5 papers
Semi-permeability of graphene nanodrums in sucrose solution
Robin J. Dolleman, Allard J. Katan, Herre S. J. van der Zant +1
Semi-permeable membranes are important elements in water purification and energy generation applications, for which the atomic thickness and strength of graphene can enhance effici…
Analysis of a single-mode waveguide at sub-terahertz frequencies as a communication channel
Marc Westig, Holger Thierschmann, Allard Katan +2
We study experimentally the transmission of an electro-magnetic waveguide in the frequency range from 160 to 300 GHz. Photo-mixing is used to excite and detect the fundamental TE10…
Local electrodynamics of a disordered conductor model system measured with a microwave impedance microscope
Holger Thierschmann, Hale Cetinay, Matvey Finkel +4
We study the electrodynamic impedance of percolating conductors with a pre-defined network topology using a scanning microwave impedance microscope (sMIM) at GHz frequencies. For a…
Shielded cantilever with on-chip interferometer circuit for THz scanning probe impedance microscopy
Matvey Finkel, Holger Thierschmann, Allard J. Katan +3
We have realized a microstrip based THz near field cantilever which enables quantitative measurements of the impedance of the probe tip at THz frequencies (0.3 THz). A key feature…
Spatial conductivity mapping of unprotected and capped black phosphorus using microwave microscopy
Pieter J. de Visser, Rebekah Chua, Joshua O. Island +5
Thin layers of black phosphorus present an ideal combination of a 2D material with a tunable direct bandgap and high carrier mobility. However the material suffers from degradation…