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Article ; Online: New insights into correlated materials in the time domain-combining far-infrared excitation with x-ray probes at cryogenic temperatures.

Mankowsky, Roman / Sander, Mathias / Zerdane, Serhane / Vonka, Jakub / Bartkowiak, Marek / Deng, Yunpei / Winkler, Rafael / Giorgianni, Flavio / Matmon, Guy / Gerber, Simon / Beaud, Paul / Lemke, Henrik Till

Journal of physics. Condensed matter : an Institute of Physics journal

2021 Volume 33, Issue 37

Abstract: Modern techniques for the investigation of correlated materials in the time domain combine selective excitation in the THz frequency range with selective probing of coupled structural, electronic and magnetic degrees of freedom using x-ray scattering ... ...

Abstract	Modern techniques for the investigation of correlated materials in the time domain combine selective excitation in the THz frequency range with selective probing of coupled structural, electronic and magnetic degrees of freedom using x-ray scattering techniques. Cryogenic sample temperatures are commonly required to prevent thermal occupation of the low energy modes and to access relevant material ground states. Here, we present a chamber optimized for high-field THz excitation and (resonant) x-ray diffraction at sample temperatures between 5 and 500 K. Directly connected to the beamline vacuum and featuring both a Beryllium window and an in-vacuum detector, the chamber covers the full (2-12.7) keV energy range of the femtosecond x-ray pulses available at the Bernina endstation of the SwissFEL free electron laser. Successful commissioning experiments made use of the energy tunability to selectively track the dynamics of the structural, magnetic and orbital order of Ca
Language	English
Publishing date	2021-07-09
Publishing country	England
Document type	Journal Article
ZDB-ID	1472968-4
ISSN	1361-648X ; 0953-8984
ISSN (online)	1361-648X
ISSN	0953-8984
DOI	10.1088/1361-648X/ac08b5
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Article ; Online: The effect of leukocyte reduction filters on inflammatory mediator release during coronary artery bypass grafting.

Bartkowiak, Marek / Bugajski, Paweł / Siminiak, Tomasz / Kalawski, Ryszard

Kardiologia polska

2013 Volume 71, Issue 9, Page(s) 945–950

Abstract: Background: Extracorporeal circulation used during coronary artery bypass grafting triggers systemic inflammatory response with neutrophil activation which adversely affects ischaemic/reperfused myocardium. One method of myocardial protection during ... ...

