Scientific director

Technical Director

Dr. Vita Solovyeva





We appreciate your use of our facility and ask you to acknowledge Electron and Light Microscopy Service Unit in all publications derived through the use of the facility or collaborations with the facility's staff. 

For example: "The author(s) acknowledge the Electron and Light Microscopy Service Unit of the School of Mathematics and Science of the Carl von Ossietzky University for the use of the imaging facilities". Assisted acquisition, beyond initial training, should result by agreement in co-authorship by persons responsible for the work in addition to an acknowledgement statement (see above). When HR-TEM used,  DFG  grant (INST 184/ 106-1 FUGG) has to be acknowledged.

Please also notify us whenever you publish papers containing imaging data taken at Electron and Light Microscopy Service Unit, we will update our publication list. 



  1. Tanja Zierdt,  Julia Müller-Hülstede, Henrike Schmies,  Dana Schonvogel, Peter Wagner,  K. Andreas Friedrich. Effect of Polytetrafluorethylene Content in Fe-N-C-Based Catalyst Layers of Gas Diffusion Electrodes for HT-PEM Fuel Cell Applications. ChemElectroChem, 2024 ,e202300583


  1. Henrike Schmies, Nina Bengen, Julia Müller-Hülstede, Olayinka Ahmed Ibitowa, Peter Wagner, Michael Wark. How Effective Is Graphitization of Biomasses for the Carbon Stability of Pt/C ORR Catalysts?Catalysts 2023, 13, 2, 343.
  2. Tran, Q.D., Neu, T.R., Sultana, S., Giebel, H.-A., Simon, M. and  Billerbeck, S.. Distinct glycoconjugate cell surface structures make the pelagic diatom Thalassiosira rotula an attractive habitat for bacteria.Journal of Phycology. 2023;00:1–14. 
  3. Dana Schonvogel, Nambi Krishnan Krishnan Nagappan, Julia Müller-Hülstede, Nina Bengen and Peter Wagner. Effect of Fe-N-Cs as Catalytic Active Support for Platinum towards ORR in Acidic Environment. Journal of The Electrochemical Society.DOI 10.1149/1945-7111/ad09f4
  4. Julia Müller-Hülstede, Henrike Schmies, Dana Schonvogel, Quentin Meyer, Yan Nie, Chuan Zhao, Peter Wagner, Michael Wark. What determines the stability of Fe-N-C catalysts in HT-PEMFCs? International Journal of Hydrogen Energy.
  5. Julia Müller-Hülstede, Lisa M. Uhlig, Henrike Schmies, Dana Schonvogel, Quentin Meyer, Yan Nie, Chuan Zhao, Jurica Vidakovic, Peter Wagner. Towards the Reduction of Pt Loading in High Temperature Proton Exchange Membrane Fuel Cells – Effect of Fe−N−C in Pt-Alloy Cathodes. ChemSusChem 2023,16, e202202046.


