George Junior is a Research Engineer at INL, within the Microfabrication and Exploratory Nanotechnology group. He has a master degree in Physics and a PhD on Materials Engineering both from the University of Minho. During the master, he developed solar cells of amorphous silicon in flexible substrates. As a continuation of his master project, he works at INL on the period of 2010-2011 developing silicon solar cells. Next years, he was a teacher at Estácio de Sá University, Brazil.

He joined INL again in 2013 to pursue his PhD degree on microfabrication of graphene field-effect transistor for biosensing applications. He specialized on thin film deposition (graphene), transfer and characterization (mainly Raman spectroscopy), and on devices fabrication. During 2017, he worked at Cornell NanoScale Science and Technology Facility (CNF), Cornell University, developing graphene transistors for a spin-off project, as a researcher from UFMG, Brazil. He is currently developing the deposition of vertically-aligned carbon nanotubes at INL.

• R. Campos, J. Borme, G. Machado Jr, M. F. Cerqueira and P. Alpuim
  Attomolar Label-Free Detection of DNA Hybridization with Electrolyte-Gated Graphene Field-Effect Transistors
  ACS Sensors 2019, 4, 2, 286-293

• R. Campos, G. Machado Jr., M.F. Cerqueira, J. Borme and P. Alpuim
  Wafer Scale Fabrication of Graphene Microelectrode Arrays for the Detection of DNA Hybridization
  Microelectronic Engineering 189 (2018) 85-90

• N. C. S. Vieira, J. Borme, G. Machado Jr., F. Cerqueira, P. P. Freitas, V. Zucolotto, N. M. R. Peres and P. Alpuim,
  Graphene Field-Effect Transistor Array with Integrated Electrolytic Gates Scaled To 200 Mm
  J. Phys.: Condens. Matter 28 085302 (2016)

• Alpuim, P., Cerqueira, M.F., Iglesias, V., Machado, G. and Borme, J.,
  Laser Patterning of Amorphous Silicon Thin Films Deposited on Flexible and Rigid Substrates
  Phys. Status Solidi A 213, No. 7, 1717–1727 (2016)

• S. Asgarifar, H. L. Gomes, A. Mestre, P. Inácio, J. Bragança, J. Borme, G. Machado, F. Cerqueira and P. Alpuim,
  Electrochemically Gated Graphene Field-Effect Transistor for Extracellular Cell Signal Recording
  Technological Innovation for Cyber-Physical Systems Volume 470 of the series IFIP Advances in Information and Communication Technology pp 558-564