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Research
Our research focus is the investigation of structural, topographical, and chemical changes taking place on the surface and in the bulk of materials during their synthesis, manufacturing, and use. To this aim, we will perform in-situ and real-time studies, establishing correlated workflows between different characterization techniques.
On this page, we briefly describe the main scientific goals of the MAPEX Core Facility. You can find some examplery papers related to each of the goals. A more comprehensive overview of the most important publications related to experiments in the MAPEX-CF can be found on our "research highlights" page.
In-situ, real-time investigations
By using specially designed holders capable of putting samples under mechanical, thermal, or chemical loads and gradients, different kinds of in-situ and real-time studies can be performed at the MAPEX-CF. Different environmental chambers, heating/cooling stages, low-pressure gas injection nozzles, and mechanical testing stages installed at our diffraction, spectroscopy, and microscopy instruments allow for state-of-the-art materials analytics research.
Correlated Workflows
In order to test, image, and analyze the same sample regions with complementary techniques, correlated workflows between instruments are being constantly implemented at the MAPEX-CF. Retrieving the 3D chemical composition of different samples utilizing a correlated XRM and EDX + FIB/SEM approach and a combination of VSI/Raman spectroscopy with fast-scan AFM are some examples of already established workflows.
Further workflows will be established with the projects funded by the MAPEX-CF Grants for Correlated Workflows.
Materials Modeling
In close cooperation with the Bremen Center for Computational Materials Science (BCCMS), the experimental information obtained at MAPEX-CF is combined with materials modeling at several scales. TEM and XRD studies in combination with DFT calculations and AFM measurements together with coarse-grained dissipative particle dynamics simulations are only a few examples of the work jointly carried out between the MAPEX-CF and the BCCMS.
Research Highlights
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Influence of surface orientation on the variability of olivine dissolution rates
![](/fileadmin/_processed_/c/f/csm_Using-convolutional-neural_ccb4db4146.jpeg)
Using convolutional neural networks for stereological characterization of 3D hetero-aggregates based on synthetic STEM data
![](/fileadmin/_processed_/1/2/csm_Synthesis_and_characterization-2024_80ae065d52.jpg)
Synthesis and characterization of (Pb1−xSr x )MnBO4: a structural and spectroscopic study
![](/fileadmin/_processed_/5/1/csm_gan-atomic_d3f7a5fc6b.png)
GaN atomic electric fields from a segmented STEM detector: Experiment and simulation
![](/fileadmin/_processed_/8/b/csm_sputter-deposited_a9c4127891.jpeg)
Sputter-Deposited β-Ga₂O₃ Films With Al Top Electrodes for Resistive Random Access Memory Technology
![](/fileadmin/_processed_/0/3/csm_Krisponeit2023_86779e3e1e.jpg)
Growth and characterization of sputter-deposited Ga2O3-based memristive devices
![Guo et al. 2023 Figure from the paper of Guo et al.](/fileadmin/_processed_/6/f/csm_Guo2023_87aed40b1b.jpg)
Gold Nanoparticle-Coated Bioceramics for Plasmonically Enhanced Molecule Detection via Surface-Enhanced Raman Scattering
![Figure from the publication](/fileadmin/_processed_/a/f/csm_Albers2023_e567c01cf5.png)
Timing of carbon uptake by oceanic crust determined by rock reactivity
![Figure from the publication](/fileadmin/_processed_/f/5/csm_AlonsoOrts_2023_62bbfe0b1c.png)
Correlative analysis on InGaN/GaN nanowires: structural and optical properties of self-assembled short-period superlattices
![Figure from the publication](/fileadmin/_processed_/e/9/csm_Wolpmann_2023_ad6f75eadb.jpg)
Halide-sodalites: thermal behavior at low temperatures and local deviations from the average structure
![[Translate to English:]](/fileadmin/_processed_/d/0/csm_XRM_Nils_c7a1a6f19a.png)
