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Prof. Thomas Klar

A publication list sorted by "times of citation" can be found at:


Functional photoresists for sub-diffraction stimulated emission depletion lithography
Richard Wollhofen, Bianca Buchegger, Christine Eder, Jaroslaw Jacak, Johannes Kreutzer, and Thomas A. Klar
Optical Materials Express Vol. 7, Issue 7, pp. 2538-2559 (2017)

Raman and Luminescent Spectra of Sulfonated Zn Phthalocyanine Enhanced by Gold Nanoparticles
V. Kavelin, O. Fesenko, H. Dubyna, C. Vidal, T. A. Klar, C. Hrelescu, L. Dolgov
Nanoscale Research Letters

Bioinspired polymer microstructures for directional transport of oily liquids
C. Plamadeala, F. Hischen, R. Friesenecker, R. Wollhofen, J. Jacak, G. Buchberger, E. Heiss, T.A. Klar, W. Baumgartner, J. Heitz
ROYAL SOCIETY OPEN SCIENCE Vol. 4, 160849, (2017)

Bone-forming cells with pronounced spread into the third dimension in polymer scaffolds fabricated by two-photon polymerization
J. Heitz, C. Plamadeala, M. Wiesbauer, P. Freudenthaler, R. Wollhofen, J. Jacak, T. A. Klar, B. Magnus, D. Köstner, A. Weth, W. Baumgartner and R. Marksteiner
Journal of Biomedical Materials Research Part A, March 2017, Volume 105, Issue 3 (pages 891 - 899)


Hybrid Multilayered Plasmonic Nanostars for Coherent Random Lasing
Battulga Munkhbat, Johannes Ziegler, Hannes Pöhl, Christian Wörister, Dmitry Sivun, Markus C. Scharber, Thomas A. Klar and Calin Hrelescu
J. Phys. Chem. C, 2016, 120 (41), pp 23707-23715

Anticorrelation of Photoluminescence from Gold Nanoparticle Dimers with Hot-Spot Intensity
Dmitry Sivun, Cynthia Vidal, Battulga Munkhbat, Nikita Arnold, Thomas A. Klar, Calin Hrelescu
Nano Lett., 2016, 16 (11), pp 7203-7209

Three-dimensional photonic structures on transparent substrates fabricated by two-photon polymerization for use as cell substrates and for wetting experiments
J. Heitz, C. Plamadeala, M. Wiesbauer, P. Freudenthaler, R. Wollhofen, J. Jacak, S. Puthukodan, T. A. Klar, A. Weth, W. Baumgartner, B. Magnus, R. Marksteiner
2016 18th International Conference on Transparent Optical Networks (ICTON)

Frequency domain photoacoustic and fluorescence microscopy
G. Langer, B. Buchegger, J. Jacak, T.A. Klar, T. Berer
Biomedical Opt. Expr. 7 (7), 2692 (2016)
SPIE Digital Library

Plasmonic Nanostars as Efficient Broadband Scatterers for Random Lasing
J. Ziegler, C. Wörister, C. Vidal, C. Hrelescu, T. A. Klar
ACS Photonics 3(6), 919 (2016)

Minimal Spaser Threshold within Electrodynamic Framework: Shape, Size and Modes
N. Arnold, C. Hrelescu, T. A. Klar
Annalen der Physik Vol. 528 (3-4), 295 (2016)

Performance Boost of Organic Light-Emitting Diodes with Plasmonic Nanostars
B. Munkhbat, H. Pöhl, P. Denk, T.A. Klar, M.C. Scharber, C. Hrelescu
Advanced Optical Materials Vol. 4(5), 772 (2016)

Stimulated Emission Depletion Lithography with Mercapto-Functional Polymers
B. Buchegger, J. Kreutzer, B. Plochberger, R. Wollhofen, D, Sivun, J. Jacak, G.J. Schütz, U. Schubert, T.A. Klar
ACS Nano Vol. 10(2), 1954 (2016)


Random Lasing with Systematic Threshold Behavior in Films of CdSe/CdS Core/Thick-Shell Colloidal Quantum Dots
C. Gollner, J. Ziegler, L. Protesescu, D. Dirin, R. Lechner, G. Fritz-Popovski, M. Sytnyk, S. Yakunin, S. Rotter, Amir Abbas Yousefi Amin, C. Vidal, C. Hrelescu, T. Klar, M. Kovalenko, W. Heiss
ACS Nano Vol. 9 (10), 9792 (2015)

