This page documents my scientic career. My current activities are documented by means of patent applications.
Optical lithography
Oscar Noordman, Andrey Tychkov, Jan Baselmans, James G. Tsacoyeanes, Gary Politi (ASML)
Oscar Noordman, Andrey Tychkov, Jan Baselmans, James G. Tsacoyeanes, Gary Politi (ASML)
Michael Patra, Vladan Blahnik, Manfred Maul (Zeiss)
Speckle in optical lithography and the influence on linewidth roughness
Proc. SPIE 7274, 72741R
(2009)
Melchior Mulder, André Engelen, Oscar Noordman, Robert Kazinczi, Gert Streutker, Bert van Drieenhuizen, Stephen Hsu, Keith Gronlund (ASML)
Markus Degünther, Dirk Jürgens, Johannes Eisenmenger, Michael Patra, Andras Major (Zeiss)
Performance of a programmable illuminator for generation of freeform sources on high NA immersion systems
Proc. SPIE 7520, 75200Y
(2009)
Jörg Zimmermann, Paul Gräupner, Jens T. Neumann, Dirk Hellweg,Dirk Jürgens, Michael Patra, Christoph Hennerkes, Manfred Maul,Bernd Geh, Andre Engelen (Zeiss)
Oscar Noordman, Melchior Mulder, Sean Park, Joep De Vocht
Generation of arbitrary freeform source shapes using advanced illumination systems in high-NA immersion scanners
Proc. SPIE 7640, 764005
(2010)
Quantum optics in disordered systems
On Quantum Optics of Random Media
M. Patra
Influence of spatial correlations on the lasing threshold of random lasers
Phys. Rev. E 67, 065603(R)
(2003)
M. Patra
Decay rate distributions of disordered slabs and application to random lasers
Phys. Rev. E 67, 016603
(2003)
M. Patra
Theory for the photon statistics of random lasers
Phys. Rev. A 65, 043809
(2002)
E. G. Mishchenko, M. Patra and C. W. J. Beenakker
Frequency dependence of the photonic noise spectrum in an absorbing or amplifying diffusive medium
Eur. Phys. J. D 13, 289-297
(2001)
M. Patra, H. Schomerus and C. W. J. Beenakker
Quantum-limited linewidth of a chaotic laser cavity
Phys. Rev. A 61, 23810
(2000)
K. Frahm, H. Schomerus, M. Patra and C. W. J. Beenakker
Large Petermann factor in chaotic cavities with many scattering channels
Europhys. Lett. 49, 48-54
(2000)
M. Patra and C. W. J. Beenakker
Propagation of squeezed radiation through amplifying or absorbing random media
Phys. Rev. A 61, 63805
(2000)
H. Schomerus, K. M. Frahm, M. Patra and C. W. J. Beenakker
Quantum limit of the laser linewidth in chaotic cavities and statistics of residues of scattering matrix poles
Physica A 278, 469-496
(2000)
C.W.J. Beenakker, M. Patra and P.W. Brouwer
Photonic excess noise and wave localization
Phys. Rev. A 61, 051801[R]
(2000)
M. Patra and C. W. J. Beenakker
Long-range correlation of thermal radiation
Phys. Rev. A 59, R43-R46
(1999)
M. Patra and C. W. J. Beenakker
Excess noise for coherent radiation propagating through amplifying random media
Phys. Rev. A 60, 4059
(1999)
C. W. J. Beenakker and M. Patra
Photon shot noise
Mod. Phys. Lett. B 13, 337-347
(1999)
Theoretical biophysics of cell membranes
M. Patra, M. Karttunen, M. Hyvönen, E. Falck, P. Lindqvist and I. Vattulainen
Michael Patra, Mikko Karttunen, Marja T. Hyvönen, Emma Falck and Ilpo Vattulainen
Lipid bilayers driven to a wrong lane in molecular dynamics simulations by truncation of long-range electrostatic interactions
J. Phys. Chem. B 108, 4485-4494
(2004)
A.A. Gurtovenko, Michael Patra, Mikko Karttunen and Ilpo Vattulainen
Cationic DMPC/DMTAP lipid bilayers: Molecular dynamics study
Biophys. J. 86, 3461-3472
(2004)
Emma Falck, Michael Patra, Mikko Karttunen, Marja T. Hyvönen and Ilpo Vattulainen
Lessons of slicing membranes: Interplay of packing, free area, and lateral diffusion in phospholipid/cholesterol bilayers
Biophys. J. 87, 1076-1091
(2004)
Bryan W. Lee, Roland Faller, Amadeu K. Sum, Ilpo Vattulainen, Michael Patra and Mikko Karttunen
Structural effects of small molecules on phospholipid bilayers investigated by molecular simulations
Fluid Phase Equilibria 225, 63-68
(2004)
Teemu Murtola, Emma Falck, Michael Patra, Mikko Karttunen and Ilpo Vattulainen
Coarse-grained model for phospholipid/cholesterol bilayer
J. Chem. Phys. 121, 9156-9165
(2004)
Emma Falck, Michael Patra, Mikko Karttunen, Marja T. Hyvönen and Ilpo Vattulainen
Impact of cholesterol on voids in phospholipid membranes
J. Chem. Phys. 121, 12676-12689
(2004)
Michael Patra, Marja T. Hyvönen, Emma Falck, Ilpo Vattulainen and Mikko Karttunen
Long-range interactions and parallel scalability in molecular simulations
Computer Physics Comm. 176, 14-22
(2007)
Mikko Kupiainen, Emma Falck, Samuli Ollila, Perttu Niemelä, A. A. Gurtovenko, Marja T. Hyvönen, Michael Patra, Mikko Karttunen and Ilpo Vattulainen
Free volume properties of sphingomyelin, DMPC, DPPC, and PLPC bilayers
Journal of Computational and Theoretical Nanoscience 2, 401-413
(2005)
Emma Falck, Michael Patra, Mikko Karttunen, Marja T. Hyvönen and Ilpo Vattulainen
Response to the Comment by Almeida et al.: Free area theories for lipid bilayers - predictive or not?
