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18th International Workshop on Impedance Spectroscopy, September 23 - September 26, 2025
Keynotes
18th International Workshop on Impedance Spectroscopy, September 23 - September 26, 2025 
Keynotes

Keynotes

Prof. Errachid's photo

Prof. Abdelhamid Errachid

Institute of Analytical Sciences (ISA), UMR 5280, Université Claude Bernard Lyon 1, Villeurbanne, France
Integration of Advanced Tools into a Point-of-Care System for Saliva Analysis: Application to Heart Failure

Prof. Abdelhamid Errachid was born in Khenifra, Morocco (1966) and obtained his PhD from Universitat Autonoma de Barcelona in 1997. He has been Full Professor at Université Claude Bernard Lyon 1 since 2008 and currently heads the Micro & Nanobiotechnology group at the Institute of Analytical Sciences (ISA).

With over 170 scientific journal papers, 495 conference papers, 11 book chapters, and 4 patents, he is a leading expert in electrochemical biosensors, field-effect transistors, and micro/nanoelectrodes. His research has led several major European projects (FP6, FP7, H2020) and focuses on flexible bioMEMS, Lab-on-Chip devices, and novel biosensor technologies for medical diagnostics including COVID-19 detection and heart failure monitoring.

Education & Early Career

Born in Khenifra, Morocco, in 1966, Abdelhamid Errachid graduated in physics from the University M. Ismail, Meknes, in 1992, and received his PhD degree in electronic engineering from Universitat Autonoma de Barcelona, Spain, in 1997. From 1992-2001, he worked at Centro Nacional de Microelectronica (CNM) as a PhD student and post-doctoral researcher.

Academic Career Progression

From 2001-2008, he worked as a senior researcher at the Department de Electronica, Universidad de Barcelona and IBEC, participating in the Spanish "Ramon y Cajal" Program. Since the end of 2008, he has been a Full Professor at the University Claude Bernard-Lyon 1, where he leads cutting-edge research in micro and nanobiotechnology.

Research Leadership & European Projects

  • Coordinator and principal investigator in several European Framework Programmes
  • FP6 projects: DVT-IMP, MAPTech, SPOT-NOSED, Nano2Life, Ares, Vector
  • FP7 projects: SensorART, BOND
  • H2020 projects: HEARTEN
  • International collaborations: NATO, INTAS, and TEMPUS projects
  • National Spanish projects: MIROMINCE, MINAHE I, MINAHE II, and PETRI

Technical Expertise & Innovations

  • Silicon-based (bio)chemical sensors using field-effect transistors
  • Micro/nanoelectrode structures and their characterization
  • Novel low-cost nano-devices on flexible substrates
  • Plasma treatments and submerged nano-contact printing
  • Electroless deposition and electrochemical characterization
  • Impedance spectroscopy for biosensor applications

Current Research Focus

  • Flexible BioMEMS for (bio)chemical sensor applications
  • Microfluidic systems integration with biosensor platforms
  • COVID-19 detection using nanostructured sensor platforms
  • Heart failure monitoring through cytokine detection in saliva
  • Lab-on-Chip devices for point-of-care diagnostics
  • Environmental monitoring sensors for pesticide detection

Scientific Impact & Publications

Prof. Errachid is the author or co-author of more than 170 papers in scientific journals, 495 papers in peer-reviewed conference proceedings, more than 11 chapters in books, and the inventor of 4 patents under the Patent Cooperation Treaty. His deep knowledge of electronic devices and the interplay between (bio)chemical molecules and electronics has resulted in groundbreaking biosensor developments.

Leadership Positions

He was head of the SIMS (Surfaces-(bio) Interface-Micro/nano Systèmes) group from 2009 until 2013, and currently heads the Micro & Nanobiotechnology group at ISA. His leadership has been instrumental in developing original nanosensor devices, including those based on olfactory proteins developed under the SPOT-NOSED project.

Prof. Bertemes-Filho's photo

Prof. Pedro Bertemes-Filho

Department of Electrical Engineering, Santa Catarina State University (UDESC), Joinville, Brazil
Bioimpedance instrumentation advances: towards wearable biosensing

Prof. Pedro Bertemes-Filho was born in Florianópolis, Brazil (1970) and received his PhD in Medical Physics from the University of Sheffield, UK (2002). He has been a Full Professor at Santa Catarina State University (UDESC) since 2004, where he coordinates research groups in biomedical engineering and electrical bioimpedance.

As a Senior IEEE member since 2020 and Secretary of the International Society for Electrical Bioimpedance (ISEBI), his research focuses on electrical bioimpedance, bioinstrumentation, biosensors, and e-Health applications. He has organized the Latin American Conference on Bioimpedance and edited international books including "Bioimpedance in Biomedical Applications and Research" by Springer. His current research includes cancer detection using bioimpedance spectroscopy for cervical tissue analysis across multiple health units in Santa Catarina state.

Education & International Experience

Born in Florianópolis, Brazil, on March 10, 1970, Pedro Bertemes-Filho pursued his education in electrical engineering, graduating from the State University of Santa Catarina (UDESC) in 1995. He continued with a Master's degree in Biomedical Engineering from the Federal University of Santa Catarina (UFSC) in 1998, before pursuing his PhD in Medical Physics at the prestigious University of Sheffield, UK, completing it in 2002.

International Collaborations & Research Experience

His international experience includes a Fulbright fellowship at Dartmouth College, USA, and a visiting researcher position at the University of Ljubljana, Slovenia. These collaborations significantly broadened his research perspective and established valuable international networks in biomedical engineering and bioimpedance research.