Spasers with retardation and gain saturation: electrodynamic description of fields and optical cross-sections
N. Arnold, K. Piglmayer, A.V. Kildishev, T.A. Klar
Optical Materials Express Vol. 5 (11), 2546-2577 (2015)

Optical Plasmons of Individual Gold Nanosponges
C. Vidal, D. Wang, P. Schaaf, C. Hrelescu, T.A. Klar
ACS Photonics Vol. 2(10), 1436-1442 (2015)

Giant cross polarization in a nanoimprinted metamaterial combining a fishnet with its Babinet complement
L. Dong, M.J. Haslinger, J. Danzberger, I. Bergmair, K. Hingerl, C. Hrelescu, T.A. Klar
Optics Express, Vol. 23(15), 19034 (2015)

Gold nanostars for random lasing enhancement

J. Ziegler, M. Djiango, C. Vidal, C. Hrelescu, T.A. Klar
Optics Express, Vol. 23 (12), 15152 (2015)

STED lithography and protein nanoanchors
T. A. Klar, in: "Optically Induced Nanostructures"; Karsten König & Andreas Ostendorf, deGruyter, Berlin 2015
ISBN 978-3-11-033718-1

Antwort auf den Leserbrief von D. W. Pohl zum Artikel „Abbe ausgetrickst“ (Physik Journal Vol. 13, 23-27 (2014))
J. Bewersdorf, C. Eggeling, T. A. Klar
Physik Journal Vol. 14 (3), 14 (2015)

Streptavidin functionalized polymer nanodots fabricated by visible light lithography
C. Wolfesberger, R. Wollhofen, B. Buchegger, J. Jacak, T.A. Klar
Journal of Nanobiotechnology Vol. 13, 27 (2015)


Abbe ausgetrickst
J. Bewersdorf, C. Eggeling, T. A. Klar
Physik Journal Vol. 13 (12), 23-27 (2014)

Sub-Abbe resolution: from STED microscopy to STED lithography
T.A. Klar, R. Wollhofen, J. Jacak
Phys. Scr. T162, 014049 (2014)


Dye-doped spheres with plasmonic semi-shells: Lasing modes and scattering at realistic gain levels
N. Arnold, B. Ding, C. Hrelescu, T. A. Klar
Beilstein J. Nanotechnol. 4, 974–987 (2013)

Nano-Anchors with Single Protein Capacity Produced with STED Lithography
M. Wiesbauer, R. Wollhofen, B. Vasic, K. Schilcher, J. Jacak , T. A. Klar
Nano Lett. 13(11), 5672–5678 (2013)

120 nm resolution and 55 nm structure size in STED-lithography
R. Wollhofen, J. Katzmann, C. Hrelescu, J. Jacak, T.A. Klar
Optics Express 21 (9), 10831-10840 (2013)

Spectral and Directional Reshaping of Fluorescence in Large Area Self-Assembled Plasmonic–Photonic Crystals

B. Ding, C. Hrelescu, N. Arnold, G. Isic, T.A. Klar
Nano Letters 13 (2), 378 - 386 (2013)

Negative permittivity of ZnO thin films prepared from aluminum and gallium doped ceramics via pulsed-laser deposition
M.A. Bodea, G. Sbarcea, G.V. Naik, A. Boltasseva, T.A. Klar, J.D. Pedarnig
Applied Physics A 110, 929-934 (2013)

Multi-photon structuring of native polymers: A case study for structuring natural proteins
M. Gebinoga, J. Katzmann, U. Fernekorn, J. Hampl, F. Weise, M. Klett, A. Läffert, T. A. Klar, A. Schober
Engineering in Life Sciences 13, 368-375 (2013)

Metal Nanostructures and Active Materials
T.A. Klar, in: "Nanomaterials Imaging Techniques, Surface Studies, and Applications",
ed. by O. Fesenko; L. Yatsenko; M. Brodin, Springer, 2013


