Regular Publications

1.       J. Kaminski, P. Kratzer, and C. Ratsch, A New Method for Surface Energy Calculations, Phys. Rev. B 95, 085408 (2017). (click here for pdf)

2.       D. Berger and C. Ratsch, Line defects in graphene: How doping affects the electronic and mechanical properties, Phys. Rev. B 93, 235441 (2016). (click here for pdf)

3.      T.H. Yu and C. Ratsch, Computational study of ridge states in GaAs nanopillars, Journ. Appl. Phys. 118, 055703 (2015). (click here for pdf)

4.      S. Kiani, C. Ratsch, A. M. Minor, S. Kodambaka, and J.-M. Yang, Orientation- and Size-Dependent Room-Temperature Plasticity in ZrC Crystals, Philosophical Magazine 95, 985 (2015). (click for pdf)

5.      S. Kiani, C. Ratsch, A. M. Minor, J.-M. Yang, and S. Kodambaka, In situ Transmission Electron Microscopy Observations of Room-Temperature Plasticity in Sub-Micron-Size TaC(100) and TaC(011) Single-Crystals, Scripta Materialia 100, 13 (2015). (click for pdf)

6.      W. Zhang, X. Yu, E. Cahyadi, Y.-H. Xie, and C. Ratsch, On the kinetic barriers of graphene homo-epitaxy, Appl. Phys. Lett. 105, 221607 (2014). (click for pdf)

7.      J. Papac, D. Margetis, F. Gibou, and C. Ratsch, Island-dynamics model for mound formation: Effect of a step-edge barrier, Phys. Rev. E 90, 022404 (2014). (click for pdf)

8.      A. Baskaran, C. Ratsch, and P. Smereka, Modeling the Elastic Energy of Alloys: Potential Pitfalls of Continuum Treatments, submitted to Journal of the Mechanics and Physics of Solids (2014).

9.      J. Shapiro, A. Lin, C. Ratsch, and D. Huffaker, Control of Stacking Faults in Catalyst-Free GaAs Nanopillars, Nanotechnology 24, 475601 (2013). (click for pdf)

10.  J. Papac, A. Helgadottir, C. Ratsch, and F. Gibou, A level set approach for diffusion and Stefan-type problems with Robin boundary conditions on quadtree/octree adaptive Cartesian grids, Journ. Comp. Phys. 233, 241 (2013). (click for pdf)

11.  T. H. Yu, L. Yan, W. You, R. B. Laghumavarapu, D. Huffaker, and C. Ratsch, The effect of passivation on different GaAs surfaces, Appl. Phys. Lett. 103, 173902 (2013). (click for pdf)

12.  J.N. Shapiro, A. Lin, D.L. Huffaker, and C. Ratsch, Potential energy surface of In and Ga adatoms above the (111)A and (110) surfaces of a GaAs nanopillar, Phys. Rev. B 84, 085322 (2011). (click for pdf)

13.  C. Ratsch, Strain dependence for microscopic growth parameters for Ag on Ag(100), Phys. Rev. B 83, 153406 (2011). (click for pdf)

14.  J. Papac, F. Gibou, and C. Ratsch, Efficient Symmetric Discretization for the Poisson, Heat and Stefan-Type Problems with Robin Boundary Conditions, Journ. Comp. Phys. 229, 875 (2010). (click for pdf)

15.  C. Ratsch, J. DeVita, and P. Smereka, A Levelset Simulation for the Strain-Driven Sharpening of the Island Size Distribution during Heteroepitaxy, Phys. Rev. B, 80, 155309 (2009). (click for pdf)

16.  M.A. Saum, T.P. Schulze, and C. Ratsch, Inverted list kinetic Monte Carlo with rejection applied to directed self-assembly of epitaxial growth, Communication in Computational Physics 6, 553 (2009). (click for pdf)

17.  J.M. Reich, X.B. Niu, Y.-J., R.E. Caflisch, and C. Ratsch, Lateral alloy segregation in thin heteroepitaxial films, Phys. Rev. B 79, 073405 (2009). (click for pdf)

18.  X.B. Niu, E. Uccelli, A. Fontcuberta i Morral, and C. Ratsch, A Level Set Simulation for Ordering of Quantum Dots via Cleaved-Edge Overgrowth, Appl. Phys. Lett. 95, 023119 (2009). (click for pdf)