Academic Career & Leadership Positions

  • Full Professor at UDESC since 2004, lecturing on electronic instrumentation and biomedical engineering
  • Senior IEEE member since 2020, recognizing his contributions to the field
  • Secretary of the International Society for Electrical Bioimpedance (ISEBI)
  • Coordinator of research groups in biomedical engineering and electrical bioimpedance
  • Developer of graduate-level courses in biomedical instrumentation

Research Focus & Clinical Applications

  • Electrical bioimpedance and bioinstrumentation for medical diagnostics
  • Biosensors development for health monitoring and e-Health applications
  • Cancer detection using bioimpedance spectroscopy, particularly cervical tissue analysis
  • Clinical research projects across multiple health units in Santa Catarina state
  • Development of wireless signal transmission systems for EEG, ECG, and EMG in hospital environments

Scientific Leadership & Publications

Prof. Bertemes-Filho organized the first Latin American Conference on Bioimpedance (CLABIO 2012) in Joinville, establishing a regional platform for bioimpedance research collaboration. He has edited several international books, including "Bioimpedance in Biomedical Applications and Research" and "Medicine-Based Informatics and Engineering" published by Springer, contributing significantly to the dissemination of knowledge in the field.

Current Research Projects

He currently coordinates major research projects funded by PPSUSFAPESC, focused on electronic investigation of cervical cancer compared to directed biopsy examinations, involving five health units across Santa Catarina state. This work represents a significant advancement in non-invasive cancer detection methodologies.

Dr. Kallel's photo

Dr.-Ing. Ahmed Yahia Kallel

Chair for Measurement and Sensor Technology, Chemnitz University of Technology, Germany
Optimized Excitation Signals for Next-Generation Impedance Spectroscopy: From Theory to Embedded Implementation

Dr.-Ing. Ahmed Yahia Kallel was born in Tunisia (1993) and is currently Group Leader for Impedance Spectroscopy and Measurement Systems at TU Chemnitz. He completed his doctoral research in Electrical Engineering at TU Chemnitz (2024), focusing on optimized broadband excitation signals for consistent impedance spectroscopy measurements.

A Sigma-Xi member since 2023, he holds a Dipl.-Ing. in electrical engineering and M.Sc. in embedded systems from the National Engineering School of Sfax, Tunisia. With 50+ scientific publications and 352+ citations, his research focuses on digital signal processing, excitation signal design, and embedded systems for impedance spectroscopy applications including Li-ion battery diagnostics, bioimpedance systems, and measurement technologies. His innovative work on multisine signal optimization and crest factor reduction has significantly advanced the field of embedded impedance spectroscopy.

Education & Academic Journey

Born in Tunisia in 1993, Ahmed Yahia Kallel pursued his engineering education at the National Engineering School of Sfax (ENIS), where he earned his Dipl.-Ing. in electrical engineering in 2016, followed by an M.Sc. in embedded systems in 2018. He then moved to Germany to pursue his doctoral studies at TU Chemnitz, completing his Dr.-Ing. degree in 2024 with a dissertation on "Design of Optimized Broadband Excitation Signals for Consistent Impedance Spectroscopy Measurements."

Research Leadership & Current Position

  • Group Leader for Impedance Spectroscopy and Measurement Systems at TU Chemnitz
  • Sigma-Xi member since 2023, recognizing excellence in scientific research
  • Active reviewer for 70+ journal articles in impedance spectroscopy and signal processing
  • Coordinator of international research collaborations in embedded bioimpedance systems
  • Developer of cutting-edge measurement technologies for industrial applications

Core Research Expertise

  • Advanced digital signal processing for impedance spectroscopy applications
  • Excitation signal design and optimization for multisine measurements
  • Crest factor optimization using hybrid stochastic-deterministic algorithms
  • Embedded system design for wearable bioimpedance spectroscopy
  • Machine learning applications in biomedical signal processing
  • Battery management systems and Li-ion battery diagnostics

Innovative Technical Contributions

  • Development of time-efficient hybrid optimization methods for multisine signals
  • Novel approaches to maintaining stability conditions in low-frequency impedance measurements
  • Critical implementation solutions for resource-limited embedded bioimpedance systems
  • Advanced algorithms for noise reduction and signal enhancement in impedance spectra
  • Regularized Linear Kramers-Kronig transforms for consistency checking
  • Binary excitation sequences for stable battery impedance spectroscopy

Applications & Impact Areas

  • Wearable biomedical devices for continuous health monitoring
  • Electric vehicle battery diagnostics and state-of-health assessment
  • Food quality assessment using impedance-based sensor systems
  • Cable fault detection and infrastructure monitoring
  • Tissue state monitoring for medical diagnostics
  • Environmental sensing and industrial process control

Scientific Publications & Recognition

Dr. Kallel has authored over 50 scientific publications in high-impact journals and conferences, with his work being cited more than 352 times. His research spans impedance spectroscopy, measurement technologies, digital signal processing, and embedded systems. Notable publications include groundbreaking work on multisine signal optimization in Batteries, embedded bioimpedance systems in Sensors, and comprehensive reviews in Electrochimica Acta.

International Collaboration

His research involves extensive international collaborations, including projects with institutions in Tunisia, France, and other European countries. He has been instrumental in developing measurement systems that bridge theoretical advances with practical embedded implementations, making sophisticated impedance spectroscopy techniques accessible for real-world applications.

Current Research Focus

His current work concentrates on pushing the boundaries of embedded impedance spectroscopy through optimized excitation signal design, with particular emphasis on maintaining measurement consistency while minimizing computational requirements. This research is critical for the next generation of portable, battery-powered diagnostic devices and IoT sensor networks.