Forschungsbericht 2006

4-09 Optische und Elektronische Materialien

Materialien der Elektrotechnik und Optik

Forschungsprojekte

• E.4-09.019 Polymerelektronik
• E.4-09.020 Fälschungssichere Münzen durch Laser-Nanoprägen von Hologrammen (SIMULAN)
• E.4-09.021 Nanoröhrchen-Netzwerk in Epoxidharz

Publikationen

Veröffentlichungen

• 4-09.012V
  A. Weyers, H. Kliem, J. Lützner, G. Arlt, "Critical currents in high-Tc ceramics by force induced fluxon movement", J. Appl. Phys. 71, 5089 (1992).
• 4-09.013V
  H. Kliem, "Non-linear dielectric response by protons in amorphous insulators", 1992 CEIDP Ann. Rep., 81 (1992).
• 4-09.014V
  H. Kliem, "Reply to, ""Comment on 'A comment on dielectric theory, "Differential equations and permittivity'"", J. Appl. Phys. 72, 5010 (1992).
• 4-09.015V
  H. Kliem, G. Zienert, "Monte-Carlo Simulation of Dielectric Polarization", 1993 CEIDP Ann. Rep., 110 (1993).
• 4-09.016V
  H. Kliem, "Relaxationen in komplexen Systemen", Habilitationsschrift, TU Hamburg-Harburg (1993).
• 4-09.017V
  T. Henning, H. Kliem, A. Weyers, W. Bauhofer, " Resistive transition of bulk ceramic HTSC by Lorentz force induced fluxon motion, Applied Superconductivity", Ed. H.C. Freyhardt, 775 (1993), DGM Informationsgesellschaft.
• 4-09.018V
  R.v. Baltz, W. Denk, W. Bauhofer, "Theoretical investigation of the longitudinal Hall effect in SrAs3", Phys. Rev. B48, 2098 (1993).
• 4-09.019V
  D. Rüter, W. Bauhofer, "Preparation of porous silicon by spark erosion", J. Luminescence 57, 19 (1993).
• 4-09.020V
  T. Henning, H. Kliem, W. Bauhofer, A. Weyers, "Resistive transition of bulk ceramic HTSC by Lorentz force induced fluxon motion Applied Superconductivity", Ed. H. C. Freyhardt (DGM Informationsgesellschaft, Oberursel, 1993), 775.
• 4-09.021V
  H. Kliem, S. Schatteburg, K. Thiele, W. Bauhofer, D. Bonnenberg, "Interpretation of flux line dynamics in HTSC by force induced motion", Verhandl. der DPG (VI) 28, 1071 (1993).
• 4-09.022V
  R.v. Baltz, W. Denk, P. Klar, W. Bauhofer, "Theoretical aspects of the longitudinal Hall effect", Verhandl. der DPG (VI) 28, 1476 (1993).
• 4-09.023V
  U. Wiesner, J. Pillath, W. Bauhofer, A. Kohl, A. Mesquida Küsters, S. Brittner,K. Heime, "Magnetotransport studies of MOCVD-grown modulation doped InGaAs/InP heterostructures", Verhandl. der DPG (VI) 28, 1482 (1993).
• 4-09.024V
  G. Zienert, H. Kliem, "Monte-Carlo simulation of dipole-dipole interaction and its influence on dielectric properties", 2. Int. Discussion Meeting on Relaxations in Complex Systems 1993, Book of Abstracts.
• 4-09.025V
  U. Wiesner, J. Pillath, W. Bauhofer, A. Kohl, A. Mesquida Küsters, S. Brittner, K. Heime, "In-plane effective masses and quantum scattering times of electrons in narrow modulation-doped InGaAs/InP quantum wells", Appl. Phys. Lett. 64, 2520 (1994).
• 4-09.026V
  M. Homann, H. Kliem, "Relaxational polarization and charge injection in thin films of silicon nitride Microelectronics", J. 25, 559 (1994).
• 4-09.027V
  S. Schatteburg, H. Kliem, W. Bauhofer, "Redistribution of local current densities in high-Tc ceramics in external magnetic fields", J. Appl. Phys. 76, 1116 (1994).
• 4-09.028V
  D. Rüter, T. Kunze, W. Bauhofer, "Leuchtende Siliziumoberflächen durch reaktive Plasmabehandlung", Verhandl. der DPG (VI) 29, 1055 (1994).