19.  X. Niu, Y.-J. Lee, R.E. Caflisch, and C. Ratsch, Optimal Capping Layer Thickness for Stacked Quantum Dots, Phys. Rev. Lett. 101, 086103 (2008). (click for pdf)

20.  A. Fielicke, C. Ratsch, G. von Helden, and G. Meijer, The Far-Infrared Spectra of Neutral and Cationic Niobium Clusters: Nb50/+ to Nb90/+, Journ. Chem. Phys 127, 234306 (2007). (click for pdf)

21.  X. Niu, R. Vardavas, R.E. Caflisch, and C. Ratsch, A Level Set Simulation of Directed Self-Assembly during Epitaxial Growth, Phys. Rev. B 74, 193403 (2006). (click for pdf)

22.  S.H. Lee, H.P. Gillis, and C. Ratsch, Smoothening Mechanism for GaAs(100) Surfaces during Inductively Coupled Plasma Etching, Appl. Phys. Lett. 88, 161916 (2006). (click for pdf)

23.  A. Dalla Volta, D.D. Vvedensky, N. Gogneau, E. Pelucchi, A. Rudra, B. Dwir, E. Kapon, and C. Ratsch, Step Ordering Induced by Nonplanar Patterning of GaAs Surfaces, Appl. Phys. Lett. 88 203104 (2006). (click for pdf)

24.  Z.M. Zhao, T.S. Yoon, W. Feng, B.Y. Li, J. H. Kim, J. Liu, O. Hulko, Y.H. Xie, H.M. Kim, K.B. Kim, H.J. Kim, K.L. Wang, C. Ratsch, R. Caflisch, D.Y. Ryu, and T.P. Russel, The challenges in guided self-assembly of Ge and InAs quantum dots on Si, Thin Solid Films 508, 195 (2006). (click for pdf)

25.  C. Ratsch, A. Fielicke, A. Kirilyuk, J. Behler, M. Scheffler, G. von Helden, and G. Meijer, Structure Determination of Small Vanadium Clusters by Density-Functional Theory in Comparison with Experimental Far-Infrared Spectra, Journ. Chem. Phys. 122, 124302 (2005). (click for pdf)

26.  A. Fielicke, C. Ratsch, G. von Helden, and G. Meijer, Isomer Selective Infrared Spectroscopy of Neutral Metal Clusters, Journ. Chem. Phys. 122, 091105 (2005). (click for pdf)

27.  C. Ratsch, Y. Landa, and R. Vardavas, Lack of Scaling of Point Island Models in Submonolayer Epitaxy, Surface Science 578, 196 (2005). (click for pdf)

28.  C. Ratsch, J. Garcia, and R.E. Caflisch, The Influence of Edge Diffusion on the Growth Mode on Vicinal Surfaces, Appl. Phys. Lett. 87, 141901 (2005). (click for pdf)

29.  A. Fielicke, A. Kirilyuk, C. Ratsch, J. Behler, M. Scheffler, G. von Helden, and G. Meijer, Structure determination of isolated meatal clusters via far-infrared spectroscopy, Phys. Rev. Lett. 93, 023401 (2004). (click for pdf)

30.  R. Vardavas, C. Ratsch, and R.E. Caflisch, Level Sets and Surface Defects, Surface Science 569, 185 (2004). (click for pdf)

31.  F. Gibou, C. Ratsch, and R.E. Caflisch, Capture Numbers and Scaling Laws in Epitaxial Growth, Phys. Rev. B 67, 155403 (2003). (click for pdf)

32.  D.D. Vvedensky, C. Ratsch, F. Gibou, and R. Vardavas, Singularities and Spatial Fluctuations in Submonolayer Epitaxy, Phys. Rev. Lett. 90, 189601 (2003). (click for pdf)

33.  C. Ratsch, C. Anderson, R.E. Caflisch, L. Feigenbaum, D. Shaevitz, M. Sheffler, and C. Tiee, Multiple Domain Dynamics Simulated with Coupled Level Sets, Appl. Math. Lett. 16, 1165 (2003). (click for pdf)

34.  M. Petersen, A. Zangwill, and C. Ratsch, Homoepitaxial Ostwald Ripening, Surf. Science 536, 55 (2003). (click for pdf)