Abstract	Background: Extracorporeal circulation used during coronary artery bypass grafting triggers systemic inflammatory response with neutrophil activation which adversely affects ischaemic/reperfused myocardium. One method of myocardial protection during cardiac surgery is the use of blood cardioplegia. Its protective effect is related to cardiac cooling and metabolism reduction, oxygen supply from erythrocytes, and reactive oxygen species scavenging. However, blood cardioplegia is also associated with myocardial damage induced by undesirable morphotic blood elements. Aim: To evaluate the effect of the use of leukocyte reduction filters on the activity of polymorphonuclear neutrophils (PMN) in patients undergoing surgical myocardial revascularisation. PMN activity was evaluated based on measurements of plasma activity of granulocyte enzymes, lysozyme and beta-glucuronidase. Methods: We studied 40 patients who underwent myocardial revascularisation using extracorporeal circulation. Patients were randomly assigned to two equal groups: in Group I, blood cardioplegia was administered using leukocyte reduction filters, and in Group II, leukocyte reduction filters were not used for blood cardioplegia. Measurements were performed in plasma of arterial and coronary sinus blood samples collected before aortic clamping, immediately after unclamping, and after 25 min of reperfusion. In addition, blood cardioplegic solution samples were collected in Group I from the lines proximal and distal to the filter during first and last administration. Plasma levels of lysozyme and beta-glucuronidase were determined using previously described methods. Results: We found a significant decrease in PMN count in filtered blood cardioplegic solution during its first administration (0.27 ± 0.07 G/L) compared to samples collected before filter passage (1.73 ± 0.049 G/L). Also during last administration, PMN count in filtered blood cardioplegic solution was decreased compared to samples collected before filter passage (0.66 ± 0.35 G/L vs. 3.64 ± 1.14 G/L, respectively). Significantly lower (p < 0.02) plasma beta-glucuronidase levels were found in arterial blood samples in Group I compared to Group II (5.59 ± 1.63 μg/mL immediately after aortic unclamping and 6.59 ± 1.98 μg/mL after 25 min of reperfusion in Group I vs. 10.19 ± 2.66 and 12.83 ± 1.88 μg/mL, respectively, in Group II). Beta-glucuronidase levels in coronary sinus blood samples collected after aortic unclamping and at the end of reperfusion were significantly higher in Group II compared to Group I (p < 0.04). In Group I, plasma lysozyme levels in arterial and venous blood samples did not show significant changes during the surgery. In contrast, plasma lysozyme level in coronary sinus blood samples at the end of reperfusion in Group II was significantly higher compared to that in pre-clamping samples (p < 0.014). Conclusions: With the use of leukocyte reduction filters, we found significantly lower beta-glucuronidase levels in arterial and coronary sinus blood samples. These findings seem to confirm reduced PMN activation and/or reduced myocardial infiltration by activated PMN. Plasma levels of lysozyme, a characteristic product of PMN degranulation, did not show significant differences between the study groups.
MeSH term(s)	Aged ; Cardioplegic Solutions/administration & dosage ; Coronary Artery Bypass/methods ; Extracorporeal Circulation ; Female ; Glucuronidase/blood ; Humans ; Inflammation Mediators/blood ; Leukocyte Reduction Procedures ; Male ; Middle Aged ; Muramidase/blood ; Myocardial Ischemia/blood ; Myocardial Ischemia/immunology ; Myocardial Ischemia/therapy ; Myocardial Reperfusion ; Myocardium/metabolism ; Neutrophil Activation ; Neutrophils/immunology ; Protective Agents/administration & dosage
Chemical Substances	Cardioplegic Solutions ; Inflammation Mediators ; Protective Agents ; Muramidase (EC 3.2.1.17) ; Glucuronidase (EC 3.2.1.31)
Language	English
Publishing date	2013
Publishing country	Poland
Document type	Journal Article ; Randomized Controlled Trial
ZDB-ID	411492-9
ISSN	1897-4279 ; 0022-9032
ISSN (online)	1897-4279
ISSN	0022-9032
DOI	10.5603/KP.2013.0230
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Article ; Online: Commissioning of the novel Continuous Angle Multi-energy Analysis spectrometer at the Paul Scherrer Institut.

The Review of scientific instruments

2023 Volume 94, Issue 2, Page(s) 23302

Abstract: We report on the commissioning results of the cold neutron multiplexing secondary spectrometer CAMEA (Continuous Angle Multi-Energy Analysis) at the Swiss Spallation Neutron Source at the Paul Scherrer Institut, Switzerland. CAMEA is optimized for ... ...

Abstract	We report on the commissioning results of the cold neutron multiplexing secondary spectrometer CAMEA (Continuous Angle Multi-Energy Analysis) at the Swiss Spallation Neutron Source at the Paul Scherrer Institut, Switzerland. CAMEA is optimized for efficient data acquisition of scattered neutrons in the horizontal scattering plane, allowing for detailed and rapid mapping of low-energy excitations under extreme sample environment conditions.
Language	English
Publishing date	2023-03-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/5.0128226
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Book ; Online: Non-destructive X-ray imaging of patterned delta-layer devices in silicon

D'Anna, Nicolò / Sanchez, Dario Ferreira / Matmon, Guy / Bragg, Jamie / Constantinou, Procopios C. / Stock, Taylor J. Z. / Fearn, Sarah / Schofield, Steven R. / Curson, Neil J. / Bartkowiak, Marek / Soh, Y. / Grolimund, Daniel / Gerber, Simon / Aeppli, Gabriel

2022

Abstract: The progress of miniaturisation in integrated electronics has led to atomic and nanometre-sized dopant devices in silicon. Such structures can be fabricated routinely by hydrogen resist lithography, using various dopants such as phosphorous and arsenic. ... ...

