TY - JOUR AU - Basa, Péter AU - Fodor, B. AU - Nagy, Zs. AU - Oyunbolor, B. AU - Hajtman, A. AU - Bordács, Sándor AU - Kézsmárki, István AU - Halbritter, András Ernő AU - Orbánová, Agnesa TI - Analysis of malaria infection byproducts with Mueller matrix transmission ellipsometry JF - THIN SOLID FILMS J2 - THIN SOLID FILMS VL - 766 PY - 2023 SN - 0040-6090 DO - 10.1016/j.tsf.2022.139637 UR - https://m2.mtmt.hu/api/publication/33548398 ID - 33548398 N1 - Semilab Co. Ltd., Prielle K. u. 4/A, Budapest, 1117, Hungary Department of Physics, Budapest University of Technology and Economics, Budafoki út 8., Budapest, 1111, Hungary Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, Universitätsstraße 1, Augsburg, 86159, Germany Export Date: 21 March 2025; Cited By: 0; Correspondence Address: P. Basa; Semilab Co. Ltd., Budapest, Prielle K. u. 4/A, 1117, Hungary; email: peter.basa@semilab.hu; CODEN: THSFA AB - In this work, hemozoin, a microcrystalline byproduct of the malaria parasites was studied by transmission Mueller matrix ellipsometry. Measurement data was collected for different magnetic field orientations and as a function of the density of the hemozoin suspension. Our ellipsometric study demonstrates the magnetic alignment of the hemozoin crystals via the corresponding large linear birefringence and dichroism signals. These results reveal optical anisotropies of this material, which could be utilized for future optimization of detection schemes or optical instruments for diagnostic use. LA - English DB - MTMT ER - TY - JOUR AU - Preißinger, Katharina AU - Kézsmárki, István AU - Török, János TI - An automated neural network-based stage-specific malaria detection software using dimension reduction: The malaria microscopy classifier JF - METHODSX J2 - METHODSX VL - 10 PY - 2023 PG - 11 SN - 2215-0161 DO - 10.1016/j.mex.2023.102189 UR - https://m2.mtmt.hu/api/publication/33780709 ID - 33780709 N1 - Department of Applied Biotechnology and Food Sciences, BME, Budapest, 1111, Hungary Research Center for Natural Sciences, Institute of Enzymology, Budapest, 1111, Hungary Department of Physics, BME, Budapest, 1111, Hungary Department of Experimental Physics V, University of Augsburg, Augsburg, 86159, Germany Department of Theoretical Physics, Institute of Physics, BME, Műegyetem rkp. 3, Budapest, H-1111, Hungary MTA-BME Morphodynamics Research Group, BME, Budapest, 1111, Hungary Export Date: 5 May 2023 Correspondence Address: Katharina, P.; Department of Experimental Physics V, Germany; email: katharina.preissinger@physik.uni-augsburg.de LA - English DB - MTMT ER - TY - GEN AU - Peedu, L. AU - Kocsis, V. AU - Szaller, Dávid AU - Forrai, B. AU - Bordács, Sándor AU - Kézsmárki, István AU - Viirok, J. AU - Nagel, U. AU - Bernáth, Bence AU - Kamenskyi, D. L. AU - Miyata, A. AU - Portugall, O. AU - Tokunaga, Y. AU - Tokura, Y. AU - Taguchi, Y. AU - Rõõm, T. TI - Refining magnetic interactions from the magnetic field dependence of spin-wave excitations in magnetoelectric LiFePO4 PY - 2022 UR - https://m2.mtmt.hu/api/publication/33112501 ID - 33112501 LA - English DB - MTMT ER - TY - JOUR AU - Peedu, L. AU - Kocsis, V. AU - Szaller, Dávid AU - Forrai, B. AU - Bordács, Sándor AU - Kézsmárki, István AU - Viirok, J. AU - Nagel, U. AU - Bernáth, Bence AU - Kamenskyi, D.L. AU - Miyata, A. AU - Portugall, O. AU - Tokunaga, Y. AU - Tokura, Y. AU - Taguchi, Y. AU - Rõõm, T. TI - Terahertz spectroscopy of spin excitations in magnetoelectric LiFePO4 in high magnetic fields JF - PHYSICAL REVIEW B J2 - PHYS REV B VL - 106 PY - 2022 IS - 13 SN - 2469-9950 DO - 10.1103/PhysRevB.106.134413 UR - https://m2.mtmt.hu/api/publication/33189817 ID - 33189817 N1 - L.P., V.K., and D.S. contributed equally to this work. LA - English DB - MTMT ER - TY - JOUR AU - Petersen, T. AU - Prodan, L. AU - Tsurkan, V. AU - Krug, Von Nidda H.