35.  C. Ratsch, M.F. Gyure, R.E. Caflisch, F. Gibou, M. Petersen, M. Kang, J. Garcia, and D.D. Vvedensky, Level-Set Method for Island Dynamics in Epitaxial Growth, Phys. Rev. B 65, 195403 (2002). (click for pdf)

36.  W. Barvosa-Carter, R.S. Ross, C. Ratsch, F. Grosse, J.H.G. Owen, and J.J. Zinck, Atomic scale structure of InAs(001)-(2x4) steady-state surfaces determined by scanning tunneling microscopy and density functional theory, Surf. Sci. 499, L129 (2002). (click for pdf)

37.  C. Ratsch, Strain-Induced Change of Surface Reconstructions for InAs(001), Phys. Rev. B 63, 161306(R) (2001). (click for pdf)

38.  C. Ratsch, M. Kang, and R.E. Caflisch, Atomic Size Effects in Continuum Modeling, Phys. Rev. E 64, 020601 (2001). (click for pdf)

39.  S. Chen, B. Merriman, M. Kang, R.E. Caflisch, C. Ratsch, L.T. Cheng, M.F. Gyure, R. Fedkiw, C. Anderson, and S. Osher, Level Set Method for Thin Film Epitaxial Growth, Journ. Comp. Phys. 167, 475 (2001). (click for pdf)

40.  F. Gibou, C. Ratsch, S. Chen, M.F. Gyure, and R.E. Caflisch, Rate Equations and Capture Numbers with Implicit Island Correlation, Phys. Rev. B 63, 115401 (2001). (click for pdf)

41.  J.J. Zinck, R.S. Ross, W. Barvosa-Carter, F. Grosse, J.H.G. Owen, and C. Ratsch, In-Situ Threshold Photoemission Yields Correlated to Surface Reconstructions of InAs(001), Appl. Phys. Lett. 79, 2354 (2001). (click for pdf)

42.  M. Petersen, C. Ratsch, R.E. Caflisch, and A. Zangwill, Level Set Approach to Reversible Epitaxial Growth, Phys. Rev. E 64, 061602 (2001). (click for pdf)

43.  C. Ratsch, M.F. Gyure, S. Chen, M. Kang, and D.D. Vvedensky, Fluctuations and Scaling in Aggregation Phenomena, Phys. Rev. B 61, R10598 (2000). (click for pdf)

44.  C. Ratsch, M.C. Wheeler, and M.F. Gyure, Roughening due to Edge Diffusion for Irreversible Aggregation, Phys. Rev. B 62, 12636 (2000). (click for pdf)

45.  C. Ratsch, W. Barvosa-Carter, F. Grosse, J.H.G. Owen, and J.J. Zinck, Surface Reconstructions for InAs(001) Studied with DFT and STM, Phys. Rev. B 62, R7719 (2000). (click for pdf)

46.  R.E. Caflisch, W. E, M.F. Gyure, B. Merriman, and C. Ratsch, Kinetic Model for a Step Edge in Epitaxial Growth, Phys. Rev. E 59, 6879 (1999). (click for pdf)

47.  R.E. Caflisch, M.F. Gyure, B. Merriman, S. Osher, C. Ratsch, D.D. Vvedensky, and J.J. Zinck, Island Dynamics and the Level Set Method for Epitaxial Growth, Appl. Math. Lett. 12, 13 (1999). (click for pdf)

48.  M.F. Gyure, J.J. Zinck, C. Ratsch, and D.D. Vvedensky, Unstable Growth on Rough Surfaces, Phys. Rev. Lett. 81, 4931 (1998). (click for pdf)

49.  M.F. Gyure, C. Ratsch, B. Merriman, R.E. Caflisch, S. Osher, J.J. Zinck, and D.D. Vvedensky, Level Set Methods for the Simulation of Epitaxial Phenomena, Phys. Rev. E 58, R6931 (1998). (click for pdf)

50.  D.D. Vvedensky, R.E. Caflisch, M.F. Gyure, B. Merriman, S. Osher, C. Ratsch, J.J. Zinck; Island-size distributions for submonolayer epitaxy: rate equations and beyond; Proceedings of MRS Spring Meeting 1998; Warrendale, PA, USA: Mater. Res. Soc, 1998.