Spectral tuning of the phosphorescence from metalloporphyrins attached to gold nanorods
M. Djiango, K. Ritter, R. Müller, and T. A. Klar
Optics Express 20 (17), 19374-19381 (2012)

Voltage-Induced Adsorbate Damping of Single Gold Nanorod Plasmons in Aqueous Solution
S. K. Dondapati, M. Ludemann, R. Müller, S. Schwieger, A. Schwemer, B.
Händel, D. Kwiatkowski, M. Djiango, E. Runge, and T. A. Klar
Nano Lett. 12 (3), 1247-1252 (2012)

Optical sensing of small ions with colloidal nanoparticles
D. Jimenez de Aberasturi , J.-M. Montenegro , I. Ruiz de Larramendi , T. Rojo , T. A. Klar , R. A. Alvarez-Puebla , L. M. Liz-Marzán, W. J. Parak
Chemistry of Materials 24 (5), 738-745 (2012)

Fluorophore-Metal Nanoparticle Interactions and Their Applications in Biosensing
T.A. Klar and J. Feldmann
in: Complex-shaped Metal Nanoparticles: Bottom-Up Syntheses and Applications, Chap. 12 (ed. by T.K. Sau and A.L. Rogach; Wiley), 2012


Numerical modeling of active plasmonic metamaterials
L. J. Prokopeva , J. Trieschmann, T.A. Klar, A. V. Kildishev
Proceedings of SPIE 8172, 81720B (2011)


Label-free Biosensing Based on Single Gold Nanostars as Plasmonic Transducers
S. K. Dondapati, T. K. Sau, C. Hrelescu, T. A. Klar, F. D. Stefani, and J. Feldmann
ACS Nano 4(11), 6318 (2010)

DNA Melting in Gold Nanostove Clusters
C. Hrelescu, J. Stehr, M. Ringler, R. A. Sperling, W. J. Parak, T. A. Klar, and J. Feldmann
J. Phys. Chem. C 114, 7401 (2010)
Properties and Applications of Nonspherical Colloidal Noble Metal Nanoparticles
T.K. Sau, A.L. Rogach, F. Jäckel, T.A. Klar, J. Feldmann
Advanced Materials 22, 1805 (2010)
Optical properties of InN grown on Si(111) substrate
E. Sakalauskas, P. Schley, J. Räthel, T. A. Klar, R. Müller, J. Pezoldt, K. Tonisch, J. Grandal, M. A. Sanchez-Garcia, E. Calleja, A. Vilalta-Clemente, P. Ruterana, and R. Goldhahn
physica status solidi a 207, 1066 (2010)

Long-Range Fluorescence Quenching by Gold Nanoparticles in a Sandwich Immunoassay for Cardiac Troponin T
S. Mayilo, M. A. Kloster, M. Wunderlich, A. Lutich, T. A. Klar, A. Nichtl, K. Kürzinger, F. D. Stefani, J. Feldmann
Nano Letters 9(12), 4558 (2009)
Feature Article: Energy transfer with semiconductor nanoparticles
A. L. Rogach, T. A. Klar, J. M. Lupton, A. Meijerink, J. Feldmann
Journal of Materials Chemistry 19, 1208 (2009)
Label free optical sensor for Avidin based on single gold nanoparticles functionalized with aptamers
F. J. Hernandez, S. K. Dondapati, V. C. Ozalp, A. Pinto, C. O'Sullivan, T. A. Klar, I. Katakis
Journal of Biophotonics 2, 227 (2009)
Competitive Homogeneous Digoxigenin Immunoassay Based on Fluorescence Quenching by Gold Nanoparticles
S. Mayilo, B. Ehlers, M. Wunderlich, T. A. Klar, H.-P. Josel, D. Heindl, A. Nichtl, K. Kürzinger, and J. Feldmann
Analytica Chimica Acta 646, 119 (2009)

Energy transfer with semiconductor nanocrystals
A.L. Rogach, T.A. Klar, J.M. Lupton, A. Meijerink, J. Feldmann
J. Mat. Chem. 19, 1208 (2009)

