Carlos Fonseca

ORCID: 0000-0002-2759-0384
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About
Contact & Profiles
Research Areas
  • Neuroscience and Neural Engineering
  • EEG and Brain-Computer Interfaces
  • Metal and Thin Film Mechanics
  • Semiconductor materials and devices
  • Advanced Sensor and Energy Harvesting Materials
  • Conducting polymers and applications
  • Anodic Oxide Films and Nanostructures
  • Neural dynamics and brain function
  • Silicon Nanostructures and Photoluminescence
  • Molecular Junctions and Nanostructures
  • Hydrogen embrittlement and corrosion behaviors in metals
  • Advanced Memory and Neural Computing
  • Electrodeposition and Electroless Coatings
  • Semiconductor materials and interfaces
  • Copper Interconnects and Reliability
  • Advanced materials and composites
  • Orthopaedic implants and arthroplasty
  • MXene and MAX Phase Materials
  • Gaze Tracking and Assistive Technology
  • Analytical Chemistry and Sensors
  • Titanium Alloys Microstructure and Properties
  • Integrated Circuits and Semiconductor Failure Analysis
  • Corrosion Behavior and Inhibition
  • Lubricants and Their Additives
  • Bone Tissue Engineering Materials

Universidade do Porto
2015-2025

Institute of Mechanical Engineering and Industrial Mangement
2003-2025

Medisch Centrum Leeuwarden
2023

University of Coimbra
2011-2018

Technische Universität Ilmenau
2013

National University of Distance Education
2010

Biomatériaux et Bioingénierie
2006

Centre National de la Recherche Scientifique
1995-1998

Institute for the Dynamics of Environmental Processes
1998

École Polytechnique
1995-1998

The design and testing of a "dry" active electrode for electroencephalographic recording is described. A comparative study between the EEG signals recorded in human volunteers simultaneously with classical Ag-AgCl electrodes was carried out reported preliminary results are consistent better performance these devices over conventional electrodes.

10.1109/tbme.2006.884649 article EN IEEE Transactions on Biomedical Engineering 2006-12-19

In state-of-the-art electroencephalography (EEG) Silver/Silver-Chloride electrodes are applied together with electrolyte gels or pastes. Their application requires extensive preparation, trained medical staff and limits measurement time mobility. We recently proposed a novel multichannel cap system for dry EEG mobile out-of-the-lab acquisition. During the tests these polymer-based multipin electrodes, we observed that quality of recording depends on normal force resulting contact pressure....

10.1109/tnsre.2018.2811752 article EN IEEE Transactions on Neural Systems and Rehabilitation Engineering 2018-03-06

Abstract High‐density electroencephalography (HD‐EEG) is currently limited to laboratory environments since state‐of‐the‐art electrode caps require skilled staff and extensive preparation. We propose evaluate a 256‐channel cap with dry multipin electrodes for HD‐EEG. describe the designs of made from polyurethane coated Ag/AgCl. compare in study 30 volunteers novel HD‐EEG conventional gel‐based electrode‐skin impedances, resting state EEG, visual evoked potentials (VEP). perform wearing...

10.1002/hbm.25721 article EN Human Brain Mapping 2021-11-19

With the wind turbine industry growing and increasingly turning its focus to offshore sector, it is important grasp challenges that come with it: logistic related transport maintenance, exposure wave action also vulnerability corrosion. The marine environment a complex aggressively corrosive environment. S690 steel, as structural steel of high mechanical strength, offers weight reduction advantages are interest sector. However, behaviour in medium still not well known. As such, this work...

10.1016/j.engfailanal.2024.108613 article EN cc-by-nc Engineering Failure Analysis 2024-07-06

A potential new area of routine application for electroencephalography (EEG) is the brain-computer interface, which might enable disabled people to interact with their environment, based on measured brain signals. However, conventional not suitable here due limitations arising from complicated, time-consuming and error-prone preparation. Recently, several approaches dry electrodes have been proposed. Our aim comparison assessment three types standard wet silver/silver-chloride EEG signal...

10.21014/acta_imeko.v3i3.94 article EN ACTA IMEKO 2014-09-23

Several plasma treatments using argon, oxygen, and nitrogen are studied in order to increase the interfacial adhesion of polyurethane/Ag:TiN system be used as biopotential electrodes. The optimized conditions (100 W, 15 min, regardless gas) promote a steep decrease water contact angle values. observed chemical topographic alterations translate into excellent treated samples. in‐service validation proposed Ag:TiN‐coated PU multipin electrodes is performed by acquiring EEG signals parallel...

10.1002/ppap.201500063 article EN Plasma Processes and Polymers 2015-06-24

Dry electrodes for electroencephalography (EEG) allow new fields of application, including telemedicine, mobile EEG, emergency and long-term repetitive measurements research, neurofeedback, or brain-computer interfaces. Different dry electrode technologies have been proposed validated in comparison to conventional gel-based electrodes. Most previous studies performed at a single center by operators. We conducted multi-center multi-operator study validating multipin the reproducibility...

10.3390/s22208079 article EN cc-by Sensors 2022-10-21

Realizing the vision of using AI agents to automate critical IT tasks depends on ability measure and understand effectiveness proposed solutions. We introduce ITBench, a framework that offers systematic methodology for benchmarking address real-world automation tasks. Our initial release targets three key areas: Site Reliability Engineering (SRE), Compliance Security Operations (CISO), Financial (FinOps). The design enables researchers challenges opportunities with push-button workflows...

10.48550/arxiv.2502.05352 preprint EN arXiv (Cornell University) 2025-02-07

Abstract The use of biological materials in the construction bioprostheses requires application different chemical procedures to improve durability material without producing any undesirable effects. A number crosslinking methods have been tested tissues composed mainly collagen. aim this study was evaluate vitro biocompatibility, mechanical properties, and vivo calcification chemically modified bovine pericardium using glutaraldehyde acetals (GAAs) comparison with (GA) treatment. Homsy's...

10.1111/j.1525-1594.2009.00978.x article EN Artificial Organs 2010-05-01
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