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Na ruim 2 weken kan ik nog steeds niet bij élk nummerbord 'in real life' denken

Optimized Synthesis and Device Integration of Long 17-Atom-Wide Armchair Graphene Nanoribbons
Jeong Ha Hwang, Nicol\`o Bassi, Mayada Fadel, Oliver Braun, Tim Dumslaff, Carlo Pignedoli, Michael Stiefel, Roman Furrer, Hironobu Hayashi, Hiroko Yamada, Akimitsu Narita, Klaus M\"ullen, Michel Calame, Mickael L. Perrin, Roman Fasel, Pascal Ruffieux, Vincent Meunier, Gabriela Borin Barin

Optimized Synthesis and Device Integration of Long 17-Atom-Wide Armchair Graphene Nanoribbons
Seventeen-carbon-atom-wide armchair graphene nanoribbons (17-AGNRs) are promising candidates for high-performance electronic devices due to their narrow electronic bandgap. Atomic precision in edge structure and width control is achieved through a bottom-up on-surface synthesis (OSS) approach from tailored molecular precursors in ultra-high vacuum (UHV). This synthetic protocol must be optimized to meet the structural requirements for device integration, with ribbon length being the most critic…

Tunable Interlayer Excitons in Bilayer Graphene Nanoribbons
Alexandre R. Rocha, Rodrigo G. Amorim, Wanderl\~a L. Scopel, Cesar E. P. Villegas
https://arxiv.org/abs/2507.10887

Tunable Interlayer Excitons in Bilayer Graphene Nanoribbons
Vertically stacked van der Waals structures are promising platforms that enable layer engineering, opening new avenues for the quantum control of elementary excitations, including optically generated bound electron-hole pairs. Here we employ excited-state density functional calculations to demonstrate strong interlayer excitonic coupling in one-dimensional van der Waals nanostructures derived from armchair graphene nanoribbons. The excitonic response exhibits prominent peaks in the near-infrare…

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Nanowar Of Steel - HelloWorld.java
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A Unified Approach to Calculating Sylvester Sums
Neha Gupta, Manoj Upreti
https://arxiv.org/abs/2507.06692 https://arxiv.org/pdf/2507…

A Unified Approach to Calculating Sylvester Sums
In the context of the Frobenius coin problem, given two relatively prime positive integers $a$ and $b$, the set of nonrepresentable numbers consists of positive integers that cannot be expressed as nonnegative integer combination of $a$ and $b$. This work provides a formula for calculating the power sums of all nonrepresentable numbers, also known as the Sylvester sums. Although alternative formulas exist in the literature, our approach is based on an elementary observation. We consider the set…

Have you ever listened to a song with lyrics in Java? No? Then please enjoy helloworld.java by Nanowar of Steel: #rocknroll

Ultrafast All-optical control of Multiple Light Degrees of Freedom through Mode-mixing in a Graphene Nanoribbon Metamaterial
Nikolaos Matthaiakakis, Sotiris Droulias, George Kakarantzas
https://arxiv.org/abs/2507.06809

Ultrafast All-optical control of Multiple Light Degrees of Freedom through Mode-mixing in a Graphene Nanoribbon Metamaterial
The evolution of optical technologies necessitates advanced solutions for selective and dynamic manipulation of light's degrees of freedom, including amplitude, phase, polarization, wavelength, and angular momentum. Metamaterials can offer such control through the interplay between the intrinsic material and geometrical properties of nanostructures or extrinsically through excitation and detection symmetry breaking, leading to customizable performance. However, achieving dynamic control over mu…

Ultrahigh-Q Torsional Nanomechanics through Bayesian Optimization
Atkin D. Hyatt, Aman R. Agrawal, Christian M. Pluchar, Charles A. Condos, Dalziel J. Wilson
https://arxiv.org/abs/2506.02325

Ultrahigh-Q Torsional Nanomechanics through Bayesian Optimization
Recently it was discovered that torsion modes of strained nanoribbons exhibit dissipation dilution, giving a route to enhanced torque sensing and quantum optomechanics experiments. As with all strained nanomechanical resonators, an important limitation is bending loss due to mode curvature at the clamps. Here we use Bayesian optimization to design nanoribbons with optimal dissipation dilution of the fundamental torsion mode. Applied to centimeter-scale Si$_3$N$_4$ nanoribbons, we realize $Q$ fa…

Electric-field control of zero-dimensional topological states in ultranarrow germanene nanoribbons
Lumen Eek, Esra D. van 't Westende, Dennis J. Klaassen, Harold J. W. Zandvliet, Pantelis Bampoulis, Cristiane Morais Smith
https://arxiv.org/abs/2506.16158

Electric-field control of zero-dimensional topological states in ultranarrow germanene nanoribbons
Symmetry-protected zero-dimensional (0D) modes, such as corner and end states with fractionalized charge, promise robust qubits and efficient electronics. Yet, reversible, electric-field manipulation and control of these modes has remained elusive. Here, we show theoretically and experimentally electric-field-driven on/off switching of 0D topological end modes in two- and three-hexagon wide germanene nanoribbons in a vertical tunnel junction set-up. We demonstrate the annihilation and restorati…

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Leonard Edens, Francisco Romero Lara, Trisha Sai, Kalyan Biswas, Manuel Vilas-Varela, Fabian Schulz, Diego Pe\~na, Jose Ignacio Pascual
https://arxiv.org/abs/2505.23468

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Tailor-made graphene nanostructures can exhibit symmetry-protected topological boundary states that host localized spin-$1/2$ moments. However, one frequently observes charge transfer on coinage metal substrates, which results in spinless closed-shell configurations. Using low temperature scanning tunneling spectroscopy, we demonstrate here that pristine topologically nontrivial chiral graphene nanoribbons synthesized directly on the ferromagnet $\textrm{GdAu}_2$ can either maintain a charge-ne…