Gas Atomization of Duplex Stainless Steel Powder for Laser Powder Bed Fusion
![TEM](/fileadmin/_processed_/4/5/csm_Rosenauer_Grieb_2022_f197741e6d.jpg)
Deformed Honeycomb Lattices of InGaAs Nanowires Grown on Silicon-on-Insulator for Photonic Crystal Surface-Emitting Lasers
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/8/0/csm_FaltaFlege2022_4x3b_0cf8ee65c1.png)
Growth Mechanism of Single-Domain Monolayer MoS2 Nanosheets on Au(111) Revealed by In Situ Microscopy: Implications for Optoelectronics Applications
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/0/e/csm_Rosenauer2022_gold.jpeg_9322b99235.png)
New Perspectives for Evaluating the Mass Transport in Porous Catalysts and Unfolding Macro- and Microkinetics
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/9/2/csm_Krause_2023_bf0c3db1aa.jpg)
Dose efficient annular bright field contrast with the ISTEM method: A proof of principle demonstration
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/b/7/csm_Gesing2022_red_21fdbfa531.jpeg)
On red tin (II) oxide: temperature-dependent structural, spectroscopic, and thermogravimetric properties
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/f/0/csm_Falta2022_4x3_ee7222b4e1.png)
Phase Separation within Vanadium Oxide Islands under Reaction Conditions: Methanol Oxidation at Vanadium Oxide Films on Rh(111)
![picture](/fileadmin/_processed_/5/c/csm_Gesing_et_al_2022_Effects_f413be64a0.png)
Effects of iron substitution and anti-site disorder on crystal structures, vibrational, optical and magnetic properties of double perovskites Sr2(Fe1−xNix)TeO6
![picture](/fileadmin/_processed_/7/d/csm_Gesing_et_al_2022_eac27b0880.png)
Nano-crystalline precursor formation, stability, and transformation to mullite-type visible-light photocatalysts
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/4/a/csm_Rosenauer2022_15585b2db8.jpeg)
Investigation of the dealloying front in partially corroded alloys
![XRM](/fileadmin/_processed_/4/5/csm_Kahl_etal_2022_51775773e0.jpg)
Enhanced weathering in the seabed: Rapid olivine dissolution and iron sulfide formation in submarine volcanic ash
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/e/6/csm_Iris_InGaN_image_Mapex_HP_01_9ac17a226b.png)
Angle-dependence of ADF-STEM intensities for chemical analysis of InGaN/GaN
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/7/3/csm_SiGe_experiment_120nm_21mrad_110ZA_VCA_EField_CoG_AllThicknesses_neu_4MAPEX_aacf2c386c.png)
Towards the interpretation of a shift of the central beam in nano-beam electron diffraction as a change in mean inner potential
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Promoting Effect of the Residual Silver on the Electrocatalytic Oxidation of Methanol and Its Intermediates on Nanoporous Gold
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/9/f/csm_Gesing2022png_275d1b7453.png)
Revisiting the Growth of Large (Mg,Zr):SrGa12O19 Single Crystals: Core Formation and Its Impact on Structural Homogeneity Revealed by Correlative X-ray Imaging
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/a/0/csm_Open_Ceramics_2022_MurshedMaas_ae36406658.jpg)
Plasmonic porous ceramics based on zirconia-toughened alumina functionalized with silver nanoparticles for surface-enhanced Raman scattering
Halide-sodalites: thermal expansion, decomposition and the Lindemann criterion
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/3/c/csm_MurshedGesing2018_f5f58b2fa6.png)
Structural, vibrational, thermal, and magnetic properties of mullite-type NdMnTiO5 ceramic
Thermal anomalies and phase transitions in Pb2Sc2Si2O9 and Pb2In2Si2O9
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/1/2/csm_JPCC_FaltaJOK_2021_2703f1ec1d.gif)
Structural Transitions Driving Interface Pulses in Methanol Oxidation on Rh(110) and VOx/Rh(110): A LEEM Study
![picture](/fileadmin/_processed_/3/4/csm_2021_Luttge_et_al_4fb641def7.jpg)
The role of crystal heterogeneity in alkali feldspar dissolution kinetics
