Joel Borges
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View article: Influence of composition and microstructure of ZnxTiyO thin films on their chemical resistance and antifungal properties
Influence of composition and microstructure of ZnxTiyO thin films on their chemical resistance and antifungal properties Open
View article: Spectroscopic Real-Time Monitoring of Plasmonic Gold Nanoparticle Formation in ZnO Thin Films via Pulsed Laser Annealing
Spectroscopic Real-Time Monitoring of Plasmonic Gold Nanoparticle Formation in ZnO Thin Films via Pulsed Laser Annealing Open
We demonstrate that pulsed laser annealing induces the formation of plasmonic gold nanoparticles in ZnO thin films, with the process monitored in real-time through pulse-by-pulse spectroscopy. Gold nanoparticles (smaller than 5 nm) were in…
View article: Effect of the Different Growth Shapes on the Electrochemical Behavior of Ti Thin Films for Medical Applications
Effect of the Different Growth Shapes on the Electrochemical Behavior of Ti Thin Films for Medical Applications Open
The response of titanium (Ti) thin films is closely related to their microstructure, which is extremely sensitive to the selected deposition parameters and geometrical configurations. The present study investigates the impact of geometrica…
View article: Recent advances in metal-based antimicrobial coatings
Recent advances in metal-based antimicrobial coatings Open
Metal-based antimicrobial coatings have garnered significant attention due to their potential to mitigate microbial contamination across various industries. This systematic review examines the advancements in metal- and metal compound-base…
View article: Advancements in Electrochromic Technology for Multifunctional Flexible Devices
Advancements in Electrochromic Technology for Multifunctional Flexible Devices Open
The design and investigation of electrochromic devices have advanced significantly, including distinct applications such as self-charged smart windows, aerospace interactive windows, low power flexible and ecofriendly displays, automatic d…
View article: INTERVENÇÃO GRUPAL EM FAMÍLIA: Adolescentes com déficit cognitivo que cometeram ofensa sexual
INTERVENÇÃO GRUPAL EM FAMÍLIA: Adolescentes com déficit cognitivo que cometeram ofensa sexual Open
The care of adolescents with intellectual disabilities (ID) who commit sexual offenses has historically been neglected. Recently, the approach has changed, recognizing the possibility of rehabilitation rather than punishment. This study re…
View article: Influence of Plasmonic Thin-Film-Coated Photobioreactors on Microalgal Biomass Composition
Influence of Plasmonic Thin-Film-Coated Photobioreactors on Microalgal Biomass Composition Open
Microalgae emerge as an eco-friendly solution for food, feed, pharmaceutical, energy, and environmental remediation, providing a diverse range of valuable biocompounds to address the growing global demand. However, light conditions pose su…
View article: Long-Term Hydrophilic Polydimethylsiloxane (Pdms) Surfaces Using Brij L4: A Simple and Robust Approach for Biomedical Applications
Long-Term Hydrophilic Polydimethylsiloxane (Pdms) Surfaces Using Brij L4: A Simple and Robust Approach for Biomedical Applications Open
View article: ALFABETIZAÇÃO E LETRAMENTO NO ENSINO FUNDAMENTAL I: DESAFIOS, ESTRATÉGIAS E PERSPECTIVAS
ALFABETIZAÇÃO E LETRAMENTO NO ENSINO FUNDAMENTAL I: DESAFIOS, ESTRATÉGIAS E PERSPECTIVAS Open
A alfabetização e o letramento são processos fundamentais para o desenvolvimento educacional e social, especialmente nos anos iniciais do Ensino Fundamental I. Este artigo analisa os desafios e estratégias relacionados a esses processos, c…
View article: Classification of Real-World Objects Using Supervised ML-Assisted Polarimetry: Cost/Benefit Analysis
Classification of Real-World Objects Using Supervised ML-Assisted Polarimetry: Cost/Benefit Analysis Open
We study the problem of classification of various real-world objects using as input a database (DB) of laboratory polarimetric measures (Mueller matrix elements—MMEs). It can work as a complementary technology of surroundings’ imaging that…
View article: Label-free localized surface plasmon resonance (LSPR) biosensor, based on Au-Ag NPs embedded in TiO2 matrix, for detection of Ochratoxin-A (OTA) in wine
Label-free localized surface plasmon resonance (LSPR) biosensor, based on Au-Ag NPs embedded in TiO2 matrix, for detection of Ochratoxin-A (OTA) in wine Open