-A. AU - Kézsmárki, István AU - Rößler, U.K. AU - Hozoi, L. TI - How Correlations and Spin-Orbit Coupling Work within Extended Orbitals of Transition-Metal Tetrahedra of 4d/5d Lacunar Spinels JF - JOURNAL OF PHYSICAL CHEMISTRY LETTERS J2 - J PHYS CHEM LETT VL - 13 PY - 2022 IS - 7 SP - 1681 EP - 1686 PG - 6 SN - 1948-7185 DO - 10.1021/acs.jpclett.1c04100 UR - https://m2.mtmt.hu/api/publication/32716803 ID - 32716803 N1 - Institute for Theoretical Solid State Physics, Leibniz IFW Dresden, Helmholtzstraße 20, Dresden, D-01069, Germany Experimental Physics v, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, Augsburg, D-86159, Germany Institute of Applied Physics, Chişinǎu, MD 2028, Moldova Export Date: 3 March 2022 Correspondence Address: Petersen, T.; Institute for Theoretical Solid State Physics, Helmholtzstraße 20, Germany; email: t.petersen@ifw-dresden.de Correspondence Address: Hozoi, L.; Institute for Theoretical Solid State Physics, Helmholtzstraße 20, Germany; email: l.hozoi@ifw-dresden.de Correspondence Address: Kézsmárki, I.; Experimental Physics v, Germany; email: istvan.kezsmarki@physik.uni-augsburg.de LA - English DB - MTMT ER - TY - JOUR AU - Preißinger, Katharina AU - Kellermayer, Miklós AU - Vértessy, Beáta (Grolmuszné) AU - Kézsmárki, István AU - Török, János TI - Reducing data dimension boosts neural network-based stage-specific malaria detection JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 12 PY - 2022 IS - 1 PG - 14 SN - 2045-2322 DO - 10.1038/s41598-022-19601-x UR - https://m2.mtmt.hu/api/publication/33133343 ID - 33133343 AB - Although malaria has been known for more than 4 thousand years 1 , it still imposes a global burden with approx. 240 million annual cases 2 . Improvement in diagnostic techniques is a prerequisite for its global elimination. Despite its main limitations, being time-consuming and subjective, light microscopy on Giemsa-stained blood smears is still the gold-standard diagnostic method used worldwide. Autonomous computer assisted recognition of malaria infected red blood cells (RBCs) using neural networks (NNs) has the potential to overcome these deficiencies, if a fast, high-accuracy detection can be achieved using low computational power and limited sets of microscopy images for training the NN. Here, we report on a novel NN-based scheme that is capable of the high-speed classification of RBCs into four categories—healthy ones and three classes of infected ones according to the parasite age—with an accuracy as high as 98%. Importantly, we observe that a smart reduction of data dimension, using characteristic one-dimensional cross-sections of the RBC images, not only speeds up the classification but also significantly improves its performance with respect to the usual two-dimensional NN schemes. Via comparative studies on RBC images recorded by two additional techniques, fluorescence and atomic force microscopy, we demonstrate that our method is universally applicable for different types of microscopy images. This robustness against imaging platform-specific features is crucial for diagnostic applications. Our approach for the reduction of data dimension could be straightforwardly generalised for the classification of different parasites, cells and other types of objects. LA - English DB - MTMT ER - TY - JOUR AU - Thoma, Henrik AU - Hutanu, Vladimir AU - Dutta, Rajesh AU - Gukasov, Arsen AU - Kocsis, Vilmos AU - Tokunaga, Yusuke AU - Taguchi, Yasujiro AU - Tokura, Yoshinori AU - Kézsmárki, István AU - Roth, Georg AU - Angst, Manuel TI - Magnetic Order and Sign of the Dzyaloshinskii-Moriya Interaction in 2-D Antiferromagnet Ba2CoGe2O7 Under Applied Magnetic Field JF - IEEE TRANSACTIONS ON MAGNETICS J2 - IEEE T MAGN VL - 58 PY - 2022 IS - 2 PG - 5 SN - 0018-9464 DO - 10.1109/TMAG.2021.3082983 UR - https://m2.mtmt.hu/api/publication/32780100 ID - 32780100 N1 - Funding Agency and Grant Number: Tasso Springer Fellowship Program; Julich-Aachen Research Alliance (JARA) Funding text: The work was supported under the Tasso Springer Fellowship Program and the Julich-Aachen Research Alliance (JARA). AB - The Dzyaloshinskii-Moriya interaction (DMI), i.e., the antisymmetric part of the exchange coupling tensor, favors the perpendicular arrangement of magnetic moment, thus inducing canting in otherwise collinear structures. The DMI is the prerequisite for the emergence of weak ferromagnetism in antiferromagnets, but can stabilize twisted magnetic textures, such as spin spirals, soliton lattices, and magnetic skyrmions. While the magnitude of the DMI determines the canting angle of