• 4-09.029V
  U. Wiesner, S. Müller, J. Pillath, W. Bauhofer, A. Kohl, A. Mesquida-Küsters, S. Brittner, K. Heime, "Effektive Massen, Quantenstreuzeiten und Konzentrationsabhängigkeit der Elektronenbeweglichkeit in schmalen InGaAs/InP Quantentöpfen", Verhandl. der DPG (VI) 29,1121 (1994).
• 4-09.030V
  P.J. Klar, W. Bauhofer, "Der anisotrope Magnetwiderstand im Mischsystem EuxSr1-xAs3", Verhandl. der DPG (VI) 29, 1239 (1994).
• 4-09.031V
  T. Henning, H. Kliem, W. Bauhofer, "Resistiver übergang von HTSL durch Lorentzkraft-induzierte Flußschlauchbewegung", Verhandl. der DPG (VI) 29, 1513 (1994).
• 4-09.032V
  H. Kliem, R. Janke, W. Bauhofer, P. Pfundt, E. Labarta-Greven, "Nichtlineare Magnetisierung von Hochtemperatur-Supraleitern", Verhandl. der DPG (VI) 29, 1514 (1994).
• 4-09.033V
  H. Kliem, M. Homann, "Polarization and electron injection in siliconnitride induced by protons", 1994 CEIDP Ann. Rep., 767 (1994).
• 4-09.034V
  H. Wittich, K. Schulte, M. Kupke, H. Kliem, W. Bauhofer, "The measurement of electrical properties of CFRP for damage detection and strain recording", Proc. European Conf. on Composites Testing and Standardization ECCM - CTS 2, 447(1994).
• 4-09.035V
  H. Kliem, "An Alternative Concept for the Description of Fluxon Motion", 1994 Appl. Supercond. Conf., Technical Profram Book, 186 (1994).
• 4-09.036V
  D. Rüter, T. Kunze, W. Bauhofer, "Blue light emission from silicon surfaces prepared by spark-erosion and related techniques", Appl. Phys. Lett. 64, 3006 (1994).
• 4-09.037V
  P.J. Klar, W. Bauhofer, "Galvanomagnetic properties and band structure of monoclinec SrAs3", Phys. Rev. B50, 510 (1994).
• 4-09.038V
  D. Rüter, S. Rolf, W. Bauhofer, P.J. Klar, D. Wolverson, "Luminescence properties of plasma treated silicon surfaces Thin Solid Films", 255, 305 (1995).
• 4-09.039V
  D. Rüter, S. Rolf, W. Bauhofer, "Temperature dependent photoluminescence and optical absorption of wide-gap amorphous silicon-carbon", alloys phys. stat. sol. (b) 190, 41 (1995).
• 4-09.040V
  S. Rolf, D. Rüter, W. Bauhofer, J. Becker, A. Schröder, G. Zimmerer, "Temperaturabhängige Photolumineszenz von a - Si1-xCx(O,N),"H, Cl Schichten mit sehr geringer Absorption der Eigenlumineszenz", Verhandl. der DPG (VI) 30, 1164 (1995).
• 4-09.041V
  S. Müller, J. Pillath, W. Bauhofer, A. Kohl, K. Heime, "Absolute Bestimmung der Streuung an Grenzflächenrauhigkeiten in schmalen InGaAs/InP Quantentöpfen mit Hilfe der persistenten Photoleitfähigkeit", Verhandl. der DPG (VI) 30, 1237 (1995).
• 4-09.042V
  A. Henkies, J. Pillath, W. Bauhofer, A. Kohl, K. Heime, "Elektronendichteabhängigkeit der Transportparameter in schmalen InGaAs/InP Quantentöpfen", Verhandl. der DPG (VI) 30, 1238 (1995).
• 4-09.043V
  J. Niemann, R. Janke, H. Kliem, W. Bauhofer, "Magnetisierung und Relaxation von Hochtemperatur-Supraleitern", Verhandl. der DPG (VI) 30, 1715 (1995).
• 4-09.044V
  D. Rüter, S. Rolf, W. Bauhofer, "Amorphous silicon-carbon based thin films with efficient UV-excited photoluminescence and low self-absorptivity in the emission spectral range", Appl. Phys. Lett. 67, 149 (1995).
