322 citations · 595 across the 12 of their papers we have counts for
10 papers
Transport spectroscopy of ultraclean tunable band gaps in bilayer graphene
E. Icking, L. Banszerus, F. Wörtche +11
The importance of controlling both the charge carrier density and the band gap of a semiconductor cannot be overstated, as it opens the doors to a wide range of applications, inclu…
Engineering tunable strain fields in suspended graphene by microelectromechanical systems
Jens Sonntag, Matthias Goldsche, Tymofiy Khodkov +5
Here, we present a micro-electromechanical system (MEMS) for the investigation of the electromechanical coupling in graphene and potentially related 2D materials. Key innovations o…
Tunable coupling of two mechanical resonators by a graphene membrane
G. J. Verbiest, M. Goldsche, J. Sonntag +4
Coupled nanomechanical resonators are interesting for both fundamental studies and practical applications as they offer rich and tunable oscillation dynamics. At present, the mecha…
Integrated impedance bridge for absolute capacitance measurements at cryogenic temperatures and finite magnetic fields
G. J. Verbiest, H. Janssen, D. Xu +10
We developed an impedance bridge that operates at cryogenic temperatures (down to 60 mK) and in perpendicular magnetic fields up to at least 12 T. This is achieved by mounting a Ga…
Impact of thermal annealing on graphene devices encapsulated in hexagonal boron nitride
S. Engels, B. Terrés, F. Klein +6
We present a thermal annealing study on single-layer and bilayer (BLG) graphene encapsulated in hexagonal boron nitride. The samples are characterized by electron transport and Ram…
Fabrication of comb-drive actuators for straining nanostructured suspended graphene
M. Goldsche, G. J. Verbiest, T. Khodkov +4
We report on the fabrication and characterization of an optimized comb-drive actuator design for strain-dependent transport measurements on suspended graphene. We fabricate devices…
Detecting Ultrasound Vibrations by Graphene Resonators
G. J. Verbiest, J. N. Kirchhof, J. Sonntag +3
Ultrasound detection is one of the most important nondestructive subsurface characterization tools of materials, whose goal is to laterally resolve the subsurface structure with na…
Tailoring mechanically-tunable strain fields in graphene
M. Goldsche, J. Sonntag, T. Khodkov +7
There are a number of theoretical proposals based on strain engineering of graphene and other two-dimensional materials, however purely mechanical control of strain fields in these…
Tunable mechanical coupling between driven microelectromechanical resonators
G. J. Verbiest, D. Xu, M. Goldsche +5
We present a microelectromechanical system, in which a silicon beam is attached to a comb-drive actuator, that is used to tune the tension in the silicon beam, and thus its resonan…
Ballistic transport exceeding 28 μm in CVD grown graphene
Luca Banszerus, Michael Schmitz, Stephan Engels +5
We report on ballistic transport over more than 28 μm in graphene grown by chemical vapor deposition (CVD) that is fully encapsulated in hexagonal boron nitride. The structures are…