90 documents found, page 1 of 9
Reusable printed zirconium oxide on CNT-paper for high performance thin-film tr...
Vieira, Douglas Henrique; Carlos, Emanuel; Morais, Maria; Nascimento, Mayk Rodrigues; Morais, Rogério Miranda; Fortunato, Elvira; Alves, NeriMetal oxides represent a highly attractive class of materials for the development of sustainable electronic devices, which demands novel strategies that enable component reusability and reduced environmental impact, while maintaining high performance. In the present work, we report the fabrication of printed thin-film transistors (TFTs) based on eco-friendly and solution-processable metal oxides. The device is ...
Towards rapid and low-cost stroke detection Using SERS and Machine Learning
Freitas, Cristina; Eleutério, João; Soares, Gabriela; Enea, Maria; Nunes, Daniela; Fortunato, Elvira; Martins, Rodrigo; Águas, Hugo; Pereira, EuláliaStroke affects approximately 12 million individuals annually, necessitating swift diagnosis to avert fatal outcomes. Current hospital imaging protocols often delay treatment, underscoring the need for portable diagnostic solutions. We have investigated silver nanostars (AgNS) incubated with human plasma, deposited on a simple aluminum foil substrate, and utilizing Surface-Enhanced Raman Spectroscopy (SERS) comb...
Correction
Boane, Jenny; Panigrahi, Shrabani; Calmeiro, Tomás; Coimbra, Edgar; Santos, Ivan M.; Fortunato, Elvira; Martins, Rodrigo; Mendes, Manuel J.; Águas, HugoCorrection for ‘Unveiling the nanoscale photocurrent behavior in perovskite films on photonic-structured TiO2’ by Jenny Boane et al., New J. Chem., 2025, 49, 16226–16234, https://doi.org/10.1039/D5NJ02813B.
Towards a Less Invasive Treatment for Head and Neck Cancer
Amaral, Mariana Neves; Neto, Íris; Cabral, Mitza; Nunes, Daniela; Fortunato, Elvira; Martins, Rodrigo; Rodrigues, Carla; Almeida, António P. deBackground/Objectives: Head and neck cancer (HNC) is the sixth most common cancer worldwide, with a high mortality, particularly from head and neck squamous cell carcinoma (HNSCC). Although some therapeutic strategies are available, they might cause severe side effects. For example, surgery may result in disfigurement and functional loss, severely impacting the patient’s quality of life. Thus, minimally invasiv...
Photonic-amplified QD@Host perovskite solar cells
Alexandre, Miguel; Fortunato, Elvira; Martins, Rodrigo; Mendes, Manuel J.Quantum dots-in-host (QD@Host) hetero-semiconductors have a set of properties of conspicuous interest for photovoltaic (PV) applications, such as photogeneration beyond the standard semiconductor bandgap absorption limit — enabling substantially broader exploitation of the solar spectrum. Nevertheless, a key aspect has remained thus far unexploited: coupling these features with advanced light-management techniq...
Effect of the seed layer crystalline structure in the growth of zinc-tin oxide ...
Rovisco, Ana; Martins, Jorge; António, Margarida; Viegas, Jaime; Nunes, Daniela; Fortunato, Elvira; Martins, Rodrigo; Branquinho, Rita; Barquinha, PedroMetal oxide nanostructures have recently gained high attention due to advances in their synthesis, particularly hydrothermal techniques, which allow precise control over their morphology, composition, and crystallinity, as well as integration into devices. Zinc-tin oxide (ZTO) nanostructures, in particular, are notable for their sustainability and multifunctional applications, including catalysis, electronics, ...
Metal-Free Multilayer Graphene Electrodes Activated by PECVD for Electrochemica...
Bastos, Tarso Leandro; da Silva, Camila Cristina; Nunes, Daniela; Fortunato, Elvira; Martins, Rodrigo; Kathan, Devadharshini; Mustain, William EarlMultilayer graphene (MLG) was obtained by 3 h ultrasonication of thermally expanded graphite in n-propanol, producing 5–13-nm-thick flakes with 1–50 μm lateral size. The powder was dry-pressed into self-supported disk electrodes (MLGD) and surface-activated by brief MW-PECVD and RF-PECVD in Ar/CO2 and Ar/O2. PECVD raised Raman ID /IG from 0.07 to 0.26–0.28 (La ≈ 275 → 69–92 nm) and gave higher localized O for C...
Green exfoliation of 2D nanomaterials using cyrene as a solvent
Moreira, Pedro; Mendes, João; Calmeiro, Tomás; Nunes, Daniela; Carvalho, David; Kelly, Adam; Águas, Hugo; Fortunato, Elvira; Martins, RodrigoLiquid-phase exfoliation (LPE) is a versatile and scalable method for producing high-quality two-dimensional materials (2DMs). However, commonly used solvents such as dimethylformamide (DMF) or N-methyl-2-pyrrolidone (NMP) are highly toxic, limiting their potential for large-scale industrial applications. In this study, we address this challenge using Cyrene (dihydrolevoglucosenone), a nontoxic and biodegradabl...
Recent Advances on Thermochromic Inks for Security Applications
Oliveira, Duarte B.; Araújo, Andreia; Fortunato, Elvira; Martins, Rodrigo; Corvo, Marta C.; Carlos, EmanuelIn the security printing industry, high complexity stimuli-responsive functional inks have been used to develop anti-counterfeit elements, such as authentication markers and encrypted patterns. Through these applications, they create more reliable products, reduce economic losses, help retain brand identity, and assist in identifying counterfeit products. Thermochromic inks, owing to their temperature-responsiv...
Functional Materials for Environmental Energy Harvesting in Smart Agriculture v...
Silva, Rafael R.A.; Fatti, Giulio; Carlos, Emanuel; Ferreira, Guilherme; Goswami, Sumita; Nandy, Suman; Mattoso, Luiz H.C.; Fortunato, ElviraThe push for sustainable smart agriculture amid climate change and resource constraints demands innovative energy solutions that minimize environmental impact. This review explores next-generation harvesters—particularly functional triboelectric nanogenerators (TENGs)—and their potential to transform agriculture by converting ambient mechanical energy into electricity for self-powered sensors, enabling real-tim...