51.  C. Ratsch and M. Scheffler, Density-Functional Theory Calculations of Hopping Rates of Surface Diffusion, Phys. Rev. B 58, 13163 (1998). (click for pdf)

52.  C. Ratsch, A.P. Seitsonen, and M. Scheffler, Strain-Dependence of Surface Diffusion: Ag on Ag(111) and Pt(111), Phys. Rev. B 55, 6750 (1997). (click for pdf)

53.  C. Ratsch, P. Ruggerone, and M. Scheffler, Density-Functional Theory of Surface Diffusion and Growth of Metals, in Surface Diffusion: Atomistic and Collective Processes, ed. M. Tringides (Plenum Press, 1997), 83-103. (click for pdf)

54.  C. Ratsch, P. Smilauer, D.D. Vvedensky, and A. Zangwill, Mechanism for Coherent Island Formation during Heteroepitaxy, J. Phys. I 6, 575 (1996). (click for pdf)

55.  C. Ratsch, P. Smilauer, A. Zangwill, and D.D. Vvedensky, Submonolayer epitaxy without a critical nucleus, Surf. Sci. 329, L599 (1995). (click for pdf)

56.  D.D. Vvedensky, A. Zangwill, C.N. Luse, C. Ratsch, P. Smilauer, and M.R. Wilby, Scale Invariance in Epitaxial Growth, in Fluctuations and Order: The New Synthesis, edited by M. Millonas (Springer, New York, 1995).

57.  C. Ratsch, A. Zangwill, P. Smilauer, and D.D. Vvedensky, Saturation and Scaling of Epitaxial Island Densities, Phys. Rev. Lett 72, 3194 (1994). (click for pdf)

58.  C. Ratsch, A. Zangwill, and P. Smilauer, Scaling of heteroepitaxial island sizes, Surf. Sci. 314, L937 (1994). (click for pdf)

59.  C. Ratsch, M.D. Nelson, and A. Zangwill, Theory of strained-layer epitaxial growth near step flow, Phys. Rev. B 50, 14489 (1994). (click for pdf)

60.  D.D. Vvedensky, P. Smilauer, C. Ratsch, and A. Zangwill, From submonolayer scaling to multilayer instabilities during epitaxial growth, in Thin Films and Phase Transitions on Surfaces, Proceedings of the EWSSW'94, Pamporovo, Bulgaria, 1994, edited by M. Michailov and L. Gutzow (Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia, 1994).

61.  C. Ratsch and A. Zangwill, Step-flow growth on strained surfaces, Appl. Phys. Lett. 63, 2348 (1993). (click for pdf)

62.  C. Ratsch and A. Zangwill, Equilibrium theory of the Stranski-Krastanov epitaxial morphology, Surf. Sci. 293, 123 (1993). (click for pdf)

63.  A.A. Wheeler, C. Ratsch, A. Morales, H.M. Cox, and A. Zangwill, Dynamics of step flow in a model of heteroepitaxy, Phys. Rev. B 46, 2428 (1992). (click for pdf)

64.  C. Ratsch and A. Zangwill, Morphological stability of facet growth on nonplanar substrates, Appl. Phys. Lett. 58, 403 (1991). (click for pdf)

 

 

Review Articles

1.      R.E. Caflisch and C. Ratsch, Level Set Methods for Simulation of Thin Film Growth, in the Handbook of Materials Modeling, eds. R. Catlow, H. Shercliff, and S. Yip (Kluwer, 2004). (click for pdf)

2.      C. Ratsch and J.A. Venables, Nucleation Theory and the Early Stages of Thin Film Growth, Journal of Vacuum Science and Technology A Vacuum Surfaces and Films, vol. 21, S96 (2003). (click for pdf)

3.      C. Ratsch, P. Ruggerone, and M. Scheffler, Study of strain and temperature dependence of metal epitaxy, in Morphological Organisation during Epitaxial Growth and Removal, eds. Z. Zhang, M. Lagally (World Scientificic, Singapore, 1998). (click for pdf)

4.      P. Ruggerone, C. Ratsch, and M. Scheffler, Density-Functional Theory of Epitaxial Growth of Metals, in The Chemical Physics of Solid Surfaces vol. 8, eds. D.A. King and D.P. Woodruff (Elsevier Science, Amsterdam, 1997), 490-544. (click for pdf)