Abstract	The progress of miniaturisation in integrated electronics has led to atomic and nanometre-sized dopant devices in silicon. Such structures can be fabricated routinely by hydrogen resist lithography, using various dopants such as phosphorous and arsenic. However, the ability to non-destructively obtain atomic-species-specific images of the final structure, which would be an indispensable tool for building more complex nano-scale devices, such as quantum co-processors, remains an unresolved challenge. Here we exploit X-ray fluorescence to create an element-specific image of As dopants in silicon, with dopant densities in absolute units and a resolution limited by the beam focal size (here $\sim1~\mu$m), without affecting the device's low temperature electronic properties. The As densities provided by the X-ray data are compared to those derived from Hall effect measurements as well as the standard non-repeatable, scanning tunnelling microscopy and secondary ion mass spectroscopy, techniques. Before and after the X-ray experiments, we also measured the magneto-conductance, dominated by weak localisation, a quantum interference effect extremely sensitive to sample dimensions and disorder. Notwithstanding the $1.5\times10^{10}$ Sv ($1.5\times10^{16}$ Rad/cm$^{-2}$) exposure of the device to X-rays, all transport data were unchanged to within experimental errors, corresponding to upper bounds of 0.2 Angstroms for the radiation-induced motion of the typical As atom and 3$\%$ for the loss of activated, carrier-contributing dopants. With next generation synchrotron radiation sources and more advanced optics, we foresee that it will be possible to obtain X-ray images of single dopant atoms within resolved radii of 5 nm.
Keywords	Quantum Physics ; Condensed Matter - Materials Science ; Condensed Matter - Strongly Correlated Electrons
Subject code	530
Publishing date	2022-08-19
Publishing country	us
Document type	Book ; Online
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Article ; Online: Mitral valve repair in a patient with previous percutaneous annuloplasty with a CARILLON device.

Bartkowiak, Marek / Bugajski, Pawel / Jedlinski, Ireneusz / Kalawski, Ryszard

Interactive cardiovascular and thoracic surgery

2011 Volume 12, Issue 6, Page(s) 1054–1056

Abstract: A 67-year-old female patient was referred to our clinic for coronary artery bypass graft and severe mitral regurgitation (MR) treatment. The patient had a history of coronary disease and MR treated in 2007 with a CARILLON device. Left mammary and ... ...

Abstract	A 67-year-old female patient was referred to our clinic for coronary artery bypass graft and severe mitral regurgitation (MR) treatment. The patient had a history of coronary disease and MR treated in 2007 with a CARILLON device. Left mammary and saphenous vein were used to graft the diseased coronaries. MR was corrected with a saddle ring; however, we had some difficulties anchoring ring sutures to the mitral annulus caused by the protruding CARILLON. The ring was finally stitched, and the patient was weaned from bypass. A transoesophageal echo showed a competent valve. The patient was transferred to the intensive care unit on moderate catecholamines.
MeSH term(s)	Aged ; Coronary Angiography ; Coronary Artery Bypass ; Coronary Artery Disease/complications ; Coronary Artery Disease/diagnosis ; Coronary Artery Disease/surgery ; Echocardiography, Transesophageal ; Fatal Outcome ; Female ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/instrumentation ; Humans ; Mitral Valve/surgery ; Mitral Valve Annuloplasty/instrumentation ; Mitral Valve Insufficiency/complications ; Mitral Valve Insufficiency/diagnosis ; Mitral Valve Insufficiency/surgery ; Prosthesis Design ; Reoperation ; Suture Techniques ; Treatment Outcome
Language	English
Publishing date	2011-06
Publishing country	England
Document type	Case Reports ; Journal Article
ZDB-ID	2095298-3
ISSN	1569-9285 ; 1569-9293
ISSN (online)	1569-9285
ISSN	1569-9293
DOI	10.1510/icvts.2010.262196
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Article ; Online: Z

Cho, Chang-Woo / Shen, Junying / Lyu, Jian / Atanov, Omargeldi / Chen, Qianxue / Lee, Seng Huat / Hor, Yew San / Gawryluk, Dariusz Jakub / Pomjakushina, Ekaterina / Bartkowiak, Marek / Hecker, Matthias / Schmalian, Jörg / Lortz, Rolf

Nature communications

2020 Volume 11, Issue 1, Page(s) 3056

Abstract: A state of matter with a multi-component order parameter can give rise to vestigial order. In the vestigial phase, the primary order is only partially melted, leaving a remaining symmetry breaking behind, an effect driven by strong classical or quantum ... ...