• 4-09.045V
  S. Müller, J. Pillath, W. Bauhofer, A. Kohl, K. Heime, "Persistent photoconductivity and electron density dependent magnetotransport measurements in narrow InGaAs/InP quantum wells", Appl. Phys. Lett. 67, 1603 (1995).
• 4-09.046V
  J. Seekamp, W. Bauhofer, J. Non-Cryst. Sol., 227-230, (1997), 474.
• 4-09.047V
  J. Seekamp, W. Bauhofer, CAS'98 Proc., 2, (1998), 427
• 4-09.048V
  V.N. Bessolov, M.V. Lebedev, A. Ivankov, W. Bauhofer, D.R.T. Zahn, "Electronic properties of GaAs(100) surface passivated in alcoholic sulfide solutions", Appl. Surf. Sci., Vol. 133, 17, (1998).
• 4-09.049V
  R. Blum, M. Sprave, J. Sablotny, M. Eich, "High electric field poling of nonlinear optical polymers", J. Opt. Soc. Am. B, 15(1) 318-328 (1998).
• 4-09.050V
  M. Sprave, R. Blum, M. Eich, "High Electric Field Conduction Mechanisms in Electrode Poling of Electrooptic Polymers", Appl. Phys. Lett. 69(20), 2962 (1996).
• 4-09.051V
  R. Blum, M. Adameck, T. Elken, M. Eich, "Analyzing the x(2)-distribution in poled polymers", Nonlinear Optics 22, 19 (1999).
• 4-09.052V
  M. Adameck, R. Blum, M. Eich, "Scanning second harmonic microscopy techniques with monomode and near field optical fibers", Appl. Phys. Lett. 73(20), 2884 (1998).
• 4-09.053V
  J. Vydra, M. Eich, "Mapping of the lateral polar orientational order distributation in second-oder nonlinear thin films by scanning second-harmonic microscopy", Appl. Phys. Lett. 72(3), 275 (1998).
• 4-09.054V
  T. Prasse, L. Flandin, K. Schulte, W. Bauhofer, "In situ observation of electric field induced agglomeration of carbon black in epoxy resin", Appl. Phys. Lett. Vol. 72, S. 2903 ff (1998).
• 4-09.055V
  H. Wittich, K. Schulte, M. Kupke, H. Kliem, W. Bauhofer, "The Measurement of Electrical Properties of CFRP for Damage Detection and Strain Recording", Proc. 2. ECCM-CTS, Hamburg (1994) 447-457.
• 4-09.056V
  D. Rüter, W. Bauhofer, "Highly luminescent Eu3+ or Tb3+ doped and ZnO sensitized optical fibers from silicon compartible sealing glasses", Appl. Phys. Lett. 69, 892 (1996).
• 4-09.057V
  A. Brensing, M. Mazloom-Tehrani, W. Bauhofer, "Determination of significant transport parameters of two-dimensional electron gas systems by microwave methods", Appl. Phys. Lett., 70, 3128-3130 (1997).
• 4-09.058V
  R. Greiser, A. Brensing, J. Pillath, W. Bauhofer in High Magnetic Fields in the Physics of Semiconductors II, G. Landwehr, W.Ossau, World Scientific, Singapore, New Jersey, London, Hong Kong (1997).
• 4-09.059V
  A. Brensing, W. Bauhofer, K. Köhler, "Transport parameters of 2D systems derived from microwave transmission experiments", The Physics of Semiconductors, Ed.: Gershoni, D., World Scientific, Singapore, ISBN 981-02-4030-9 (1999).
• 4-09.060V
  J. Sandler, M.S.P. Shaffer, T. Prasse, W. Bauhofer, K. Schulte, A.H. Windle, "Development of a dispersion process for carbon nanotubes in a epoxy matrix and the resulting electrical properities", Polymer 40, 5967 (1999)
• 4-09.061V
  L. Flandlin, T. Prasse, R. Schüler, W. Bauhofer, K. Schulte, J.-Y. Cavaille, "Anomalous percolation transition in carbon-black-epoxy composite materials", Phys.Rev. B 59, 14349 (1999)
• 4-09.062V
  J. Seekamp, J. Niemann, W. Bauhofer, "PECVD a-SiC:H thin films from liquid organosilanes dependence of photoluminescence on starting material", J. of Non-Crystalline Solids 266, 704 (2000).
