Time-of-Flight secondary ion mass spectrometry (TOF-SIMS)

What can a time-of-flight secondary ion mass spectrometer do?


The abbreviation TOF-SIMS is an acronym for the combination of secondary ion mass spectrometry (SIMS) with a time-of-flight (TOF) mass analyser.

The sample to be analysed is bombarded with a primary ion beam with a kinetic energy of a few keV. The ions collide with the surface, releasing their energy and generating a shock cascade. This leads to the detachment of individual surface atoms and molecules, or of clusters and fragments. Some of these secondary particles are present as ions and can be analysed separately according to their mass.

The time-of-flight principle is used for mass separation. Particles of different mass reach different velocities at the same acceleration voltage. The accelerated particles travel a certain distance in the analyser and reach the detector at different times, the lighter the particle the faster it is. Since times can be measured with very high accuracy, this method achieves a very high spectral mass resolution and gives a very accurate picture of the sample surface and its composition. The procedure is shown in the film in Figure 1.

With this method one achieves a spatial resolution < 100 nm, with a surface sensitivity to the first 1-2 layers of the sample. Depth profiles with a depth accuracy of < 1nm and a measurement speed of up to 10µm/h are achievable.

With the Integrated Focused Ion Beam Source (FIB) it is possible to cleanly generate cross-sectional areas of highly porous surfaces and layered structures with strongly varying ion etch rates and then to investigate these cross-sections. The creation of such a crater is shown in the film in Figure 2. The crater has a size of about 30µmx15µm with a depth of about 20µm. Duration about 6h.

At ICAN we use the TOF.SIMS 5 from Ion-TOF.

© ICAN 2019
© ICAN 2019

Figure 1: Illustration of the Time-of-Flight principle. Animation provided by the Ion-TOF GmbH.

Watch the video
© ICAN 2019

Figure 2: Secondary electron images of the creation of an FIB crater in doped diamond to examine the exposed cross-sectional area. Size of the crater about 30µm x 15µm x 20µm. Duration about 6h.

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Depth profiling

Figure 3 shows the mass spectrum of a europium-doped aluminium oxide layer on silicon on a linear and logarithmic scale. Since this technique measures differences in the time of flight, the conversion of this time scale into a mass scale is very important. As a result, the evaluation of the data often takes considerably more time than its generation.
The logarithmic plot shows the enormous sensitivity of the technique. It is possible to measure doping concentrations down to the ppm range.

Figure 4 shows the intensity curve of the aluminium and europium signal as a function of the sputtering time. Between the recording of 2 mass spectra, the surface was bombarded with fast oxygen molecules to expose deeper atomic layers. In this way, a depth profile of the material is generated. In this example, it can be seen that the europium concentration increases towards the depth, has a maximum at the interface to the silicon and then decreases again towards the silicon.
There are several reasons why the transition from Al2O3 to silicon is not arbitrarily sharp. In this case, the high roughness of the Al2O3 surface was largely responsible for this. The aluminium oxide layer examined was about 8 µm thick.

TOF-Sims is not a technique to directly determine total concentration with one measurement. The reason for this is that the removal rates and ionisation probability of a given element/molecule strongly depends on the matrix in which it is located.
For example, a certain amount of doping of boron in silicon would give a significantly different signal intensity than the same amount of boron in diamond. Therefore, ideally one needs a reference sample for each measurement, with the same matrix, where the concentration of the dopant is known.

© ICAN 2019

Figure 3: Mass spectrum of europium-doped alumina on linear and logarithmic scales.

© ICAN 2019

Figure 4: Course of the intensity of the Al+ and Eu+ signals as a function of the ion etching time (etched with oxygen). The thickness of the Al2O3 layer was approx. 8 µm.

Ihr Ansprechpartner für das TOF-SIMS:

apl. Prof. Dr. rer. nat. Nils Hartmann

ICAN - Interdisciplinary Center for Analytics on the Nanoscale

Address
NETZ | Raum U1.13 | Carl-Benz-Str. 199
47057 Duisburg
Room
LN U1.13
Phone
+49 203 379 8033
Fax
+49 203 379 8046
E-Mail
nils.hartmann@uni-due.de
Website
http://www.uni-due.de/ican

Functions

  • Wissenschaftliche/r Mitarbeiter/in, Center for Nanointegration Duisburg-Essen

  • apl. Professor/in, Physikalische Chemie


The following publications are listed in the online university bibliography of the University of Duisburg-Essen. Further information may also be found on the person's personal web pages.

