BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Textile Electronics: from Sensors to Radio Frequency Energy Harves ting DTSTART:20260206T093000Z DTEND:20260206T120000Z DTSTAMP:20260921T180503Z UID:68970085-72cb-4582-8416-2766bf581d00 SEQUENCE:2 CREATED:20260114T150320Z DESCRIPTION:The arrival of 5G and the Internet of Things (IoT) has created an increasing demand for flexible\, lightweight\, and seamlessly integrat ed electronic systems. Textile electronics\, which merge conductive materi als with fabric substrates\, present a promising solution for wearable and embedded smart devices. However\, challenges such as material conductivit y\, fabrication scalability\, environmental sustainability\, and device du rability must be addressed for their widespread adoption. This thesis expl ores the development of textile-based electronic components\, focusing on flexible antennas\, multifunctional sensors\, and radio frequency (RF) ene rgy harvesting systems. Novel conductive materials\, including silver nano particle-based inks and graphene composites\, were investigated for their electrical performance and compatibility with textile substrates. Scalable and eco-friendly fabrication processes\, such as doctor blade and screen- printing\, were optimized to integrate electronic functionalities into pol yester and natural fiber textiles. The designed textile antennas were test ed for their resonance performance under bending\, washing\, and body inte raction conditions\, demonstrating stable operation in the 3 – 3.5 GHz 5 G band. Additionally\, textile-based sensors for temperature and humidity monitoring were developed\, achieving enhanced sensitivity through graphen e and PEDOT:PSS composites. Lastly\, sustainable RF energy harvesting solu tions using textile-printed rectennas were explored to enable self-powered wearable devices. The findings of this research contribute to advancing t extile electronics by providing scalable\, high-performance\, and sustaina ble solutions for next-generation wireless and sensing applications. These developments pave the way for integrating smart textiles into IoT ecosyst ems\, enabling applications in healthcare\, smart infrastructure\, and wea rable technology. LAST-MODIFIED:20260114T150333Z LOCATION:Online URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/textile-electronics-from-s ensors-to-radio-frequency-energy-harvesting/ X-ALT-DESC;FMTTYPE=text/html:

The arrival of 5G a nd the Internet of Things (IoT) has created an increasing demand for flexi ble\, lightweight\, and seamlessly integrated electronic systems. Textile electronics\, which merge conductive materials with fabric substrates\, pr esent a promising solution for wearable and embedded smart devices. Howeve r\, challenges such as material conductivity\, fabrication scalability\, e nvironmental sustainability\, and device durability must be addressed for their widespread adoption.

This thesis explores the development of textile-based electronic components\, focusing on flexible antennas\, m ultifunctional sensors\, and radio frequency (RF) energy harvesting system s. Novel conductive materials\, including silver nanoparticle-based inks a nd graphene composites\, were investigated for their electrical performanc e and compatibility with textile substrates. Scalable and eco-friendly fab rication processes\, such as doctor blade and screen-printing\, were optim ized to integrate electronic functionalities into polyester and natural fi ber textiles.

The designed textile antennas were tested for thei r resonance performance under bending\, washing\, and body interaction con ditions\, demonstrating stable operation in the 3 – 3.5 GHz 5G band. Add itionally\, textile-based sensors for temperature and humidity monitoring were developed\, achieving enhanced sensitivity through graphene and PEDOT :PSS composites.

Lastly\, sustainable RF energy harvesting solut ions using textile-printed rectennas were explored to enable self-powered wearable devices. The findings of this research contribute to advancing te xtile electronics by providing scalable\, high-performance\, and sustainab le solutions for next-generation wireless and sensing applications. These developments pave the way for integrating smart textiles into IoT ecosyste ms\, enabling applications in healthcare\, smart infrastructure\, and wear able technology.

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