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46 papers
Simplified feedback control system for Scanning Tunneling Microscopy
Francisco Martín-Vega, Víctor Barrena, Raquel Sánchez-Barquilla +18
A Scanning Tunneling Microscope (STM) is one of the most important scanning probe tools available to study and manipulate matter at the nanoscale. In a STM, a tip is scanned on top…
Fast Yet Quantum-Efficient Few-Layer Vertical MoS2 Photodetectors
David Maeso, Andres Castellanos-Gomez, Nicolas Agraït +1
Semiconducting 2D materials, such as molybdenum disulfide (MoS2) and other members of the transition metal dichalcogenide family, have emerged as promising materials for applicatio…
Strong Modulation of Optical Properties in Rippled 2D GaSe via Strain Engineering
David Maeso, Sahar Pakdel, Hernan Santos +4
Few-layer GaSe is one of the latest additions to the family of 2D semiconducting crystals whose properties under strain are still relatively unexplored. Here, we study rippled nano…
Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite
Patricia Gant, Foad Ghasemi, David Maeso +7
We study mechanically exfoliated nanosheets of franckeite by quantitative optical microscopy. The analysis of transmission mode and epi-illumination mode optical microscopy images…
The Role of Oligomeric Gold-Thiolate Units in Single Molecule Junc-tions of Thiol-Anchored Molecules
Edmund Leary, Linda A. Zotti, Delia Miguel +6
Using the break junction (BJ) technique we show that Au(RS)2 units play a significant role in thiol-terminated molecular junctions formed on gold. We have studied a range of thiol-…
High current density electrical breakdown of TiS3 nanoribbon-based field-effect transistors
Aday J. Molina-Mendoza, Joshua O. Island, Wendel S. Paz +11
The high field transport characteristics of nanostructured transistors based on layered materials are not only important from a device physics perspective but also for possible app…