FS-ATTO

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2018-01-23
10:34
[PUBDB-2018-00754] Journal Article
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Transferring the entatic-state principle to copper photochemistry
Nature chemistry 10, 355 – 362 (2018) [10.1038/nchem.2916]  GO
ddc:540
The entatic state denotes a distorted coordination geometry of a complex from its typical arrangement that generates an improvement to its function. The entatic-state principle has been observed to apply to copper electron-transfer proteins and it results in a lowering of the reorganization energy of the electron-transfer process. [...]
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2018-01-16
10:01
OpenAccess [PUBDB-2018-00659] Journal Article
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Drastic difference between hole and electron injection through the gradient shell of $\mathrm{Cd_{x}Se_{y}Zn_{1−x}S_{1−y}}$ quantum dots
Nanoscale 9(34), 12503 - 12508 12508 (2017) [10.1039/C7NR04495J]  GO
ddc:600
Ultrafast fluorescence spectroscopy was used to investigate the hole injection in Cd$_{x}$Se$_{y}$Zn$_{1−x}$S$_{1−y}$ gradient core–shell quantum dot (CSQD) sensitized p-type NiO photocathodes. A series of CSQDs with a wide range of shell thicknesses was studied. [...]
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2018-01-11
17:11
[PUBDB-2018-00570] Journal Article
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Probing the Impact of Solvation on Photoexcited Spin Crossover Complexes with High-Precision X-ray Transient Absorption Spectroscopy
ddc:540
Investigating the photoinduced electronic and structural response of bistable molecular building blocks incorporating transition metals in solution phase constitutes a necessary stepping stone for steering their properties toward applications and performance optimizations. This work presents a detailed X-ray transient absorption (XTA) spectroscopy study of a prototypical spin crossover (SCO) complex [FeII(mbpy)$_3$]$^{2+}$ (where mbpy = 4,4′-dimethyl-2,2′-bipyridine) with an [Fe$^{II}$N$_6$] first coordination shell in water (H2$_O$) and acetonitrile (CH$_3$CN). [...]
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2018-01-11
15:44
[PUBDB-2018-00539] Journal Article
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Enhanced Size Selection in Two-Photon Excitation for $\mathrm{CsPbBr_{3}}$ Perovskite Nanocrystals
ddc:530
Cesium lead bromide (CsPbBr$_3$) perovskite nanocrystals (NCs), with large two-photon absorption (TPA) cross-section and bright photoluminescence (PL), have been demonstrated as stable two-photon-pumped lasing medium. With two-photon excitation, red-shifted PL spectrum and increased PL lifetime is observed compared with one-photon excitation. [...]
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2018-01-11
15:39
[PUBDB-2018-00535] Journal Article

Photoemission delay: The White Rabbit's clock
Nature physics 13(3), 207 – 208 (2016) [10.1038/nphys3973]  GO
ddc:530
Without a very precise timer one can never catch up with the electron released in photoemission. Attosecond streaking spectroscopy allows such a chronometer clock to be set to zero and reveals the role of electron correlations..
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2018-01-11
13:38
[PUBDB-2018-00490] Journal Article
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Ultrafast dynamics in the DNA building blocks thymidine and thymine initiated by ionizing radiation
ddc:540
Understanding how energetic charged particles damage DNA is crucial for improving radiotherapy techniques such as hadron therapy and for the development of new radiosensitizer drugs. In the present study, the damage caused by energetic particles was simulated by measuring the action of extreme ultraviolet (XUV) attosecond pulses on the DNA building blocks thymine and thymidine [...]

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2017-12-30
19:11
OpenAccess [PUBDB-2017-14151] Journal Article
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Attosecond streaking metrology with isolated nanotargets
ddc:530
The development of attosecond metrology has enabled time-resolved studies on atoms, molecules, and (nanostructured) solids. Despite a wealth of theoretical work, attosecond experiments on isolated nanotargets, such as nanoparticles, clusters, and droplets have been lacking. [...]
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2017-12-30
19:06
DBCoverage [PUBDB-2017-14150] Journal Article
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Coherent diffractive imaging of single helium nanodroplets with a high harmonic generation source
ddc:500
Coherent diffractive imaging of individual free nanoparticles has opened routes for the in situ analysis of their transient structural, optical, and electronic properties. So far, single-shot single-particle diffraction was assumed to be feasible only at extreme ultraviolet and X-ray free-electron lasers, restricting this research field to large-scale facilities. [...]
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2017-09-14
16:06
OpenAccess [PUBDB-2017-10786] Journal Article
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Application of Matched-Filter Concepts to Unbiased Selection of Data in Pump-Probe Experiments with Free Electron Lasers
ddc:600
Pump-probe experiments are commonly used at Free Electron Lasers (FEL) to elucidate the femtosecond dynamics of atoms, molecules, clusters, liquids and solids. Maximizing the signal-to-noise ratio of the measurements is often a primary need of the experiment, and the aggregation of repeated, rapid, scans of the pump-probe delay is preferable to a single long-lasting scan. [...]
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2017-09-14
16:03
[PUBDB-2017-10785] Journal Article
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Vectorial optical field reconstruction by attosecond spatial interferometry
ddc:530
An electrical pulse E(t) is defined completely by its time-dependent amplitude and polarization direction. For opticalpulses the manipulation and characterization of the light polarization state is fundamental because of its relevance inseveral scientific and technologicalfields. [...]
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