Facilities
Our group is fully equipped to carry out research on 2D materials, interfaces, and devices. For sample fabrication we our own high-quality transfer system (designed and realized in house) to assemble structures based on 2D materials.
Electrical transport measurements are performed in our home-built probestations. We also have an optoelectronic lab, allowing measuring transport under illumination. All systems are equipped with low-noise electronics, both home-built and commercial.
Deterministic transfer of two-dimensional (2D) materialsÂ
Schematics and transfer process of bridging a thin InSe flake onto the pre-patterned gold electrodes on a 285 nm SiO2/Si substrate, including empty pre-patterned gold electrodes (1), isolated thin InSe flake on the surface of the Gel-Film stamp (2), alignment of the flake with the electrodes (3), the stamp is gently pressed against the target sample (4), the stamp is slowly peeled off (5, 6, 7, white arrows indicate the stamp/air interface) and final device (8).
Q Zhao, T Wang, YK Ryu, R Frisenda, A Castellanos-Gomez
Journal of Physics: Materials 3, 016001 (2020)
Gloveless anaerobic chamber
Optical image of the gloveless chamber with the stamping setup mounted inside with a user mechanically exfoliating an air-sensitive van der Waals crystal.
P Gant, F Carrascoso, Q Zhao, YK Ryu, M Seitz, F Prins, R Frisenda, A Castellanos-Gomez
2D Materials 7, 025034 (2020)