Jan Kehres

Jan Kehres

Research Engineer

DTU PHYSICS
Department of Physics

Technical University of Denmark

Fysikvej

Building 307, room 208

2800 Kgs. Lyngby

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2019
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Evolution of intermetallic GaPd2/SiO2 catalyst and optimization for methanol synthesis at ambient pressure

Fiordaliso, Elisabetta M. ; Sharafutdinov, Irek ; Carvalho, Hudson W. P. ; Kehres, Jan ; Grunwaldt, Jan-D. ; Chorkendorff, Ib ; Damsgaard, Christian D.
in: Science and Technology of Advanced Materials, vol: 20, issue: 1, pages: 521-531

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1080/14686996.2019.1603886

 

Intrinsic XRF corrections in Timepix3 CdTe spectral detectors

Khalil, M. ; Turecek, D. ; Jakubek, J. ; Kehres, J. ; Dreier, E. S. ; Olsen, U. L.
in: Journal of Instrumentation, vol: 14, issue: 1

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1088/1748-0221/14/01/C01018

 

Laser ablation of high-aspect-ratio hole arrays in tungsten for X-ray applications

Silvestre, Chantal M. ; Hemmingsen, Jens H. ; Dreier, Erik S. ; Kehres, Jan ; Hansen, Ole
in: Microelectronic Engineering, vol: 209, pages: 60-65

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1016/j.mee.2019.03.007

 

Virtual subpixel approach for single-mask phase-contrast imaging using Timepix3

Dreier, E.S. ; Silvestre, C. ; Kehres, J. ; Turecek, D. ; Khalil, M. ; Hemmingsen, J.H. ; Hansen, O. ; Jakubek, J. ; Feidenhans'l, R. ; Olsen, U.L.
in: Journal of Instrumentation, vol: 14, issue: 01
Presented at:
20th International Workshop on Radiation Imaging Detectors

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1088/1748-0221/14/01/C01011

2018
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Simulation tools for scattering corrections in spectrally resolved X-ray Computed Tomography using McXtrace

Busi, Matteo ; Olsen, Ulrik L. ; Knudsen, Erik B. ; Frisvad, Jeppe R. ; Kehres, Jan ; Dreier, Erik S.
in: Optical Engineering, vol: 57, issue: 3

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/1.OE.57.3.037105

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Spectral correction algorithm for multispectral CdTe x-ray detectors

Dreier, Erik Schou ; Kehres, Jan ; Khalil, Mohamad ; Busi, Matteo ; Gu, Yun ; Feidenhans'l, Robert Krarup ; Olsen, Ulrik Lund
in: Optical Engineering, vol: 57, issue: 5

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/1.OE.57.5.054117

 

Subpixel resolution in CdTe Timepix3 pixel detectors

Khalil, Mohamad ; Dreier, Erik Schou ; Kehres, Jan ; Jakubek, Jan ; Olsen, Ulrik Lund
in: Journal of Synchrotron Radiation, vol: 25, issue: 6, pages: 1650-1657

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1107/S1600577518013838

2017
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A METHOD OF SECURITY SCANNING OF CARRY-ON ITEMS, AND A CARRY-ON ITEMS SECURITY SCANNING SYSTEM

Poulsen, Henning Friis ; Olsen, Ulrik Lund ; Kehres, Jan
Patent no.: WO2017005757, Date: 2017-01-12

Type: Patent

Status: Published     |    Year: 2017

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A Monte Carlo simulation of scattering reduction in spectral x-ray computed tomography

Busi, Matteo ; Olsen, Ulrik Lund ; Bergbäck Knudsen, Erik ; Frisvad, Jeppe Revall ; Kehres, Jan ; Christensen, Erik D. ; Khalil, Mohamad ; Haldrup, Kristoffer
part of: Advances in Computational Methods for X-Ray Optics IV, 2017, SPIE - International Society for Optical Engineering
Presented at:
SPIE Optics + Photonics 2017

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1117/12.2273763

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Detector response artefacts in spectral reconstruction

Olsen, Ulrik Lund ; Christensen, Erik D. ; Khalil, Mohamad ; Gu, Yun ; Kehres, Jan
part of: Proc. SPIE 10391, Developments in X-Ray Tomography XI, 2017, SPIE - International Society for Optical Engineering
Presented at:
SPIE Optics + Photonics 2017

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1117/12.2272564

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Microfabrication of grating for X-ray phase contrast imaging

Silvestre, Chantal ; Hemmingsen, Jens H. ; Christensen, Erik Dreier ; Kehres, Jan ; Hansen, Ole
part of: Book of Abstracts, Sustain 2017, 2017, Technical University of Denmark (DTU)
Presented at:
Sustain 2017

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    Year: 2017

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Microfabrication of gratings for X-ray Imaging

Silvestre, Chantal ; Christiansen, Erik D. ; Zeng, Yi ; Kehres, Jan ; Jansen, Henri ; Hansen, Ole
Presented at:
43rd International conference on Micro and Nano Engineering

Type: Poster (Peer reviewed)

Status: Published     |    Year: 2017

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Spectral correction algorithm for multispectral CdTe x-ray detectors

Christensen, Erik D. ; Kehres, Jan ; Gu, Yun ; Feidenhans’l, Robert ; Olsen, Ulrik Lund
part of: Proc. SPIE 10403, Infrared Remote Sensing and Instrumentation XXV, 2017, SPIE - International Society for Optical Engineering
Presented at:
SPIE Optics + Photonics 2017

