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The effect of the substrate on the Raman and photoluminescence emission of single layer MoS2
Michele Buscema, Gary A. Steele, Herre S. J. van der Zant +1
We quantitatively study the Raman and photoluminescence (PL) emission from single layer molybdenum disulfide (MoS2) on dielectric (SiO2, hexagonal boron nitride, mica and the polym…
Deterministic transfer of two-dimensional materials by all-dry viscoelastic stamping
Andres Castellanos-Gomez, Michele Buscema, Rianda Molenaar +4
Deterministic transfer of two-dimensional crystals constitutes a crucial step towards the fabrication of heterostructures based on artificial stacking of two-dimensional materials.…
A simple method to characterize the electrical and mechanical properties of micro-fibers
Andres Castellanos-Gomez
A procedure to characterize the electrical and mechanical properties of micro-fibers is presented here. As the required equipment can be found in many teaching laboratories, it can…
Single-layer MoS2 mechanical resonators
Andres Castellanos-Gomez, Ronald van Leeuwen, Michele Buscema +3
Here, we demonstrate the fabrication of single-layer MoS2 mechanical resonators. The fabricated resonators have fundamental resonance frequencies in the order of 10 MHz to 30 MHz (…
Folded MoS2 layers with reduced interlayer coupling
Andres Castellanos-Gomez, Herre S. J. van der Zant, Gary A. Steele
We study molybdenum disulfide (MoS2) structures generated by folding single- and bilayer MoS2 flakes. We find that this modified layer stacking leads to a decrease in the interlaye…
Local strain engineering in atomically thin MoS2
Andres Castellanos-Gomez, Rafael Roldán, Emmanuele Cappelluti +4
Tuning the electronic properties of a material by subjecting it to strain constitutes an important strategy to enhance the performance of semiconducting electronic devices. Using l…
Periodic spatial variation of the electron-phonon interaction in epitaxial graphene on Ru(0001
Andres Castellanos-Gomez, Gabino Rubio-Bollinger, Sara Barja +4
We have performed low temperature scanning tunnelling spectroscopy (STS) measurements on graphene epitaxially grown on Ru(0001). An inelastic feature, related to the excitation of…
Large and tunable photo-thermoelectric effect in single-layer MoS2
Michele Buscema, Maria Barkelid, Val Zwiller +3
We study the photoresponse of single-layer MoS2 field-effect transistors by scanning photocurrent microscopy. We find that, unlike in many other semiconductors, the photocurrent ge…
Fast and reliable identification of atomically thin layers of TaSe2 crystals
Andres Castellanos-Gomez, Efrén Navarro-Moratalla, Guillermo Mokry +7
Deposition of clean and defect-free atomically thin two-dimensional crystalline flakes on surfaces by mechanical exfoliation of layered bulk materials has proven to be a powerful t…