• 4-09.063V
  R. Blum, A. Ivankov, S. Schwantes, M. Eich, "Analyzing the Polarization Distribution in Poled Polymer Films by Scanning Kelvin Microscopy", Appl. Phys. Lett. 76, 604 (2000).
• 4-09.064V
  L. Flandin, T. Prasse, W. Bauhofer, K. Schulte, J.-Y. Cavaille, "Carbon black filled thermoset with controlled microstructure for electrical applications", Materiaux & Techniques 7-8 (2000)
• 4-09.065V
  M.-K. Schwarz, T. Prasse, K. Schulte, W. Bauhofer, "Electrical properties of carbon black filled epoxy resin with different hardeners and resultant electric field induced agglomeration", Third international conference on carbon black, Mulhouse (F), 147 (2000)
• 4-09.066V
  T. Prasse, F. Michel, G. Mook, K. Schulte, W. Bauhofer, "Comparative Investigation of Electric Resistance and Acoustic Emission during Cyclic Loding of CFRP Laminates", Comp. Sci. Technol. (2001)
• 4-09.067V
  M. Eich, M. G. Kuzyk, C. M. Lawson, R. A. Norwood , "Linear, nonlinear, and power-limiting organics", San Diego, USA, 31 July - 3 August 2000, Proceedings of SPIE (2000)
• 4-09.068V
  R. Blum, K. Pfeifer, M. Eich, "Depth profiling of the X(2)-distribution in poled nonlinear optical polymer films", Proc. of SPIE 4106, 146 (2000)
• 4-09.069V
  T. Prasse, F. Michel, G. Mook, K. Schulte, W. Bauhofer, "Nondestructive testing of carbon fibre reinforced laminates by monitoring of electrical resistance", Fourth international workshop on new approaches to high-tech: Nondestructive testing and computer simulations in science engineering (St. Petersburg), Proc. of SPAS 4, 25 (2000).
• 4-09.070V
  A. Ivankov, R. Blum, T. Prasse, J. Sandler, W. Bauhofer, "Application of scanning Kelvin microscopy for nondestructive material characterization", Fourth international workshop on new approaches to high-tech: Nondestructive testing and computer simulations in science engineering (St. Petersburg), Proc. of SPAS 4, 35 (2000).
• 4-09.071V
  C. Liguda, G. Böttger, A. Kuligk, R. Blum, M. Eich, "Polymer photonic crystal slab waveguides", Appl. Phys. Lett. 78, 17 (2001).
• 4-09.072V
  T. Prasse, A. Ivankov, J. Sandler, K. Schulte und W. Bauhofer, "Imaging of conductive filler networks in heterogeneous materials by scanning Kelvin microscopy", J. Appl. Polym. Sci. 82, 3381 (2001).
• 4-09.073V
  T. Prasse, M-K. Schwarz, K. Schulte und W. Bauhofer, "The interaction of epoxy resin and an additional electrolyte with non-oxidised carbon black in colloidal dispersions", Colloids and surfaces A 189, 183 (2001).
• 4-09.074V
  R. Schliewe, A. Brensing und W. Bauhofer, "Contactless heating of two-dimensional electron gas systems by strip-line guided microwaves", Semicond. Sci. Technol. 16, 662 (2001).
• 4-09.075V
  M. Eich, C. Liguda, G. Böttger, H. Roth, J. Kuhnert, W. Morgenroth, E. Elsner, H.G. Meyer, "Proceedings of the 6th International Conference on Organic Nonlinear Optics", Tucson (2001).
• 4-09.076V
  M. Eich, C. Liguda, G. Böttger, H. Roth, J. Kuhnert, W. Morgenroth, E. Elsner, H.G. Meyer, "Proceedings of the EURESCO Conference on Electromagnetic Crystal Structures", St. Andrews (2001).
• 4-09.077V
  M. Eich, C. Liguda, G. Böttger, H. Roth, J. Kuhnert, W. Morgenroth, H. Elsner, H.G. Meyer, "Proceedings of the European Conference on Intergrated Optics (ECIO'01)", Paderborn (2001).
• 4-09.078V
  M. Eich, C. Liguda, G. Böttger, "Proceedings of the SPIE's International Symposium on Optical Science, Engineering and Instrumentation", San Diego (2001).