Shaping emission spectra of fluorescent molecules with single plasmonic nanoresonators
M. Ringler, A. Schwemer, M. Wunderlich, A. Nichtl, K. Kürzinger, T. A. Klar, and J. Feldmann
Physical Review Letters 100, 203002 (2008)
Gold NanoStoves for Microsecond DNA Melting Analysis
J. Stehr, C. Hrelescu, R. A. Sperling, G. Raschke, M. Wunderlich, A. Nichtl, D. Heindl, K. Kürzinger, W. J. Parak, T. A. Klar, J. Feldmann
Nano Letters 8 (2), 619 (2008)
Fluorescence enhancement in hot spots of AFM-designed gold nanoparticle sandwiches
A. Bek, R. Jansen, M. Ringler, S. Mayilo, T. A. Klar, J. Feldmann
Nano Letters 8 (2), 485 (2008)
Self-Assembled Binary Superlattices of CdSe and Au Nanocrystals and their Fluorescence Properties
E. Shevchenko, M. Ringler, A. Schwemer, D. V. Talapin, T. A. Klar, A. L. Rogach, J. Feldmann, P. Alivisatos
Journal of the American Chemical Society 130, 3274 (2008)
Charge separation in type II tunneling structures of close-packed CdTe and CdSe nanocrystals
D. Gross, A. S. Susha, T. A. Klar, E. Da Como, A. L. Rogach, Jochen Feldmann
Nano Letters 8, 1482 (2008)
Type-I and Type-II Nanoscale Heterostructures Based on CdTe Nanocrystals: A Comparative Study
D. Dorfs, T. Franzl, R. Osovsky, M. Brumer, E. Lifshitz, T. A. Klar, and A. Eychmüller
Small 4 (8), 1148 (2008)
Energy Transfer in Solution-Based Clusters of CdTe Nanocrystals Electrostatically Bound by Calcium Ions
Sergiy Mayilo, Jan Hilhorst, Andrei S. Susha, Cornelia Ho¨hl, Thomas Franzl, Thomas A. Klar, Andrey L Rogach, and Jochen Feldmann
J. Phys. Chem C 112, 14589 (2008)
Photodoping with CdSe nanocrystals as a tool to probe trap state distributions in C60 crystals
A. Biebersdorf, R. Dietmüller, A. Ohlinger, T. A. Klar, J. Feldmann, D. V. Talapin, H. Weller
Applied Physics B 93, 239 (2008)
Streptavidin Reduces Oxygen Quenching of Biotinylated Ruthenium(II) and Palladium(II) Complexes
T. Soller, M. Ringler, M. Wunderlich, T. A. Klar, J. Feldmann, H.-P. Josel, J. Koci, Y. Markert, A. Nichtl, K. Kürzinger
Journal of Physical Chemistry B 112, 12824 (2008)

Moving nanoparticles with Raman scattering
M. Ringler, T. A. Klar, A. Schwemer, J. Stehr, G. Raschke, Stefan Funk,
Martin Borowski, A. Nichtl, K. Kürzinger, R. T. Phillips, and J. Feldmann,
Nano Letters 7, 2753 (2007)
Radiative and Nonradiative Rates of Phosphors Attached to Gold Nanoparticles
T. Soller, M. Ringler, M. Wunderlich, T. A. Klar, J. Feldmann, H.-P. Josel, Y. Markert, A. Nichtl and K. Kürzinger
Nano Letters 7 (7), 1941 (2007)
Bright white light emission from semiconductor nanocrystals: by chance and by design
Sameer Sapra, Sergiy Mayilo, Thomas A. Klar, Andrey L. Rogach, Jochen Feldmann
Advanced Materials 19, 569-572 (2007)
Aqueous Synthesis of Thiol-Capped CdTe Nanocrystals: State-of-the-Art
Andrey L. Rogach, Thomas Franzl, Thomas A. Klar, Jochen Feldmann,Nikolai Gaponik,
Vladimir Lesnyak, Alexey Shavel, Alexander Eychmüller, Yuri P. Rakovich John F. Donegan,
J. Phys Chem C 111, 14628-14637 (2007)
CdSe:Te Nanocrystals: Band-Edge versus Te-Related Emission
T. Franzl, J. Müller, T. A. Klar, A. L. Rogach, J. Feldmann, D. V. Talapin, H. Weller
J. Phys Chem C, 111 (7), 2974 (2007)
Thin Metal-Dielectric Nanocomposites with a Negative Index of Refraction
A. V. Kildishev, T. A: Klar, V. P. Drachev, V. M. Shalaev
in: Advances in Nano-Optics and Nano-Photonics, Vol. 2, (ed. by S. Kawata, V. Shalaev; Elsevier), 2007
Biosensing with Plasmonic Nanoparticles
T. A. Klar
in: Advances in Nano-Optics and Nano-Photonics, Vol. 2, (ed. by S. Kawata, V. Shalaev; Elsevier), 2007