adjacent spins, its sign dictates the sense of the spin rotation. Based on focused polarized neutron diffraction (PND) study, combined with symmetry analysis, we determine the sign of the DMI in the unconventional multiferroic Ba2CoGe2O7 and reveal its detailed magnetic structure in magnetic fields applied in the tetragonal plane. As PND gives unique access to the scattering contribution from the phase-sensitive nuclear-magnetic interference, it is a valuable tool for a straightforward DMI sign determination in bulk materials and allows to disclose even very weak magnetic moments. Remarkably, the sign of the DMI could be determined from the PND measurement of a single reflection, which is demonstrated to be reliable for a large range of applied magnetic field directions and values. LA - English DB - MTMT ER - TY - JOUR AU - Arndt, L. AU - Koleala, T. AU - Orbánová, Agnesa AU - Ibam, C. AU - Lufele, E. AU - Timinao, L. AU - Lorry, L. AU - Butykai, Ádám AU - Kaman, P. AU - Molnár, Petra AU - Krohns, S. AU - Nate, E. AU - Kucsera, I. AU - Orosz, E. AU - Moore, B. AU - Robinson, L.J. AU - Laman, M. AU - Kézsmárki, István AU - Karl, S. TI - Magneto-optical diagnosis of symptomatic malaria in Papua New Guinea JF - NATURE COMMUNICATIONS J2 - NAT COMMUN VL - 12 PY - 2021 IS - 1 SN - 2041-1723 DO - 10.1038/s41467-021-21110-w UR - https://m2.mtmt.hu/api/publication/31902046 ID - 31902046 N1 - Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Export Date: 5 March 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: National Health and Medical Research Council, NHMRC, GNT1127356 Funding details: James Cook University, JCU Funding text 1: The authors would like to sincerely thank all study participants. We thank Yagaum Hospital and Madang Town Clinic staff for their collaboration in this research study. We would like to thank Professor William Pomat, Dr. Livingstone Tavul, the PNGIMR microscopy unit, and molecular parasitology and entomology laboratory staff for their support. We would like to thank Ivo Mueller and Louis Schofield for helpful discussions. S.Ka. (GNT1141441) and L.J.R. (GNT1161627) are recipients of an Australian National Health and Medical Research Council (NHMRC) Career Development Fellowship. This study was funded by NHMRC Project Grant (GNT1127356). L.T. is supported by a James Cook University PhD scholarship. A.B. and A.O. were supported by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Export Date: 20 April 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Export Date: 13 May 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Chemicals/CAS: hemozoin, 39404-00-7; Hemeproteins; hemozoin Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: National Health and Medical Research Council, NHMRC, GNT1127356 Funding details: James Cook University, JCU Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding text 1: The authors would like to sincerely thank all study participants. We thank Yagaum Hospital and Madang Town Clinic staff for their collaboration in this research study. We would like to thank Professor William Pomat, Dr. Livingstone Tavul, the PNGIMR microscopy unit, and molecular parasitology and entomology laboratory staff for their support. We would like to thank Ivo Mueller and Louis Schofield for helpful discussions. S.Ka. (GNT1141441) and L.J.R. (GNT1161627) are recipients of an Australian National Health and Medical Research Council (NHMRC) Career Development Fellowship. This study was funded by NHMRC Project Grant (GNT1127356). L.T. is supported by a James Cook University PhD scholarship. A.B. and A.O. were supported by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Export Date: 14 May 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Chemicals/CAS: hemozoin, 39404-00-7; Hemeproteins; hemozoin Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: National Health and Medical Research Council, NHMRC, GNT1127356 Funding details: James Cook University, JCU Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding text 1: The authors would like to sincerely thank all study participants. We thank Yagaum Hospital and Madang Town Clinic staff for their collaboration in this research study. We would like to thank Professor William