Publications

S. Hettler, M. Furqan, A. Sotelo, R. Arenal, Toward quantitative thermoelectric characterization of (nano)materials by in-situ transmission electron microscopy, Ultramicroscopy, 268, 11407 (2025).

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Open Access

S. Hettler, R. Arenal, Synthesis and dynamics of PtSi nanoparticles on a carbon nanofilm by in-situ TEM Joule heating, Carbon Trends, 100348 (2024).

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Open Access

S. Hettler, M. Furqan, R. Arenal, Support-Based Transfer and Contacting of Individual Nanomaterials for In Situ Nanoscale Investigations, Small Methods, 202400034 (2024).

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Open Access

S. Hettler, K. Singha Roy, R. Arenal, L. Panchakarla, Stable CoO2 Nanoscrolls with Outstanding Electrical Properties, Advanced Materials Interfaces, 11, 31, 2400317 (2024).

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Open Access

R. Quirós-Ovies, P. Bastante, S. Hettler, V. Vega-Mayoral, S. Aina, V. Balos, T. Pucher, A. Castellanos-Gomez, R. Arenal, J. Cabanillas-Gonzalez, E. M. Pérez, J. Santamaría, V. Sebastian, Chemically-Linked Heterostructures of Palladium
Nanosheets and 2H-MoS2, Small 2406030 (2024).

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Open Access

A. Khadiev, MB Sreedhara, S. Hettler, D. Novikov, R. Arenal, R. Tenne, Misfit Layered Compounds: Insights into Chemical, Kinetic, and Thermodynamic Stability of Nanophases, Acc. Chem. Res., 57, 3243−3253 (2024).

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Open Access

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Open Access

2023

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L. Royer, I. Makarchuk, S. Hettler, R. Arenal, T. Asset, B. Rotonnelli, A. Bonnefont, E. Savinova, Benoit P. Pichon, Core–shell Fe3O4@CoFe2O4 nanoparticles as high-performance anode catalysts for enhanced oxygen evolution reaction, Sustainable Energy & Fuels 7, 3239-3243 (2023).

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Open Access

A. Cohen, P. K. Mohapatra, S. Hettler, A. Patsha, K. V. L. V. Narayanachari,
P. Shekhter, J. Cavin, J. M. Rondinelli, M. Bedzyk, O. Dieguez, R. Arenal, A. Ismach, Tungsten Oxide Mediated Quasi-van der Waals Epitaxy of WS2 on Sapphire. ACS Nano 17, 6, 5399–5411 (2023).

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Open Access

L. Royer, A. Bonnefont, T. Asset, B. Rotonnelli, J-J. Velasco-Vélez, S. Holdcroft, S. Hettler, R. Arenal, B. Pichon, E. Savinova, Cooperative Redox Transitions Drive Electrocatalysis of the Oxygen Evolution Reaction on Cobalt-Iron Core-Shell Nanoparticles. ACS Catal. 13, 280-286 (2023).

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P. Jimenéz-Calvo, Y. Naciri, A. Sobolewska, M. Isaacs, Y. Zhang, A. Leforestier, J. Degrouard, S. Rouzière, C. Goldmann, D. Vantelon, S. Hettler, N.J. Zaluzec, R. Arenal, P. Launois, M.N. Ghazzal, E. Paineau. Ti-Modified Imogolite Nanotubes as Promising Photocatalyst 1D Nanostructures for H2 Production. Small Methods 2301369 (2023).

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Open Access

2022

S. Hettler, R. Arenal, Aberration-corrected transmission electron microscopy with Zernike phase plates. Ultramicroscopy 239, 113564 (2022).

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K. Singha-Roy, S. Hettler, R. Arenal, L. Panchakarla, Strontium Deficient SrxCoO2-CoO2 Nanotubes as a High Ampacity and High Conductivity Material, Materials Horizon 9, 2115-2127 (2022).

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back cover art

Open Access

M. Obermair, S. Hettler, M. Dries, M. Hugenschmidt, R. Spiecker, D. Gerthsen. Carbon-film-based Zernike phase plates with smooth thickness gradient for phase-contrast transmission electron microscopy with reduced fringing artifacts. Journal of Microscopy 287, 45-58 (2022).

