
Jesper Wallentin
Associate Professor, Coordinator Photons

Our research concerns the intersection of nanoscience and X-ray science. We use X-rays to investigate nanostructured devices, and we develop nanostructures as X-ray detectors. We have a strong collaboration with the Nanomax beamline at MAX IV, and we also visit other synchrotrons for experiments.
We can offer many kinds of different MSc and BSc thesis projects, focusing on X-ray analysis, data analysis or nanofabrication.
For more information, please see my home page:
http://www.sljus.lu.se/staff/jesper-wallentin/
Publications
Displaying of publications. Sorted by year, then title.
A versatile laboratory setup for high resolution X-ray phase contrast tomography and scintillator characterization
Hanna Dierks, Philip Stjärneblad, Jesper Wallentin
(2023) Journal of X-Ray Science and Technology, 31 p.1-12
Journal articleThree-dimensional in situ imaging of single-grain growth in polycrystalline In2O3:Zr films
Dmitry Dzhigaev, Yury Smirnov, Pierre Alexis Repecaud, Lucas Atila Bernardes Marçal, Giovanni Fevola, et al.
(2022) Communications Materials, 3
Journal article3D X-ray microscopy with a CsPbBr3 nanowire scintillator
Hanna Dierks, Zhaojun Zhang, Nils Lamers, Jesper Wallentin
(2022) Nano Research
Journal articleCompositional analysis of oxide-embedded III-V nanostructures
Martin Ek, Leon Petersson, Jesper Wallentin, David Wahlqvist, Aylin Ahadi, et al.
(2022) Nanotechnology, 33
Journal articleIn situ imaging of temperature-dependent fast and reversible nanoscale domain switching in a single-crystal perovskite
Lucas A.B. Marçal, Dmitry Dzhigaev, Zhaojun Zhang, Ella Sanders, Amnon Rothman, et al.
(2022) Physical Review Materials, 6
Journal articlePerovskite-Compatible Electron-Beam-Lithography Process Based on Nonpolar Solvents for Single-Nanowire Devices
Nils Lamers, Zhaojun Zhang, Jesper Wallentin
(2022) ACS Applied Nano Materials, 5 p.3177-3182
Journal articleFree-Standing Metal Halide Perovskite Nanowire Arrays with Blue-Green Heterostructures
Zhaojun Zhang, Nils Lamers, Chen Sun, Crispin Hetherington, Ivan G. Scheblykin, et al.
(2022) Nano Letters, 22 p.2941-2947
Journal articleOptical demonstration of crystallography and reciprocal space using laser diffraction from Au microdisc arrays
Lert Chayanun, Johan Gustafson, Jesper Wallentin
(2022) Journal of Applied Crystallography, 55 p.168-171
Journal articleSingle-Crystalline Perovskite Nanowire Arrays for Stable X-ray Scintillators with Micrometer Spatial Resolution
Zhaojun Zhang, Hanna Dierks, Nils Lamers, Chen Sun, Klára Nováková, et al.
(2022) ACS Applied Nano Materials, 5 p.881-889
Journal articleX-ray in-line holography and holotomography at the NanoMAX beamline
Sebastian Kalbfleisch, Yuhe Zhang, Maik Kahnt, Khachiwan Buakor, Max Langer, et al.
(2022) Journal of Synchrotron Radiation, 29 p.224-229
Journal articleOff-axis multilayer zone plate with 16 nm × 28 nm focus for high-resolution X-ray beam induced current imaging
Jakob Soltau, Lert Chayanun, Mikhail Lyubomirskiy, Jesper Wallentin, Markus Osterhoff
(2021) Journal of Synchrotron Radiation, 28 p.1573-1582
Journal articleInducing ferroelastic domains in single-crystal CsPbBr3 perovskite nanowires using atomic force microscopy
Lucas A.B. Marçal, Sandra Benter, Austin Irish, Dmitry Dzhigaev, Eitan Oksenberg, et al.
(2021) Physical Review Materials, 5
Journal articleThree-dimensional coherent x-ray diffraction imaging of ferroelastic domains in single CsPbBr3 perovskite nanoparticles
D Dzhigaev, Z Zhang, L A B Marçal, S Sala, A Björling, et al.