    Journal articles

  • Bera, Anupam; Bullert, Denise; Linke, Matthias; Franzka, Steffen; Hagemann, Ulrich; Hartmann, Nils; Hasselbrink, Eckart
    Interaction of 2-propanol with predominantly SrO- and TiO2-terminated SrTiO3(100) surfaces studied by vibrational sum frequency spectroscopy
    In: Catalysis Science and Technology Vol. 13 (2023) Nr. 17, pp. 4988 - 4995
    Online Full Text: dx.doi.org/ (Open Access)
  • Wittmar, Alexandra; Vigneswaran, Thaarmikaa; Ranković, Nikola; Hagemann, Ulrich; Hartmann, Nils; Martínez-Hincapié, Ricardo; Čolić, Viktor; Ulbricht, Mathias
    N-Doped porous carbons obtained from chitosan and spent coffee as electrocatalysts with tuneable oxygen reduction reaction selectivity for H₂O₂ generation
    In: RSC Advances Vol. 13 (2023) Nr. 33, pp. 22777 - 22788
    Online Full Text: dx.doi.org/ (Open Access)
  • Dreyer, Maik; Hagemann, Ulrich; Heidelmann, Markus; Budiyanto, Eko; Cosanne, Nicolas; Friedel Ortega, Klaus; Najafishirtari, Sharif; Hartmann, Nils; Tüysüz, Harun; Behrens, Malte
    Beneficial Effects of Low Iron Contents on Cobalt‐Containing Spinel Catalysts in the Gas Phase 2‐Propanol Oxidation
    In: ChemCatChem Vol. 14 (2022) Nr. 18, e202200472
    Online Full Text: dx.doi.org/ (Open Access)
  • Hartmann, Nils
    Auf Spurensuche im Nanokosmos : Katalyseforschung im Interdisciplinary Center for Analytics on the Nanoscale
    In: Unikate: Berichte aus Forschung und Lehre (2021) Nr. 57: Katalyse : Alles andere als oberflächlich, pp. 139 - 148
    Online Full Text: dx.doi.org/ Online Full Text (Open Access)
  • Omambac, Karim; Petrović, Marin; Bampoulis, Pantelis; Brand, Christian; Kriegel, Marko A.; Dreher, Pascal; Janoschka, David; Hagemann, Ulrich; Hartmann, Nils; Valerius, Philipp; Michely, Thomas; Meyer zu Heringdorf, Frank; Horn-von Hoegen, Michael
    Segregation-Enhanced Epitaxy of Borophene on Ir(111) by Thermal Decomposition of Borazine
    In: ACS Nano Vol. 15 (2021) Nr. 4, pp. 7421 - 7429
    Online Full Text: dx.doi.org/
  • Dreyer, Maik; Cruz, Daniel; Hagemann, Ulrich; Zeller, Patrick; Heidelmann, Markus; Salamon, Soma; Landers, Joachim; Rabe, Anna; Friedel Ortega, Klaus; Najafishirtari, Sharif; Wende, Heiko; Hartmann, Nils; Knop-Gericke, Axel; Schlögl, Robert; Behrens, Malte
    The Effect of Water on the 2-Propanol Oxidation Activity of Co-Substituted LaFe₁−CoₓO₃ Perovskites
    In: Chemistry - A European Journal Vol. 27 (2021) Nr. 68: Special Issue: Contemporary Challenges in Catalysis, pp. 17127 - 17144
    Online Full Text: dx.doi.org/ (Open Access)
  • Maculewicz, Franziska; Wagner, Thorsten; Arzi, Khaled; Hartmann, Nils; Weimann, Nils; Schmechel, Roland
    Experimental evidence for the separation of thermally excited bipolar charge carries within a p-n junction : A new approach to thermoelectric materials and generators
    In: Journal of Applied Physics Vol. 125 (2019) Nr. 18, pp. 184502
    Online Full Text: dx.doi.org/
  • Beyer, Christopher; Dohmen, Ralf; Rogalla, Detlef; Becker, Hans-Werner; Marquardt, Katharina; Vollmer, Christian; Hagemann, Ulrich; Hartmann, Nils; Chakraborty, Sumit
    Lead diffusion in CaTiO₃ : A combined study using Rutherford backscattering and TOF-SIMS for depth profiling to reveal the role of lattice strain in diffusion processes
    In: American Mineralogist Vol. 104 (2019) Nr. 4, pp. 557 - 568
    Online Full Text: dx.doi.org/
  • Bahners, Thomas; Gebert, Beate; Prager, Andrea; Hartmann, Nils; Hagemann, Ulrich; Gutmann, Jochen Stefan