Abstract	A state of matter with a multi-component order parameter can give rise to vestigial order. In the vestigial phase, the primary order is only partially melted, leaving a remaining symmetry breaking behind, an effect driven by strong classical or quantum fluctuations. Vestigial states due to primary spin and charge-density-wave order have been discussed in iron-based and cuprate materials. Here we present the observation of a partially melted superconductivity in which pairing fluctuations condense at a separate phase transition and form a nematic state with broken Z
Language	English
Publishing date	2020-06-16
Publishing country	England
Document type	Journal Article
ZDB-ID	2553671-0
ISSN	2041-1723 ; 2041-1723
ISSN (online)	2041-1723
ISSN	2041-1723
DOI	10.1038/s41467-020-16871-9
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Book ; Online: Microscopic evidence for anisotropic multigap superconductivity in the CsV$_3$Sb$_5$ kagome superconductor

Gupta, Ritu / Das, Debarchan / Mielke III, Charles Hillis / Guguchia, Zurab / Shiroka, Toni / Baines, Christopher / Bartkowiak, Marek / Luetkens, Hubertus / Khasanov, Rustem / Yin, Qiangwei / Tu, Zhijun / Gong, Chunsheng / Lei, Hechang

2021

Abstract: The recently discovered kagome superconductor CsV$_3$Sb$_5$ ($T_c \simeq 2.5$ K) has been found to host charge order as well as a non-trivial band topology, encompassing multiple Dirac points and probable surface states. Such a complex and ... ...

Abstract	The recently discovered kagome superconductor CsV$_3$Sb$_5$ ($T_c \simeq 2.5$ K) has been found to host charge order as well as a non-trivial band topology, encompassing multiple Dirac points and probable surface states. Such a complex and phenomenologically rich system is, therefore, an ideal playground for observing unusual electronic phases. Here, we report on microscopic studies of its anisotropic superconducting properties by means of transverse-field muon spin rotation ($\mu$SR) experiments. The temperature dependences of the in-plane and out-of-plane components of the magnetic penetration depth $\lambda_{ab}^{-2}(T)$ and $\lambda_{c}^{-2}(T)$ indicate that the superconducting order parameter exhibits a two-gap ($s+s$)-wave symmetry, reflecting the multiple Fermi surfaces of CsV3Sb5. The multiband nature of its superconductivity is further validated by the different temperature dependences of the anisotropic magnetic penetration depth $\gamma_\lambda(T)$ and upper critical field $\gamma_{\rm B_{c2}}(T)$, both in close analogy with the well known two-gap superconductor MgB$_2$. Remarkably, the high value of the $T_c/\lambda^{-2}(0)$ ratio in both field orientations strongly suggests the unconventional nature of superconductivity. The relaxation rates obtained from zero field $\mu$SR experiments do not show noticeable change across the superconducting transition, indicating that superconductivity does not break time reversal symmetry. Comment: 9 pages, 4 figures
Keywords	Condensed Matter - Superconductivity ; Condensed Matter - Materials Science ; Condensed Matter - Strongly Correlated Electrons
Subject code	530 ; 539
Publishing date	2021-08-03
Publishing country	us
Document type	Book ; Online
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Article ; Online: CAMEA--A novel multiplexing analyzer for neutron spectroscopy.