(2021) New Journal of Physics, 23
Journal articleVertically Aligned CsPbBr3 Nanowire Arrays with Template-Induced Crystal Phase Transition and Stability
Zhaojun Zhang, Klara Suchan, Jun Li, Crispin Hetherington, Alexander Kiligaridis, et al.
(2021) Journal of Physical Chemistry C, 125 p.4860-4868
Journal articleThree-Dimensional Coherent Bragg Imaging of Rotating Nanoparticles
Alexander Björling, Lucas A.B. Marçal, José Solla-Gullón, Jesper Wallentin, Dina Carbone, et al.
(2020) Physical Review Letters, 125
Journal articleExperimental optimization of X-ray propagation-based phase contrast imaging geometry
Hanna Dierks, Jesper Wallentin
(2020) Optics Express, 28 p.29562-29575
Journal articleHigh resolution strain mapping of a single axially heterostructured nanowire using scanning X-ray diffraction
Susanna Hammarberg, Vilgailė Dagytė, Lert Chayanun, Megan O. Hill, Alexander Wyke, et al.
(2020) Nano Research, 13 p.2460-2468
Journal articleUltrafast Optical Generation of Coherent Bright and Dark Surface Phonon Polaritons in Nanowires
Pierre-Adrien Mante, Sebastian Lehmann, Daniel Finkelstein Shapiro, Kayin Lee, Jesper Wallentin, et al.
(2020) ACS Photonics, 7 p.1923-1931
Journal articleStrain mapping inside an individual processed vertical nanowire transistor using scanning X-ray nanodiffraction
Dmitry Dzhigaev, Johannes Svensson, Abinaya Krishnaraja, Zhongyunshen Zhu, Zhe Ren, et al.
(2020) Nanoscale, 12 p.14487-14493
Journal articleDirect Three-Dimensional Imaging of an X-ray Nanofocus Using a Single 60 nm Diameter Nanowire Device
Lert Chayanun, Lukas Hrachowina, Alexander Björling, Magnus T. Borgström, Jesper Wallentin
(2020) Nano Letters, 20 p.8326-8331
Journal articleIn Situ Imaging of Ferroelastic Domain Dynamics in CsPbBr3Perovskite Nanowires by Nanofocused Scanning X-ray Diffraction
Lucas A.B. Marçal, Eitan Oksenberg, Dmitry Dzhigaev, Susanna Hammarberg, Amnon Rothman, et al.
(2020) ACS Nano, 14 p.15973-15982
Journal articleCombining Nanofocused X-Rays with Electrical Measurements at the NanoMAX Beamline
Lert Chayanun, Susanna Hammarberg, Hanna Dierks, Gaute Otnes, Alexander Björling, et al.
(2019) Crystals, 9
Journal articleCharacterization of Nanowire Devices Using Nano-Focused X-Ray Beams
Jesper Wallentin
(2019) 2019 Compound Semiconductor Week, CSW 2019 - Proceedings
Conference paperNanoscale mapping of carrier collection in single nanowire solar cells using X-ray beam induced current
Lert Chayanun, Gaute Otnes, Andrea Troian, Susanna Hammarberg, Damien Salomon, et al.
(2019) Journal of Synchrotron Radiation
Journal articleSimultaneous Growth of Pure Wurtzite and Zinc Blende Nanowires
Sebastian Lehmann, Jesper Wallentin, Erik K. Mårtensson, Martin Ek, Knut Deppert, et al.
(2019) Nano Letters, 19 p.2723-2730
Journal articleSpectrally resolved x-ray beam induced current in a single InGaP nanowire
Lert Chayanun, Vilgaile Dagyte, Andrea Troian, Damien Salomon, Magnus Borgström, et al.
(2018) Nanotechnology, 29
Journal articleNanobeam X-ray Fluorescence Dopant Mapping Reveals Dynamics of in Situ Zn-Doping in Nanowires
Andrea Troian, Gaute Otnes, Xulu Zeng, Lert Chayanun, Vilgaile Dagyte, et al.