    UV-light assisted patterned metallization of textile fabrics
    In: Applied Surface Science Vol. 436 (2018) pp. 1093 - 1103
    Online Full Text: dx.doi.org/
  • Waag, Friedrich; Gökce, Bilal; Kalapu, Chakrapani; Bendt, Georg; Salamon, Soma; Landers, Joachim; Hagemann, Ulrich; Heidelmann, Markus; Schulz, Stephan; Wende, Heiko; Hartmann, Nils; Behrens, Malte; Barcikowski, Stephan
    Adjusting the catalytic properties of cobalt ferrite nanoparticles by pulsed laser fragmentation in water with defined energy dose
    In: Scientific Reports Vol. 7 (2017) Nr. 1, pp. 13161
    Online Full Text: dx.doi.org/ Online Full Text (Open Access)
  • Lau, Marcus; Straube, Thomas; Aggarwal, A. Vikas; Hagemann, Ulrich; De Oliveira Viestel, Bernardo; Hartmann, Nils; Textor, Torsten; Lutz, Harald; Gutmann, Jochen Stefan; Barcikowski, Stephan
    Gradual modification of ITO particle's crystal structure and optical properties by pulsed UV laser irradiation in a free liquid jet
    In: Dalton Transactions Vol. 46 (2017) Nr. 18, pp. 6039 - 6048
    Online Full Text: dx.doi.org/
  • Schade, Martin; Franzka, Steffen; Hartmann, Nils
    Laser-Induced Functionalization of Organo/Carbon Interfaces for Selective Adsorption of Au Nanoparticles in Microsized Domains
    In: Langmuir Vol. 33 (2017) Nr. 35, pp. 8686 - 8692
    Online Full Text: dx.doi.org/
  • Rytlewski, Piotr; Bahners, Thomas; Polewski, Filip; Gebert, Beate; Gutmann, Jochen Stefan; Hartmann, Nils; Hagemann, Ulrich; Moraczewski, Krzysztof
    Laser-induced surface activation of biocomposites for electroless metallization
    In: Surface and Coatings Technology Vol. 311 (2017) pp. 104 - 112
    Online Full Text: dx.doi.org/
  • Schade, Linda; Franzka, Steffen; Thomas, Marc; Hagemann, Ulrich; Hartmann, Nils
    Resonant laser processing of nanoparticulate Au/TiO2 films on glass supports : Photothermal modification of a photocatalytic nanomaterial
    In: Surface Science Vol. 650 (2016) pp. 57 - 63
    Online Full Text: dx.doi.org/
  • Schade, Lina; Franzka, Steffen; Biener, Monica; Biener, Jürgen; Hartmann, Nils
    Surface-enhanced Raman spectroscopy on laser-engineered ruthenium dye-functionalized nanoporous gold
    In: Applied Surface Science Vol. 374 (2016) pp. 19 - 22
    Online Full Text: dx.doi.org/
  • Schade, Martin; Franzka, Steffen; Cappuccio, Franco; Peinecke, Volker; Heinzel, Angelika; Hartmann, Nils
    Photothermally induced bromination of carbon/polymer bipolar plate materials for fuel cell applications
    In: Applied Surface Science Vol. 336 (2015) pp. 85 - 88
    Online Full Text: dx.doi.org/
  • Thomas, Marc; Gajda, Martyna; Naini, Crispin Amiri; Franzka, Steffen; Ulbricht, Mathias; Hartmann, Nils
    Poly(N,N-dimethylaminoethyl methacrylate) Brushes : pH-Dependent Switching Kinetics of a Surface-Grafted Thermoresponsive Polyelectrolyte
    In: Langmuir Vol. 31 (2015) Nr. 49, pp. 13426 - 13432
    Online Full Text: dx.doi.org/
  • Schade, Lina; Franzka, Steffen; Dzialkowski, Kevin; Hardt, Sebastian; Wiggers, Hartmut; Reichenberger, Sven; Wagener, Philipp; Hartmann, Nils
    Resonant photothermal laser processing of hybrid gold/titania nanoparticle films
    In: Applied Surface Science Vol. 336 (2015) pp. 48 - 52
    Online Full Text: dx.doi.org/
  • Schade, Martin; Franzka, Steffen; Schröter, Anja; Cappuccio, Franco; Gajda, Martyna; Peinecke, Volker; Heinzel, Angelika; Hartmann, Nils