Pomat, Dr. Livingstone Tavul, the PNGIMR microscopy unit, and molecular parasitology and entomology laboratory staff for their support. We would like to thank Ivo Mueller and Louis Schofield for helpful discussions. S.Ka. (GNT1141441) and L.J.R. (GNT1161627) are recipients of an Australian National Health and Medical Research Council (NHMRC) Career Development Fellowship. This study was funded by NHMRC Project Grant (GNT1127356). L.T. is supported by a James Cook University PhD scholarship. A.B. and A.O. were supported by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). Funding Agency and Grant Number: Australian National Health and Medical Research Council (NHMRC)National Health and Medical Research Council of Australia [GNT1141441, GNT1161627]; NHMRCNational Health and Medical Research Council of Australia [GNT1127356]; James Cook University; BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT) Funding text: The authors would like to sincerely thank all study participants. We thank Yagaum Hospital and Madang Town Clinic staff for their collaboration in this research study. We would like to thank Professor William Pomat, Dr. Livingstone Tavul, the PNGIMR microscopy unit, and molecular parasitology and entomology laboratory staff for their support. We would like to thank Ivo Mueller and Louis Schofield for helpful discussions. S.Ka. (GNT1141441) and L.J.R. (GNT1161627) are recipients of an Australian National Health and Medical Research Council (NHMRC) Career Development Fellowship. This study was funded by NHMRC Project Grant (GNT1127356). L.T. is supported by a James Cook University PhD scholarship. A.B. and A.O. were supported by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Export Date: 27 May 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Cited By :4 Export Date: 8 September 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Institute of Natural Materials Technology, University of Technology, Dresden, Germany Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang, Madang Province, Papua New Guinea Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany National Public Health Center, Budapest, Hungary School of Pharmacy, Curtin University, Bentley, WA, Australia Burnet Institute, Melbourne, VIC, Australia Export Date: 18 September 2021 Correspondence Address: Karl, S.; Vector-borne Diseases Unit, Papua New Guinea; email: stephan.karl@jcu.edu.au Correspondence Address: Kézsmárki, I.; Department of Physics, Hungary; email: istvan.kezsmarki@physik.uni-augsburg.de Chemicals/CAS: hemozoin, 39404-00-7; Hemeproteins; hemozoin Tradenames: CFX96 Touch, Biorad, Australia Manufacturers: Biorad, Australia Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: National Health and Medical Research Council, NHMRC, GNT1127356 Funding details: James Cook University, JCU Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding text 1: The authors would like to sincerely thank all study participants. We thank Yagaum Hospital and Madang Town Clinic staff for their collaboration in this research study. We would like to thank Professor William Pomat, Dr. Livingstone Tavul, the PNGIMR microscopy unit, and molecular parasitology and entomology laboratory staff for their support. We would like to thank Ivo Mueller and Louis Schofield for helpful discussions. S.Ka. (GNT1141441) and L.J.R. (GNT1161627) are recipients of an Australian National Health and Medical Research Council (NHMRC) Career Development Fellowship. This study was funded by NHMRC Project Grant (GNT1127356). L.T. is supported by a James Cook University PhD scholarship. A.B. and A.O. were supported by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). AB - Improved methods for malaria diagnosis are urgently needed. Here, we evaluate a novel method named rotating-crystal magneto-optical detection (RMOD) in 956 suspected malaria patients in Papua New Guinea. RMOD tests can be conducted within minutes and at low cost. We systematically evaluate the capability of RMOD to detect infections by directly comparing it with expert light microscopy, rapid diagnostic tests and polymerase chain reaction on capillary blood samples. We show that compared to light microscopy, RMOD exhibits 82% sensitivity