• 4-09.079V
  A. Ivankov, J. Seekamp, W. Bauhofer, "Optical properties of zinc borate glasses", Materials Letters 49, 209 (2001).
• 4-09.080V
  A. Ivankov, W. Bauhofer, "Selective UV Detector as a Combination of Waveguide Structures of Eu3+-Doped Zinc Borate Glasses with Si Photodiode", Phys. stat. sol. 185, 145 (2001).
• 4-09.081V
  T. Prasse und W. Bauhofer, "Elektrisch strukturierte inhomogene Leitfähigkeit in rußgefüllten Epoxidharzen", Kunststoffe 2, 74 (2002).
• 4-09.082V
  M.-K. Schwarz, W. Bauhofer, K. Schulte, "Alternating electric field induced agglomeration of carbon black filled resins", Polymer 43, 3079 (2002).
• 4-09.083V
  M. Adameck, M. Hossfeld, M. Eich, "Selective Stereo Gradient Vision System for Rotation and Translation Invariant Classification of Minted Objects with Specular Metallic Surfaces", Proc. of SPIE 4661, 206 (2002).
• 4-09.084V
  G. Böttger, C. Liguda, M. Schmidt, M. Eich, "Improved transmission characteristics of moderate refractive index contrast photonic crystal slabs", Appl. Phys. Lett. 81, 14 (2002).
• 4-09.085V
  J. Seekamp, S. Zankovych, A.H. Helfer, P. Maury, C.M. Sotomayor Torres, G. Böttger, C. Liguda, M. Eich, B. Heidari, L. Montelius, J. Ahopelto, "Nanoimpreted passive optical devices", Nanotechnology 13, 1 (2002).
• 4-09.086V
  M. Eich, M. Kuzky, "Linear and Nonlinear Optics of Organic Materials", Proc. of SPIE 4798 (2002).
• 4-09.087V
  M. Adameck, M. Hossfeld, M. Eich, "Three color selective stereo gradient method for fast topography recognition of metallic surfaces", Proc. of SPIE 5011 (2003).
• 4-09.088V
  R.R. Schliewe, F.A Yildirim, W. Bauhofer, W. Krautschneider,"Electrode structures for characterization of organic materials and for application in organic electronics", Proc. of the 6th Semiconductor Advances for Future Electronics (SAAFE) workshop 2003 Band 6 Seite 648 (2003).
• 4-09.089V
  T. Prasse, J.-Y. Cavialle, W. Bauhofer, "Electric anisotropy of carbon nanofibre/epoxy resin composites due to electric field induced alignment", Composites Science and Technology Band 63 Seite 1835 (2003).
• 4-09.090V
  R.R. Schliewe, F.A. Yildirim, W. Bauhofer, W. Krautschneider, "Deposition and characterization of polymeric layers for organic electronics", Proc. of Polytronic 2003 Seite 263 (2003).
• 4-09.091V
  M. Schmidt, G. Böttger, C. Liguda, A. Petrov, K. Mellert, M. Eich et al., "Tuneable Polymer Photonic Crystals", SPIE: Linear and Nonlinear Optics of Organic Materials Band 5212 (2003).
• 4-09.092V
  M. Augustin, M. Schmidt, G. Böttger, M. Eich, et.al., "Photonic crystal optical circuits in moderate index materials", Ed.: K. Busch, R. Wehrspohn, H. Föll; Berlin: Wiley-VCH, Berlin (2003).
• 4-09.093V
  M. Schmidt, G. Boettger, M. Eich, W. Morgenroth, U. Huebner, R. Boucher, H. G. Meyer, D. Konjhodzic, H. Bretinger, and F. Marlow, "Ultralow refractive index substrates¿a base for photonic crystal slab waveguides", Appl. Phys. Lett. Band 85 (2004).
• 4-09.094V
  A. Petrov and M. Eich, "Zero dispersion at small group velocities in photonic crystal waveguides (in press)", Appl. Phys. Lett. (2004).
• 4-09.095V
  M. Schmidt, C. Liguda, G. Boettger, M. Eich, H. G. Meyer, U. Huebner, W. Morgenroth, and F. Marlow, "UV-trimming of two dimensional polymer photonic crystals (accepted for publication)", Journal of Nonlinear Optical Physics & Materials Band 13 Seite 535 (2004).