    Chemical functionalization of carbon/polymer bipolar plate materials via oxygen plasma activation and subsequent silanization
    In: Surface and Coatings Technology Vol. 240 (2014) pp. 255 - 260
    Online Full Text: dx.doi.org/
  • Schröter, Anja; Franzka, Steffen; Hartmann, Nils
    Photothermal Laser Fabrication of Micro- and Nanostructured Chemical Templates for Directed Protein Immobilization
    In: Langmuir Vol. 30 (2014) Nr. 49, pp. 14841 - 14848
    Online Full Text: dx.doi.org/
  • Schade, Lina; Franzka, Steffen; Mathieu, Mareike; Biener, Monika M.; Biener, Jürgen; Hartmann, Nils
    Photothermal laser microsintering of nanoporous gold
    In: Langmuir Vol. 30 (2014) Nr. 24, pp. 7190 - 7197
    Online Full Text: dx.doi.org/
  • Schröter, Anja; Mathieu, Mareike; Franzka, Steffen; Feydt, Jürgen; Irsen, Stephan; Hartmann, Nils
    Fabrication of chemical templates via selective laser-induced desorption of hexadecanethiol self-assembled monolayers
    In: Applied Surface Science Vol. 278, Laser materials processing for micro and nano applications, E-MRS 2012 Symposium V (2013) pp. 57 - 61
    Online Full Text: dx.doi.org/
  • Behrenberg, Dennis; Franzka, Steffen; Petermann, Nils; Wiggers, Hartmut; Hartmann, Nils
    Fabrication of periodic surface topographies via sequential photothermal laser microsintering of silicon nanoparticle films
    In: Applied Surface Science Vol. 278 (2013) pp. 278 - 283
    Online Full Text: dx.doi.org/
  • Schröter, Anja; Franzka, Steffen; Koch, Jürgen; Chichkov, Boris N.; Ostendorf, Andreas; Hartmann, Nils
    Femtosecond-laser processing of nitrobiphenylthiol self-assembled monolayers
    In: Applied Surface Science Vol. 278: Laser materials processing for micro and nano applications, E-MRS 2012 Symposium V (2013) pp. 43 - 46
    Online Full Text: dx.doi.org/
  • Amiri, Crispin; Thomas, Marc; Franzka, Steffen; Frost, Sven; Ulbricht, Mathias; Hartmann, Nils
    Hofmeister Effect of Sodium Halides on the Switching Energetics of Thermoresponsive Polymer Brushes
    In: Macromolecular Rapid Communications Vol. 34 (2013) Nr. 5, pp. 417 - 422
    Online Full Text: dx.doi.org/
  • Meseth, Martin; Lamine, Kais; Dehnen, Martin; Kayser, Sven; Brock, Wolfgang; Behrenberg, Dennis; Orthner, Hans; Elsukova, Anna; Hartmann, Nils; Wiggers, Hartmut; Hülser, Tim-Patrick; Nienhaus, Hermann; Benson, Niels; Schmechel, Roland
    Laser-doping of crystalline silicon substrates using doped silicon nanoparticles
    In: Thin Solid Films Vol. 548 (2013) pp. 437 - 442
    Online Full Text: dx.doi.org/
  • Schade, Lina; Franzka, Steffen; Hardt, Sebastian; Wiggers, Hartmut; Hartmann, Nils
    Sintering of thin titanium dioxide nanoparticle films via photothermal processing with ultraviolet continuous-wave lasers
    In: Applied Surface Science Vol. 278, Laser materials processing for micro and nano applications, E-MRS 2012 Symposium V (2013) pp. 336 - 340
    Online Full Text: dx.doi.org/
  • Wiggers, Hartmut; Haep, Stefan; Gutmann, Jochen Stefan; Barcikowski, Stephan; Wagener, Philipp; Hartmann, Nils; Ulbricht, Mathias
    VerNETZungen : Integrierte Nanopartikel-Synthese und -Verarbeitung im NanoEnergieTechnikZentrum
    In: Unikate: Berichte aus Forschung und Lehre (2013) Nr. 43: NanoEnergie – Materialentwicklung für eine nachhaltige Energieversorgung, pp. 26 - 41
    Online Full Text: dx.doi.org/ Online Full Text (Open Access)
  • Behrenberg, Dennis; Franzka, Steffen; Petermann, Nils; Wiggers, Hartmut; Hartmann, Nils
