161 citations · 478 across the 9 of their papers we have counts for
9 papers
Characterizing cryogenic amplifiers with a matched temperature-variable noise source
Slawomir Simbierowicz, Visa Vesterinen, Joshua Milem +7
We present a cryogenic microwave noise source with a characteristic impedance of 50 , which can be installed in a coaxial line of a cryostat. The bath temperature of the noise s…
Terahertz detection using mechanical resonators based on 2D materials
Juha Hassel, Mika Oksanen, Teemu Elo +2
We have investigated a THz detection scheme based on mixing of electrical signals in a voltage-dependent capacitance made out of suspended graphene. We have analyzed both coherent…
Electron-phonon coupling in suspended graphene: supercollisions by ripples
Antti Laitinen, Mika Oksanen, Aurélien Fay +4
Using electrical transport experiments and shot noise thermometry, we find strong evidence that "supercollision" scattering processes by flexural modes are the dominant electron-ph…
Buckled Diamond-like Carbon Nanomechanical Resonators
Matti Tomi, Andreas Isacsson, Mika Oksanen +5
We have developed capacitively-transduced nanomechanical resonators using sp-rich diamond-like carbon (DLC) thin films as conducting membranes. The electrically conducting DLC…
Contact doping, Klein tunneling, and asymmetry of shot noise in suspended graphene
Antti Laitinen, G. S. Paraoanu, Mika Oksanen +4
The inherent asymmetry of the electric transport in graphene is attributed to Klein tunneling across barriers defined by -interfaces between positively and negatively…
Electron-optical phonon coupling in suspended bilayer graphene
Antti Laitinen, Manohar Kumar, Mika Oksanen +3
Using electrical transport experiments and shot noise thermometry, we investigate electron-phonon heat transfer rate in a suspended bilayer graphene. Contrary to monolayer graphene…
Graphene optomechanics realized at microwave frequencies
X. Song, M. Oksanen, J. Li +2
Cavity optomechanics has served as a platform for studying the interaction between light and micromechanical motion via radiation pressure. Here we observe such phenomena with a gr…
Single- and multi-mode Fabry-Pérot interference in suspended graphene
Mika Oksanen, Andreas Uppstu, Antti Laitinen +5
Phase coherence of charge carriers leads to electron-wave interference in ballistic mesoscopic conductors. In graphene, such Fabry-Pérot-like interference has been observed, but a…
Stamp transferred suspended graphene mechanical resonators for radio-frequency electrical readout
Xuefeng Song, Mika Oksanen, Mika A. Sillanpää +3
We present a simple micromanipulation technique to transfer suspended graphene flakes onto any substrate and to assemble them with small localized gates into mechanical resonators.…