Combining High-Resolution TEM on Graphene With In-Situ Hall Measurements 105 Combining High-Resolution TEM on Graphene With In-Situ Hall Measurements
نویسنده
چکیده
We describe an approach allowing high-resolution transmission electron microscopy (HRTEM) on specimens like graphene and the investigation on their electronic transport properties at the same time. The experimental set-up presented here is based on the modification of a commercial TEM specimen holder and on a specially designed sample carrier. A customized Hall sensor confirms that the local magnetic field provided by the microscope’s objective lens is sufficiently high and homogenous for in-situ Hall effect measurements. Finally, we discuss first experimental results on defective graphene specimens. Indeed, our data reveals great potential in terms of correlating the information which we gain from HRTEM images with the corresponding transport properties, but also indicates further tasks and challenges.
منابع مشابه
Chemistry and Structure of Graphene Oxide via Direct Imaging.
Graphene oxide (GO) and reduced GO (rGO) are the only variants of graphene that can be manufactured at the kilogram scale, and yet the widely accepted model for their structure has largely relied on indirect evidence. Notably, existing high-resolution transmission electron microscopy (HRTEM) studies of graphene oxide report long-range order of sp(2) lattice with isolated defect clusters. Here, ...
متن کاملGraphene-based sample supports for in situ high-resolution TEM electrical investigations
Specially designed transmission electron microscopy (TEM) sample carriers have been developed to enable atomically resolved studies of the heat-induced evolution of adsorbates on graphene and their influence on electrical conductivity. Here, we present a strategy for graphene-based carrier realization, evaluating its design with respect to fabrication effort and applications potential. We demon...
متن کاملNanoscale bending of multilayered boron nitride and graphene ribbons: experiment and objective molecular dynamics calculations.
By combining experiments performed on nanoribbons in situ within a high-resolution TEM with objective molecular dynamics simulations, we reveal common mechanisms in the bending response of few-layer-thick hexagonal boron nitride and graphene nanoribbons. Both materials are observed forming localized kinks in the fully reversible bending experiments. Microscopic simulations and theoretical analy...
متن کاملAn In-Situ TEM Study on the Formation of Gold Carbide
In this study, a freestanding graphene membrane sheet serves as a quasi transparent substrate for aberration-corrected high-resolution transmission electron microscopy, as an insitu heater, and as carbon supplier. The sheet has been previously decorated with gold nanoislands. During electron irradiation at 80 kV and at temperatures of approximately 1000K, the accumulation of gold atoms has been...
متن کاملScanning hall probe microscopy technique for investigation of magnetic properties
Scanning Hall Probe Microscopy (SHPM) is a scanning probe microscopy technique developed to observe and image magnetic fields locally. This method is based on application of the Hall Effect, supplied by a micro hall probe attached to the end of cantilever as a sensor. SHPM provides direct quantitative information on the magnetic state of a material and can also image magnetic induction under a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013