87 documents found, page 1 of 9
Textile-based electrochemical sensor to detect ethanol using platinum nanoparti...
Costa, Nuna G.; Vanoni, Caio R.; Barros, Aline; Silva, C.; Gonzalez, Arturo; Antunes, Joana C.; Rocha, A. M.The development of textile-based electrochemical sensors for monitoring biomarkers in biological fluids, particularly alcohol, is a key area of research for real-time health monitoring. Alcohol, a widely consumed psychoactive substance, is a leading cause of fatal road accidents. This study explores the characterization and functionalization of a novel textile-based screen-printed electrode (SPE) for ethanol de...
Integrating sEMG and IMU sensors in an e-Textile smart vest for forward posture...
Martins, João Gilberto Ramalho Caniçó; Cerqueira, Sara Maria Brito Araújo; Catarino, André P.; Ferreira da Silva, Alexandre; Rocha, A. M.; Vale, JorgeCurrently, the market for wearable devices is expanding, with a growing trend towards the use of these devices for continuous-monitoring applications. Among these, real-time posture monitoring and assessment stands out as a crucial application given the rising prevalence of conditions like forward head posture (FHP). This paper proposes a wearable device that combines the acquisition of electromyographic signal...
DOP56 Fibrosis-related transcriptome unveils a distinctive matrix remodelling p...
Sousa, Helena Tavares; Ferreira. M.; Gullo, I.; Rocha, A. M.; Oliveira, C.; Carneiro, F.; Magro, F.Fibrosis underlies most of CD complications requiring surgery, such as intestinal strictures and penetrating events. We previously demonstrated there were no histopathological differences on transmural fibrosis and fibromuscular changesbetween penetrating and stricturing ileal CD. This study aimed to investigate and compare the fibrosis-related transcriptomic profiles of penetrating and stricturing ileal CD.
Thermoelectric properties of cotton fabrics dip-coated in pyrolytically strippe...
Paleo, Antonio J.; Krause, Beate; Cerqueira, Maria F.; González-Domínguez, Jose M.; Muñoz, Enrique; Pötschke, Petra; Rocha, A. M.The transport properties of commercial carbon nanofibers (CNFs) produced by chemical vapor deposition (CVD) depend on the various conditions used during their growth and post-growth synthesis, which also affect their derivate CNF-based textile fabrics. Here, the production and thermoelectric (TE) properties of cotton woven fabrics (CWFs) functionalized with aqueous inks made from different amounts of pyrolytica...
Towards a smart-vest for forward posture monitoring: improving usability with e...
Martins, João Gilberto Ramalho Caniçó; Cerqueira, Sara Maria Brito Araújo; Ferreira da Silva, Alexandre; Catarino, André P.; Rocha, A. M.The emergence of new communication technologies, such as computers and smartphones, has decisively contributed to the adoption of ergonomically incorrect postural behaviors. Forward Head Posture (FHP) stands out, which is sometimes associated with the onset of more serious problems, such as neck pain. This paper presents a brief overview of the most recurrent monitoring methods for FHP assessment, as well as th...
Electronic features of cotton fabric e-textiles prepared with aqueous carbon na...
Paleo, Antonio J.; Krause, Beate; Cerqueira, M. F.; Muñoz, Enrique; Pötschke, Petra; Rocha, A. M.Cotton woven fabrics functionalized with aqueous inks made with carbon nanofibers (CNFs) and anionic surfactant are prepared via dip-coating followed by heat treatment, and their electronic properties are discussed. The e-textiles prepared with the inks made with the highest amount of CNFs (6.4 mg mL−1 ) show electrical conductivities (σ) of ∼35 S m−1 and a negative Seebeck (S) of −6 μV K−1 at 30 °C, which mean...
Nonlinear thermopower behaviour of n-type carbon nanofibres and their melt mixe...
Vieito, António Jose Paleo; Krause, Beate; Cerqueira, M. F.; Muñoz, Enrique; Pötschke, Petra; Rocha, A. M.The temperature dependent electrical conductivity <i>σ</i> (<i>T</i>) and thermopower (Seebeck coefficient) <i>S</i> (<i>T</i>) from 303.15 K (30 °C) to 373.15 K (100 °C) of an as-received commercial n-type vapour grown carbon nanofibre (CNF) powder and its melt-mixed polypropylene (PP) composite with 5 wt.% of CNFs have been analysed. At 30 °C, the <i>σ</i> and <i>S</i> of the CNF powder are ~136 S m<sup>−1</s...
3D printing of flexible conductive polymers on textiles for sensing and electri...
Monteiro, Eva; Carvalho, Helder; Rocha, A. M.; Tama, Derya; Puga, HélderAdditive manufacturing (AM) is a 3D printing technology that works by deposition of a material, layer by layer, creating 3D objects. The growth of these technologies has been exponential and the application of AM in the textile industry has also been a subject of increased interest in the past few years. The applications are not only for decorative purposes, but also for biomedical and other uses in e-textiles....
Thermoelectric properties of n-type poly (ether ether ketone)/carbon nanofiber ...
Paleo, Antonio J.; Krause, Beate; Soares, Delfim; Melle-Franco, Manuel; Muñoz, Enrique; Pötschke, Petra; Rocha, A. M.The thermoelectric properties, at temperatures from 30 °C to 100 °C, of melt-processed poly(ether ether ketone) (PEEK) composites prepared with 10 wt.% of carbon nanofibers (CNFs) are discussed in this work. At 30 °C, the PEEK/CNF composites show an electrical conductivity (σ) of ~27 S m<sup>−1</sup> and a Seebeck coefficient (S) of −3.4 μV K<sup>−1</sup>, which means that their majority charge carriers are ele...
A review on flexible electrochemical biosensors to monitor alcohol in sweat
Costa, Nuna G.; Antunes, Joana C.; Paleo, Antonio J.; Rocha, A. M.The continued focus on improving the quality of human life has encouraged the development of increasingly efficient, durable, and cost-effective products in healthcare. Over the last decade, there has been substantial development in the field of technical and interactive textiles that combine expertise in electronics, biology, chemistry, and physics. Most recently, the creation of textile biosensors capable of ...