Mingjian Wu

Dr. Mingjian Wu

Department Werkstoffwissenschaften (WW)
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Raum 01.138
Cauerstraße 3
91058 Erlangen

Biography

I studied Materials Science and obtained Bachelor (2007) and Master (2009) degrees in Hunan University, Changsha, China. Afterwards, I moved to Berlin, Germany and worked at Paul-Drude-Institute for solid state electronics with Dr. Achim Trampert on the topic of structural phase stability in III-V semiconductors. With top honor grade „summa cum laude“, I obtained doctor degree (Dr. rer. nat.) in Humboldt Universitaet zu Berlin in 2014. After a short stay in Finland, I joined the Institute of Micro- and Nanostructure Research at FAU in 2015. I am currently staff scientist at the institute, with roles as
+ scientific advisor in various projects offering advanced electron microscopy/spectroscopy expertise.
+ facility supervisor/manager of a double Cs-corrected, monochromated Titan Themis and a probe corrected Spectra 200 TEMs..

My research interest lies at interfaces of functional nano materials and the relationship to their properties. I offer comprehensive expertise in micro- and nano-analytics in the field of materials science and nanotechnology, with more than a decade experience in development and application of advanced and in situ microscopy techniques. I maintain a solid track record working closely together with materials scientists in fields of growth/synthesis, spectroscopy/scattering and theory/simulation.

My current research topics covers the following aspects:
+ high-resolution imaging and spectroscopy of nano-structured materials and devices
+ diffraction-based methods, 4D-STEM and big data analysis routines
+ in situ electron microscopy techniques and novel preparation methods
+ phase contrast electron microscopy techniques (for revealing nanoscale electrostatic and magnetic fields)
+ extended defects in nano-structured semiconductors, metals and thin films
+ nano-particulate systems, nano-alloys and intermetallics
+ beam-sensitive organic/inorganic materials for photovoltaic and optoelectronics

Besides, I also offer teaching activities in the following curricular
+ Electron Microscopy I (Master course; at winter semesters, responsible for exercises: 2 ECTS)
+ Electron Microscopy II (at summer semesters, responsible for lecture & exercise: 5 ECTS total)
+ Lab course of Nanotechnology (Master level lab course at winter semesters: 2 ECTS)

Publications

2022

Fritsch B., Wu M., Hutzler A., Zhou D., Spruit R., Vogl L., Will J., Pérez Garza H., März M., Jank M., Spiecker E.:
Sub-Kelvin thermometry for evaluating the local temperature stability within in situ TEM gas cells
In: Ultramicroscopy 235 (2022), S. 113494
ISSN: 0304-3991
DOI: 10.1016/j.ultramic.2022.113494
URL: https://doi.org/10.1088/1361-6528/ab8a8c
BibTeX: Download
Fritsch B., Zech T., Bruns M., Körner A., Khadivianazar S., Wu M., Zargar Talebi N., Virtanen S., Unruh T., Jank M., Spiecker E., Hutzler A.:
Radiolysis‐Driven Evolution of Gold Nanostructures – Model Verification by Scale Bridging In Situ Liquid‐Phase Transmission Electron Microscopy and X‐Ray Diffraction
In: Advanced Science (2022), S. 2202803
ISSN: 2198-3844
DOI: 10.1002/advs.202202803
BibTeX: Download
Harreiß C., Langner S., Wu M., Berlinghof M., Rechberger S., Will J., Conroy M., Bangert U., Unruh T., Brabec C., Spiecker E.:
Understanding and Controlling the Evolution of Nanomorphology and Crystallinity of Organic Bulk-Heterojunction Blends with Solvent Vapor Annealing
In: Solar RRL (2022)
ISSN: 2367-198X
DOI: 10.1002/solr.202200127
BibTeX: Download
Hawly T., Johnson M., Späth A., Nickles Jäkel H., Wu M., Spiecker E., Watts B., Nefedov A., Fink R.:
Exploring the Preparation Dependence of Crystalline 2D-Extended Ultrathin C8-BTBT-C8 Films
In: ACS Applied Materials and Interfaces (2022)
ISSN: 1944-8244
DOI: 10.1021/acsami.2c00097
BibTeX: Download
Wang R., Jiang Y., Gruber W., He Y., Wu M., Weitz P., Zhang K., Lüer L., Forberich K., Unruh T., Spiecker E., Deibel C., Li N., Brabec C.:
Tailoring the Nature of Interface States in Efficient and Stable Bilayer Organic Solar Cells by a Transfer-Printing Technique
In: Advanced Materials Interfaces (2022)
ISSN: 2196-7350
DOI: 10.1002/admi.202200342
BibTeX: Download
Wu M., Harreiß C., Ophus C., Johnson M., Fink R., Spiecker E.:
Seeing structural evolution of organic molecular nano-crystallites using 4D scanning confocal electron diffraction (4D-SCED)
In: Nature Communications 13 (2022), Art.Nr.: 2911
ISSN: 2041-1723
DOI: 10.1038/s41467-022-30413-5
BibTeX: Download