  1. J. Müller-Hülstede, N.K. Nagappan, N. Bengen, L.M. Uhlig, D. Schonvogel, P. Wagner, ECS Transactions 2022, Comparative Study of Platinum Nanoparticle Deposition on TiO2/BP and SnO2/BP Nanocomposites for the Oxygen Reduction Reaction, 109, 425.
  2. D. Schonvogel, N.K. Nagappan, N. Bengen, J. Müller-Hülstede, P. Wagner, ECS Transactions 2022, Investigation of Pt/Fe-N-C Hybrids towards ORR in Acidic Environment, 109, 401.
  3. J. Müller-Hülstede, L.M. Uhlig, H. Schmies, D. Schonvogel, Q. Meyer, Y. Nie, C. Zhao, J. Vidakovic, P. Wagner, ChemSusChem, Towards the Reduction of Pt Loading in High Temperature Proton Exchange Membrane Fuel Cells – Effect of Fe-N-C in Pt-alloy Cathodes, 2022, e202202046.
  4. Harms, L., Roth, N., Wittstock, G. A new programmable dipping robot. Electrochem. Sci. Adv.  e2100177 (2022).
  5. Lars Mohrhusen, Nils Brinkmann, Kevin Obermann, Kim Hao Ng, Eustace C. Atata, Jessica Kräuter, Milena Osmić, Maximilian Grebien, and Katharina Al-Shamery. Thermal Stability of Ionic Compounds on Nanostructured Metal Catalysts: Conversion of Quaternary Ammonium to Amines on Gold Nanoparticles. J. Phys. Chem. C 126, 39, 16690–16701 (2022)
  6. Svenja Baues, Heinrich Vocke, Lena Harms, Konstantin K. Rücker, Michael Wark, and Gunther Wittstock. Combinatorial Screening of Cu–W Oxide-Based Photoanodes for Photoelectrochemical Water Splitting. ACS Applied Materials & Interfaces 14 (5), 6590-6603 (2022)
  7. Ibrahim S., Dworzak A., Crespo D., Renner F.U., Dosche C., and Oezaslan M. Nanoporous Copper Ribbons Prepared by Chemical Dealloying of a Melt-Spun ZnCu Alloy. The Journal of Physical Chemistry C (2022) 126 (1), 212-226
  8.  Devendra Pareek,Marco A. Gonzalez,Nedal Grewo,Marten L. Janßen,Kumarahgiri Arunakiri,Kayode Luqman Alimi,Martin Silies,Jürgen Parisi,Levent Gütay,Sascha Schäfer. Large-Area Growth of MoS2/WS Heterostructures by a Sequential Atomic Layer Deposition and Spin-Coating Approach. Adv. Mater. Interfaces 2200816 (2022)
  9. Philipp Weber, Daniel J. Weber, Carsten Dosche, and Mehtap Oezaslan. Highly Durable Pt-Based Core–Shell Catalysts with Metallic and Oxidized Co Species for Boosting the Oxygen Reduction Reaction.  ACS Catalysis (2022) 12 (11), 6394-6408


  1. Erhard Rhiel, Christian Hoischen & Martin Westermann. Rhodopsins build up the birefringent bodies of the dinoflagellate Oxyrrhis marina. Protoplasma. (2021)
  2. Hamsa Ahmed, Vita Solovyeva, Marco A. Gonzalez, Mohamed Elshabasi,  Michael Richter, Devendra Pareek, Stephan J. Heise, Marko Stölzel, Alfons Weber,Thomas Dalibor, Sascha Schäfer, and Jürgen Parisi. Impact of the Buffer/Absorber Interface on the Metastability of Fill Factor Temperature Coefficients in CIGSSe Solar Cells. Advanced Materials Interfaces. 18, 2100778 (2021)
  3. Dana Schonvogel, Julian Büsselmann, Henrike Schmies, Hendrik Langnickel, Peter Wagner and Alexander Dyck. High temperature polymer electrolyte membrane fuel cell degradation provoked by ammonia as ambient air contaminant.  Journal of Power Sources, 502, 1, 229993 (2021).
  4. Julia R. Geppert, Pascal Buhani, Katharina Al-Shamery, Olaf R.P. Bininda-Emonds, Wilko H. Ahlrichs. Lethal effects and ultrastructure of cellular uptake of ingested gold nanoparticles in the freshwater rotifer Brachionus calyciflorus (Monogononta: Brachionidae). Environmental Pollution 289 117897 (2021)
  5. N. Müller, V. Hock, C. Rathje, H. Koch and S. Schäfer, Broadband coupling of fast electrons to high-Q whispering gallery mode resonators, ACS Photonics,
  6. M. A. Gonzalez, D. Pareek, L. Büsing, M. Beer, J. Parisi, S. Schäfer, L. Gütay, Rapid formation of large area MoS2 monolayers by a parameter resilient atomic layer deposition approach, APL Materials 9, 051122 (2021)
  7. Weber D. J. , Dosche C. and Oezaslan M. Tuning of Pt–Co nanoparticle motifs for enhancing the HOR performance in alkaline media. J. Mater. Chem. A, (2021) 9,15415–15431
  8. Hülstede, J.; Schonvogel, D.; Schmies, H.; Wagner, P.; Schröter, F.; Dyck, A.; Wark, M. Relevant Properties of Carbon Support Materials in Successful Fe-N-C Synthesis for the Oxygen Reduction Reaction: Study of Carbon Blacks and Biomass-Based Carbons. Materials 2021, 14, 45.
  9. Julia Müller-Hülstede, Dana Schonvogel, Henrike Schmies, Peter Wagner, Alexander Dyck and Michael Wark. Incorporation of Activated Biomasses in Fe-N-C Catalysts for Oxygen Reduction Reaction with Enhanced Stability in Acidic Media. ACS Appl. Energy Mater. 4, 7,  6912 (2021)
  10. Marius Gollasch, Julia Müller-Hülstede, Henrike Schmies, Dana Schonvogel, Peter Wagner, Alexander Dyck and Michael Wark. Elucidating Synergistic Effects of Different Metal Ratios in Bimetallic Fe/Co-N-C Catalysts for Oxygen Reduction Reaction Catalysts 11(7), 841; (2021)
  11. Nemitz L, Dedek K, Janssen-Bienhold U. Synaptic Remodeling in the Cone Pathway After Early Postnatal Horizontal Cell Ablation. Front Cell Neurosci. 15:657594. doi: 10.3389/fncel.2021.657594 (2021).
  12. D. Schonvogel, J. Büsselmann, P. Wagner, U. Misz, H. Langnickel, A. Dyck. Effect of air contamination by NOx on the performance of high temperature PEM fuel cells. Int. J. Hydrogen Energy, 46 (3), Pages 6751-6761, 10.1016/j.ijhydene.2020.11.136 (2021)


