@article{HelsperBartzFissanetal.1985,
  author    = {Helsper, Christoph and Bartz, H. and Fißan, H. J. and Kousaka, Y. (u.a.)},
  title     = {Response Characteristics for Four Condensation Nucleus Counters to Particles in the 3 to 50 nm Diameter Range / Bartz, H. ; Fißan, H. J. ; Helsper, C.; Kousaka, Y. ; Okuyama, K. ; Keady, R. Fruin, S. ; McMurry, P. H.; Pui, D. Y. H. ; Stolzenburg, M. R.},
  series = {Journal of Aerosol Science. 16 (1985), H. 5},
  journal   = {Journal of Aerosol Science. 16 (1985), H. 5},
  isbn      = {0021-8502},
  pages     = {443 -- 456},
  year      = {1985},
  language  = {en}
}
@article{HelsperFissan1981,
  author    = {Helsper, Christoph and Fißan, H. J.},
  title     = {Response Characteristic of a Polytec HC-15 Optical Particle Counter},
  series = {Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Association for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Associa-tion for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Schmallenberg, 22.10.80 - 24.10.80},
  journal   = {Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Association for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Associa-tion for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Schmallenberg, 22.10.80 - 24.10.80},
  publisher = {Pergamon Pr.},
  address   = {Oxford},
  pages     = {287 -- 292},
  year      = {1981},
  language  = {en}
}
@article{FoersterWensorraIndlekoferetal.2005,
  author    = {F{\"o}rster, Arnold and Wensorra, J. and Indlekofer, K. M. and L{\"u}th, H.},
  title     = {Resonant tunneling in nanocolumns improved by quantum collimation. Wensorra, J.; Indlekofer, K. M.; F{\"o}rster, A.; L{\"u}th, H.},
  series = {Nano Letters. 5 (2005)},
  journal   = {Nano Letters. 5 (2005)},
  isbn      = {0587-4246},
  pages     = {2470 -- 2475},
  year      = {2005},
  language  = {en}
}
@article{FoersterVitusevichBelyaevetal.1999,
  author    = {F{\"o}rster, Arnold and Vitusevich, S. A. and Belyaev, A. E. and Indlekofer, K. M.},
  title     = {Resonant tunneling effect in delta p-n GaAs junction. Vitusevich, S. A.; F{\"o}rster, A.; Belyaev, A. E.; Indlekofer, K. M.; L{\"u}th, H.; Konakova, R. V.},
  series = {Microelectronic Engineering. 46 (1999), H. 1-4},
  journal   = {Microelectronic Engineering. 46 (1999), H. 1-4},
  isbn      = {0167-9317},
  pages     = {169 -- 172},
  year      = {1999},
  language  = {en}
}
@article{FoersterVitusevichBelyaevetal.2002,
  author    = {F{\"o}rster, Arnold and Vitusevich, S. A. and Belyaev, A. E. and Sheka, D. I.},
  title     = {Resonant tunneling effect in a periodically modulated electrical field. Vitusevich, S.A.; Forster, A.; Belyaev, A.E.; Sheka, D.I.; Luth, H.; Klein, N.; Danylyuk, S.V.; Konakova, R.},
  series = {Proceedings of the Tenth International Conference on Modulated Semiconductor Structures : held at the Johannes Kepler University, Linz, Austria, July 23 - 27, 2001 / MSS 10. Guest ed.: G{\"u}nther Bauer ...},
  journal   = {Proceedings of the Tenth International Conference on Modulated Semiconductor Structures : held at the Johannes Kepler University, Linz, Austria, July 23 - 27, 2001 / MSS 10. Guest ed.: G{\"u}nther Bauer ...},
  publisher = {Elsevier},
  address   = {Amsterdam [u.a.]},
  pages     = {811 -- 813},
  year      = {2002},
  language  = {en}
}
@article{Foerster2000,
  author    = {F{\"o}rster, Arnold},
  title     = {Resonant tunneling diodes operating as modern quantum transport devices},
  series = {Proceedings of the Tenth International Workshop on the Physics of Semiconductor Devices : (December 14 - 18, 1999) / ed.: Vikram Kumar ... - Vol. 2},
  journal   = {Proceedings of the Tenth International Workshop on the Physics of Semiconductor Devices : (December 14 - 18, 1999) / ed.: Vikram Kumar ... - Vol. 2},