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A. Bar-Hen, S. Hettler, A. Ramasubramaniam, R. Arenal, R. Bar-Ziv, M. Bar Sadan. Catalysts for the hydrogen evolution reaction in alkaline medium: Configuring a cooperative mechanism at the Ag-Ag2S-MoS2 interface. Journal of Energy Chemistry 74, 481-488 (2022).

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J. Nuñez, S. Hettler, E. Lima Jr, G. Goya, R. Arenal, R. Zysler, M. Aguirre, E. Winkler. Onion-like Fe3O4/MgO/CoFe2O4 magnetic nanoparticles: new ways to control magnetic coupling between soft and hard magnetic phases, J. Mater. Chem. C, 2022

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M. B. Sreedhara, Y. Miroshnikov, K. Zheng, L. Houben, S. Hettler, R. Arenal,
I. Pinkas, S.S. Sinha, I. E. Castelli, R. Tenne. Nanotubes from Ternary WS2(1−x)Se2x Alloys: Stoichiometry Modulated Tunable Optical Properties. JACS 144 (23), 10530-10541 (2022).

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2021

S. Hettler, R. Arenal. Comparative image simulations for phase-plate transmission electron microscopy. Ultramicroscopy  227, 113319 (2021).

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S. Hettler, D. Sebastian, M. Peláez-Fernández, A. Benito, W. Maser, R. Arenal. In-situ reduction by Joule heating and measurement of electrical conductivity of graphene oxide in a transmission electron microscope. 2D Mater. 8, 031001 (2021).

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MB Sreedhara, S. Hettler, I. Kaplan-Ashiri, K. Rechav, Y. Feldman, A. Enyashin, L. Houben, R. Arenal, R. Tenne. Asymmetric misfit nanotubes: Chemical affinity outwits the entropy at high-temperature solid-state reactions. PNAS 118 (35), e2109945118 (2021).

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A. Bar-Hen, R. Bar Ziv, T. Ohaion-Raz, A. Mizrahi, S. Hettler, R. Arenal, M. Bar Sadan. Shelling with MoS2 - Functional CuS@MoS2 Hybrids as Electrocatalysts for the Oxygen Reduction and Hydrogen Evolution Reactions. Chemical Engineering Journal 420, 1, 129771 (2021).

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K. Sartori, A. Musat, F. Choueikani, J.-M. Grenèche, S. Hettler, P. Bencok,
S. Begin-Colin, P. Steadman, R. Arenal, and B. P.  Pichon. A Detailed Investigation of the Onion Structure of Exchanged Coupled Magnetic Fe3−δO4@CoFe2O4@Fe3−δO4 Nanoparticles. ACS Appl. Mater. Interfaces 13, 14, 16784-16800 (2021).

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2020

M. Malac, S. Hettler, M. Hayashida, E. Kano, R. F. Egerton, M. Beleggia. Phase plates in the transmission electron microscope: operating principles and applications. Microscopy, 70, 1, 75-115 (2020).

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M. Obermair, S. Hettler, C. Hsieh, M. Dries, M. Marko, D. Gerthsen. Analyzing contrast in cryo-transmission electron microscopy: Comparison of electrostatic Zach phase plates and hole-free phase plates. Ultramicroscopy 218, 113086, (2020).

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S. Hettler, M.B. Sreedhara, M. Serra, S.S. Sinha, R. Popovitz-Biro, I. Pinkas, A. N. Enyashin, R. Tenne, R. Arenal. YS-TaS2 and YxLa(1−x)S‑TaS2 (0 ≤ x ≤ 1) Nanotubes: A Family of Misfit Layered Compounds. ACS Nano 14 (5), 5445-5458 (2020).

