A5100632296- Wireless Body Area Networks
- Energy Harvesting in Wireless Networks
- Antenna Design and Analysis
- Energy Efficient Wireless Sensor Networks
- Neuroscience and Neural Engineering
- Wireless Power Transfer Systems
- Microwave Engineering and Waveguides
- EEG and Brain-Computer Interfaces
- Radio Frequency Integrated Circuit Design
- Advanced Antenna and Metasurface Technologies
- Advanced Fiber Optic Sensors
- Context-Aware Activity Recognition Systems
- IoT and Edge/Fog Computing
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Advanced Sensor and Energy Harvesting Materials
- Bluetooth and Wireless Communication Technologies
- Analytical Chemistry and Sensors
- RFID technology advancements
- 3D IC and TSV technologies
- Wireless Networks and Protocols
- Acoustic Wave Resonator Technologies
- Analog and Mixed-Signal Circuit Design
- Solar and Space Plasma Dynamics
- Neural dynamics and brain function
University of Minho
2016-2025
Centimfe
2022
Instituto Superior de Espinho
2022
Airbus (India)
2022
Tunis El Manar University
2017-2018
National Engineering School of Tunis
2018
International Iberian Nanotechnology Laboratory
2017
Polytechnic Institute of Viana do Castelo
2016
University of Aveiro
2016
Universidade Lusófona
2015
A wearable sensing glove for monitoring hand gestures and posture has been developed. The capability is based on optical fiber Bragg gratings (FBGs) sensors. These sensors, due to their inherent self-referencing multiplexing capability, are a value-added choice this application. single would cross all the with structures in specific spots, as finger joints. functionality performance of was fully evaluated. sensor response linear movements opening closing down. Through response, it possible...
A complementary p-n class-B oscillator with two magnetically coupled second harmonic tail resonators is presented and compared to an N-only reference one. An in depth analysis of phase noise, based on direct derivation the Impulse Sensitivity Function (ISF), provides design insights optimization resonators. In principle has same optimum Figure Merit (FoM) at half voltage swing. At a supply 1.5 V, maximum allowed oscillation amplitude constrained, by reliability considerations, be smaller...
Premature failure and degradation of layers are the main problems for transportation infrastructure. Addressing these issues necessitates implementing structural health monitoring (SHM) pavement construction layers. To this end, research investigated stress/strain damage detection capabilities a self-sensing cementitious composite developed potential utilization in an intelligent subgrade layer. The prepared consisted 10% cement hybrid conductive fillers, including multiwalled carbon...
A respiratory and cardiac-frequency sensor has been designed manufactured to monitor both components with a single fiber Bragg grating (FBG) sensor. The main innovation of the explored system is structure in which FBG embedded. specially developed polymeric foil allowed simultaneous detection heart rate respiration cycles. PVC enhance sensitivity. In order retrieve individually, signal processing was implemented for filtering out cardiac frequencies. solution tested along commercial device...
The objective of this work is the design and validation a directional Vivaldi antenna to detect tumor cells' electromagnetic waves with frequency around 5 GHz. proposed 33% smaller than traditional due use metamaterials in its design. It has an excellent return loss 25 dB at GHz adequate radiation characteristics as gain 6.2 unit cell size metamaterial 0.058λ × 0.054λ operation was designed optimized CST microwave software, measured simulated results were good agreement. experimental study...
Different implantable antenna designs exist to establish communication with devices depending on the domain of use and implantation space. Owing their nature purposes, these antennas have many imposed criteria various characteristics, such as bandwidth, multiband behavior, radiation pattern, gain, specific absorption rate (SAR). This presents a challenge when it comes achieving satisfying results without major compromise in any crucial parameters. Additionally, existing do not follow...
Em todo território nacional, seja nos espaços urbanos ou rurais, episódios envolvendo picadas de escorpiões estão cada vez mais frequentes. Grande parte casos registrados tem como ensejo as modificações no ambiente natural, responsável por causar alterações na cadeia alimentar e abrigo desses invertebrados. Neste contexto, esse estudo objetiva verificar o perfil demográfico acidentes com município Uberlândia entre os anos 2018 a 2023. Este trata-se uma pesquisa estatístico epidemiológica,...
New positioning solutions are a key factor in the pursuit of autonomous driving. GNSS is most common method, however traditional systems may have high position errors due to multipath signals. In this work, we present adaptive antenna with beamforming capabilities that can apply spatial filtering mitigate interferences and improve satellite connectivity, reducing error. The array, developed off-the-shelf antennas, was used demonstrate improvement gain, leading better signal noise ratio,...
This paper describes a CMOS interface for short-range wireless sensor networks (CMOS-SRWSN interface). The is composed of readout, electronics processing and control, memory, radio-frequency transceiver operation in the 2.4-GHz industrial, scientific, medical bands, planar antenna. receiver has sensitivity -60 dBm consumes 6.3 mW from 1.8-V supply. transmitter delivers an output power 0 with consumption 11.2 mW. application CMOS-SRWSN automotive industry reduction cables to support...
Electronic products, including sensors, are often used in harsh environments. However, many parameters, such as severe weather conditions, high electronic noise, or dangerous chemical compounds situ, may compromise the required reliability. Therefore, development of a reliable sensing solution for monitoring those extreme conditions become very challenging task. This paper presents smart skin foil developed to meet this specific need. Fiber Bragg grating one most sensor solutions nowadays,...
We present a new type of flexible dry copper electrodes based on Polydimethylsiloxane (PDMS) coatings, requiring no electrical contact with the body. Tests were performed in order to evaluate performance these types using electro-optic techniques, suitable for wearable devices. Conductive and insulated PDMS layers fabricated through spin coating process, reaching thickness 100μ. These then deposited top sheet. In first set experiments PDMS-based compared Ag/AgCl pre-gelled electrodes,...
This paper reports on a polymer-based piezoelectric transducer used in microfluidic structures for generating acoustic waves, and consequently, the streaming phenomenon, that will improve mixing of fluids. The is based poly(vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), copolymer with conductive transparent electrodes aluminum doped zinc oxide (AZO). efficiency optimized P(VDF-TrFE) fluids was studied using two diagnostic kits quantification uric acid nitrite blood. In both cases,...
The SARS-CoV-2 pandemic emphasized effective cleaning and disinfection of common spaces as an essential tool to mitigate viral transmission. To address this problem, decontamination technologies based on UV-C light are being used. Our aim was generate coherent translational datasets UV-C-based inactivation protocols for the application surfaces with different compositions. Virus infectivity after exposure several porous (bed linen, various types upholstery, synthetic leather, clothing)...
As electrodes are required to interact with sub-millimeter neural structures, innovative microfabrication processes enable fabrication of microdevices involved in such stimulation and/or recording. This requires the development highly integrated and miniaturized systems, comprising die-integration-compatible technology flexible microelectrodes. To elicit selective recordings sub-neural process flow can beneficiate from integration titanium nitride (TiN) microelectrodes onto a polyimide...