2021

Ahmad R., Saddiqi NuH., Wu M., Prato M., Spiecker E., Peukert W., Distaso M.:
Phase evolution of Cu2ZnSnS4 (CZTS) nanoparticles from in situ formed binary sulphides under solvothermal conditions
In: Crystengcomm (2021)
ISSN: 1466-8033
DOI: 10.1039/d0ce01566k
BibTeX: Download
Eggeler Y., Kubacka D., Pichler P., Wu M., Spiecker E.:
Intrinsic nano-diffusion-couple for studying high temperature diffusion in multi-component superalloys
In: Scripta Materialia 192 (2021), S. 120-124
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2020.10.002
BibTeX: Download
Fritsch B., Hutzler A., Wu M., Khadivianazar S., Vogl L., Jank MPM., März M., Spiecker E.:
Accessing local electron-beam induced temperature changes during in situ liquid-phase transmission electron microscopy
In: Nanoscale Advances 3 (2021), S. 2466 - 2474
ISSN: 2516-0230
DOI: 10.1039/D0NA01027H
URL: https://pubs.rsc.org/en/content/articlelanding/2021/NA/D0NA01027H
BibTeX: Download
Fritsch B., Hutzler A., Wu M., Vogl L., Jank MP., März M., Spiecker E.:
Beam-induced heating at low electron fluxes during liquid phase transmission electron microscopy
In: Microscopy and Microanalysis 27 (2021), S. 1040-1042
ISSN: 1431-9276
DOI: 10.1017/S1431927621003937
BibTeX: Download
Fritsch B., Hutzler A., Wu M., Vogl L., Jank MPM., März M., Spiecker E.:
Evaluating local temperature changes during liquid cell transmission electron microscopy by in situ parallel beam electron diffraction
Virtual Early Career European Microscopy Congress 2020 (Kopenhagen, November 24, 2020 - November 26, 2020)
In: Proceedings of the European Microscopy Congress 2020 2021
DOI: 10.22443/rms.emc2020.253
URL: https://www.emc2020.eu/abstract/evaluating-local-temperature-changes-during-liquid-cell-transmission-electron-microscopy-by-emin-situnbspemparallel-beam-electron-diffraction.html
BibTeX: Download
Harreiß C., Wu M., Langner S., Rechberger S., Will J., Brabec C., Spiecker E.:
Correlative relationship between nanomorphology, crystallinity, texture and device efficiency of organic BHJ solar cells studied by energy-filtered TEM
In: Microscopy and Microanalysis 27 (2021), S. 390-392
ISSN: 1431-9276
DOI: 10.1017/S1431927621001938
BibTeX: Download
Herre P., Will J., Dierner M., Wang D., Yokosawa T., Zech T., Wu M., Przybilla T., Romeis S., Unruh T., Peukert W., Spiecker E.:
Rapid fabrication and interface structure of highly faceted epitaxial Ni-Au solid solution nanoparticles on sapphire
In: Acta Materialia 220 (2021), S. 117318
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2021.117318
BibTeX: Download
Hutzler A., Fritsch B., Branscheid R., Wu M., Jank M., Spiecker E.:
Direct Manipulation of Nanostructures Utilizing Donut-Shaped Potential Wells during Liquid-Phase Transmission Electron Microscopy
Virtual Early Career European Microscopy Congress 2020
DOI: 10.22443/rms.emc2020.158
BibTeX: Download
Johnson M., Hawly T., Wu M., Spiecker E., Fink R.:
Structural characterization of alpha,omega-DH6T monolayer films grown at the liquid-liquid interface
In: Soft Matter (2021)
ISSN: 1744-683X
DOI: 10.1039/d1sm01072g
BibTeX: Download
Pusch L., Brox R., Scheuer K., Yokosawa T., Wu M., Apeleo Zubiri B., Spiecker E., Jandt KD., Fischer D., Hackstein H.:
Distinct endocytosis and immune activation of poly lactic-co-glycolic acid nanoparticles prepared by single- and double-emulsion evaporation
In: Nanomedicine 16 (2021), S. 2075-2094
ISSN: 1743-5889
DOI: 10.2217/nnm-2021-0022
BibTeX: Download
Will J., Wierzbicka E., Wu M., Götz K., Yokosawa T., Liu N., Tesler A., Stiller M., Unruh T., Altomare M., Schmuki P., Spiecker E.:
Hydrogenated anatase TiO2 single crystals: defects formation and structural changes as microscopic origin of co-catalyst free photocatalytic H2 evolution activity
In: Journal of Materials Chemistry A (2021)
ISSN: 2050-7488
DOI: 10.1039/D1TA04809K
BibTeX: Download
Wirth J., Apeleo Zubiri B., Wu M., Englisch S., Drobek D., Taccardi N., Wasserscheid P., Spiecker E.:
Correlative 3D nanotomography and in situ transmission electron microscopy studies on supported catalytically active liquid metal solutions
European Microscopy Congress 2020
DOI: 10.22443/rms.emc2020.287
BibTeX: Download
Wirth J., Englisch S., Drobek D., Apeleo Zubiri B., Wu M., Taccardi N., Raman N., Wasserscheid P., Spiecker E.:
Unraveling Structural Details in Ga-Pd SCALMS Systems Using Correlative Nano-CT, 360° Electron Tomography and Analytical TEM
In: Catalysts (2021)
ISSN: 2073-4344
DOI: 10.3390/catal11070810
URL: https://www.mdpi.com/2073-4344/11/7/810
BibTeX: Download

