INSTITUTE FOR BIO- AND NANOSYSTEMS, IBN 4
Electrochemical interfaces, biolayers and dynamics of biopolymers
Priv. Doz. Dr. Margret Giesen

 
IBN 4 Home Research Staff/Contact Publications Gallery
Research
Atomic transport at interfaces
Using time-resolved, temperature-variable electrochemical scanning tunneling microscopy (STM) we study the mass transport on electrode surfaces. Using methods from statististical physics, we analyze scaling laws of mesoscopic defect dynamics and from the scaling exponents we gain information on basic atomic processes at interfaces and on the relevant process energies. Such studies are important to understand deposition, corrosion and catalysis. More... .

Dymanics of polymers
Biopolymer networks are important constituents in animal cells. They define the shape of cells and their dynamical properties the mobility of cells. Using confocal laser scanning microscopy and modern fluorescence light microscopy we study the dynamical properties of biopolymer solutions and networks. More... .

Surface stress of biolayers
Using the laser-deflection method , we study the physical surface stress of biolayers and their interactions with biotic and abiotic factors. In our experiments we use the epicuticular wax layer of plant leaves. From these studies we deduce new information on the interactions of plants with the natural environment. More... .

Staff/Contact
Contact Staff CV Giesen

Contact
Forschungszentrum Jülich
Institut für Bio- und Nanosysteme IBN 4
D 52425 Jülich
Germany

Phone: (+49) 2461 / 61- xxxx see Staff

Fax: (+49) 2461 / 61 - 3907

email: see Staff

Staff

Name Email Room Phone  
Priv. Doz. Dr. Margret Giesen (physicist) m.giesen@fz-juelich.de R 325b 4108 Image
Karl Hieble (technician) k.hieble@fz-juelich.de R 327 6516 Image
Dr. Guillermo Beltramo (chemist) g.beltramo@fz-juelich.de R 326 5388 Image
Dr. Masashi Degawa (physicist) m.degawa@fz-juelich.de R 326 5388 Image
Dipl. Phys. Agnieszka Krol-Otwinowska a.krol@fz-juelich.de R 328 2559 Image
Dipl. Phys. Marta Romanowska m.romanowska@fz-juelich.de R 335 1412 Image
         
Electrochemical STM Lab 1   R 307 4118 Image
Electrochemical STM Lab 2   R 305 6391 Image
Chemistry Lab   R 306 1451 Image
Laser deflection and UHV STM Lab   R 308 4033 Image
Microscopy Lab   R 216 4102 Image
Biochemistry II Lab   R 218 4128 Image

Publications

1991-1994, 1995-1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 2008

1991-1994(back)
  1. J. Frohn, M. Giesen, M. Poensgen, J. F. Wolf, H. Ibach
    "Attractive interaction between steps"
    Physical Review Letters 67 (1991) 3543 - 3546

  2. M. Giesen, J. Frohn, M. Poensgen, J. F. Wolf, H. Ibach
    "Frizzed appearance of steps in tunnel microscopy on Cu (100) and vicinal Cu (11n) surfaces"
    Journal Vacuum Science and Technology A 10 (1992) 2597 - 2599

  3. M. Poensgen, J. F. Wolf, J. Frohn, M. Giesen, H. Ibach
    "Step dynamics on Ag (111) and Cu (100) surfaces"
    Surface Science 274 (1992) 430 - 440

  4. M. Giesen-Seibert, R. Jentjens, M. Poensgen, H. Ibach
    "Time dependence of step fluctuations on vicinal Cu (1 1 19) surfaces investigated by tunneling microscopy"
    Physical Review Letters 71 (1993) 3521 - 3524, und Erratum Physical Review Letters 73 (1994) E911 - E911

  5. M. Giesen-Seibert, H. Ibach
    "On the time structure of tunneling images of steps"
    Surface Science 316 (1994) 205 - 222
1995-1996(back)
  1. M. Giesen-Seibert, F. Schmitz, R. Jentjens, H. Ibach
    "Time fluctuations of steps on Cu (11n) surfaces investigated by temperature variable tunneling microscopy"
    Surface Science 329 (1995) 47 - 60

  2. M. Giesen-Seibert
    "Rastertunnelmikroskopie von Gleichgewichtsfluktuationen monoatomarer Stufen - Eine experimentelle und theoretische Analyse am Beispiel von Vizinalflächen"
    Berichte des Forschungszentrums Jülich; 3051; ISSN 0944-2952;
    D82 (Diss. RWTH Aachen; 1995)

  3. M. Giesen, F. Schmitz, H. Ibach
    "The growth of cobalt films on vicinal copper surfaces"
    Surface Science 336 (1995) 269 - 279

