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Light-matter interaction in a microcavity-controlled graphene transistor
Michael Engel, Mathias Steiner, Antonio Lombardo +4
Graphene has extraordinary electronic and optical properties and holds great promise for applications in photonics and optoelectronics. Demonstrations including high-speed photodet…
Low-temperature structure of xi'-Al-Pd-Mn optimized by ab-initio methods
Benjamin Frigan, Alejandro Santana, Michael Engel +3
We have studied and resolved occupancy correlations in the existing average structure model of the complex metallic alloy xi'-Al-Pd-Mn [Boudard et al., Phil. Mag. A, 74, 939 (1996)…
Crystalline Assemblies and Densest Packings of a Family of Truncated Tetrahedra and the Role of Directional Entropic Forces
Pablo F. Damasceno, Michael Engel, Sharon C. Glotzer
Polyhedra and their arrangements have intrigued humankind since the ancient Greeks and are today important motifs in condensed matter, with application to many classes of liquids a…
Electroluminescence from chirality-sorted (9,7)-semiconducting carbon nanotube devices
Martin H. P. Pfeiffer, Ninette Stürzl, Christoph W. Marquardt +6
We have measured the electroluminescence and photoluminescence of (9,7) semiconducting carbon nanotube devices and demonstrate that the electroluminescence wavelength is determined…
Controlled fabrication of single-walled carbon nanotube electrodes by electron-beam-induced oxidation
Cornelius Thiele, Michael Engel, Frank Hennrich +5
The fabrication of metallic single-walled carbon nanotube electrodes separated by gaps of typically 20nm width by electron-beam-induced oxidation is studied within an active device…
Degenerate Quasicrystal of Hard Triangular Bipyramids
Amir Haji-Akbari, Michael Engel, Sharon C Glotzer
We report a degenerate quasicrystal in Monte Carlo simulations of hard triangular bipyramids each composed of two regular tetrahedra sharing a single face. The dodecagonal quasicry…