64 citations · 194 across the 13 of their papers we have counts for
13 papers
Direct Visualization of Temperature-Induced Phase Separation of Completely Miscible Au-Pd Alloy by In-Situ TEM
Abhijit Roy, Simon Hettler, Raul Arenal
In-situ transmission electron microscopy (TEM) studies reveal key insights into the structural and chemical evolution of nanoparticles (NPs) under external stimuli like heating and…
Toward thermoelectric characterization of (nano)materials by in situ transmission electron microscopy
Simon Hettler, Mohammad Furqan, Andres Sotelo +1
We explore the possibility to perform an in-situ transmission electron microscopy (TEM) thermoelectric characterization of materials. A differential heating element on a custom in-…
Room-Temperature Anomalous Hall Effect in Graphene in Interfacial Magnetic Proximity with EuO Grown by Topotactic Reduction
Satakshi Pandey, Simon Hettler, Raul Arenal +6
We show that thin layers of EuO, a ferromagnetic insulator, can be achieved by topotactic reduction under titanium of a Eu2O3 film deposited on top of a graphene template. The redu…
Stable CoO Nanoscrolls With Outstanding Electrical Properties
Simon Hettler, Kankona Singha Roy, Raul Arenal +1
Layered CoO is of great interest for its promising properties but is meta-stable in its bulk form. CoO was synthesized by converting the quasi-one-dimensional crystal struc…
Support-based transfer and contacting of individual nanomaterials for in-situ nanoscale investigations
Simon Hettler, Mohammad Furqan, Raul Arenal
Although in-situ transmission electron microscopy (TEM) of nanomaterials has been gaining importance in recent years, difficulties in sample preparation have limited the number of…
Onion-like Fe3O4/MgO/CoFe2O4 magnetic nanoparticles: new ways to control magnetic coupling between soft/hard phases
Jorge M. Nuñez, Simon Hettler, Enio Lima +5
The control of the magnetization inversion dynamics is one of the main challenges driving the design of new nanostructured magnetic materials for magnetoelectronic applications. Na…
Catalysts for the hydrogen evolution reaction in alkaline medium: Configuring a cooperative mechanism at the Ag-AgS-MoS interface
Avraham Bar-Hen, Simon Hettler, Ashwin Ramasubramaniam +3
Designing electrocatalysts for HER in alkaline conditions to overcome the sluggish kinetics associated with the additional water dissociation step is a recognized challenge in prom…
Aberration-corrected transmission electron microscopy with Zernike phase plates
Simon Hettler, Raul Arenal
We explore the possibility of applying physical phase plates (PPs) in combination with aberration-corrected transmission electron microscopy. Phase-contrast transfer characteristic…
A Detailed Investigation of the Onion Structure of Exchanged Coupled Magnetic Fe(3-delta)O4@CoFe2O4@Fe(3-delta)O4 Nanoparticles
Kevin Sartori, Anamaria Musat, Fadi Choueikani +7
Nanoparticles (NPs) which combine several magnetic phases offer wide perspectives for cutting edge applications because of the high modularity of their magnetic properties. Besides…
Shelling with MoS Functional CuS@MoS2 Hybrids as Electrocatalysts for the Oxygen Reduction and Hydrogen Evolution Reactions
Avraham Bar-Hen, Ronen Bar Ziv, Tsion Ohaion-Raz +4
The development of noble-metal free electrocatalysts is of high importance for clean energy conversion applications. MoS has been considered as a promising low cost catalyst fo…
Comparative image simulations for phase-plate transmission electron microscopy
Simon Hettler, Raul Arenal
Numerous physical phase plates (PP) for phase-contrast enhancement in transmission electron microscopy (TEM) have been proposed and studied with the hole-free or Volta PP having a…
In-situ reduction by Joule heating and measurement of electrical conductivity of graphene oxide in a transmission electron microscope
Simon Hettler, David Sebastian, Mario Pelaez-Fernandez +3
Graphene oxide (GO) is reduced by Joule heating using in-situ transmission electron microscopy (TEM). The approach allows the simultaneous study of GO conductivity by electrical me…
Thin-film based phase plates for transmission electron microscopy fabricated from metallic glasses
M. Dries, S. Hettler, T. Schulze +6
Thin-film based phase plates are meanwhile a widespread tool to enhance the contrast of weak-phase objects in transmission electron microscopy (TEM). The thin film usually consists…