15 research outputs found
Time-resolved two-photon photoemission spectroscopy of HOPG and Ag nanoparticles on HOPG
No full textErtel K, Kohl U, Lehmann J, et al. Time-resolved two-photon photoemission spectroscopy of HOPG and Ag nanoparticles on HOPG. Appl. Phys. B. 1999;68(3):439-445.Time-resolved two-color two-photon photoemission experiments are used to investigate the electronic dynamics in highly oriented pyrolytic graphite (HOPG) and in Ag nanoparticles grown on HOPG. The multiphoton photoemission using 267 nm and 400 nm excitation is presented and discussed. For the first time the known unoccupied state on graphite 3.6 eV above the Fermi level can be identified as an image potential state. A lower limit of 60 fs is given for the lifetime of this state. The two-color experiments reveal that the carrier relaxation deduced from time-resolved experiments is influenced by feeding of the intermediate states. First results of the strongly enhanced multiphoton photoemission from Ag nanoparticles on HOPG at 400 nm wavelength are presented. This observation is explained by the excitation of the surface plasmon and its subsequent decay
Psychopathological symptoms of depression in Parkinson's disease compared to major depression
No full textTime-resolved two-photon photoemission spectroscopy of HOPG and Ag nanoparticles on HOPG
No full textLocal correlation of photoemission electron microscopy and STM at a defined cluster substrate system
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Determination of local optical response functions of nanostructures with increasing complexity by using single and coupled Lorentzian oscillator models
No full textPhotoemission Enhancement Induced by Near-Fields via Local Surface Plasmon Resonance of Silver Nanoparticles on a Hydrogen-Terminated Si(111) Surface
No full textExtension of discrete-dipole approximation model to compute nonlinear absorption in gold nanostructures
No full text10.1021/jp202070zJournal of Physical Chemistry C1154220359-2036
Canine Tyrosine Hydroxylase (TH) Gene and Dopamine β -Hydroxylase (DBH) Gene: Their Sequences, Genetic Polymorphisms, and Diversities among Five Different Dog Breeds
No full textFemtosecond Nanoplasmonic Dephasing of Individual Silver Nanoparticles and Small Clusters
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