and 84% specificity to detect any malaria infection and 87% sensitivity and 88% specificity to detect Plasmodium vivax. This indicates that RMOD could be useful in P. vivax dominated elimination settings. Parasite density correlates well with the quantitative magneto-optical signal. Importantly, residual hemozoin present in malaria-negative patients is also detectable by RMOD, indicating its ability to detect previous infections. This could be exploited to reveal transmission hotspots in low-transmission settings. © 2021, The Author(s). LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Dániel Gergely AU - Szaller, Dávid AU - Kézsmárki, István AU - Nagel, U. AU - Rõõm, T. AU - Peedu, L. AU - Viirok, J. AU - White, J.S. AU - Cubitt, R. AU - Ito, T. AU - Fishman, R.S. AU - Bordács, Sándor TI - Selection rules and dynamic magnetoelectric effect of the spin waves in multiferroic BiFe O3 JF - PHYSICAL REVIEW B J2 - PHYS REV B VL - 104 PY - 2021 IS - 17 SN - 2469-9950 DO - 10.1103/PhysRevB.104.174429 UR - https://m2.mtmt.hu/api/publication/32526224 ID - 32526224 N1 - Department of Physics, Budapest University of Technology and Economics, Budapest, 1111, Hungary MTA-BME Condensed Matter Research Group, Budapest, 1111, Hungary Institute of Solid State Physics, TU Wien, Vienna, 1040, Austria Experimental Physics v, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, Augsburg, 86159, Germany National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn, 12618, Estonia Laboratory for Neutron Scattering and Imaging (LNS), Paul Scherrer Institut (PSI), Villigen, CH-5232, Switzerland Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, Grenoble Cedex 9, 38042, France National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8562, Japan Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States Hungarian Academy of Sciences, Premium Postdoctor Program, Budapest, 1051, Hungary Export Date: 7 December 2021 Funding details: NMK2018-47 Funding details: U.S. Department of Energy, USDOE Funding details: Basic Energy Sciences, BES Funding details: Division of Materials Sciences and Engineering, DMSE Funding details: Austrian Science Fund, FWF, 2816-N27, TAI 334-N Funding details: Haridus- ja Teadusministeerium, HM, IUT23-3, PRG736 Funding details: Österreichische Agentur für Internationale Mobilität und Kooperation in Bildung, Wissenschaft und Forschung, WTZ HU 08/2020 Funding details: European Regional Development Fund, ERDF, TK134 Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH, ANN 122879, FK 135003 Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA Funding details: Innovációs és Technológiai Minisztérium Funding text 1: This research was supported by the Estonian Ministry of Education and Research Grants No. IUT23-3 and No. PRG736, by the European Regional Development Fund Project No. TK134, by the bilateral program of the Estonian and Hungarian Academies of Sciences under Contract No. NMK2018-47, by the Hungarian National Research, Development and Innovation Office—NKFIH Grants No. ANN 122879 and No. FK 135003. The research reported in this paper and carried out at the BME has been supported by the NRDI Fund (TKP2020 IES, Grant No. BME-IE-NAT) based on the charter of bolster issued by the NRDI Office under the auspices of the Ministry for Innovation and Technology. D.Sz. acknowledges the support of the Austrian Science Fund (FWF) [No. I 2816-N27 and No. TAI 334-N] and that of the Austrian Agency for International Cooperation in Education and Research [No. WTZ HU 08/2020]. R.S.F. acknowledges support by the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division. AB - We report the magnetic-field dependence of the THz absorption and nonreciprocal directional dichroism spectra of BiFeO3 measured on the three principal crystal cuts for fields applied along the three principal directions of each cut. From the systematic study of the light polarization dependence, we deduced the optical selection rules of the spin-wave excitations. Our THz data, combined with small-angle neutron scattering results showed that (i) an in-plane magnetic field rotates the q vectors of the cycloids perpendicular to the magnetic field and (ii) the selection rules are