Influence of Processing Route on the Surface Reactivity of Cu47Ti33Zr11Ni6Sn2Si1 Metallic Glass
![Electron Microscopy](/fileadmin/_processed_/6/c/csm_Mahr_Dworzak_et_al_2021_196d3c4772.png)
Quantitative 3D Characterization of Nanoporous Gold Nanoparticles by Transmission Electron Microscopy
Multiscale investigation of olivine (0 1 0) face dissolution from a surface control perspective
![picture](/fileadmin/_processed_/2/7/csm_Florian_F._Krause_et_al_2021_20303c0924.png)
Precise measurement of the electron beam current in a TEM
![agglomerates figure](/fileadmin/_processed_/0/9/csm_Endres_et_al_2021_a9c01e9d55.jpg)
A review of contact force models between nanoparticles in agglomerates, aggregates, and films
![picture](/fileadmin/_processed_/4/d/csm_Grieb_et_al_2021_04dc68eb66.png)
Angle-resolved STEM using an iris aperture: Scattering contributions and sources of error for the quantitative analysis in Si
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/7/8/csm_Dilissen_etal_2021_8f8a0326b9.jpg)
Morphological transition during prograde olivine growth formed by high-pressure dehydration of antigorite-serpentinite to chlorite-harzburgite in a subduction setting
![Figure](/fileadmin/_processed_/b/5/csm_Langstaedler_et_al_2021_4b8f3a69c3.png)
Short-Term Material Characterization by Electrohydraulic Incremental Extrusion through Micro Channels
![picture](/fileadmin/user_upload/sites/mapex-cf/Electron_Microscopy/Mahr_et_al_2021.png)
Accurate measurement of strain at interfaces in 4D-STEM: A comparison of various methods
![Figure](/fileadmin/_processed_/1/4/csm_Pedrose_et_al_2021_00fade1bfe.jpg)
Influence of chemical zoning on sandstone calcite cement dissolution: The case of manganese and iron
![Eine kreisrunde Fläche aufgefächert](/fileadmin/_processed_/6/d/csm_Krisponeit_et_al_3f58191730.png)
The morphology of VO2/TiO2(001): terraces, facets, and cracks
![Eine kreisrunde Fläche aufgefächert](/fileadmin/_processed_/6/d/csm_Krisponeit_et_al_c8cf996029.png)
The morphology of VO2/TiO2(001): terraces, facets, and cracks
![[Translate to English:] [Translate to English:]](/fileadmin/_processed_/c/5/csm_Crystal_structure_of_KLi2Ho_BO3_2_931e321e37.jpeg)
KLi2RE(BO3)2 (RE = Dy, Ho, Er, Tm, Yb, and Y): Structural, Spectroscopic, And Thermogravimetric Studies on a Series of Mixed-Alkali Rare-Earth Orthoborates
Crystal structure and temperature-dependent properties of Na2H4Ga2GeO8 – a novel gallogermanate
![Electron Microscopy Figure](/fileadmin/_processed_/0/d/csm_Beyer_etal_2020_3fafc1f31d.png)
Influence of plasmon excitations on atomic-resolution quantitative 4D scanning transmission electron microscopy
![Laser on substrate Figure](/fileadmin/_processed_/6/f/csm_Tessarek_et_al_2020_b81c11f798.jpeg)
Controlled Laser-Thinning of MoS2 Nanolayers and Transformation to Amorphous MoOx for 2D Monolayer Fabrication
![science Figure](/fileadmin/_processed_/d/4/csm_Darlington_et_al_2020_26d675e4ee.png)
Imaging strain-localized excitons in nanoscale bubbles of monolayer WSe2 at room temperature
On the nature of the phase transitions of aluminosilicate perrhenate sodalite
![Catalyst redistribution Figure](/fileadmin/_processed_/d/2/csm_Boehn_et_al_2020_b485831bcf.jpg)
Reaction dynamics of metal/oxide catalysts: Methanol oxidation at vanadium oxide films on Rh(111) from UHV to 10(-2) mbar
![3D printing colloidal assembly](/fileadmin/_processed_/c/e/csm_PublicationFocke_2_0a6d516978.png)
Strong Macroscale Supercrystalline Structures by 3D Printing Combined with Self‐Assembly of Ceramic Functionalized Nanoparticles
Adsorption of sulfur on Si(111)
![graphical abstract with a diagramm](/fileadmin/_processed_/1/0/csm_Moqadam_et_al_2020_e225ad1237.png)
Reproducibility of High-Throughput Sample Properties Produced by a High-Temperature Molten Metal Droplet Generator
![Stress Figure](/fileadmin/_processed_/8/9/csm_Meyer_et_al_2020_7a59897c48.png)
Spatial Internal Material Load and Residual Stress Distribution Evolution in Synchrotron In SituInvestigations of Deep Rolling
![3D Material Analyse](/fileadmin/_processed_/5/1/csm_Kahl_etal_2020_1_076a131a1c.jpg)