Negative index material combining magnetic resonators with metal films
U. K. Chettiar, A. V. Kildishev, T. A. Klar, and V. M. Shalaev
Optics Express 14, 7872 (2006)
Negative-Index Metamaterials: Going Optical
Thomas A. Klar, Alexander V. Kildishev, Vladimir P. Drachev, and Vladimir M. Shalaev
IEEE Journal of Selected Topics in Quantum Electronics, 12, 1106 (2006)
Semiconductor nanocrystals photosensitize C60 microcrystals
A. Biebersdorf, R. Dietmüller, A. S. Susha, A. L. Rogach, S. Poznyak, D. V. Talapin, H. Weller, T. A: Klar, J. Feldmann
Nano Letters 6, 1559 (2006)


Gold nanoparticles quench fluorescence by phase induced radiative rate suppression
E. Dulkeith, M. Ringler, T. A: Klar, J. Feldmann,
A. Munoz Javier, W. J. Parak
Nano Letters 5, 585 (2005)
Reply to "Comment on 'Gold Nanoshells Improve Single Nanoparticle Molecular Sensors'"
G. Raschke, S. Brogl, A. S. Susha, A. L. Rogach, T. A Klar and J. Feldmann,
B. Fieres, N. Petkov and T. Bein, A. Nichtl and K. K�rzinger
Nano Letters 5, 811 (2005)
Spectroscopy of Organic / Metal-Nanoparticle Hybrid Systems
T. A. Klar
Physics, Chemistry and Applications of Nanostructures, (ed. by V. E: Borisenko, S. V: Gaponenko, V. S: Gurin; World Scientific), 2005
Super efficient exciton funneling in layer-by-layer semiconductor nanocrystal structures
T. A. Klar, T. Franzl, A. L. Rogach, and J. Feldmann
Advanced Materials 17, (Research News)769 (2005)
High rate unidirectional energy transfer in directly assembled CdTe nanocrystal bilayers
T. Franzl, A. Shavel, A. L. Rogach, N. Gaponik, T. A. Klar, A. Eychm�ller, and J. Feldmann
Small 1, 392 (2005)


Plasmon emission in photoexcited gold nanoparticles
E. Dulkeith, T. Niedereichholz, T.A. Klar, J. Feldmann,
G. von Plessen, D. I. Gittins, K. S. Mayya, and F. Caruso
Phys. Rev. B 70 205424 (2004)
Gold nanoshells improve single nanoparticle molecular sensors
G. Raschke, S. Brogl, A. S. Susha, A. L. Rogach, T. A Klar and J. Feldmann,
B. Fieres, N. Petkov and T. Bein, A. Nichtl and K. Kürzinger
Nano Letters 4, 1853 (2004)
Sub-microsecond molecular thermometry using thermal spin flips
J. Stehr, J. M. Lupton, M. Reufer, G. Raschke, T. A. Klar, and J. Feldmann
Advanced Materials 16 2170 (2004)
Exciton Recycling in Graded Gap Nanocrystal Structures
T. Franzl, T. A. Klar, S. Schietinger, A. L. Rogach and J. Feldmann
Nano Letters 4 1599 (2004)
Fast Energy Transfer in Layer-by-Layer Assembled CdTe Nanocrystal Bilayers
T. Franzl, D. S. Koktysh,T. A. Klar, A. L. Rogach, J. Feldmann,
N. Gaponik
Appl. Phys. Lett., 84, 2904 (2004)
Time Resolved Fluorescence Measurements of Fluorophores Close to Metal Nanoparticles
T. A. Klar, E. Dulkeith, J. Feldmann
Topics in Fluorescence Spectroscopy, Vol. 8 (ed. by C. D. Geddes, J. R. Lakowicz, Kluwer, 2004)
Optical Properties of planar metallo-dielectric photonic crystals
A. Christ, S. Linden, T. Zentgraf, K. Schubert, D. Nau, S. G. Tikhodeev, A. Gippius, J. Kuhl, F. Schindler, A. W. Holleitner, J. Stehr, J. Crewett, J. Lupton, T. Klar, U. Scherf, J. Feldmann, C. Dahem, G. von Plessen, H. Giessen
Photonic Crystals (ed. by K. Busch, S. Lölkes, R. B. Wehrspohn, H. Föll, Wiley, 2004)


