منابع مشابه
Transforming C60 molecules into graphene quantum dots.
The fragmentation of fullerenes using ions, surface collisions or thermal effects is a complex process that typically leads to the formation of small carbon clusters of variable size. Here, we show that geometrically well-defined graphene quantum dots can be synthesized on a ruthenium surface using C(60) molecules as a precursor. Scanning tunnelling microscopy imaging, supported by density func...
متن کاملCoupling of Surface and Volume Dipole Oscillations in C60 Molecules
We first give a short review of the “local-current approximation” (LCA), derived from a general variation principle, which serves as a semiclassical description of strongly collective excitations in finite fermion systems starting from their quantum-mechanical meanfield ground state. We illustrate it for the example of coupled translational and compressional dipole excitations in metal clusters...
متن کاملOptical properties of the vibrations in charged C60 molecules.
The transition strengths for the four infrared-active vibrations of charged C60 molecules are evaluated in self-consistent density functional theory using the local density approximation. The oscillator strengths for the second and fourth modes are strongly enhanced relative to the neutral C60 molecule, in good agreement with the experimental observation of “giant resonances” for those two mode...
متن کاملDynamics of C60 Molecules in Biological Membranes: Computer Simulation Studies
We have performed molecular dynamics simulations of atomistic models of C60 molecules and DMPC bilayer membranes to study the static and dynamic effects of carbon nanoparticles on biological membranes. All four C60-membrane systems were investigated representing dilute and concentrated solutions of C60 residing either inside or outside the membrane. The concentrated C60 molecules in water phase...
متن کاملInternal energy of molecules ejected due to energetic C60 bombardment.
The early stages of C(60) bombardment of octane and octatetraene crystals are modeled using molecular dynamics simulations with incident energies of 5-20 keV. Using the AIREBO potential, which allows for chemical reactions in hydrocarbon molecules, we are able to investigate how the projectile energy is partitioned into changes in potential and kinetic energy as well as how much energy flows in...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 1996
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn/19962706227