  4. H. Ibach, M. Giesen, T. Flores, M. Wuttig, G. Treglia
    "Vacancy generation at steps and the kinetics of surface alloy formation"
    Surface Science 364 (1996) 453 - 466

  5. M. Giesen, G. Schulze Icking-Konert, D. Stapel, H. Ibach
    "Step fluctuations on Pt (111) surfaces"
    Surface Science 366 (1996) 229 - 238
1997(back)
  1. M. Giesen
    "Step-step interaction energy on vicinal copper surfaces"
    Surface Science 370 (1997) 55 - 63

  2. J. B. Hannon, M. Giesen, C. Klünker, G. Schulze Icking-Konert, D. Stapel, H. Ibach, J. E. Müller
    "Incorporation of potassium at the Pt (111) surface"
    Physical Review Letters 78 (1997) 1094 - 1097

  3. H. Ibach, C. E. Bach, M. Giesen, A. Grossmann
    "Potential induced stress in the solid - liquid interface - Au (111) and Au (100) in an HClO4 - electrolyte"
    Surface Science 375 (1997) 107 - 119

  4. M. Giesen, R. J. Phaneuf, E. D. Williams, T. L. Einstein, H. Ibach
    "Characterization of p-n-junctions and surface states on silicon devices by photo emission electron microscopy"
    Applied Physics A 64 (1997) 423 - 430, (invited paper)

  5. C. E. Bach, M. Giesen, H. Ibach, T. L. Einstein
    "Stress relief in reconstruction"
    Physical Review Letters 78 (1997) 4225 - 4228

  6. M. Giesen, M. Dietterle, D. Stapel, H. Ibach, D. M. Kolb
    "Step fluctuations on a Ag (111) electrode - A new access to the solid/liquid interface"
    Surface Science 384 (1997) 168 - 178

  7. J. B. Hannon, C. Klünker, M. Giesen, H. Ibach, N. C. Bartelt, J. C. Hamilton
    "Surface self-diffusion by vacancy motion: Island ripening on Cu (001)"
    Physical Review Letters 79 (1997) 2506 - 2509

  8. M. Giesen, U. Linke, H. Ibach
    "Restructuring of the vicinal Cu (997) surface"
    Surface Science 389 (1997) 264 - 271

  9. M. Giesen, M. Dietterle, D. Stapel, H. Ibach, D. M. Kolb
    "Dynamical processes at the solid / liquid interface"
    Proceedings of the MRS Materials Research Society Vol. 451 (1997) 9 - 17, (invited paper)
1998(back)
  1. M. Giesen, G. Schulze Icking-Konert, H. Ibach
    "Fast decay of adatom islands and mounds on Cu (111) - A new effective channel for interlayer mass transport"
    Physical Review Letters 80 (1998) 552 - 555

  2. M. Giesen, R. J. Phaneuf, E. D. Williams, T. L. Einstein
    "Photoelectron emission microscopy of Schottky contacts"
    Surface Science, 396 (1998) 411 - 421

  3. G. Schulze Icking-Konert, M. Giesen, H. Ibach
    "Decay of Cu adatom islands on Cu (111)"
    Surface Science 398 (1998) 37 - 48

  4. M. Giesen, G. Schulze Icking-Konert
    "Equilibrium fluctuations and decay of step bumps on vicinal Cu (111) surfaces"
    Surface Science 412/413 (1998) 645 - 656

  5. C. Klünker, J. B. Hannon, M. Giesen, H. Ibach, G. Boisvert, L. J. Lewis
    "Activation energy for the decay of two-dimensional islands on Cu (100)"
    Physical Review B 58 (1998) 7556R - 7559R
1999(back)
  1. C. Klünker, C. Steimer, J. B. Hannon, M. Giesen, H. Ibach
    "Vibrations of potassium at Pt(111) and formation of KOH studied by electron energy loss spectroscopy"
    Surface Science 420 (1999) 25 - 32

  2. M. Giesen, G. Schulze Icking-Konert
    "Step-step interaction energy on Cu (111) vicinal surfaces"
    Surface Review and Letters 6 (1999) 27 - 34

  3. M. Giesen, G. Schulze Icking-Konert, H. Ibach
    "Interlayer mass transport and Quantum Confinement of Electronic States"
    Physical Review Letters 82 (1999) 3101 - 3104

  4. M. Giesen, H. Ibach
    "Step Edge Barrier Controlled Decay of Multilayer Islands on Cu (111)"
    Surface Science 431 (1999) 109 - 115