  publisher = {Allied Publ.},
  address   = {New Delhi [u.a.]},
  isbn      = {81-7023-998-2},
  pages     = {966 -- 966},
  year      = {2000},
  language  = {en}
}
@article{Foerster1994,
  author    = {F{\"o}rster, Arnold},
  title     = {Resonant tunneling diodes : the effect of structural properties on their performance},
  series = {Festk{\"o}rperprobleme = Advances in solid state physics. 33 (1994)},
  journal   = {Festk{\"o}rperprobleme = Advances in solid state physics. 33 (1994)},
  isbn      = {0065-3357},
  pages     = {37 -- 62},
  year      = {1994},
  language  = {en}
}
@article{VitusevichFoersterLuethetal.2001,
  author    = {Vitusevich, S. A. and F{\"o}rster, Arnold and L{\"u}th, H. and Belyaev, A. E. and Danylyuk, S. V. and Konakova, R. V. and Sheka, D. I.},
  title     = {Resonant spectroscopy of electric-field-induced superlattices},
  series = {Journal of Applied Physics. 90 (2001), H. 6},
  journal   = {Journal of Applied Physics. 90 (2001), H. 6},
  isbn      = {1089-7550},
  doi       = {10.1063/1.1392956},
  pages     = {2857 -- 2861},
  year      = {2001},
  language  = {en}
}
@article{SchaeferUebbingStolzetal.1995,
  author    = {Sch{\"a}fer, Horst and Uebbing, H. and Stolz, H. and von der Osten, W. (u.a.)},
  title     = {Resonance Brillouin Scattering from Quantized Exciton-Polaritons in Ultrathin Epitaxial Layers of ZnSe},
  series = {Il nuovo Cimento D. 17 (1995)},
  journal   = {Il nuovo Cimento D. 17 (1995)},
  isbn      = {0392-6737},
  pages     = {1753 -- 1757},
  year      = {1995},
  language  = {en}
}
@article{PourshahidiEngelmannOffenhaeusseretal.2022,
  author    = {Pourshahidi, Ali Mohammad and Engelmann, Ulrich M. and Offenh{\"a}usser, Andreas and Krause, Hans-Joachim},
  title     = {Resolving ambiguities in core size determination of magnetic nanoparticles from magnetic frequency mixing data},
  series = {Journal of Magnetism and Magnetic Materials},
  volume    = {563},
  journal   = {Journal of Magnetism and Magnetic Materials},
  number    = {In progress, Art. No. 169969},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0304-8853},
  doi       = {10.1016/j.jmmm.2022.169969},
  year      = {2022},
  abstract  = {Frequency mixing magnetic detection (FMMD) has been widely utilized as a measurement technique in magnetic immunoassays. It can also be used for the characterization and distinction (also known as "colourization") of different types of magnetic nanoparticles (MNPs) based on their core sizes. In a previous work, it was shown that the large particles contribute most of the FMMD signal. This leads to ambiguities in core size determination from fitting since the contribution of the small-sized particles is almost undetectable among the strong responses from the large ones. In this work, we report on how this ambiguity can be overcome by modelling the signal intensity using the Langevin model in thermodynamic equilibrium including a lognormal core size distribution fL(dc,d0,σ) fitted to experimentally measured FMMD data of immobilized MNPs. For each given median diameter d0, an ambiguous amount of best-fitting pairs of parameters distribution width σ and number of particles Np with R2 > 0.99 are extracted. By determining the samples' total iron mass, mFe, with inductively coupled plasma optical emission spectrometry (ICP-OES), we are then able to identify the one specific best-fitting pair (σ, Np) one uniquely. With this additional externally measured parameter, we resolved the ambiguity in core size distribution and determined the parameters (d0, σ, Np) directly from FMMD measurements, allowing precise MNPs sample characterization.},
  language  = {en}
}