  1. Westermann, M., Ammermann, S., Rhiel, E.: The trichocyst matrix proteins of the dinoflagellate Oxyrrhis marina: a direct proof by immunofluorescence light microscopy and immuno-electron microscopy. Nova Hedwigia 110: 269-279 (2020)
  2. Wilke, T., Ahlrichs, W. H., & Bininda‐Emonds, O. R. The evolution of Synchaetidae (Rotifera: Monogononta) with a focus on Synchaeta: An integrative approach combining molecular and morphological data. Journal of Zoological Systematics and Evolutionary Research. 2020;58:823–857.
  3. Alex Ricardo Silva Olaya, Birthe Zandersons, and Gunther Wittstock. Restructuring of Nanoporous Gold Surfaces During Electrochemical Cycling in Acidic and Alkaline Media. ChemElectroChem (2020) 7, 3670–3678
  4. Rhiel, E., Westermann, M., Steiniger, F., Hoischen, C.: The proteorhodopsins of the dinoflagellate Oxyrrhis marina: ultrastructure and localization by immunofluorescence light microscopy and immunoelectron microscopy. Protoplasma 257: 1531-1541 (2020) DOI: 10.1007/s00709-020-01530-z 
  5.  Kevin Eickhoff*, Christopher Rathje*, Darius Köhnke, Stefanie Kerbstadt, Lars Englert, Tim Bayer, Sascha Schäfer and Matthias Wollenhaupt, Orbital angular momentum superposition states in transmission electron microscopy and bichromatic multiphoton ionization. New Journal of Physics, 2020. (*equal contribution)
  6. A. Dushina, H. Schmies, D. Schonvogel, A. Dyck, P. Wagner, Int. J. Hydrogen Energy 2020, 45, 12.
  7. K. Yezerska, F. Liu, A. Dushina, O. Sergeev, P. Wagner, A. Dyck, M. Wark, J. Power Sources 2020, 449, 227562.
  8. M. Siemer, G. Tomaschun, T. Klüner, P. Christopher and K. Al-Shamery, Insights into Spectator-Directed Catalysis: CO Adsorption on Amine- Capped Platinum Nanoparticles on Oxide Supports, ACS Appl. Mater. Interfaces, 12, 24, 27765–27776. (2020)