  5. M. Giesen
    "Coalescence Induced Rapid Decay of Cu Islands on Cu (111)"
    Surface Science 441 (1999) 391 - 398

  6. G. Schulze Icking-Konert, M. Giesen, H. Ibach
    "A Novel Method for the Experimental Determination of Step Energies"
    Physical Review Letters 83 (1999) 3880 - 3883

  7. M. Giesen
    "Scaling Transition of the Time Dependence of Step Fluctuations on Cu (111)"
    Surface Science 442 (1999) 543 - 549

  8. M. Giesen, R. Randler, S. Baier, H. Ibach, D. M. Kolb
    "Step dynamics on Cu (100) and Ag (111) electrodes in an aqueous electrolyte"
    Electrochimica Acta 45 (1999) 527 - 536 (invited paper)
2000(back)
  1. M. Giesen, T. L. Einstein
    "Analysis of Terrace Width Distribution by Wigner Surmise and Gaussian Analysis - A Comparison"
    Surface Science 449 (2000) 191 - 206

  2. H. L. Richards, S. D. Cohen, T. L. Einstein, M. Giesen
    "Extraction of Step-repulsion Strengths from Terrace Width Distributions: Statistical and Analytic Considerations"
    Surface Science 453 (2000) 59-74

  3. S. Walter, V. Blum, L. Hammer, S. Müller, K. Heinz, M. Giesen
    "The Role of an Energy Dependent Inner Potential in Quantitative Low-energy Electron Diffraction"
    Surface Science 458 (2000) 155-161

  4. M. Giesen, H. Ibach
    Reply to Comment on Phys. Rev. Lett. 82 (1999) 3101, "Interlayer mass transport and Quantum Confinement of Electronic States"
    Physical Review Letters 85 (2000) 469-469

  5. S. Baier, M. Giesen
    "Activation Energy for Ag Dissolution on Ag(111) Electrodes in Sulfuric Acid"
    Physical Chemistry Chemical Physics 2 (2000) 3675 - 3680

  6. M. Giesen, H. Ibach
    "On the Mechanism of Rapid Mound Decay"
    Surface Science 464 (2000) L697 - L702

  7. M. Giesen, D. M. Kolb
    "Influence of Anion Adsorption on the Step Dynamics on Au(111) Electrodes"
    Surface Science 468 (2000) 149 - 164
2001(back)
  1. C. Steimer, M. Giesen, H. Ibach
    "What Does One Learn from Equilibrium Shapes of Two-dimensional Islands on Surfaces?"
    Surface Science 471 (2001) 80 - 100

  2. M. Giesen
    "Step and Island Dynamics at Solid/Vacuum and Solid/Liquid Interfaces"
    Progress in Surface Science 68 (2001) 1 - 154 (invited paper)

  3. C. Steimer, M. Giesen, H. Ibach, L. Verheij
    "Experimental Determination of Step Energies From Island Equilibrium Shapes and Island Shape Fluctuations - A Comparison of Two Methods for Cu(100), Cu(111) and Ag(111)"
    Physical Review B 64 (2001) 085416(1-7)

  4. M. Giesen, S. Baier
    "Atomic Transport Processes on Electrodes in Liquid Environment"
    Journal of Physics: Condensed Matter 13 (2001) 5009 - 5026 (invited paper)

  5. T. L. Einstein, H. L. Richards, S. D. Cohen, O. Pierre-Louis, M. Giesen
    "Terrace-Width Distributions on Vicinal Surfaces: Generalized Wigner Surmise and Extraction of Step-Step Repulsions"
    Applied Surface Science 175 - 176 (2001) 62 - 68

  6. M. Giesen, H. Ibach
    "Have We Found the Final Explanation for the Onset of Rapid Interlayer Mass Transport?"
    Proceedings of the MRS Materials Research Society, Vol. 672 (2001) O1.2
2002 (back)
  1. S. Dieluweit, H. Ibach, M. Giesen
    "Potential dependence of step and kink energies on Au(100) electrodes in sulfuric acid"
    Faraday Discussions 121 (2002) 27 - 42 (invited paper)

  2. S. Baier, S. Dieluweit, M. Giesen
    "Step and Island Dynamics on Cu(111), Ag(111) and Au(100) electrodes in electrolyte"
    Surface Science 502 - 503 (2002) 463 - 473 (invited paper)

  3. S. Dieluweit, M. Giesen
    "STM studies on the island dynamics on Au(100) in sulfuric acid"
    Journal of Physics: Condensed Matter 14 (2002) 4211 - 4225 (invited paper)

  4. S. Dieluweit, M. Giesen
    "Determination of step and kink energies on Au(100) electrodes in sulfuric acid solution with electrochemical STM"
    Journal of Electroanalytical Chemistry 524-525 (2002) 194 - 200