Groitl, Felix / Graf, Dieter / Birk, Jonas Okkels / Markó, Márton / Bartkowiak, Marek / Filges, Uwe / Niedermayer, Christof / Rüegg, Christian / Rønnow, Henrik M

The Review of scientific instruments

2016 Volume 87, Issue 3, Page(s) 35109

Abstract: The analyzer detector system continuous angle multiple energy analysis will be installed on the cold-neutron triple-axis spectrometer RITA-2 at SINQ, PSI. CAMEA is optimized for efficiency in the horizontal scattering plane enabling rapid and detailed ... ...

Abstract	The analyzer detector system continuous angle multiple energy analysis will be installed on the cold-neutron triple-axis spectrometer RITA-2 at SINQ, PSI. CAMEA is optimized for efficiency in the horizontal scattering plane enabling rapid and detailed mapping of excitations. As a novelty the design employs a series of several sequential upward scattering analyzer arcs. Each arc is set to a different, fixed, final energy and scatters neutrons towards position sensitive detectors. Thus, neutrons with different final energies are recorded simultaneously over a large angular range. In a single data-acquisition many entire constant-energy lines in the horizontal scattering plane are recorded for a quasi-continuous angular coverage of about 60°. With a large combined coverage in energy and momentum, this will result in a very efficient spectrometer, which will be particularly suited for parametric studies under extreme conditions with restrictive sample environments (high field magnets or pressure cells) and for small samples of novel materials. In this paper we outline the concept and the specifications of the instrument currently under construction.
Language	English
Publishing date	2016-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/1.4943208
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Article ; Online: Tuning magnetic spirals beyond room temperature with chemical disorder.

Morin, Mickaël / Canévet, Emmanuel / Raynaud, Adrien / Bartkowiak, Marek / Sheptyakov, Denis / Ban, Voraksmy / Kenzelmann, Michel / Pomjakushina, Ekaterina / Conder, Kazimierz / Medarde, Marisa

Nature communications

2016 Volume 7, Page(s) 13758

Abstract: In the past years, magnetism-driven ferroelectricity and gigantic magnetoelectric effects have been reported for a number of frustrated magnets featuring ordered spiral magnetic phases. Such materials are of high-current interest due to their potential ... ...

Abstract	In the past years, magnetism-driven ferroelectricity and gigantic magnetoelectric effects have been reported for a number of frustrated magnets featuring ordered spiral magnetic phases. Such materials are of high-current interest due to their potential for spintronics and low-power magnetoelectric devices. However, their low-magnetic ordering temperatures (typically <100 K) greatly restrict their fields of application. Here we demonstrate that the onset temperature of the spiral phase in the perovskite YBaCuFeO
Language	English
Publishing date	2016-12-16
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2553671-0
ISSN	2041-1723 ; 2041-1723
ISSN (online)	2041-1723
ISSN	2041-1723
DOI	10.1038/ncomms13758
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Article ; Online: Duża bezobjawowa torbiel osierdzia w okolicy koniuszka serca.

Jedliński, Ireneusz / Jamrozek-Jedlińska, Maria / Bugajski, Paweł / Bartkowiak, Marek / Słomczyński, Marek / Poprawski, Kajetan

Kardiologia polska

2012 Volume 70, Issue 5, Page(s) 522–523

Abstract: We presented a case of the large asymptomatic pericardial cyst localised near cardiac apex, filled with fluid of water- -equivalent density. The cyst was detected accidentally during transthoracic echocardiography and confirmed by 64-slice multi- ... ...

Title translation	A large asymptomatic pericardial cyst in the apical region.
Abstract	We presented a case of the large asymptomatic pericardial cyst localised near cardiac apex, filled with fluid of water- -equivalent density. The cyst was detected accidentally during transthoracic echocardiography and confirmed by 64-slice multi-detector computed tomography. Repeated transthoracic echocardiography was recommened.
MeSH term(s)	Echocardiography ; Female ; Humans ; Mediastinal Cyst/diagnostic imaging ; Middle Aged ; Tomography, X-Ray Computed
Language	Polish
Publishing date	2012
Publishing country	Poland
Document type	Case Reports ; Journal Article
ZDB-ID	411492-9
ISSN	1897-4279 ; 0022-9032
ISSN (online)	1897-4279
ISSN	0022-9032
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