A low threshold polymer laser based on metallic nanoparticle gratings
J. Stehr, J. Crewett, F. Schindler, R. Sperling,G. von Plessen, U. Lemmer, J. M. Lupton, T. A. Klar, J. Feldmann,
A. W. Holleitner, M. Forster, and U. Scherf
Advanced Materials 15 1726 (2003)
Biomolecular Recognition Based on Single Gold Nanoparticle Light Scattering
G. Raschke, S. Kowarik, T. Franzl, C. Sönnichsen, T. A. Klar, J. Feldmann,
A. Nichtl, and K. Kürzinger
Nano Letters 3, 935 (2003)
Creating λ/3 focal holes with a Mach-Zehnder interferometer
E. Engel, N. Huse, T.A. Klar, and S.W. Hell
Appl. Phys. B 77, 11-17, (2003)


Fluorescence Quenching of Dye Molecules near Gold Nanoparticles: Radiative and Nonradiative Effects
E. Dulkeith, A. C. Morteani, T. Niedereichholz, T. A. Klar, J. Feldmann,
S.A. Levi, F. C. J. M. van Veggel, D. N. Reinhoudt, M. Möller, D. I. Gittins
Phys. Rev. Lett. 89, 203002 (2002)

Electrically controlled light scattering with metal nanoparticles
J. Müller, C. Sönnichsen, H. von Poschinger, G. von Plessen, T. A. Klar, J. Feldmann
Appl. Phys. Lett. 81, 171 (2002)


Breaking Abbe`s diffraction limit in fluorescence microscopy with stimulated emission depletion beams of various shapes
T.A. Klar, E. Engel, and S.W. Hell
Phys. Rev. E 64, 066613, (2001)
Stimulated emission depletion microscopy with an offset depleting beam
T.A. Klar, M. Dyba, and S.W. Hell
Appl. Phys. Lett. 78, 393-395, (2001)

Progress in Stimulated Emission Depletion Microscopy
T.A. Klar
Dissertation Univ. Heidelberg, Shaker Verlag, Aachen, (2001), ISBN: 3-8265-8972-6


Ultrafast dynamics microscopy
M. Dyba, T.A. Klar, S. Jakobs and S.W. Hell
Appl. Phys. Lett. 77, 597-589, (2000)
Fluorescence microscopy with diffraction resolution barrier broken by stimulated emission
T. A. Klar, S. Jakobs, M. Dyba, A. Egner and S. W. Hell
Proc. Natl. Acad. Sci. USA (PNAS), 97, 8206-8210, (2000)


Subdiffraction resolution in far-field fluorescence microscopy
T. A. Klar and S. W. Hell
Optics Letters 24, 954, (1999)


Surface-Plasmon Resonances in Single Metallic Nanoparticles
T. Klar, M. Perner, S. Grosse, G. von Plessen, W. Spirkl and J. Feldmann
Phys. Rev. Lett. 80, 4249 (1998)
Homogeneous Line Widths of Surface Plasmons in Gold Nanoparticles measured by Femtosecond Pump-And-Probe and Near-Field Optical Spectroscopy
M. Perner, T. Klar, S. Grosse, U. Lemmer, G. von Plessen, W. Spirkl and J. Feldmann
J. of Luminesc. 76, 181, (1998)


Optical Near-Field Measurements on a Single Gold Nanoparticle
T. Klar, M. Perner, S. Grosse, G. von Plessen, W. Spirkl, U. Lemmer, J. Feldmann
in: International School of Atomic and Molecular Spectroscopy:
Ultrafast Dynamics of Quantum Systems: Physical Processes and Spectroscopic Techniques
Ed.: B. Di Bartolo, J. Collins, G. Gambarota
Erice, Italy, 1997