(2018) Nano Letters , p.6461-6468
Journal articleSimulated sample heating from a nanofocused X-ray beam
Harald Wallander, Jesper Wallentin
(2017) Journal of Synchrotron Radiation, 24 p.925-933
Journal articleBending and Twisting Lattice Tilt in Strained Core-Shell Nanowires Revealed by Nanofocused X-ray Diffraction
Jesper Wallentin, Daniel Jacobsson, Markus Osterhoff, Magnus T. Borgström, Tim Salditt
(2017) Nano Letters, 17 p.4143-4150
Journal articleHolographic imaging with a hard x-ray nanoprobe : Ptychographic versus conventional phase retrieval
A. L. Robisch, J. Wallentin, A. Pacureanu, P. Cloetens, T. Salditt
(2016) Optics Letters, 41 p.5519-5522
Journal articleStrategies to obtain pattern fidelity in nanowire growth from large-area surfaces patterned using nanoimprint lithography
Gaute Otnes, Magnus Heurlin, Mariusz Graczyk, Jesper Wallentin, Daniel Jacobsson, et al.
(2016) Nano Research, 9 p.2852-2861
Journal articleConfinement effects on Brillouin scattering in semiconductor nanowire photonic crystal
Pierre Adrien Mante, Nicklas Anttu, Wei Zhang, Jesper Wallentin, I. Ju Chen, et al.
(2016) Physical Review B, 94
Journal articleBragg coherent x-ray diffractive imaging of a single indium phosphide nanowire
D. Dzhigaev, A. Shabalin, T. Stankevič, U. Lorenz, R. P. Kurta, et al.
(2016) Journal of Optics, 18
Journal articleIn Operando X-Ray Nanodiffraction Reveals Electrically Induced Bending and Lattice Contraction in a Single Nanowire Device
Jesper Wallentin, Markus Osterhoff, Tim Salditt
(2016) Advanced Materials, 28 p.1788-1792
Journal articleTowards multi-order hard X-ray imaging with multilayer zone plates
Markus Osterhoff, Christian Eberl, Florian Döring, Robin N. Wilke, Jesper Wallentin, et al.
(2015) Journal of Applied Crystallography, 48 p.116-124
Journal articleProcessing and characterization of nanowire arrays for photodetectors
Vishal Jain, J. Wallentin, A. Nowzari, M. Heurlin, D. Asoli, et al.
(2015) Nano-Structures for Optics and Photonics : Optical Strategies for Enhancing Sensing, Imaging, Communication and Energy Conversion , p.511-512
Book chapterCarrier Recombination Dynamics in Sulfur-Doped InP Nanowires.
Wei Zhang, Sebastian Lehmann, Kilian Mergenthaler, Jesper Wallentin, Magnus Borgström, et al.
(2015) Nano Letters, 15 p.7238-7244
Journal articlePhoton upconversion in degenerately sulfur doped InP nanowires.
Kilian Mergenthaler, Sebastian Lehmann, J Wallentin, Wei Zhang, Magnus Borgström, et al.
(2015) Nanoscale, 7 p.20503-20509
Journal articleSimultaneous high-resolution scanning Bragg contrast and ptychographic imaging of a single solar cell nanowire
Jesper Wallentin, Robin N. Wilke, Markus Osterhoff, Tim Salditt
(2015) Journal of Applied Crystallography, 48 p.1818-1826
Journal articleProgress on multi-order hard x-ray imaging with multilayer zone plates
Markus Osterhoff, Florian Döring, Christian Eberl, Robin Wilke, Jesper Wallentin, et al.
(2015) X-Ray Nanoimaging : Instruments and Methods II, 9592
Conference paperBulk-like transversal electron mobility in heavily n-doped InP nanowires probed by terahertz spectroscopy
H. Nemec, C. S. Ponseca, J. Wallentin, N. Anttu, J. P. Beech, et al.
(2014) 2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2014
Conference paperHigh-flux ptychographic imaging using the new 55 μm-pixel detector 'Lambda' based on the Medipix3 readout chip
R. N. Wilke, J. Wallentin, M. Osterhoff, D. Pennicard, A. Zozulya, et al.
(2014) Acta Crystallographica Section A: Foundations and Advances, 70 p.552-562
Journal articleHard X-ray Detection Using a Single nm Diameter Nanowire
Jesper Wallentin, Markus Osterhoff, Robin N. Wilke, Karl-Magnus Persson, Lars-Erik Wernersson, et al.
