u2013 Digital Transformation University of Minho  Campus de Azur\u00e9m 4800\u2010058 Guimar\u00e3es 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