  5. A. Pavlovska, E. Bauer, M. Giesen
    "A low energy electron microscopy study of In on Si(111)"
    Journal of Vacuum Science and Technology B20 (2002) 2478 - 2491
2003(back)
  1. M. Giesen, H. Ibach
    "Homoepitaxial growth on nominally flat and stepped Cu(111) surfaces: Island nucleation in fcc sites vs. hcp stacking fault sites"
    Surface Science 529 (2003) 135 - 143

  2. K. Dahmen, M. Giesen, J. Ikonomov, H. Ibach, K. Starbova
    "Steady-state surface stress induced in nobel gas sputtering"
    Thin solid films 428 (2003) 6-10

  3. S. Dieluweit, H. Ibach, M. Giesen, T.L. Einstein
    "Orientation dependence of step stiffness: Failure of SOS and Ising Models to describe experimental data"
    Physical Review B 67 (2003) R121410(1-4)

  4. H. Ibach, M. Giesen, W. Schmickler
    "Potential dependence of the step line tension on surfaces in contact with an electrolyte"
    Journal of Electroanalytical Chemistry 544 (2003) 13 - 23
2004(back)
  1. S. Dieluweit, M. Giesen
    "Dynamics and energetics on chiral surfaces"
    Journal of Molecular Catalysis A: Chemical 216 (2004) 263 - 272, (invited paper)

  2. M. Giesen, S. Baier, H. Ibach, W. Schmickler
    "The instability of vicinal electrode surfaces against step bunching"
    Surface Science, 573 (2004) 17 - 23 (invited paper)

  3. T.J. Stasevich, T.L. Einstein, R.K.P. Zia, M. Giesen, H. Ibach, F. Szalma
    "Effects of next-nearest-neighbor interactions on the orientation dependence of step stiffness: Reconciling theory with experiment for Cu(001)"
    Physical Review B 70 (2004) 245404
2005(back)
  1. M. Giesen, G. Beltramo, S. Dieluweit, J. Müller, H. Ibach, E. Santos, W. Schmickler
    "The thermodynamics of electrochemical annealing"
    Surface Science 595 (2005) 127 - 137

  2. T.J. Stasevich, T.L. Einstein, H. Gebremariam, M. Giesen, Ch. Steimer, H. Ibach
    "Low-temperature orientation dependence of step stiffness on surfaces"
    Physical Review B 71 (2005) 245414
2007(back)
  1. . J.Ikonomov, K. Starbova, M. Giesen,
    "Island coalescence and diffusion along kinked steps on Cu(001): Evidence for a large kink Ehrlich-Schwoebel barrier"
    Surface Science 601 (2007) 1403 - 1408

  2. E. Pichardo-Pedrero, G. Beltramo, M. Giesen,
    "Electrochemical annealing and its relevance in metal electroplating: An atomistic view"
    Applied Physics A 87 (2007) 461 - 467 (invited paper)

  3. G. Beltramo, H. Ibach, J. E. Müller, M. Giesen,
    " A Novel Approach to Measure the Step Line Tension and the Step Dipole Moment on Vicinal Au(001) Electrodes"
    Surface Science 601 (2007) 1876 - 1885

  4. E. Pichardo-Pedrero, M. Giesen,
    "Comparative STM Studies on island equilibrium shapes, shape fluctuations and island coalescence on Au(001) electrodes in chloric and sulfuric acid solutions"
    Electrochimica Acta 52 (2007) 5659 - 5668 (invited paper)

  5. J. Ikonomov, K. Starbova, H. Ibach, M. Giesen,
    "Measurement of Step and Kink Energies and of the Step Edge Stiffness from Island Studies on Pt(111)"
    Physical Review B 75 (2007) 245411 - 8

  6. M. Giesen
    An Atomistic View On Fundamental Transport Processes On Metal Surfaces"
    in AIP Conference Proceedings 916:
    "Perspectives on Inorganic, Organic, and Biological Crystal Growth: From Fundamentals to Applications: Based on the lectures presented at the 13th International Summer School on Crystal Growth, Park City, Utah (USA), 5-11 August 2007",
    Eds. M. Skowronski, J.J. DeYoreo, C.A. Wang,1st Edition, American Institute of Physics, New York (2007),
    p. 115-135 (invited paper)
2008(back)
  1. G. Beltramo, H. Ibach, U. Linke, M. Giesen,
    "" Determination of the Step Dipole Moment and the Step Line Tension on Ag(001) Electrodes " "
    Electrochimica Acta, in press
last change 30.01.2008 | | Print