  1. Schnier, J., Ahlrichs, W.H., Gruhl, A., Schulbert, C., Teichert. S. & Kieneke, A. (2019) Ultrastructure of the epidermal gland system of Tetranchyroderma suecicum Boaden, 1960 (Gastrotricha: Macrodasyida) indicates a defensive function of its exudate. Zoomorphology 138: 443-462.
  2. Alshalfouh A., Oezaslan M., Dosche C., and Wittstock,G. (2019) Electrochemistry of CdSe Quantum Dots Studied by Single Molecule Spectroscopy. ChemElectroChem 2019, 6, 1884–1893.
  3. Nguyen, T., Ammermann, S., Kieselhorst, E., Rhiel, E.: Scanning electron microscopy of the dinoflagellate Oxyrrhis marina: a matter of method. Nova Hedwigia 109: 17-39 (2019), doi: 10.1127/nova_hedwigia/2019/0540.
  4. Safo I. A., Werheid M., Dosche C., and Oezaslan M. The role of polyvinylpyrrolidone (PVP) as a capping and structure-directing agent in the formation of Pt nanocubes. Nanoscale Adv. (2019) 1, 3095-3106
  5. Fischer, T., Schorb, M., Reintjes, G., Kolovou, A., Santarella-Mellwig, R., Markert, M., Rhiel, E., Littmann, S., Becher, D., Schweder, T., Harder, J.: Biopearling of interconnected outer membrane vesicle chains by a marine flavobacterium. Applied and Environmental Microbiology 85 (19) e00829-19 (2019), doi: 10.1128/AEM.00829-19.
  6. Safo I.A., Dosche C. , Özaslan M. Effects of Capping Agents on the Oxygen Reduction Reaction Activity and Shape Stability of Pt Nanocubes. ChemPhysChem (2019)  20, 3010.
  7. Heyerhoff, B., Nguyen, T., Hillebrand, H., Rhiel, E.: On the morphology and predatory behavior of the dinoflagellate Oxyrrhis marina exposed to reduced salinity. European Journal of Protistology 68: 37-47 (2019), doi: 10.1016/j.ejop.2019.01.004.
  8. Wilke, T., Ahlrichs, W. H., & Bininda-Emonds, O. R. (2019). Is the valid species Synchaeta monopus Plate, 1889 (Rotifera: Monogononta) a product of preparation artefacts? Journal of Natural History, 53, 413-423
  9. Wilke, T., Ahlrichs, W. H., & Bininda-Emonds, O. R. (2019). A weighted taxonomic matrix key for species of the rotifer genus Synchaeta (Rotifera, Monogononta, Synchaetidae). Zookeys. 2019; 871: 1–40.


  1. Rhiel, E., Wöhlbrand, L., Rabus, R.: Lectin-binding and dissociation/reconstitution studies on the trichocysts of the dinoflagellate Oxyrrhis marina. Protoplasma 256:459-469 (2019), doi: 10.1007/s00709-018-1308-z (2018).
  2. Wilke, T., Ahlrichs, W. H., & Bininda-Emonds, O. R. (2018). A comprehensive and integrative re-description of Synchaeta oblonga and its relationship to Synchaeta tremulaSynchaeta rufina and Synchaeta littoralis (Rotifera: Monogononta). Organisms Diversity & Evolution, 18, 407-423.
  3. Safo, Isaac A., Dosche, Carsten and Oezaslan, Mehtap. "TEM, FTIR and Electrochemistry Study: Desorption of PVP from Pt Nanocubes" Zeitschrift für Physikalische Chemie, (2018) 232, 1319-1333.
  4. Weber P., Werheid M., Janssen M. and Oezaslan M. ECS Trans. (2018) 86 433.
  5. Wilke, T., Ahlrichs, W. H., & Bininda-Emonds, O. R. (2018). On the importance of robust species descriptions for Rotifera: Re-descriptions of Synchaeta stylata and Synchaeta longipes and a comparison to Synchaeta jollyae. Zoologischer Anzeiger, 277, 42-54.
  6. Ahlrichs, W. H., & Riemann, O. 2018. Seisonidae. In A. Schmidt-Rhaesa (Ed) Miscellaneous invertebrates pp. 55-84): Walter de Gruyter GmbH & Co KG.
  7. Michael Siemer, Lars Mohrhusen, Maximilian Grebien and Katharina Al-Shamery. Amine Capped Gold Colloids at Oxidic Supports: Their Electronic Interactions. Zeitschrift für Physikalische Chemie, (2018)  233, 1, 69–84