mostly determined by the orientation of the q vector with respect to the electromagnetic fields. We observed a magnetic field history-dependent change in the strength and the frequency of the spin-wave modes, which we attributed to the change of the orientation and the length of the cycloidal q vector, respectively. Finally, we compared our experimental data with the results of linear spin-wave theory that reproduces the magnetic-field dependence of the spin-wave frequencies and most of the selection rules, from which we identified the spin-polarization coupling terms relevant for the optical magnetoelectric effect. © 2021 American Physical Society. LA - English DB - MTMT ER - TY - JOUR AU - Orban, Agnes AU - Longley, Rhea J. AU - Sripoorote, Piyarat AU - Maneechai, Nongnuj AU - Nguitragool, Wang AU - Butykai, Ádám AU - Mueller, Ivo AU - Sattabongkot, Jetsumon AU - Karl, Stephan AU - Kézsmárki, István TI - Sensitive detection of Plasmodium vivax malaria by the rotating-crystal magneto-optical method in Thailand JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 11 PY - 2021 IS - 1 PG - 8 SN - 2045-2322 DO - 10.1038/s41598-021-97532-9 UR - https://m2.mtmt.hu/api/publication/32277585 ID - 32277585 N1 - Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary Population Health and Immunity Division, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia Mahidol Vivax Research Unit, Mahidol University, Bangkok, Thailand Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia Department of Molecular Tropical Medicine and Genetics, Mahidol University, Bangkok, Thailand Unité Malaria: Parasites et Hôtes, Département Parasites et Insectes Vecteurs, Institut Pasteur, Paris, France Vector-borne Diseases Unit, PNG Institute of Medical Research, Madang Province 511, Madang, Papua New Guinea Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, QLD, Australia Experimental Physics 5, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany Cited By :1 Export Date: 8 June 2022 Correspondence Address: Orbán, Á.; Department of Physics, Hungary; email: orbanag@gmail.com Funding details: National Health and Medical Research Council, NHMRC, GNT1141441, GNT1173210 Funding details: Emberi Eroforrások Minisztériuma, EMMI, BME FIKP-NAT Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA, TKP2020 IES Grant 306 BME-IE-NAT Funding text 1: The authors would like to sincerely thank all study participants. We thank all involved health facility staff for their collaboration in these research studies. R.J.L is the recipient of an Australian National Health and Medical Research Council (NHMRC) Emerging Leadership Fellowship (GNT1173210). S.K. is a recipients of an NHMRC Career Development Fellowship (GNT1141441). A.B. and A.O. were supported by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT) and NRDI Fund (TKP2020 IES, Grant No. BME-IE-NAT), Hungary. AB - The rotating-crystal magneto-optical detection (RMOD) method has been developed for the rapid and quantitative diagnosis of malaria and tested systematically on various malaria infection models. Very recently, an extended field trial in a high-transmission region of Papua New Guinea demonstrated its great potential for detecting malaria infections, in particular Plasmodium vivax. In the present small-scale field test, carried out in a low-transmission area of Thailand, RMOD confirmed malaria in all samples found to be infected with Plasmodium vivax by microscopy, our reference method. Moreover, the magneto-optical signal for this sample set was typically 1-3 orders of magnitude higher than the cut-off value of RMOD determined on uninfected samples. Based on the serial dilution of the original patient samples, we expect that the method can detect Plasmodium vivax malaria in blood samples with parasite densities as low as similar to 5-10 parasites per microliter, a limit around the pyrogenic threshold of the infection. In addition, by investigating the correlation between the magnitude of the magneto-optical signal, the parasite density and the erythrocytic stage distribution, we estimate the relative hemozoin production rates of the ring and the trophozoite stages of in vivo Plasmodium vivax infections. LA - English DB - MTMT ER -