2020

Ahmad R., Saddiqi NuH., Wu M., Prato M., Spiecker E., Peukert W., Distaso M.:
Effect of the Counteranion on the Formation Pathway of Cu2ZnSnS4 (CZTS) Nanoparticles under Solvothermal Conditions
In: Inorganic Chemistry 59 (2020), S. 1973-1984
ISSN: 0020-1669
DOI: 10.1021/acs.inorgchem.9b03338
BibTeX: Download
Dong Y., Wang YK., Yuan F., Johnston A., Liu Y., Ma D., Choi MJ., Chen B., Chekini M., Baek SW., Sagar LK., Fan J., Hou Y., Wu M., Lee S., Sun B., Hoogland S., Quintero-Bermudez R., Ebe H., Todorovic P., Dinic F., Li P., Kung HT., Saidaminov M., Kumacheva E., Spiecker E., Liao LS., Voznyy O., Lu ZH., Sargent EH.:
Bipolar-shell resurfacing for blue LEDs based on strongly confined perovskite quantum dots
In: Nature Nanotechnology (2020)
ISSN: 1748-3387
DOI: 10.1038/s41565-020-0714-5
BibTeX: Download
Lenz M., Wu M., He J., Makineni SK., Gault B., Raabe D., Neumeier S., Spiecker E.:
Atomic Structure and Chemical Composition of Planar Fault Structures in Co-Base Superalloys
14th International Symposium on Superalloys, Superalloys 2021 (Seven Springs, PA, September 12, 2021 - September 16, 2021)
In: Sammy Tin, Mark Hardy, Justin Clews, Jonathan Cormier, Qiang Feng, John Marcin, Chris O'Brien, Akane Suzuki (Hrsg.): Minerals, Metals and Materials Series 2020
DOI: 10.1007/978-3-030-51834-9_90
BibTeX: Download
Lenz M., Wu M., Spiecker E.:
Segregation-assisted climb of Frank partial dislocations: An alternative route to superintrinsic stacking faults in L12-hardened superalloys
In: Acta Materialia 191 (2020), S. 270-279
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2020.03.056
BibTeX: Download
Lin W., Greve C., Härtner S., Götz K., Walter J., Wu M., Rechberger S., Spiecker E., Busch S., Schmutzler T., Avadhut Y., Hartmann M., Unruh T., Peukert W., Segets D.:
Unraveling Complexity: A Strategy for the Characterization of Anisotropic Core Multishell Nanoparticles
In: Particle & Particle Systems Characterization (2020)
ISSN: 0934-0866
DOI: 10.1002/ppsc.202000145
BibTeX: Download
Wierzbicka E., Altomare M., Wu M., Liu N., Yokosawa T., Fehn D., Qin S., Meyer K., Unruh T., Spiecker E., Palmisano L., Bellardita M., Will J., Schmuki P.:
Reduced Grey Brookite for Noble Metal Free Photocatalytic H2 Evolution
In: Journal of Materials Chemistry A (2020)
ISSN: 2050-7488
DOI: 10.1039/D0TA09066B
BibTeX: Download
Wittkämper H., Maisel S., Wu M., Frisch J., Wilks RG., Grabau M., Spiecker E., Bär M., Görling A., Steinrück HP., Papp C.:
Oxidation induced restructuring of Rh-Ga SCALMS model catalyst systems
In: Journal of Chemical Physics 153 (2020), S. 104702-
ISSN: 0021-9606
DOI: 10.1063/5.0021647
BibTeX: Download