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1117/12.2272935

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Threat detection of liquid explosives and precursors from their x-ray scattering pattern using energy dispersive detector technology

Kehres, Jan ; Olsen, Ulrik Lund ; Lyksborg, Mark
part of: Proc. SPIE 10403, Infrared Remote Sensing and Instrumentation XXV, 2017, SPIE - International Society for Optical Engineering
Presented at:
SPIE Optics + Photonics 2017

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: https://doi.org/10.1117/12.2274519

2016
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Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scattering

Kehres, Jan ; Pedersen, Thomas ; Masini, Federico ; Andreasen, Jens Wenzel ; Nielsen, Martin Meedom ; Diaz, Ana ; Nielsen, Jane Hvolbæk ; Hansen, Ole ; Chorkendorff, Ib
in: Journal of Synchrotron Radiation, vol: 23, issue: 2, pages: 455-463

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: https://doi.org/10.1107/S1600577516001387

2015
 

Reduction of a Ni/Spinel Catalyst for Methane Reforming

Kehres, Jan ; Andreasen, Jens Wenzel ; Fløystad, Jostein Bø ; Liu, Haihua ; Molenbroek, Alfons ; Jakobsen, Jon Geest ; Chorkendorff, Ib ; Nielsen, Jane Hvolbæk ; Høydalsvik, Kristin ; Breiby, Dag Werner ; Vegge, Tejs
in: The Journal of Physical Chemistry Part C, vol: 119, issue: 3, pages: 1424–1432

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.1021/jp510159m

2014
 

Morphology Changes of Co Catalyst Nanoparticles at the Onset of Fischer-Tropsch Synthesis

Høydalsvik, Kristin ; Fløystad, Jostein B. ; Voronov, Alexey ; Voss, Georg J. B. ; Esmaeili, Morteza ; Kehres, Jan ; Granlund, Håvard ; Vainio, Ulla ; Andreasen, Jens Wenzel ; Rønning, Magnus ; Breiby, Dag Werner
in: The Journal of Physical Chemistry Part C, vol: 118, issue: 5, pages: 2399-2407

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.1021/jp4052193

2013
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Introducing a standard method for experimental determination of the solvent response in laser pump, x-ray probe time-resolved wide-angle x-ray scattering experiments on systems in solution

Kjær, Kasper Skov ; Brandt van Driel, Tim ; Kehres, Jan ; Haldrup, Martin Kristoffer ; Khakhulin, Dmitry ; Bechgaard, Klaus ; Cammarata, Marco ; Wulff, Michael ; Sørensen, Thomas Just ; Nielsen, Martin Meedom
in: Physical Chemistry Chemical Physics, vol: 15, issue: 36, pages: 15003-15016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2013     |    DOI: https://doi.org/10.1039/c3cp50751c

2012
 

Dynamical Properties of a Ru/MgAl2O4 Catalyst during Reduction and Dry Methane Reforming

Kehres, Jan ; Jakobsen, Jon Geest ; Andreasen, Jens Wenzel ; Wagner, Jakob Birkedal ; Liu, Haihua ; Molenbroek, Alfons ; Sehested, Jens ; Chorkendorff, Ib ; Vegge, Tejs
in: The Journal of Physical Chemistry Part C, vol: 116, pages: 21407−21415

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2012     |    DOI: https://doi.org/10.1021/jp3069656

2011
2010
 

Combined in situ small and wide angle X-ray scattering studies of TiO2 nano-particle annealing

Kehres, Jan
Presented at:
CONT Workshop for PhD students in Nanoscience

Type: Poster

Status: Published     |    Year: 2010

 

Combined in situ small and wide angle X-ray scattering studies of TiO2 nano-particle annealing

Kehres, Jan
Presented at:
40th Danish Crystallographers Meeting and 3rd DANSCATT Meeting

Type: Poster

Status: Published     |    Year: 2010

 

Combined in situ small and wide angle X-ray scattering studies of TiO2 nano-particle annealing to 1023 K

Kehres, Jan ; Andreasen, Jens Wenzel ; Krebs, Frederik C ; Molenbroek, A.M. ; Chorkendorff, Ib ; Vegge, Tejs
in: Journal of Applied Crystallography, vol: 43, issue: 6, pages: 1400-1408

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2010     |    DOI: https://doi.org/10.1107/S0021889810041907

 

Hydrogen rotational and translational diffusion in calcium borohydride from quasielastic neutron scattering and DFT

Blanchard, Didier ; Riktor, M.D. ; Maronsson, Jon Bergmann ; Jacobsen, Hjalte Sylvest ; Kehres, Jan ; Sveinbjörnsson, Daði Þorsteinn ; Gil Bardaji, E. ; Léon, A. ; Juranyi, F. ; Wuttke, J. ; Hauback, B.C. ; Fichtner, M. ; Vegge, Tejs
in: Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol: 114, issue: 47, pages: 20249-20257

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2010     |    DOI: https://doi.org/10.1021/jp107281v

2009
 
 

Small and wide angle in situ scattering with a rotating anode X-ray source

Andreasen, Jens Wenzel ; Kehres, Jan ; Pauw, Brian ; Nielsen, Martin Meedom
part of: Programme, Abstracts and Posters, pages: 265-266, 2009, SAS-2009 Organising Committee
Presented at:
XIV International Conference on Small-Angle Scattering

Type: Conference abstract in proceedings

Status: Published     |    Year: 2009