(2014) Nano Letters, 14 p.7071-7076
Journal articleAu-Seeded Growth of Vertical and in-Plane III-V Nanowires on Graphite Substrates.
Jesper Wallentin, Dominik Kriegner, Julian Stangl, Magnus Borgström
(2014) Nano Letters, 14 p.1707-1713
Journal articleStudy of photocurrent generation in InP nanowire-based p(+)-i-n(+) photodetectors
Vishal Jain, Ali Nowzari, Jesper Wallentin, Magnus Borgström, Maria Messing, et al.
(2014) Nano Reseach, 7 p.544-552
Journal articleBulk-like transverse electron mobility in an array of heavily n-doped InP nanowires probed by terahertz spectroscopy
Carlito Ponseca, H. Nemec, Jesper Wallentin, Nicklas Anttu, Jason Beech, et al.
(2014) Physical Review B (Condensed Matter and Materials Physics), 90
Journal articleFluorescent Nanowire Heterostructures as a Versatile Tool for Biology Applications
Karl Adolfsson, Henrik Persson, Jesper Wallentin, Stina Oredsson, Lars Samuelson, et al.
(2013) Nano Letters, 13 p.4728-4732
Journal articleStructural investigation of GaInP nanowires using X-ray diffraction
D. Kriegner, J. M. Persson, T. Etzelstorfer, Daniel Jacobsson, Jesper Wallentin, et al.
(2013) Thin Solid Films, 543 p.100-105
Journal articleCurrent−Voltage Characterization of Individual As-Grown Nanowires Using a Scanning Tunneling Microscope
Rainer Timm, Olof Persson, David Engberg, Alexander Fian, James Webb, et al.
(2013) Nano Letters, 13 p.5182-5189
Journal articleSolid-liquid-vapor metal-catalyzed etching of lateral and vertical nanopores.
Jesper Wallentin, Knut Deppert, Magnus Borgström
(2013) Nanotechnology, 24
Journal articlePhotoluminescence study of Zn-doped wurtzite InP core-shell nanowires
Jesper Wallentin, Magnus Borgström, Lars Samuelson, Mitsuru Ekawa, Kenichi Kawaguchi
(2013) Applied Physics Letters, 102
Journal articleSemiconductor-Oxide Heterostructured Nanowires Using Postgrowth Oxidation.
Jesper Wallentin, Martin Ek, Neimantas Vainorius, Kilian Mergenthaler, Lars Samuelson, et al.
(2013) Nano Letters, 13 p.5961-5966
Journal articleInP Nanowire Array Solar Cells Achieving 13.8% Efficiency by Exceeding the Ray Optics Limit.
Jesper Wallentin, Nicklas Anttu, Damir Asoli, Maria Huffman, Ingvar Aberg, et al.
(2013) Science, 339 p.1057-1060
Journal articleA General Approach for Sharp Crystal Phase Switching in InAs, GaAs, InP, and GaP Nanowires Using Only Group V Flow.
Sebastian Lehmann, Jesper Wallentin, Daniel Jacobsson, Knut Deppert, Kimberly Dick Thelander
(2013) Nano Letters, 13 p.4099-4105
Journal articleTransparently Wrap-Gated Semiconductor Nanowire Arrays For Studies Of Gate-Controlled Photoluminescence
Gustav Nylund, Kristian Storm, Henrik Torstensson, Jesper Wallentin, Magnus Borgström, et al.
(2013) Physics of Semiconductors, 1566 p.427-428
Conference paperLarge-energy-shift photon upconversion in degenerately doped InP nanowires by direct excitation into the electron gas
Kilian Mergenthaler, Azhar Iqbal, Jesper Wallentin, Sebastian Lehmann, Magnus Borgström, et al.
(2013) Nano Reseach, 6 p.752-757
Journal articleElectron Trapping in InP Nanowire FETs with Stacking Faults.