2019

Hou Y., Xie C., Radmilovic VV., Puscher B., Wu M., Heumüller T., Karl A., Li N., Tang X., Meng W., Chen S., Osvet A., Guldi DM., Spiecker E., Radmilovic VR., Brabec C.:
Assembling Mesoscale-Structured Organic Interfaces in Perovskite Photovoltaics
In: Advanced Materials 31 (2019), Art.Nr.: 1806516
ISSN: 0935-9648
DOI: 10.1002/adma.201806516
BibTeX: Download
Killilea NA., Wu M., Sytnyk M., Yousefi Amin AA., Mashkov O., Spiecker E., Heiß W.:
Pushing PbS/Metal‐Halide‐Perovskite Core/Epitaxial‐Ligand‐Shell Nanocrystal Photodetectors beyond 3 µm Wavelength
In: Advanced Functional Materials 29 (2019), Art.Nr.: 1807964
ISSN: 1616-301X
DOI: 10.1002/adfm.201807964
BibTeX: Download
Luna E., Wu M., Aoki T., McCartney MR., Puustinen J., Hilska J., Guina M., Smith DJ., Trampert A.:
Impact of Bi incorporation on the evolution of microstructure during growth of low-temperature GaAs:Bi/Ga(As,Bi) layers
In: Journal of Applied Physics 126 (2019), Art.Nr.: 085305
ISSN: 0021-8979
DOI: 10.1063/1.5111532
BibTeX: Download
Raman N., Maisel S., Grabau M., Taccardi N., Debuschewitz J., Wolf M., Wittkämper H., Bauer T., Wu M., Haumann M., Papp C., Görling A., Spiecker E., Libuda J., Steinrück HP., Wasserscheid P.:
Highly Effective Propane Dehydrogenation Using Ga-Rh Supported Catalytically Active Liquid Metal Solutions
In: ACS Catalysis (2019), S. 9499-9507
ISSN: 2155-5435
DOI: 10.1021/acscatal.9b02459
BibTeX: Download
Tafel A., Wu M., Spiecker E., Hommelhoff P., Ristein J.:
Fabrication and structural characterization of diamond-coated tungsten tips
In: Diamond and Related Materials 97 (2019), Art.Nr.: 107446
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2019.107446
BibTeX: Download
Vogl L., Schweizer P., Wu M., Spiecker E.:
Transforming layered MoS2 into functional MoO2 nanowires
In: Nanoscale 11 (2019), S. 11687-11695
ISSN: 2040-3364
DOI: 10.1039/c9nr03346g
BibTeX: Download
Wergen L., Domaschke M., Herre P., Wu M., Spiecker E., Peukert W.:
Aerosol synthesis of germanium nanoparticles supported by external seeding: Theoretical and experimental analysis
In: Journal of Aerosol Science 128 (2019), S. 50-61
ISSN: 0021-8502
DOI: 10.1016/j.jaerosci.2018.11.013
BibTeX: Download
Wu M., Grabau M., Taccardi N., Papp C., Steinrück HP., Wasserscheid P., Spiecker E.:
Advanced and In-Situ Electron Microscopy Investigation of Phase Composition and Phase Transformation in Ga-Rh Liquid Metal Catalysts
In: Microscopy and Microanalysis 25 (2019), S. 1878-1879
ISSN: 1431-9276
DOI: 10.1017/S1431927619010122
BibTeX: Download
Wu M., Tafel A., Hommelhoff P., Spiecker E.:
Determination of 3D electrostatic field at an electron nano-emitter
In: Applied Physics Letters 114 (2019), S. 013101
ISSN: 0003-6951
DOI: 10.1063/1.5055227
URL: http://aip.scitation.org/doi/10.1063/1.5055227
BibTeX: Download
Wu M., Tafel A., Hommelhoff P., Spiecker E.:
Three-Dimensional Electrostatic Field at an Electron Nano-Emitter Determined by Differential Phase Contrast in Scanning Transmission Electron Microscopy
In: Microscopy and Microanalysis 25 (2019), S. 74-75
ISSN: 1431-9276
DOI: 10.1017/S1431927619001107
BibTeX: Download

