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Waveguide structures with antisymmetric gain/loss profile.

Optics express

Ctyroký J, Kuzmiak V, Eyderman S.
PMID: 20941056
Opt Express. 2010 Oct 11;18(21):21585-93. doi: 10.1364/OE.18.021585.

Waveguide structures with an antisymmetric gain/loss profile were studied more than a decade ago as benchmark tests for beam propagation methods. These structures attracted renewed interest, recently e.g. as photonic analogues of quantum mechanical structures with parity-time symmetry breaking....

Artificial ferroic systems: novel functionality from structure, interactions and dynamics.

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

Heyderman LJ, Stamps RL.
PMID: 23948652
J Phys Condens Matter. 2013 Sep 11;25(36):363201. doi: 10.1088/0953-8984/25/36/363201. Epub 2013 Aug 16.

Lithographic processing and film growth technologies are continuing to advance, so that it is now possible to create patterned ferroic materials consisting of arrays of sub-1 μm elements with high definition. Some of the most fascinating behaviour of these...

Nonadiabatic spin torque investigated using thermally activated magnetic domain wall dynamics.

Physical review letters

Eltschka M, Wötzel M, Rhensius J, Krzyk S, Nowak U, Kläui M, Kasama T, Dunin-Borkowski RE, Heyderman LJ, van Driel HJ, Duine RA.
PMID: 20867942
Phys Rev Lett. 2010 Jul 30;105(5):056601. doi: 10.1103/PhysRevLett.105.056601. Epub 2010 Jul 29.

Using transmission electron microscopy, we investigate the thermally activated motion of domain walls (DWs) between two positions in Permalloy (Ni80Fe20) nanowires at room temperature. We show that this purely thermal motion is well described by an Arrhenius law, allowing...

Direct determination of large spin-torque nonadiabaticity in vortex core dynamics.

Physical review letters

Heyne L, Rhensius J, Ilgaz D, Bisig A, Rüdiger U, Kläui M, Joly L, Nolting F, Heyderman LJ, Thiele JU, Kronast F.
PMID: 21231132
Phys Rev Lett. 2010 Oct 29;105(18):187203. doi: 10.1103/PhysRevLett.105.187203. Epub 2010 Oct 25.

We use a pump-probe photoemission electron microscopy technique to image the displacement of vortex cores in Permalloy discs due to the spin-torque effect during current pulse injection. Exploiting the distinctly different symmetries of the spin torques and the Oersted-field...

Domain-wall induced large magnetoresistance effects at zero applied field in ballistic nanocontacts.

Physical review letters

von Bieren A, Patra AK, Krzyk S, Rhensius J, Reeve RM, Heyderman LJ, Hoffmann-Vogel R, Kläui M.
PMID: 23432298
Phys Rev Lett. 2013 Feb 08;110(6):067203. doi: 10.1103/PhysRevLett.110.067203. Epub 2013 Feb 07.

We determine magnetoresistance effects in stable and clean Permalloy nanocontacts of variable cross section, fabricated by UHV deposition and in situ electromigration. To ascertain the magnetoresistance (MR) effects originating from a magnetic domain wall, we measure the resistance values...

Supramolecular Catalysis of Ester and Amide Cleavage by a Dinuclear Barium(II) Complex.

Angewandte Chemie (International ed. in English)

Cacciapaglia R, Di Stefano S, Kelderman E, Mandolini L.
PMID: 29711642
Angew Chem Int Ed Engl. 1999 Feb 01;38(3):348-351. doi: 10.1002/(SICI)1521-3773(19990201)38:3<348::AID-ANIE348>3.0.CO;2-D.

Five components spontaneously self-assemble to yield the productive complex 1, where one barium ion delivers an ethoxide to the carbonyl group of an amide substrate anchored by means of a distal carboxylate moiety to the other barium ion. High...

Generation of coherent extreme ultraviolet radiation from α-quartz using 50  fs laser pulses at a 1030  nm wavelength and high repetition rates.

Optics letters

Luu TT, Scagnoli V, Saha S, Heyderman LJ, Wörner HJ.
PMID: 29652365
Opt Lett. 2018 Apr 15;43(8):1790-1793. doi: 10.1364/OL.43.001790.

Coherent extreme ultraviolet (EUV) radiation using high-harmonic generation (HHG) in α-quartz is demonstrated from 10 to 200 kHz, using 50 fs laser pulses at the center wavelength of 1030 nm. The EUV radiation extends beyond 25 eV in the...