  1. Ammermann, S., Hillebrand, H., Rosenfeld, N., Rhiel, E.: On the predatory behavior of Oxyrrhis marina (Dinophyceae) feeding on Pyramimonas grossii (Prasinophyceae). Algological Studies 153: 41-58 (2017), doi: 10.1127/algol_stud/2017/0280 (2017).
  2. Rhiel, E., Wöhlbrand, L., Rabus, R., Voget, S.: Candidates of trichocyst matrix proteins of the dinoflagellate Oxyrrhis marina. Protoplasma 255 :217–230 (2018), doi: 10.1007/s00709-017-1148-2 (2017).
  3. Wilke, T., Ahlrichs, W. H., & Bininda-Emonds, O. R. (2017). A comprehensive and integrative re-description of Synchaeta tremula (müller, 1786) and the newly rediscovered Synchaeta tremuloida pourriot, 1965 (Rotifera: Synchaetidae). Zootaxa, 4276, 503-518.
  4. Özaslan, M., Herrmann, A.-K., Werheid, M., Frenkel, A.I., Nachtegaal, M., Dosche, C., Laugier Bonnaud, C., Yilmaz, H.C., Kühn, L., Rhiel, E., Gaponik, N., Eychmüller, A., Schmidt, T.J.: Structural Analysis and Electrochemical Properties of Bimetallic Pd-Pt Aerogels prepared by a two-step Gelation Process. ChemCatChem 9: 798–808 (2017) doi: 10.1002/cctc.201600667.
  5. Lars Mohrhusen and Milena Osmíc. Sterical ligand stabilization of nanocrystals versus
    electrostatic shielding by ionic compounds: a principle model study with TEM and XPS. RSC Adv., (2017) 7, 12897–12907


  1. Rhiel, E.: On the extrusomes of Oxyrrhis marina (Dinophyceae). Protoplasma 254 : 901-909 (2017),  doi: 10.1007/s00709-016-0999-2 (2016).
  2. Rhiel, E: On the biogenesis and degradation of ejectisomes in Pyramimonas grossii (Prasinophyceae). Protoplasma 253: 1101-1110 (2016), doi: 10.1007/s00709-015-0868-4.


  1. Kizina, J., Žure, M., Rhiel, E., Munn, C.B., Richter, M., Harder, J.: Permanent draft genome of ‘Rhodopirellula islandica’ strain K833. Marine Genomics 24: 249-251 (2015), doi:10.1016/j.margen.2015.07.011 (2015).
  2. Westermann, M., Steiniger, F., Gülzow, N., Hillebrand, H., Rhiel, E.: Isolation and characterization of the trichocysts of the dinophyte Prorocentrum micans. Protoplasma 252: 271-281 (2015) doi: 10.1007/s00709-014-0675-3 (2014).



  1. Wilts, E. F., Bruns, D., Fontaneto, D., & Ahlrichs, W. H. (2012). Phylogenetic study on Proales daphnicola Thompson, 1892 (Proalidae) and its relocation to Epiphanes (Rotifera: Epiphanidae). Zoologischer Anzeiger-A Journal of Comparative Zoology, 251, 180-196.
  2. Wilts, E. F., Wulfken, D., Ahlrichs, W. H., & Martinez Arbizu, P. (2012). The musculature of Squatinella rostrum (Milne, 1886) (rotifera: Lepadellidae) as revealed by confocal laser scanning microscopy with additional new data on its trophi and overall morphology. Acta Zoologica (Stockholm), 93, 11-27.
  3. Wulfken, D., & Ahlrichs, W. H. (2012). The ultrastructure of the mastax of Filinia longiseta(Flosculariaceae, Rotifera): Informational value of the trophi structure and mastax musculature. Zoologischer Anzeiger-A Journal of Comparative Zoology, 251, 270-278.


  1. Fischer, C., & Ahlrichs, W. H. (2011). Revisiting the Cephalodella trophi types. Hydrobiologia, 662, 205-209.


  1. Riemann, O., & Ahlrichs, W. H. (2010). The evolution of the protonephridial terminal organ across Rotifera with particular emphasis on Dicranophorus forcipatus, Encentrum mucronatum and Erignatha clastopis (Rotifera: Dicranophoridae). Acta Zoologica, 91, 199-211.
  2. Wilts, E. F., & Ahlrichs, W. H. (2010). Proales tillyensis sp. n. (Monogonota: Proalidae), a new rotifer species from North-West Germany, with reconstruction of its somatic musculature. Invertebrate Zoology, 7, 29-46.
  3. Wilts, E. F., Arbizu, P. M., & Ahlrichs, W. H. (2010). Description of Bryceella perpusilla n. sp (Monogononta: Proalidae), a new rotifer species from terrestrial mosses, with notes on the ground plan of Bryceella Remane, 1929. International Review of Hydrobiology, 95, 471-481.
  4. Wilts, E. F., Wulfken, D., & Ahlrichs, W. H. (2010). Combining confocal laser scanning and transmission electron microscopy for revealing the mastax musculature in Bryceella stylata(Milne, 1886) (Rotifera: Monogononta). Zoologischer Anzeiger, 248, 285-298.
  5. Wulfken, D., Wilts, E. F., Martínez-Arbizu, P., & Ahlrichs, W. H. (2010). Comparative analysis of the mastax musculature of the rotifer species Pleurotrocha petromyzon (Notommatidae) and Proales tillyensis (Proalidae) with notes on the virgate mastax type. Zoologischer Anzeiger-A Journal of Comparative Zoology, 249, 181-194.