Jesper Wallentin, Martin Ek, Reine Wallenberg, Lars Samuelson, Magnus Borgström
(2012) Nano Letters, 12 p.151-155
Journal articleSingle GaInP nanowire p-i-n junctions near the direct to indirect bandgap crossover point
Jesper Wallentin, Laura Barrutia Poncela, Anna M. Jansson, Kilian Mergenthaler, Martin Ek, et al.
(2012) Applied Physics Letters, 100
Journal articleParticle-assisted GaxIn1-xP nanowire growth for designed bandgap structures
Daniel Jacobsson, J. M. Persson, D. Kriegner, T. Etzelstorfer, Jesper Wallentin, et al.
(2012) Nanotechnology, 23
Journal articleSurface Chemistry, Structure, and Electronic Properties from Microns to the Atomic Scale of Axially Doped Semiconductor Nanowires.
Martin Hjort, Jesper Wallentin, Rainer Timm, Alexei Zakharov, Ulf Håkanson, et al.
(2012) ACS Nano
Journal articleElectrical and optical properties of InP nanowire ensemble p(+)-i-n(+) photodetectors.
Håkan Pettersson, Irina Zubritskaya, Ngo Tuan Nghia, Jesper Wallentin, Magnus Borgström, et al.
(2012) Nanotechnology, 23
Journal articleTunnel Field-Effect Transistors Based on InP-GaAs Heterostructure Nanowires.
Bahram Ganjipour, Jesper Wallentin, Magnus Borgström, Lars Samuelson, Claes Thelander
(2012) ACS Nano, 6 p.3109-3113
Journal articleInP Nanowire mm2-sized Solar Cells with 3.8% Efficiency
Jesper Wallentin, Peter Kailuweit, Gerald Siefer, Peter Wickert
(2012)
Conference paper: abstractGaInP Nanowire p-i-n Junctions with Electroluminescence at 569 nm near the Direct to Indirect Bandgap Crossover
Jesper Wallentin, Laura Barrutia Poncela, Daniel Jacobsson, Anna M Jansson, Kilian Mergenthaler, et al.
(2012)
Conference paper: abstractElectron Trapping in InP Nanowire FETs with Stacking Faults
Jesper Wallentin, Martin Ek, Reine Wallenberg
(2012)
Conference paper: abstractAtomic Surface Structure and Electronic Properties of Semiconductor Nanowires Studied by Scanning Tunneling Microscopy and Spectroscopy
Rainer Timm, Martin Hjort, Olof Persson, Johan Knutsson, Sebastian Lehmann, et al.
(2012)
Conference paper: abstractA comparative study of nanowire-based infrared p+-i-n+ photodetectors
Jesper Wallentin, Magnus Borgström, Kristian Storm, Lars Landin, Peter Wickert, et al.
(2012)
Conference paper: abstractGrowth of doped InAsyP1-y nanowires with InP shells
Jesper Wallentin, Maria Messing, Erik Trygg, Lars Samuelson, Knut Deppert, et al.
(2011) Journal of Crystal Growth, 331 p.8-14
Journal articleFabrication and characterization of AlP-GaP core-shell nanowires
Magnus Borgström, Kilian Mergenthaler, Maria Messing, Ulf Håkanson, Jesper Wallentin, et al.
(2011) Journal of Crystal Growth, 324 p.290-295
Journal articleNanowires With Promise for Photovoltaics
Magnus Borgström, Jesper Wallentin, Magnus Heurlin, Stefan Falt, Peter Wickert, et al.
(2011) IEEE Journal of Selected Topics in Quantum Electronics, 17 p.1050-1061
Journal articleProbing the Wurtzite Conduction Band Structure Using State Filling in Highly Doped InP Nanowires.
Jesper Wallentin, Kilian Mergenthaler, Martin Ek, Reine Wallenberg, Lars Samuelson, et al.
(2011) Nano Letters, 11 p.2286-2290
Journal articleGate-Induced Fermi Level Tuning in InP Nanowires at Efficiency Close to the Thermal Limit.
Kristian Storm, Gustav Nylund, Magnus Borgström, Jesper Wallentin, Carina Fasth, et al.
