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Creating and sharing knowledge in communications and information technology
... George Luiz Machado Junior

Researcher

George Junior

Academic position: Researcher
Joining date: 01-12-2025
Roles in IT: Researcher
Thematic Line: Optics and Photonics
Group: Optical Sensors and Integrated Photonics - Av
IT – Aveiro
Instituto de Telecomunicações
Campus Universitário de Santiago
P-3810-193 AVEIRO - PORTUGAL
Tel: +351 234 377 900
Email: Send Email
Collaboration Network

Bio

Engineer and researcher with a degree in Physics (University of Minho), a Master’s in silicon solar cells (CVD), and a PhD in graphene-based electronic devices. Over 10 years of experience in micro- and nanofabrication, advanced materials, and management of high-complexity cleanrooms in academic and industrial environments.
Specialist in cleanroom implementation, operation, and optimization, including infrastructure design (HVAC, process gases, chemicals, EHS, ESD, and contamination control), SOP development, cleanroom classification, user training, access management, inventory control, chemical and wafer handling, and equipment maintenance. Strong expertise in UV and nanoimprint lithography, CVD/PECVD, ICP-RIE, CMP, and electrical characterization.
Extensive R&D experience focused on carbon nanotubes, graphene, and 1D/2D materials, as well as fabrication of Magnetic Tunnel Junctions (MTJs) at INL. Direct support for projects involving electronic devices, sensors, and MEMS, ensuring process reproducibility, yield, and technology transfer.
Author and co-author of peer-reviewed publications indexed on Google Scholar, including:
• 0.4 mm vertically aligned carbon nanotubes from a cold wall CVD system
• Wafer scale fabrication of graphene microelectrode arrays for the detection of DNA hybridization
• Graphene field-effect transistor array with integrated electrolytic gates scaled to 200 mm
• Planar solution-gated graphene field-effect transistors for biosensing
International experience in Portugal, Brazil, and the United States (Cornell University). Profile oriented toward safety, quality, operational efficiency, and technical leadership, aligning cleanroom capabilities with research and technological development goals.


Scientific Achievements

  • PhD, Universidade do Minho, 13-07-2018
  • MSc, Universidade do Minho, 01-07-2011
  • CENTITVC - Centro de Nanotecnologia e Materiais Técnicos Funcionais e Inteligentes, 01-11-2024 - 30-11-2025, Facility Manager Cleanroom