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2019

R. Pretzsch, M. Dries, S. Hettler, M. Spiecker, M. Obermair, D. Gerthsen. Investigation of hole-free phase plate performance in transmission electron microscopy under different operation conditions by experiment and simulations. Adv Struct Chem Imag 5, 5 (2019)

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S. Hettler, L. Radtke, L. Grünewald, Y. Lisunova, O. Peric, J. Brugger, S. Bonanni. Phase masks for electron microscopy fabricated by thermal scanning probe lithography. Micron 127, 102753 (2019).

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Open Access

S. Hettler, L. Grünewald, M. Malac. Quasi non-diffractive electron Bessel beams using direct phase masks with applications in electron microscopy. New J Phys 21, 033007 (2019).

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S. Hettler, J. Onoda, R. Wolkow, J. Pitters, M. Malac. Charging of electron beam irradiated amorphous carbon thin films at liquid nitrogen temperature. Ultramicroscopy 196, 161-166 (2019).

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2018 and before

M. Dries, M. Obermair, S. Hettler, P. Hermann, K. Seemann, F. Seifried, S. Ulrich, R. Fischer, D. Gerthsen. Oxide-free aC/Zr0.65Al0.075Cu0.275/aC phase plates for transmission electron microscopy. Ultramicroscopy 189, 39-45 (2018).

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S. Hettler, E. Kano, M. Dries, D. Gerthsen, L. Pfaffmann, M. Bruns, M. Beleggia, M. Malac. Charging of carbon thin films in scanning and phase-plate transmission electron microscopy. Ultramicroscopy 184 A, 252-266 (2018).

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M. Malac, S. Hettler, M. Hayashida, M. Kawasaki, Y. Konyuba, Y. Okura, H. Iijima, I. Ishikawa, M. Beleggia. Computer simulations analysis for determining the polarity of charge generated by high energy electron irradiation of a thin film. Micron 100, 10-22 (2017).

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T. Kowoll, E. Müller, S. Fritsch-Decker, S. Hettler, H. Störmer, C. Weiss, D. Gerthsen, Contrast of Backscattered Electron SEM Images of Nanoparticles on Substrates with Complex Structure. Scanning 2017, 4907457 (2017).

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S. Hettler, M. Dries, J. Zeelen, M. Oster, R. R. Schröder, D. Gerthsen. High-resolution transmission electron microscopy with an electrostatic Zach phase plate. New J Phys 18, 053005 (2016).

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M. Dries, S. Hettler, T. Schulze, W. Send, E. Müller, R. Schneider, D. Gerthsen, Y. Luo, K. Samwer. Thin-film phase plates for transmission electron microscopy fabricated from metallic glasses. Microsc Microanal 22, 5, 955-963 (2016).

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S. Hettler, J. Wagner, M. Dries, M. Oster, C. Wacker, R. R. Schröder, D. Gerthsen. On the role of inelastic scattering in phase-plate transmission electron microscopy. Ultramicroscopy 155, 27-41 (2015).

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Y. Klapper, P. Maffre, L. Shang, K. N. Ekdahl, B. Nilsson, S. Hettler, M. Dries, D. Gerthsen, G. U. Nienhaus. Low affinity binding of plasma proteins to lipid-coated quantum dots as observed by in situ fluorescence correlation spectroscopy. Nanoscale 7, 9980-9984 (2015).

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M. Dries, S. Hettler, B. Gamm, E. Müller, W. Send, K. Müller, A. Rosenauer, D. Gerthsen. A nanocrystalline Hilbert phase-plate for phase-contrast transmission electron microscopy. Ultramicroscopy 139, 29-37 (2014).

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N. Frindt, M. Oster, S. Hettler., B. Gamm, L. Dieterle, W. Kowalsky, D. Gerthsen, R. R. Schröder. In-focus electrostatic Zach phase plate imaging for transmission electron microscopy with tunable phase contrast of frozen hydrated biological samples. Microsc Microanal 20 (1), 175-183 (2014).

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S. Hettler, B. Gamm, M. Dries, N. Frindt, R. R. Schröder, D. Gerthsen. Improving Fabrication and Application of Zach Phase Plates for Phase-Contrast Transmission Electron Microscopy.Microsc Microanal 18 (5), 1010-1025 (2012).

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