(2011) Nano Letters, 11 p.1127-1130
Journal articleDynamics of extremely anisotropic etching of InP nanowires by HCl
Magnus Borgström, Jesper Wallentin, Kenichi Kawaguchi, Lars Samuelson, Knut Deppert
(2011) Chemical Physics Letters, 502 p.222-224
Journal articleA New Route toward Semiconductor Nanospintronics: Highly Mn-Doped GaAs Nanowires Realized by Ion-Implantation under Dynamic Annealing Conditions
Christian Borschel, Maria Messing, Magnus Borgström, Waldomiro Paschoal, Jesper Wallentin, et al.
(2011) Nano Letters, 11 p.3935-3940
Journal articleDegenerate p-doping of InP nanowires for large area tunnel diodes
Jesper Wallentin, Peter Wickert, Martin Ek, Anders Gustafsson, Reine Wallenberg, et al.
(2011) Applied Physics Letters, 99
Journal articleDoping profile of InP nanowires directly imaged by photoemission electron microscopy
Martin Hjort, Jesper Wallentin, Rainer Timm, Alexei Zakharov, Jesper N Andersen, et al.
(2011) Applied Physics Letters, 99
Journal articleUnit cell parameters of wurtzite InP nanowires determined by x-ray diffraction
D. Kriegner, E. Wintersberger, K. Kawaguchi, Jesper Wallentin, Magnus Borgström, et al.
(2011) Nanotechnology, 22
Journal articleDual-gate induced InP nanowire diode
Kristian Storm, Gustav Nylund, Magnus Borgström, Jesper Wallentin, Carina Fasth, et al.
(2011) Physics of Semiconductors: 30th International Conference on the Physics of Semiconductors, 1399 p.279-280
Conference paperPhotovoltaics with piezoelectric core-shell nanowires
Fredrik Boxberg, Niels Sondergard, Hongqi Xu, Jesper Wallentin, Aizi Jin, et al.
(2011) Physics of Semiconductors: 30th International Conference on the Physics of Semiconductors, 1399 p.469-470
Conference paperDoping of semiconductor nanowires
Jesper Wallentin, Magnus Borgström
(2011) Journal of Materials Research, 26 p.2142-2156
Journal article reviewA new route towards semiconductor nanospintronics: highly Mn - doped GaAs nanowires realized by ion - implantation under dynamic annealing conditions.
C Borschel, Maria Messing, Kilian Mergenthaler, Magnus Borgström, Waldomiro Paschoal, et al.
(2011)
Conference paperChanges in Contact Angle of Seed Particle Correlated with Increased Zincblende Formation in Doped InP Nanowires.
Jesper Wallentin, Martin Ek, Reine Wallenberg, Lars Samuelson, Knut Deppert, et al.
(2010) Nano Letters, 10 p.4807-4812
Journal articleIn Situ Etching for Total Control Over Axial and Radial Nanowire Growth
Magnus Borgström, Jesper Wallentin, Johanna Trägårdh, Peter Ramvall, Martin Ek, et al.
(2010) Nano Reseach, 3 p.264-270
Journal articleNanowires with promise for photovoltaics, growth and characterisation
Magnus Borgström, Jesper Wallentin, Johanna Trägårdh, Knut Deppert, Lars Samuelson, et al.
(2010)
Conference paperStructure, mechanics and conductivity of semiconductor nanowires using scanning tunneling microscopy
Rainer Timm, Martin Hjort, A Fian, Magnus Borgström, Jesper Wallentin, et al.
(2010)
Conference paperHigh performance single nanowire tunnel diodes
Jesper Wallentin, Johan Persson, Jakob Wagner, Knut Deppert, Lars Samuelson, et al.
(2010)
Conference paperHigh-Performance Single Nanowire Tunnel Diodes.
Jesper Wallentin, Johan M. Persson, Jakob B. Wagner, Lars Samuelson, Knut Deppert, et al.
(2010) Nano Letters, 10 p.974-979
Journal articleVertical dual wrapgated-induced field effect diode
Kristian Storm, Gustav Nylund, Magnus Borgström, Jesper Wallentin, Carina Fasth, et al.
(2010)
Conference paperNanowires for concentrator photovoltaics
Jesper Wallentin, Magnus Borgström, Lars Samuelson, Knut Deppert
(2010)
Conference paper