HIV-associated disruption of lung cytokine networks is incompletely restored in asymptomatic HIV-infected Malawian adults on antiretroviral therapy.

ERJ open research

Jambo KC, Tembo DL, Kamng'ona AW, Musicha P, Banda DH, Kankwatira AM, Malamba RD, Allain TJ, Heyderman RS, Russell DG, Mwandumba HC.
PMID: 29255717
ERJ Open Res. 2017 Dec 14;3(4). doi: 10.1183/23120541.00097-2017. eCollection 2017 Oct.

Disruption of lung cytokine networks during chronic HIV infection is incompletely restored in individuals on antiretroviral therapy.

Spin-Wave Emission from Vortex Cores under Static Magnetic Bias Fields.

Nano letters

Mayr S, Flajšman L, Finizio S, Hrabec A, Weigand M, Förster J, Stoll H, Heyderman LJ, Urbánek M, Wintz S, Raabe J.
PMID: 33544597
Nano Lett. 2021 Feb 24;21(4):1584-1590. doi: 10.1021/acs.nanolett.0c03740. Epub 2021 Feb 05.

We studied the influence of a static in-plane magnetic field on the alternating-field-driven emission of nanoscale spin waves from magnetic vortex cores. Time-resolved scanning transmission X-ray microscopy was used to image spin waves in disk structures of synthetic ferrimagnets...

Erratum: Aluwé, M. et al. Exploratory Survey on European Consumer and Stakeholder Attitudes towards Alternatives for Surgical Castration of Piglets. .

Animals : an open access journal from MDPI

Aluwé M, Heyrman E, Almeida JM, Babol J, Battacone G, Čítek J, Font I Furnols M, Getya A, Karolyi D, Kostyra E, Kress K, Kušec G, Mörlein D, Semenova A, Škrlep M, Stoyanchev T, Tomašević I, Tudoreanu L, Van Son M, Żakowska-Biemans S, Zamaratskaia G, Van den Broeke A, Egea M.
PMID: 33327668
Animals (Basel). 2020 Dec 14;10(12). doi: 10.3390/ani10122388.

The authors wish to make the following corrections to this paper [...].

Fungal Burden and Raised Intracranial Pressure Are Independently Associated With Visual Loss in Human Immunodeficiency Virus-Associated Cryptococcal Meningitis.

Open forum infectious diseases

Molloy SF, Ross B, Kanyama C, Mfinanga S, Lesikari S, Heyderman RS, Kalata N, Ellis J, Kouanfack C, Chanda D, Temfack E, Lakhi S, Moodley A, Chan AK, van Oosterhout JJ, Mapoure Y, Mwaba P, Lalloo DG, Wang D, Lortholary O, Jaffar S, Hosseinipour MC, Loyse A, Harrison TS, Bicanic T.
PMID: 33937434
Open Forum Infect Dis. 2021 Feb 05;8(4):ofab066. doi: 10.1093/ofid/ofab066. eCollection 2021 Apr.

Among 472 patients with human immunodeficiency virus-associated cryptococcal meningitis, 16% had severe visual loss at presentation, and 46% of these were 4-week survivors and remained severely impaired. Baseline cerebrospinal fluid opening pressure ≥40 cmH

Short-term Mortality Outcomes of HIV-Associated Cryptococcal Meningitis in Antiretroviral Therapy-Naïve and -Experienced Patients in Sub-Saharan Africa.

Open forum infectious diseases

Kalata N, Ellis J, Kanyama C, Kuoanfank C, Temfack E, Mfinanga S, Lesikari S, Chanda D, Lakhi S, Nyazika T, Chan AK, van Oosterhout JJ, Chen T, Hosseinipour MC, Lortholary O, Wang D, Jaffar S, Loyse A, Heyderman RS, Harrison TS, Molloy SF.
PMID: 34646905
Open Forum Infect Dis. 2021 Jul 28;8(10):ofab397. doi: 10.1093/ofid/ofab397. eCollection 2021 Oct.

BACKGROUND: An increasing proportion of patients with HIV-associated cryptococcal meningitis have received antiretroviral therapy (ART) before presentation. There is some evidence suggesting an increased 2-week mortality in those receiving ART for 14 days. However, presentation and outcomes for cryptococcal...

Showing 1 to 12 of 120 entries