Ochratoxin-A (OTA) is a widespread foodstuff contaminant with potential carcinogenic effects. Innovative sensing technologies that allow on-site and sensitive food screening can have a significant impact on food and environment safety. A n…
View article: New Parameter for Benchmarking Plasmonic Gas Sensors Demonstrated with Densely Packed Au Nanoparticle Layers
New Parameter for Benchmarking Plasmonic Gas Sensors Demonstrated with Densely Packed Au Nanoparticle Layers Open
Localized surface plasmon resonance (LSPR) gas sensitivity is introduced as a new parameter to evaluate the performance of plasmonic gas sensors. A model is proposed to consider the plasmonic sensors' surface sensitivity and plasmon decay …
View article: Niobium Oxide Thin Films Grown on Flexible ITO-Coated PET Substrates
Niobium Oxide Thin Films Grown on Flexible ITO-Coated PET Substrates Open
Niobium oxide thin films were grown on both rigid and flexible substrates using DC magnetron sputtering for electrochromic applications. Three experimental series were conducted, varying the oxygen to argon flow rate ratio and deposition t…
View article: Immobilizing antibody biorecognition layers on Au–TiO<sub>2</sub> thin films: direct (physisorption) vs. DSP-crosslinking (chemisorption) surface functionalization
Immobilizing antibody biorecognition layers on Au–TiO<sub>2</sub> thin films: direct (physisorption) vs. DSP-crosslinking (chemisorption) surface functionalization Open
The immobilization design strategy plays an important role in biosensor development and its sensing performance. Both adsorption (physisorption) and cross-linker functionalization (chemisorption) are common approaches for immobilizing a bi…
View article: Polydimethylsiloxane Surface Modification of Microfluidic Devices for Blood Plasma Separation
Polydimethylsiloxane Surface Modification of Microfluidic Devices for Blood Plasma Separation Open
Over the last decade, researchers have developed a variety of new analytical and clinical diagnostic devices. These devices are predominantly based on microfluidic technologies, where biological samples can be processed and manipulated for…
View article: Critical Issues on the Surface Functionalization of Plasmonic Au-Ag/TiO2 Thin Films with Thiolated Oligonucleotide-Based Biorecognition Elements
Critical Issues on the Surface Functionalization of Plasmonic Au-Ag/TiO2 Thin Films with Thiolated Oligonucleotide-Based Biorecognition Elements Open
This work reports on the surface functionalization of a nanomaterial supporting localized surface plasmon resonances (LSPRs) with (synthetic) thiolated oligonucleotide-based biorecognition elements, envisaging the development of selective …
View article: Transmission electron microscopy reveals clusters of Au–Ag nanoparticles formed in TiO<sub>2</sub> thin film, with enhanced plasmonic response
Transmission electron microscopy reveals clusters of Au–Ag nanoparticles formed in TiO<sub>2</sub> thin film, with enhanced plasmonic response Open
This work reports on the influence of nanoparticle (NP) size distribution and the chemical nature of gold (Au) and/or silver (Ag) NPs in the localized surface plasmon resonance (LSPR) responses. The NPs were produced embedded in a titanium…
View article: Experimental and Theoretical Studies on Ag Nanoparticles with Enhanced Plasmonic Response, Formed Within Al2O3 Thin Films Deposited by Magnetron Sputtering
Experimental and Theoretical Studies on Ag Nanoparticles with Enhanced Plasmonic Response, Formed Within Al2O3 Thin Films Deposited by Magnetron Sputtering Open
Reactive magnetron sputtering was employed to prepare nanocomposite thin films of Ag/Al 2 O 3 , on a glass substrate. The films are characterized by the formation of Ag nanoparticles embedded in the Al 2 O 3 matrix, after thermal treatment…
View article: Safeguarding Cork’s Beauty and Longevity: Innovations in Deposition of Protective Thin Films
Safeguarding Cork’s Beauty and Longevity: Innovations in Deposition of Protective Thin Films Open
Cork is a sustainable natural material widely used as a wine stopper. However, some other uses, such as wall coverings, flooring, bags and shoes, face UV damage. To mitigate this issue, we explored the deposition of TiO2 and ZnO thin films…
View article: Enhancing the Extinction Efficiency and Plasmonic Response of Bimetallic Nanoparticles of Au-Ag in Robust Thin Film Sensing Platforms
Enhancing the Extinction Efficiency and Plasmonic Response of Bimetallic Nanoparticles of Au-Ag in Robust Thin Film Sensing Platforms Open
The extinction efficiency of noble metal nanoparticles (NPs), namely gold (Au) and silver (Ag), are dependent on their size and surrounding dielectric. Exploiting the Localized Surface Plasmon Resonance (LSPR) phenomenon, the composition a…