    Photothermal laser processing of thin silicon nanoparticle films : On the impact of oxide formation on film morphology
    In: Applied Physics A: Materials Science and Processing Vol. 106 (2012) Nr. 4, pp. 853 - 861
    Online Full Text: dx.doi.org/
  • Schröter, Anja; Kalus, Mark; Hartmann, Nils
    Substrate-mediated effects in photothermal patterning of alkanethiol self-assembled monolayers with microfocused continuous-wave lasers
    In: Beilstein Journal of Nanotechnology Vol. 3 (2012) Nr. 1, pp. 65 - 74
    Online Full Text: dx.doi.org/ (Open Access)
  • Amiri, Crispin; Franzka, Steffen; Frost, Sven; Ulbricht, Mathias; Hartmann, Nils
    Probing the intrinsic switching kinetics of ultrathin thermoresponsive polymer brushes
    In: Angewandte Chemie International Edition Vol. 50 (2011) Nr. 19, pp. 4513 - 4516
    Online Full Text: dx.doi.org/
  • Scheres, Luc; Klingebiel, Benjamin; ter Maat, Jurjen; Giesbers, Marcel; Jong, Hans de; Hartmann, Nils; Zuilhof, Han
    Micro- and nanopatterning of functional organic monolayers on oxide-free silicon by laser-induced photothermal desorption
    In: Small Vol. 6 (2010) Nr. 17, pp. 1918 - 1926
    Online Full Text: dx.doi.org/
  • Franzka, Steffen; Koch, Jürgen; Chichkov, Boris N.; Hartmann, Nils
    Nonlinear femtosecond laser processing of alkylsiloxane monolayers on surface-oxidized silicon substrates
    In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces, and Films Vol. 28 (2010) Nr. 4, pp. 814 - 817
    Online Full Text: dx.doi.org/
  • Klingebiel, Benjamin; Scheres, Luc; Franzka, Steffen; Zuilhof, Han; Hartmann, Nils
    Photothermal micro- and nanopatterning of organic/silicon interfaces
    In: Langmuir Vol. 26 (2010) Nr. 9, pp. 6826 - 6831
    Online Full Text: dx.doi.org/
  • Klingebiel, Benjamin; Schröter, Anja; Franzka, Steffen; Hartmann, Nils
    Photothermally induced bromination and decomposition of alkylsiloxane monolayers on surface-oxidized silicon substrates
    In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces, and Films Vol. 28 (2010) Nr. 4, pp. 834 - 837
    Online Full Text: dx.doi.org/
  • Mathieu, Mareike; Franzka, Steffen; Koch, Jürgen; Chichkov, Boris N.; Hartmann, Nils
    Self-assembled organic monolayers as high-resolution resists in rapid nonlinear processing with single femtosecond laser pulses
    In: Applied Physics A: Materials Science and Processing Vol. 101 (2010) Nr. 3, pp. 461 - 466
    Online Full Text: dx.doi.org/
  • Mathieu, Mareike; Hartmann, Nils
    Sub-wavelength patterning of organic monolayers via nonlinear processing with continuous-wave lasers
    In: New Journal of Physics (NJP) Vol. 12 (2010) pp. 125017
    Online Full Text: dx.doi.org/ Online Full Text (Open Access)
  • Mathieu, Mareike; Schunk, Daniel; Franzka, Steffen; Mayer, Christian; Hartmann, Nils
    Temporal stability of photothermally fabricated micropatterns in supported phospholipid multilayers
    In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces, and Films Vol. 28 (2010) Nr. 4, pp. 953 - 957
    Online Full Text: dx.doi.org/
  • Mathieu, Mareike; Schunk, Daniel; Franzka, Steffen; Mayer, Christian; Hasselbrink, Eckart; Hartmann, Nils
    Direct Laser Patterning of Soft Matter: Photothermal Processing of Supported Phospholipid Multilayers with Nanoscale Precision
    In: Small Vol. 5 (2009) Nr. 18, pp. 2099 - 2104
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Klingebiel, Benjamin; Balgar, Thorsten; Franzka, Steffen; Hasselbrink, Eckart