Crystal surface reactivity analysis using a combined approach of X-ray micro-computed tomography and vertical scanning interferometry
![workflow Figure](/fileadmin/_processed_/1/7/csm_Bader_et_al_2019_7905b2e993.png)
Parameter Optimization in High-Throughput Testing for Structural Materials
Controlling the Multiscale Structure of Nanofibrous Fibrinogen Scaffolds for Wound Healing
![Picture of A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water](/fileadmin/_processed_/4/a/csm_PublicationFocke1_2_7cd61e2cc6.png)
A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water
![Starfish](/fileadmin/_processed_/6/d/csm_PublicationFocke_3_ab27ba95fd.png)
Morphology, shape variation and movement of skeletal elements in starfish (Asterias rubens)
![picture](/fileadmin/_processed_/b/e/csm_Knut_Mueller-Caspary_et_al_2019_aed5498ddc.png)
Electrical Polarization in AlN/GaN Nanodisks Measured by Momentum-Resolved 4D Scanning Transmission Electron Microscopy
Kinetic concepts for quantitative prediction of fluid-solid interactions
![picture](/fileadmin/_processed_/1/1/csm_Christoph_Mahr_et_al_2019_ef5a2ee4cf.png)
Influence of distortions of recorded diffraction patterns on strain analysis by nano-beam electron diffraction
Kinetics of pipeline steel corrosion studied by Raman spectroscopy-coupled vertical scanning interferometry
Low-temperature anharmonicity and symmetry breaking in the sodalite |Na8I2|[AlSiO4]6
![3D Analytics Picture](/fileadmin/_processed_/5/6/csm_Dilissen_etal_2018_c1e5adadac.png)
Textural evolution during high-pressure dehydration of serpentinite to peridotite and its relation to stress orientations and kinematics of subducting slabs: Insights from the Almirez ultramafic massif
Temperature-dependent Structural and Spectroscopic Studies of (Bi1–xFex)FeO3
Discrimination of Ceramic Surface Finishing by Vertical Scanning Interferometry
![3D Material Picture](/fileadmin/_processed_/7/c/csm_Titschak_etal_2018_6880045db5.png)
Ambient occlusion – A powerful algorithm to segment shell and skeletal intrapores in computed tomography data
![Electron Microscopy Figures](/fileadmin/_processed_/0/9/csm_Grieb_etal_2018_f159365cdb.png)
Quantitative HAADF STEM of SiGe in presence of amorphous surface layers from FIB preparation
Structural and spectroscopic comparison between polycrystalline, nanocrystalline and quantum dot visible light photo-catalyst Bi2WO6
![Electron Microscopy Figure](/fileadmin/_processed_/6/e/csm_Mahr_etal_2017_8f62aee1d3.png)
Quantitative determination of residual silver distribution in nanoporous gold and its influence on structure and catalytic performance
![3D Material picture](/fileadmin/_processed_/6/0/csm_Wisshak_etal_2017_6f6bd13a41.png)
Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT
![3D Material Picture](/fileadmin/_processed_/8/f/csm_Kahl_etal_2017_09e3d5bc97.png)
3-D microstructure of olivine in complex geological materials reconstructed by correlative X-ray µ-CT and EBSD analyses
![3D Material Picture](/fileadmin/_processed_/a/f/csm_Jo___ens_etal_2017_c362bc8675.png)
Reaction-induced porosity and onset of low-temperature carbonation in abyssal peridotites: insights from 3D high-resolution microtomography
![LEEm picture](/fileadmin/_processed_/5/6/csm_Hoecker_at_al_2016_418270a1c3.png)
Growth and structure of ultrathin praseodymium oxide layers on ruthenium (0001)
![xps spectra](/fileadmin/_processed_/9/c/csm_Ahrens_et_al_2016-falta_ceee9a0640.png)
Isotropic thin PTCDA films on GaN(0001)
![3D Material Picture](/fileadmin/_processed_/4/6/csm_Kahl_etal_2016_adcfef54cf.png)
A new X-ray-transparent flow-through reaction cell for a μ-CT-based concomitant surveillance of the reaction progress of hydrothermal mineral–fluid interactions
![Electron Microscopy Figure](/fileadmin/_processed_/3/2/csm_Mueller_etal_2014_63c3582317.png)
Atomic electric fields revealed by a quantum mechanical approach to electron picodiffraction
![Electron Microscopy Figure](/fileadmin/_processed_/6/f/csm_Rosenauer_etal_2014_7352b53bed.png)