Low Voltage Transmission Electron Microscopy of Graphene

Scanning transmission low-energy electron microscopy

We discuss an extension to the transmission mode of the cathode-lens-equipped scanning electron microscope, enabling operation down to the lowest energies of electrons. Penetration of electrons through free-standing ultrathin films is examined along the full energy scale, and the contribution of the secondary electrons (SEs), released near the bottom surface of the sample, is shown, enhancing t...

Scanning Transmission Electron Microscopy of Metal- Graphene Interaction

Evolution of graphene nanoribbons under low-voltage electron irradiation.

Though the all-semiconducting nature of ultrathin graphene nanoribbons (GNRs) has been demonstrated in field-effect transistors operated at room temperature with ∼10(5) on-off current ratios, the borderline for the potential of GNRs is still untouched. There remains a great challenge in fabricating even thinner GNRs with precise width, known edge configurations and specified crystallographic or...

Foreword to the special issue low-voltage electron microscopy.

Today, low voltage electron microscopy is a topic of high relevance all over the world; in Japan [1], America [2], and Germany [3] particular research projects are even dedicated to unravel the atomic and electronic structure of radiation sensitive matter with 60 kV electrons and below. It seems that research comes back to its voltage-routes of the early days of electron microscopy, when in 193...

Diagnostic Transmission Electron Microscopy

The high resolution and sensitivity of electron microscopy is still a valuable tool, and for some diseases it is the gold standard in pathological diagnosis. Today the sample turnaround time for processing in the lab can be significantly reduced from days to hours by the microwave technology. In urgent clinical cases, microwaveassisted tissue processing, in combination with digital image acquis...