    Laser-induced local dehydroxylation on surface-oxidized silicon substrates: mechanistic aspects and prospects in nanofabrication
    In: Applied Physics A: Materials Science and Processing Vol. 94 (2009) Nr. 1, pp. 95 - 103
    Online Full Text: dx.doi.org/
  • Klingebiel, Benjamin; Schröter, Anja; Franzka, Steffen; Hartmann, Nils
    Photothermally induced microchemical functionalization of organic monolayers
    In: ChemPhysChem Vol. 10 (2009) Nr. 12, pp. 2000 - 2003
    Online Full Text: dx.doi.org/
  • Mathieu, Mareike; Friebe, Alexander; Franzka, Steffen; Hartmann, Nils
    Surface-initiated polymerization on laser-patterned templates : morphological scaling of nanoconfined polymer brushes
    In: Langmuir Vol. 25 (2009) Nr. 20, pp. 12393 - 12398
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Franzka, Steffen; Koch, J; Ostendorf, A; Chichkov, B. N.
    Subwavelength patterning of alkylsiloxane monolayers via nonlinear processing with single femtosecond laser pulses
    In: Applied Physics Letters (APL) Vol. 92 (2008) pp. 223111
    Online Full Text: dx.doi.org/
  • Wiemann, M.; Bingmann, Dieter; Franzka, Steffen; Hartmann, Nils; Urch, Henning; Epple, Matthias
    Oriented growth of osteoblast-like cells on two-dimensionally structured films of functionalized calcium phosphate nanoparticles on a silicon substrate
    In: Advanced Engineering Materials Vol. 9 (2007) pp. 1077 - 1081
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Dahlhaus, Daniel; Franzka, Steffen;
    Self-assembled organic templates for the selective adsorption of gold nanoparticles into confined domains
    24th European Conference on Surface Science (ECOSS-24) ; 4-8 September 2006, Paris, France,
    In: Surface Science Vol. 601 (2007) Nr. 18, pp. 3916 - 3920
    Online Full Text: dx.doi.org/
  • Dahlhaus, Daniel; Franzka, Steffen; Hasselbrink, Eckart; Hartmann, Nils
    1D Nanofabrication with a Micrometer-Sized Laser Spot
    In: Nano Letters Vol. 6 (2006) Nr. 10, pp. 2358 - 2361
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Balgar, Thorsten; Bautista, Rafael; Franzka, Steffen
    Direct laser patterning of octadecylsiloxane monolayers on surface-oxidized silicon substrates : Indications for a photothermal excitation mechanism
    In: Surface Science Vol. 600 (2006) Nr. 18, pp. 4034 - 4038
    Online Full Text: dx.doi.org/
  • Balgar, Thorsten; Franzka, S.; Hartmann, Nils
    Laser-assisted decomposition of alkylsiloxane monolayers at ambient conditions : rapid patterning below the diffraction limit
    In: Applied Physics A: Materials Science and Processing Vol. 82 (2006) Nr. 4, pp. 689 - 695
    Online Full Text: dx.doi.org/
  • Balgar, Thorsten; Franzka, Steffen; Hasselbrink, Eckart; Hartmann, Nils
    Laser-assisted fabrication of submicron-structured hydrophilic/ hydrophobic templates for the directed self-assembly of alkylsiloxane monolayers into confined domains
    In: Applied Physics A: Materials Science and Processing Vol. 82 (2006) Nr. 1, pp. 15 - 18
    Online Full Text: dx.doi.org/
  • Urch, Henning; Franzka, Steffen; Dahlhaus, Daniel; Hartmann, Nils; Hasselbrink, Eckart; Epple, Matthias
    Preparation of two-dimensionally patterned layers of functionalised calcium phosphatenanoparticles by laser direct writing
    In: Journal of Materials Chemistry Vol. 16 (2006) Nr. 19, pp. 1798 - 1802
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Scherthan, Harry
    Characterization of the telomere complex, TERF1 and TERF2 genes in muntjac species with fusion karyotypes