2015

Luna E., Wu M., Puustinen J., Guina M., Trampert A.:
Spontaneous formation of nanostructures by surface spinodal decomposition in GaAs1-xBix epilayers
In: Journal of Applied Physics 117 (2015), Art.Nr.: 185302
ISSN: 1089-7550
DOI: 10.1063/1.4919896
BibTeX: Download
Wu M., Hanke M., Luna E., Puustinen J., Guina M., Trampert A.:
Detecting lateral composition modulation in dilute Ga(As, Bi) epilayers
In: Nanotechnology 26 (2015), S. 425701
ISSN: 0957-4484
DOI: 10.1088/0957-4484/26/42/425701
BibTeX: Download
Wu M., Trampert A., Al-Zoubi T., Benyoucef M., Reithmaier JP.:
Interface structure and strain state of InAs nano-clusters embedded in silicon
In: Acta Materialia 90 (2015), S. 133-139
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2015.02.042
BibTeX: Download

2014

Benyoucef M., Al-Zoubi T., Reithmaier JP., Wu M., Trampert A.:
Nanostructured hybrid material based on highly mismatched III-V nanocrystals fully embedded in silicon
In: physica status solidi (a) 211 (2014), S. 817-822
ISSN: 1862-6300
DOI: 10.1002/pssa.201330395
BibTeX: Download
Grandal J., Wu M., Kong X., Hanke M., Dimakis E., Geelhaar L., Riechert H., Trampert A.:
Plan-view transmission electron microscopy investigation of GaAs/(In,Ga)As core-shell nanowires
In: Applied Physics Letters 105 (2014)
ISSN: 0003-6951
DOI: 10.1063/1.4896505
BibTeX: Download
Wang K., Gu Y., Zhou HF., Zhang L., Kang CZ., Wu M., Pan W., Lu PF., Gong Q., Wang S.:
InPBi single crystals grown by molecular beam epitaxy
In: Scientific Reports 4 (2014), Art.Nr.: 5449
ISSN: 2045-2322
DOI: 10.1038/srep05449
BibTeX: Download
Wu M., Erwin SC., Trampert A.:
Atomistic structure and energetics of GdN clusters in Gd-doped GaN
In: Acta Materialia 76 (2014), S. 87-93
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2014.05.009
BibTeX: Download
Wu M., Luna E., Puustinen J., Guina M., Trampert A.:
Formation and phase transformation of Bicontaining QD-like clusters in annealed GaAsBi
In: Nanotechnology 25 (2014)
ISSN: 0957-4484
DOI: 10.1088/0957-4484/25/20/205605
BibTeX: Download
Wu M., Luna E., Puustinen J., Guina M., Trampert A.:
Observation of atomic ordering of triple-period-A and -B type in GaAsBi
In: Applied Physics Letters 105 (2014), S. 041602
ISSN: 0003-6951
DOI: 10.1063/1.4891854
BibTeX: Download

2013

Puustinen J., Wu M., Luna E., Schramm A., Laukkanen P., Laitinen M., Sajavaara T., Guina M.:
Variation of lattice constant and cluster formation in GaAsBi
In: Journal of Applied Physics 114 (2013), Art.Nr.: 243504
ISSN: 0021-8979
DOI: 10.1063/1.4851036
BibTeX: Download
Wu M., Erwin SC., Trampert A.:
Coherent clustering of GdN in epitaxial GaN:Gd thin film
2013 MRS Spring Meeting (San Francisco, CA)
DOI: 10.1557/opl.2013.930
BibTeX: Download
Wu M., Trampert A.:
Coherent GdN clusters in epitaxial GaN:Gd thin films determined by transmission electron microscopy
In: Nanotechnology 24 (2013), S. 255701
ISSN: 0957-4484
DOI: 10.1088/0957-4484/24/25/255701
BibTeX: Download

Mingjian Wu

Dr. Mingjian Wu

Biography

Publications