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Showing 1 to 12 of 199 entries
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Partially Reversible Photoinduced Chemical Changes in a Mixed-Ion Perovskite Material for Solar Cells.

ACS applied materials & interfaces

Cappel UB, Svanström S, Lanzilotto V, Johansson FOL, Aitola K, Philippe B, Giangrisostomi E, Ovsyannikov R, Leitner T, Föhlisch A, Svensson S, Mårtensson N, Boschloo G, Lindblad A, Rensmo H.
PMID: 28925263
ACS Appl Mater Interfaces. 2017 Oct 11;9(40):34970-34978. doi: 10.1021/acsami.7b10643. Epub 2017 Sep 29.

Metal halide perovskites have emerged as materials of high interest for solar energy-to-electricity conversion, and in particular, the use of mixed-ion structures has led to high power conversion efficiencies and improved stability. For this reason, it is important to...

Detection of non-classical space-time correlations with a novel type of single-photon camera.

Optics express

Just F, Filipenko M, Cavanna A, Michel T, Gleixner T, Taheri M, Vallerga J, Campbell M, Tick T, Anton G, Chekhova MV, Leuchs G.
PMID: 25090571
Opt Express. 2014 Jul 14;22(14):17561-72. doi: 10.1364/OE.22.017561.

During the last decades, multi-pixel detectors have been developed capable of registering single photons. The newly developed hybrid photon detector camera has a remarkable property that it has not only spatial but also temporal resolution. In this work, we...

Rhizosphere bacterial carbon turnover is higher in nucleic acids than membrane lipids: implications for understanding soil carbon cycling.

Frontiers in microbiology

Malik AA, Dannert H, Griffiths RI, Thomson BC, Gleixner G.
PMID: 25914679
Front Microbiol. 2015 Apr 09;6:268. doi: 10.3389/fmicb.2015.00268. eCollection 2015.

Using a pulse chase (13)CO2 plant labeling experiment we compared the flow of plant carbon into macromolecular fractions of rhizosphere soil microorganisms. Time dependent (13)C dilution patterns in microbial cellular fractions were used to calculate their turnover time. The...

Electronic structure dynamics in a low bandgap polymer studied by time-resolved photoelectron spectroscopy.

Physical chemistry chemical physics : PCCP

Cappel UB, Plogmaker S, Terschlüsen JA, Leitner T, Johansson EM, Edvinsson T, Sandell A, Karis O, Siegbahn H, Svensson S, Mårtensson N, Rensmo H, Söderström J.
PMID: 27440450
Phys Chem Chem Phys. 2016 Aug 03;18(31):21921-9. doi: 10.1039/c6cp04136a.

Means to measure the temporal evolution following a photo-excitation in conjugated polymers are a key for the understanding and optimization of their function in applications such as organic solar cells. In this paper we study the electronic structure dynamics...

25 Years of Contrast-Enhanced MRI: Developments, Current Challenges and Future Perspectives.

Advances in therapy

Lohrke J, Frenzel T, Endrikat J, Alves FC, Grist TM, Law M, Lee JM, Leiner T, Li KC, Nikolaou K, Prince MR, Schild HH, Weinreb JC, Yoshikawa K, Pietsch H.
PMID: 26809251
Adv Ther. 2016 Jan;33(1):1-28. doi: 10.1007/s12325-015-0275-4. Epub 2016 Jan 25.

UNLABELLED: In 1988, the first contrast agent specifically designed for magnetic resonance imaging (MRI), gadopentetate dimeglumine (Magnevist(®)), became available for clinical use. Since then, a plethora of studies have investigated the potential of MRI contrast agents for diagnostic imaging...

Assessment of LV ejection fraction using real-time 3D echocardiography in daily practice: direct comparison of the volumetric and speckle tracking methodologies to CMR.

Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation

Driessen MM, Kort E, Cramer MJ, Doevendans PA, Angevaare MJ, Leiner T, Meijboom FJ, Chamuleau SA, Sieswerda GT.
PMID: 25143268
Neth Heart J. 2014 Sep;22(9):383-90. doi: 10.1007/s12471-014-0577-1.