    In: Experimental Cell Research Vol. 306 (2005) Nr. 1, pp. 64 - 74
    Online Full Text: dx.doi.org/
  • Franzka, Steffen; Dahlhaus, Daniel; Hartmann, Nils
    Preparation of stacked organosiloxane bilayers on hydrophilic and hydrophobic silicon substrates by spin coating
    In: Thin Solid Films Vol. 488 (2005) Nr. 1-2, pp. 124 - 131
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Scherthan, Harry
    Characterization of ancestral chromosome fusion points in the Indian muntjac deer
    In: Chromosoma Vol. 112 (2004) Nr. 5, pp. 213 - 220
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Schaak, A.; Shaikhutdinov, S.; Imbihl, R.
    Imaging surface topographical changes during plastic deformation of a metal with chemical wave patterns
    In: Surface Science Vol. 548 (2004) Nr. 1-3, pp. 163 - 169
    Online Full Text: dx.doi.org/
  • Balgar, Thorsten; Franzka, Steffen; Hartmann, Nils; Hasselbrink, Eckart
    Preparation of Submicron-Structured Alkylsiloxane Monolayers Using Prepatterned Silicon Substrates by Laser Direct Writing
    In: Langmuir Vol. 20 (2004) Nr. 9, pp. 3525 - 3527
    Online Full Text: dx.doi.org/
  • Balgar, Thorsten; Bautista, Rafael; Hartmann, Nils; Hasselbrink, Eckart;
    An AFM study of the growth kinetics of the self-assembled octadecylsiloxane monolayer on oxidized silicon
    7th International Conference on Nanometer-Scale Science and Technology and the 21st European Conference on Surface Science (NANO-7 / ECOSS-21) ; 24-28 June 2002, Malmö, Sweden,
    In: Surface Science Vol. 532-535 (2003) pp. 963 - 969
    Online Full Text: dx.doi.org/
  • Kalscheuer, Vera M.; Freude, Kristine; Musante, Luciana; Jensen, Lars R.; Yntema, Helger G.; Gecz, Jozef; Sefiani, Abdelaziz; Hoffmann, Kirsten; Moser, Bettina; Haas, Stefan; Gurok, Ulf; Haesler, Sebastian; Aranda, Beatriz; Nshedjan, Arpik; Tzschach, Andreas; Hartmann, Nils; Roloff, Tim-Christoph; Shoichet, Sarah; Hagens, Olivier; Tao, Jiong; van Bokhoven, Hans; Turner, Gillian; Chelly, Jamel; Moraine, Claude; Fryns, Jean-Pierre; Nuber, Ulrike; Hoeltzenbein, Maria; Scharff, Constance; Scherthan, Harry; Lenzner, Steffen; Hamel, Ben C. J.; Schweiger, Susann; Ropers, Hans-Hilger
    Mutations in the polyglutamine binding protein 1 gene cause X-linked mental retardation
    In: Nature Genetics Vol. 35 (2003) Nr. 4, pp. 313 - 315
    Online Full Text: dx.doi.org/ (Open Access)
  • Bautista, Rafael; Hartmann, Nils; Hasselbrink, Eckart
    Two-dimensional aggregation of species with weak and strong bonding interactions : Modeling the growth of self-assembled Alkylsiloxane monolayers
    In: Langmuir Vol. 19 (2003) Nr. 17, pp. 6590 - 6593
    Online Full Text: dx.doi.org/
  • Alemozafar, Ali R.; Guo, Xing-Cai; Madix, Robert J.; Hartmann, Nils; Wang, Jiong
    Reaction of sulfur dioxide with Ag(110)–p(2x1)-O : a LEED, TPRS, and STM investigation
    In: Surface Science Vol. 504 (2002) pp. 223 - 234
    Online Full Text: dx.doi.org/
  • Hartmann, Nils; Kevrekidis, Yannis; Imbihl, Ronald
    Pattern formation in restricted geometries : The NO+CO reaction on Pt(100)
    In: The Journal of Chemical Physics (JCP) Vol. 112 (2000) Nr. 15, pp. 6795 - 6803
    Online Full Text: dx.doi.org/ (Open Access)
  • Schutz, Eckart; Hartmann, Nils; Kevrekidis, Yannis; Imbihl, Ronald
    Catalysis on microstructured surfaces
    In: Faraday Discussions Vol. 105 (1997) pp. 47 - 56
    Online Full Text: dx.doi.org/