View article: Tuning the Refractive Index Sensitivity of LSPR Transducers Based on Nanocomposite Thin Films Composed of Noble Metal Nanoparticles Dispersed in TiO2
Tuning the Refractive Index Sensitivity of LSPR Transducers Based on Nanocomposite Thin Films Composed of Noble Metal Nanoparticles Dispersed in TiO2 Open
This work reports on the development of nanoplasmonic thin films consisting of Au, Ag, or Au-Ag nanoparticles dispersed in a TiO2 matrix and the optimization of the deposition parameters to tune their optical response. The thin films were …
View article: Nanoplasmonic Au:CuO thin films functionalized with APTES to enhance the sensitivity of gas sensors
Nanoplasmonic Au:CuO thin films functionalized with APTES to enhance the sensitivity of gas sensors Open
Carbon monoxide (CO) is a highly flammable and toxic gas to humans and animals, that's why its detection and monitoring are crucial. A promising technique to develop a robust and cheap gas sensor, operating at room temperature, is Localize…
View article: Plasmonic Au nanoparticles by ion implantation
Plasmonic Au nanoparticles by ion implantation Open
This paper studies Au-nanoparticles' (AuNPs) formation in titanium dioxide (TiO2) by ion implantation. Samples of TiO2 thin films deposited on glass and silicon were prepared using magnetron sputtering. Ion implantation was used to create …
View article: Recent advances in nanomaterial-based optical biosensors for food safety applications: Ochratoxin-A detection, as case study
Recent advances in nanomaterial-based optical biosensors for food safety applications: Ochratoxin-A detection, as case study Open
Global population growth tremendously impacts the global food industry, endangering food safety and quality. Mycotoxins, particularly Ochratoxin-A (OTA), emerge as a food chain production threat, since it is produced by fungus that contami…
View article: Chitosan Micro-Membranes with Integrated Gold Nanoparticles as an LSPR-Based Sensing Platform
Chitosan Micro-Membranes with Integrated Gold Nanoparticles as an LSPR-Based Sensing Platform Open
Currently, there is an increasing need to develop highly sensitive plasmonic sensors able to provide good biocompatibility, flexibility, and optical stability to detect low levels of analytes in biological media. In this study, gold nanopa…
View article: Optimization of Au:CuO Thin Films by Plasma Surface Modification for High-Resolution LSPR Gas Sensing at Room Temperature
Optimization of Au:CuO Thin Films by Plasma Surface Modification for High-Resolution LSPR Gas Sensing at Room Temperature Open
In this study, thin films composed of gold nanoparticles embedded in a copper oxide matrix (Au:CuO), manifesting Localized Surface Plasmon Resonance (LSPR) behavior, were produced by reactive DC magnetron sputtering and post-deposition in-…
View article: Immobilization of Streptavidin on a Plasmonic Au-TiO2 Thin Film towards an LSPR Biosensing Platform
Immobilization of Streptavidin on a Plasmonic Au-TiO2 Thin Film towards an LSPR Biosensing Platform Open
Optical biosensors based on localized surface plasmon resonance (LSPR) are the future of label-free detection methods. This work reports the development of plasmonic thin films, containing Au nanoparticles dispersed in a TiO2 matrix, as pl…
View article: Plasmonic Strain Sensors Based on Au-TiO2 Thin Films on Flexible Substrates
Plasmonic Strain Sensors Based on Au-TiO2 Thin Films on Flexible Substrates Open
This study aimed at introducing thin films exhibiting the localized surface plasmon resonance (LSPR) phenomenon with a reversible optical response to repeated uniaxial strain. The sensing platform was prepared by growing gold (Au) nanopart…
View article: Me-Doped Ti–Me Intermetallic Thin Films Used for Dry Biopotential Electrodes: A Comparative Case Study
Me-Doped Ti–Me Intermetallic Thin Films Used for Dry Biopotential Electrodes: A Comparative Case Study Open
In a new era for digital health, dry electrodes for biopotential measurement enable the monitoring of essential vital functions outside of specialized healthcare centers. In this paper, a new type of nanostructured titanium-based thin film…
View article: Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies
Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies Open
This work presents a comprehensive review on gas sensors based on localized surface plasmon resonance (LSPR) phenomenon, including the theory of LSPR, the synthesis of nanoparticle-embedded oxide thin films, and strategies to enhance the s…