AIMS: This study is the first to directly compare two widely used real-time 3D echocardiography (RT3DE) methods of cardiac magnetic resonance imaging (CMR) and assess their reproducibility in experienced and less experienced observers.METHODS: Consecutive patients planned for CMR underwent...

Core level photoionization on free sub-10-nm nanoparticles using synchrotron radiation.

The Review of scientific instruments

Meinen J, Khasminskaya S, Eritt M, Leisner T, Antonsson E, Langer B, Rühl E.
PMID: 20815628
Rev Sci Instrum. 2010 Aug;81(8):085107. doi: 10.1063/1.3475154.

A novel instrument is presented, which permits studies on singly charged free nanoparticles in the diameter range from 1 to 30 nm using synchrotron radiation in the soft x-ray regime. It consists of a high pressure nanoparticle source, a...

On the role of surface charges for homogeneous freezing of supercooled water microdroplets.

Physical chemistry chemical physics : PCCP

Rzesanke D, Nadolny J, Duft D, Müller R, Kiselev A, Leisner T.
PMID: 22294097
Phys Chem Chem Phys. 2012 Jul 14;14(26):9359-63. doi: 10.1039/c2cp23653b. Epub 2012 Feb 01.

Charge induced changes in homogeneous freezing rates of water have been proposed to constitute a possible link between the global atmospheric electric circuit and cloud microphysics and thus climate. We report here on high precision measurements of the homogeneous...

Contact freezing efficiency of mineral dust aerosols studied in an electrodynamic balance: quantitative size and temperature dependence for illite particles.

Faraday discussions

Hoffmann N, Duft D, Kiselev A, Leisner T.
PMID: 24601013
Faraday Discuss. 2013;165:383-90. doi: 10.1039/c3fd00033h.

Contact freezing has long been discussed as a candidate for cloud ice formation at temperatures warmer than about -25 degrees C, but until now the molecular mechanism underlying this process has remained obscure and little quantitative information about the...

Morphological tuning of the plasmon dispersion relation in dielectric-loaded nanofiber waveguides.

Physical review letters

Leißner T, Lemke C, Fiutowski J, Radke JW, Klick A, Tavares L, Kjelstrup-Hansen J, Rubahn HG, Bauer M.
PMID: 23931393
Phys Rev Lett. 2013 Jul 26;111(4):046802. doi: 10.1103/PhysRevLett.111.046802. Epub 2013 Jul 24.

Understanding the impact of lateral mode confinement in plasmonic waveguides is of fundamental interest regarding potential applications in plasmonic devices. The knowledge of the frequency-wave vector dispersion relation provides the full information on electromagnetic field propagation in a waveguide....

Environmental Control on Microbial Turnover of Leaf Carbon in Streams - Ecological Function of Phototrophic-Heterotrophic Interactions.

Frontiers in microbiology

Fabian J, Zlatanović S, Mutz M, Grossart HP, van Geldern R, Ulrich A, Gleixner G, Premke K.
PMID: 29915564
Front Microbiol. 2018 Jun 04;9:1044. doi: 10.3389/fmicb.2018.01044. eCollection 2018.

In aquatic ecosystems, light availability can significantly influence microbial turnover of terrestrial organic matter through associated metabolic interactions between phototrophic and heterotrophic communities. However, particularly in streams, microbial functions vary significantly with the structure of the streambed, that is...

Comparing potential recharge estimates from three Land Surface Models across the Western US.

Journal of hydrology

Niraula R, Meixner T, Ajami H, Rodell M, Gochis D, Castro CL.
PMID: 29618845
J Hydrol (Amst). 2017 Feb;545:410-423. doi: 10.1016/j.jhydrol.2016.12.028. Epub 2016 Dec 21.

Groundwater is a major source of water in the western US. However, there are limited recharge estimates available in this region due to the complexity of recharge processes and the challenge of direct observations. Land surface Models (LSMs) could...

Showing 1 to 12 of 199 entries