Rafael Gregorio Mendes, Ph.D

Exploring 2D Materials Atom-by-Atom Using TEM

Curriculum Vitae


GOALS

I am passionate about the in situ fabrication and characterization of 2D nanomaterials atom-by-atom, utilizing high-end double-aberration-corrected TEM to manipulate and probe their properties (e.g., surface plasmon and electronic bandgap) across different microscope conditons (e.g., local atmosphere, electron dose, and acceleration potential). My expertise spans a broad range of advanced microscopy techniques and tools, complemented by a strong commitment to training personnel and students. 
 

CURRENT POSITION

  • Nov/2023 - Present: Researcher | Associate professor (In situ TEM and 2D nanomaterials)
    CNRS/ICMN – Interfaces, Confinement, Materials and Nanostructures, France
  •   Feb/2024 - Present: Guest researcher
    Utrecht University - Debye Institute for Nanomaterials Science | Soft Condensed Matter, The Netherlands

 KEY EXPERTISE AND TECHNICAL SKILLS

  • Microscopes operated:
    • ThermoFisherScientific system (Talos F200X, Titan, Themis, and Spectra (XFEG and cold FEG)
    • JEOL system (Arm200F cold FEG)
  • Operation modes
    • TEM and STEM modes (image and probe aberration-corrected)
  • Techniques mastered:
    • Atomic-resolution imaging (TEM and STEM modes), diffraction, EDS, EFTEM, 4D STEM, DPC, iDPC.
    • Monochromated beam for higher energy resolution and low-loss EELS (bandgap and plasmon mapping).
    • Core EELS (chemical analysis, elemental mapping).
    • Lorentz microscopy
    • Electron tomography (3D imaging).
    • In situ TEM using heating chips and gas cells. 
  • Electron microscopy software proficiency:
    • Expertise in Digital Micrograph, Velox, TFS Tomography (TEM and STEM), TOMVIZ, Origin, Avogadro, and VESTA

ACCOMPLISHMENTS

  • International research projects:  I have authored, participated in, and coordinated multiple international research projects, delivering outstanding scientific output with high-impact publications and novel discoveries. 
  • Personnel and student trainning:  I have extensive experience coordinating staff and student training in Germany, China, The Netherlands, and France equipping researchers to operate and analyze data from double-aberration-corrected TEM systems. 
  • Responsible for 2 lecture modules in France: 1) Electron microscopy and 2) Optoelectronic properties of 2D materials.
  • Delivered guest lecture in Advanced Microscopy Courses in the Netherlands. 
  • Supervised students in Experimental Physics in Germany.

  EDUCATION

  • Mar/2010 – Mar/2015: PhD in Physics
    Leibniz Institute for Solid State and Materials Research Dresden / Institute for Solid State Research, Faculty of Physics / Dresden Technical University, Dresden, Germany.
    Supervisor PhD Thesis: Prof. Dr. Bernd Büchner

  • Oct/2007 – Sep/2009: Master in Nanobiophysics
    Biotechnology Center – Dresden Technical University and Leibniz Institute for Solid State and Materials Research Dresden, Dresden, Germany.
    Supervisor Master Thesis: Prof. Dr. Rüdiger Klingeler

  • Aug/2003 – Jul/2007: Bachelor in Medical Physics
    São Paulo State University “Júlio de Mesquita Filho”, Botucatu, Brazil.
    Supervisor Bachelor Thesis: Prof. Dr. Roberto Morato Fernandez

 PREVIOUS POSITIONS

  • Jan/2021 – Aug/2023: Postdoc (Atomic imaging and electron tomography of hydrotreating heterogeneous catalysts using TEM)
    Debye Institute for Nanomaterials Science (Soft Condensed matter group), Utrecht University, The Netherlands | Shell Projects and Technology, Energy Transition Campus Amsterdam, The Netherlands | Advanced Research Center - Chemical Building  Blocks Consortium
  • Jul/2018 – Dec/2020: Postdoc (In situ TEM synthesis of 2D nanomaterials)
    Leibniz Institute for Solid State and Materials Research Dresden, Dresden, Germany
  • Jul/2016 – Jul/2018: Postdoc   (Electron beam interactions with 2D nanomaterials) 
    School for Physics, Optoelectronics and Energy, Soochow University, Soochow, China.
  • Mar/2015 – Jun/2016: Postdoc  (Imaging nanographene oxide flakes in biological cells using TEM)  
    Leibniz Institute for Solid State and Materials Research Dresden, Dresden, Germany