• 4-09.096V
  A. Petrov and M. Eich, "Dispersion compensation with photonic crystal line-defect waveguides (accepted for publication)", EEE Journal on Selected Areas in Communications ¿Nanotechnologies for communications¿ (2004).
• 4-09.097V
  F.A. Yildirim, R.R. Schliewe, W. Bauhofer, W. Krautschneider, "Investigation of Materials and Electrode Structures for Organic Field Effect Transistors", Proc. of Int. Symposium, 28.-30. September 2004, Technologies for Polymer Electronics, TPE04 (2004).
• 4-09.098V
  R. Meixner, F.A. Yildirim, R.R. Schliewe, H. Goebel, W. Bauhofer, W. Krautschneider, "Precursor Studies for a simple Method to Setup an Allpolymer Thin-Film-Transistor", Proc. of Int. Symposium, 28.-30. September 2004, Technologies for Polymer Electronics, TPE04 (2004).
• 4-09.099V
  J.K.W. Sandler, A.H. Windle, C.A. Martin, M.-K. Schwarz, W. Bauhofer, K. Schulte, M. S. P. Shaffer, "Percolation in multi-wall carbon-nanotube-epoxy composites - Influence of processing parameters, nanotube aspect ratio and electric fields on the bulk conductivity", Mat. Res. Soc. Symp. Proc. Band 788 (2004).
• 4-09.100V
  C.A. Martin, J.K.W. Sandler, M.S.P. Shaffer, M.-K. Schwarz, W. Bauhofer, K. Schulte, A. H. Windle, "Formation of percolating networks in multi-wall carbon-nanotube-epoxy composites", Composites Sci. Technol. Band 64 Seite 2309 (2004).
• 4-09.101V
  C.A. Martin, J.K.W. Sandler, A.H. Windle, M.-K. Schwarz, W. Bauhofer, K. Schulte, M.S.P. Shaffer, "Electric field-induced aligned multi-wall carbon nanotube networks in epoxy composites", Polymer (submitted) (2004).
• 4-09.102V
  R. Boucher, U. Hübner, W. Morgenroth, H. Roth, M. Schmidt and M. Eich, "Etching of sub-micron high aspect ratio holes in oxides and polymers", Microelec. Engin. Band 73 Seite 330 (2004).
• 4-09.103V
  M. Schmidt, G. Boettger, M. Eich, U. Huebner, W. Morgenroth, H. G. Meyer, "Spectral trimming of photonic crystals", CFN Lecture of Functional Nanostructures, Springer series Lecture Notes in Physics Band 658 Seite 71 (2005).

Dissertationen

• 4-09.001D
  Jörg Pillath, "Charakterisierung der elektrischen Transporteigenschaften von In(x)Ga(1-x)As/InP-Heterostrukturen mittels Magnetotransportmessungen", Dissertation TU Hamburg-Harburg (1996).
• 4-09.002D
  Dirk Rüter, "Lumineszierende Materialien für die Silizium-Technologie", Dissertation TU Hamburg-Harburg (1997).
• 4-09.003D
  Ralf Janke, "Ein Modell zur Beschreibung der Magnetisierung- und Transportstromvorgänge in Hochtemperatursupraleitern", Dissertation TU Hamburg-Harburg (1998).
• 4-09.004D
  Andreas Brensing, "Mikrowellenmethoden für Magnetotransportmessungen an Halbleiter-Heterostrukturen", Dissertation TU Hamburg-Harburg (2000).
• 4-09.005D
  Torsten Prasse, "Elektrisch leitfähige polymere Funktions- und Struckturverbundwerkstoffe auf der Basis von Kohlenstoff- Nanopartikeln und Fasern", Dissertation TU Hamburg-Harburg (2001).
• 4-09.006D
  Jörg Seekamp, "Eigenschaften lumineszierender Materialien und ihre Anwendung am Beispiel amorpher Silizium-Kohlenstoff Schichten", Dissertation TU Hamburg-Harburg (2002).
• 4-09.007D
  Robert Blum, "Characterization and applications of polymers with variable refractive index for components in optical telecommunications", Dissertation TU Hamburg-Harburg (2003).
• 4-09.008D
  Markus Adameck, "Entwicklung von Methoden der Prägebildaufnahme zur Merkmalextraktion und Klassifikation von Münzen", Dissertation TU Hamburg-Harburg (2004).