    • Book articles / Proceedings papers

  • Hartmann, Nils; Franzka, Steffen; Schröter, Anja; Aumann, Andreas; Ostendorf, Andreas
    Nonlinear processing and multiphoton ablation of self-assembled monolayers for application as ultrathin resists and in biochemical sensors
    In: Optically Induced Nanostructures: Biomedical and Technical Applications / König, Karsten; Ostendorf, Andreas (Eds.) 2015, pp. 117 - 139
    Online Full Text: dx.doi.org/
  • Schade, Martin; Franzka, Steffen; Schröter, Anja; Cappuccino, Franco; Peinecke, Volker; Heinzel, Angelika; Hartmann, Nils
    Laser Patterning of Silanized Carbon/Polymer Bipolar Plates with Tailored Wettability for Fuel Cell Applications
    In: Laser Surface Modification and Adhesion / Mittal, K. L.; Bahners, Thomas (Eds.) 2014, pp. 263 - 287
  • Maragkaki, S.; Aumann, A.; Schulz, Florian; Schröter, A.; Schöps, B.; Franzka, Steffen; Hartmann, Nils; Ostendorf, A. (Eds.)
    Micro-patterning of self-assembled organic monolayers by using tunable ultrafast laser pulses
    In: Frontiers in ultrafast optics: biomedical, scientific, and industrial applications XIV / SPIE photonics west , 2 - 5 February 2014, San Francisco, California, United States 2014
    Online Full Text: dx.doi.org/
  • Aumann, A.; Maragkaki, S.; Schulz, F.; Schröter, A.; Schöps, B.; Franzka, Steffen; Hartmann, Nils; Ostendorf, A.
    Sub-wavelength patterning of self-assembled organic monolayers via non-collinear optical parametric amplifier
    In: ICALEO 2013 - 32nd International Congress on Applications of Lasers and Electro-Optics / 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013, Miami, FL, United States, 6 October 2013 through 10 October 2013 2013, pp. 893 - 897
  • Neubert, M.; Behrenberg, D.; Hartmann, Nils; Buck, Volker; Serbun, P.; Navitski, A.; Muller, G.
    Fabrication, laser structuring and field emission properties of carbon nanowalls
    In: 25th International Vacuum Nanoelectronics Conference (IVNC 2012) / International Vacuum Nanoelectronics Conference, Jeju, South Korea, 9 - 13 July 2012 2012, pp. 354 - 355
    Online Full Text: dx.doi.org/
  • Gaur Jain, H.; Hartmann, Nils; Buck, Volker; Serbun, P.; Navitski, A.; Müller, G.
    Electron emission of laser-structured carbon nanowalls on Si and stainless steel substrates
    In: 24th International Vacuum Nanoelectronics Conference (IVNC), 2011 / International Vacuum Nanoelectronics Conference, 18 - 22 July 2011, Historische Stadthalle Wuppertal, Germany / Klümper, Andreas (Eds.) 2011, pp. 139 - 140
  • Hartmann, Nils; Balgar, Thorsten; Bautista, Rafael; Dahlhaus, Daniel; Franzka, Steffen; Hasselbrink, Eckart
    Preparation of organic monolayers on uniform and patterned silicon substrates
    In: Physical chemistry of interfaces and nanomaterials II: 6 - 8 August 2003, San Diego, California, USA II / Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, 06.-08.08.2003, San Diego, California, United States / Lian, Tianquan; Dai, Hai-Lung (Eds.) 2003, pp. 9 - 23
    Online Full Text: dx.doi.org/

    • Lectures

  • Behrenberg, Dennis; Rier, C.; Karacuban, Hatice; Benson, Niels; Wiggers, Hartmut; Schmechel, Roland; Nienhaus, Hermann; Jäger, Dieter; Hartmann, Nils; Harten, P.; Hauschild, D.;
    Photothermal laser processing of thin silicon nanoparticle films : prospects in photovoltaic applications
    1st International Conference on Materials for Energy, 4. - 8. Juli 2010 Karlsruhe, Germany,
    Karlsruhe (2010)