  1. Riemann, O., Wilts, E. F., Ahlrichs, W. H., & Kieneke, A. (2009). Body musculature of Beauchampiella eudactylota (Gosse, 1886) (Rotifera: Euchlanidae) with additional new data on its trophi and overall morphology. Acta Zoologica, 90, 265-274.
  2. Strojsova, M., & Ahlrichs, W. H. (2009). Differentiation between activity of digestive enzymes of Brachionus calyciflorus and extracellular enzymes of its epizooic bacteria. Journal of Limnology, 68, 409-412.
  3. Wilts, E. F., Ahlrichs, W. H., & Arbizu, P. M. (2009). The somatic musculature of Bryceella stylata (Milne, 1886) (Rotifera: Proalidae) as revealed by confocal laser scanning microscopy with additional new data on its trophi and overall morphology.
  4. Wilts, E. F., Bininda-Emonds, O. R. P., & Ahlrichs, W. H. (2009). Comparison of the predatory rotifers Pleurotrocha petromyzon (Ehrenberg, 1830) and Pleurotrocha sigmoidea Skorikov, 1896 (Rotifera: Monogononta: Notommatidae) based on light and electron microscopic observations.
  5. Kieneke, A., Ahlrichs, W. H., & Arbizu, P. M. (2009). Morphology and function of reproductive organs in Neodasys chaetonotoideus (Gastrotricha: Neodasys) with a phylogenetic assessment of the reproductive system in Gastrotricha.
  6. Riemann, O., Kieneke, A., & Ahlrichs, W. (2009). Phylogeny of Dicranophoridae (Rotifera: Monogononta)–a maximum parsimony analysis based on morphological characters. Journal of Zoological Systematics and Evolutionary Research, 47, 61-76.


  1. Kieneke, A., Ahlrichs, W. H., Arbizu, P. M., & Bartolomaeus, T. (2008). Ultrastructure of protonephridia in Xenotrichula carolinensis syltensis and chaetonotus maximus (Gastrotricha: Chaetonotida): Comparative evaluation of the gastrotrich excretory organs. Zoomorphology, 127, 1-20.
  2. Kieneke, A., Arbizu, P. M., & Ahlrichs, W. H. (2008). Anatomy and ultrastructure of the reproductive organs in Dactylopodola typhle (Gastrotricha: Macrodasyida) and their possible functions in sperm transfer. Invertebrate Biology, 127, 12-32.
  3. Riemann, O., & Ahlrichs, W. H. (2008). Ultrastructure and function of the mastax in Dicranophorus forcipatus (Rotifera : Monogononta). Journal of Morphology, 269, 698-712.
  4. Riemann, O., Kieneke, A., & Ahlrichs, W. H. (2008). Phylogeny of Dicranophoridae (Rotifera: Monogononta) - a maximum parsimony analysis based on morphological characters. Journal of Zoological Systematics and Evolutionary Research, 47, 61-76.


  1. Kieneke, A., Arbizu, P. M., & Ahlrichs, W. H. (2007). Ultrastructure of the protonephridial system in Neodasys chaetonotoideus (Gastrotricha: Chaetonotida) and in the ground pattern of Gastrotricha. Journal of Morphology, 268, 602-613.


  1. Fischer, C., & Ahlrichs, W. H. (2006). Cephalodella ungulata n.sp (Monogononta : Notommatidae), a new rotifer species from North-West Germany, with notes on C. tenuiseta(Burn, 1890). Zootaxa, 49-59.


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