Biophys. J. 89, 745-752
(2005)
Michael Patra
Lateral-pressure profiles in cholesterol-DPPC bilayers
Eur. Biophys. J. 35, 79-88
(2005)
Michael Patra, Emppu Salonen, Emma Terama, Ilpo Vattulainen, Roland Faller, Bryan W. Lee, Juha Holopainen, Mikko Karttunen
Under the influence of alcohol: The effect of ethanol and methanol on lipid bilayers
Biophys. J. 90, 1121-1135
(2006)
E. Falck, J.T. Hautala, M. Karttunen, P.K.J. Kinnunen, M. Patra, H. Saaren-Seppala, I. Vattulainen, S.K. Wiedmer, and J.M. Holopainen
Interaction of fusidic acid with lipid membranes: Implications to the mechanism of antibiotic activity
Biophys. J. 91, 1787-1799
(2006)
Emma Terämä, O.H. Samuli Ollilla, Emppu Salonen, Amy Rowat, Christa Trandum, Peter Westh, Michael Patra, Mikko Karttunen and Ilpo Vattulainen
Influence of ethanol on lipid membranes: from lateral pressure profiles to dynamics and partitioning
J. Phys. Chem. B 112, 4131-4139
(2008)
Mohsen Pourmousa, Jirasak Wong-Ekkabut, Michael Patra and Mikko Karttunen
Molecular dynamic studies of transportan interacting with a DPPC lipid bilayer
J. Phys. Chem. B 117, 230-241
(2012)
Theoretical physical chemistry
Michael Patra, Marco Patriarca and Mikko Karttunen
Michael Patra and Mikko Karttunen
Systematic comparison of force fields for microscopic simulations of NaCl in aqueous solutions: Diffusion and structural properties
J. Comput. Chem. 25, 678-689
(2004)
Michael Patra and Mikko Karttunen
Stencils with isotropic discretisation error for differential operators
J. Num. Meth. Part. Diff. Eqs. 22, 936-953
(2006)
Michael Patra and Per Linse
Simulation of grafted polymers on nanopatterned surfaces
Nano Lett. 6, 133-137
(2006)
Michael Patra and Per Linse
Reorganization of Nanopatterned Polymer Brushes by the AFM Measurement Process
Macromolecules 39, 4540-4546
(2006)
Woo-Kyung Lee, Michael Patra, Per Linse and Stefan Zauscher
Scaling behavior of nanopatterned polymer brushes
Small 3, 63-66
(2007)
Nonlinear dynamics in semiconductors
Domänendynamik in Halbleiter-Übergittern
M. Patra, G. Schwarz and E. Schöll
Bifurcation analysis of stationary and oscillating domains in semiconductor superlattices with doping fluctuations
Phys. Rev. B 57, 1824-1833
(1998)
G. Schwarz, M. Patra, F. Prengel and E. Schöll
Multistable current-voltage characteristics as fingerprints of growth-related imperfections in semiconductor superlattices
Superlattices and Microstructures 23, 1353-1357
(1998)
M. Patra, G. Schwarz, F. Prengel and E. Schöll
Bifurcation analysis of electric field domains in semiconductor superlattices
Proceedings of the 157. WE-Heraeus Seminar "Selbstorganisation in Aktivator-Inhibitor Systemen" (Wissenschaft & Technik Verlag, Berlin), 56-61 (1996)
E. Schöll, G. Schwarz, M. Patra, F. Prengel and A. Wacker
Oscillatory instabilities and field domain formation in imperfect superlattices
Proceedings of the 9th Int. Conf. on Hot Carriers in Semiconductors, Chicago, ed. by K. Hess, J.P. Leburton, U. Ravaioli verlag = Plenum, New York (), 177-181 (1996)
F. Prengel, M. Patra, G. Schwarz and E. Schöll
Nonlinear dynamics of field domains in weakly disordered superlattices
Proc. 23rd Int. Conf. on the Physics of Semiconductors, Berlin, vol. 3, edited by M. Scheffler and R. Zimmermann (World Scientific, Singapore), 1667-1670 (1996)