Results 11 to 20 of about 725,685 (298)

Controlled reduction of photobleaching in DNA origami gold nanoparticle hybrids [PDF]

open access: yes, 2014
The amount of information obtainable from a fluorescence-based measurement is limited by photobleaching: Irreversible photochemical reactions either render the molecules nonfluorescent or shift their absorption and/or emission spectra outside the working
Acuna G. P.   +40 more
core   +2 more sources

Biomimetic light-harvesting funnels for re-directioning of diffuse light

open access: yesNature Communications, 2018
Sunlight harvesting and redirection is a promising concept for sustainable energy conversion, however losses have hindered progress. Here the authors construct a simple biomimetic device which minimises losses by using reservoirs of randomly-oriented ...
Alexander Pieper   +7 more
doaj   +1 more source

A Perspective on Recent Advances in Phosphorene Functionalization and its Application in Devices [PDF]

open access: yes, 2019
Phosphorene, the 2D material derived from black phosphorus, has recently attracted a lot of interest for its properties, suitable for applications in material science.
Benito, Inigo Iglesias   +17 more
core   +2 more sources

Spin Labeling of RNA Using “Click” Chemistry for Coarse-grained Structure Determination via Pulsed Electron-electron Double Resonance Spectroscopy

open access: yesBio-Protocol, 2021
Understanding the function of oligonucleotides on a molecular level requires methods for studying their structure, conformational changes, and internal dynamics.
Maria Vicino   +2 more
doaj   +1 more source

λ/2 Fabry Pérot micro-resonators in single molecule spectroscopy

open access: yesEPJ Web of Conferences, 2018
Embedded in a tuneable λ/2-FabryPérot micro-resonator the radiative relaxation of a dye molecule or quantum dot can reproducibly be modified allowing to determine their quantum yield, control Förster energy-transfer or localize them with nanometer ...
Meixner Alfred J.   +4 more
doaj   +1 more source

Synthesis of Nanometer Sized Bis- and Tris-trityl Model Compounds with Different Extent of Spin–Spin Coupling

open access: yesMolecules, 2018
Tris(2,3,5,6-tetrathiaaryl)methyl radicals, so-called trityl radicals, are emerging as spin labels for distance measurements in biological systems based on Electron Paramagnetic Resonance (EPR).
J. Jacques Jassoy   +4 more
doaj   +1 more source

Understanding the Sensing Mechanism of Rh2O3 loaded In2O3

open access: yesProceedings, 2018
The effect of Rh loading on CO sensing was studied for the case of In2O3. This was done by performing measurements with sensors based on loaded and unloaded materials that were performed at an operation temperature of 300 °C in the presence of low ...
Inci Boehme   +5 more
doaj   +1 more source

Strong inverse kinetic isotope effect observed in ammonia charge exchange reactions

open access: yesNature Communications, 2020
Inverse kinetic isotope effects (KIEs) are rarely observed. Here, the authors report an inverse KIE in the charge transfer reaction of $${{\rm{Xe}}}^{+}$$ Xe+ with ammonia.
L. S. Petralia   +4 more
doaj   +1 more source

The Large Magellanic Cloud as a laboratory for Hot Bottom Burning in massive Asymptotic Giant Branch stars [PDF]

open access: yes, 2015
We use Spitzer observations of the rich population of Asymptotic Giant Branch stars in the Large Magellanic Cloud (LMC) to test models describing the internal structure and nucleosynthesis of the most massive of these stars, i.e.
Boyer, M. L.   +6 more
core   +2 more sources

Missing Elements and Missing Premises: A Combinatorial Argument for the Ontological Reduction of Chemistry [PDF]

open access: yes, 2005
Does chemistry reduce to physics? If this means Can we derive the laws of chemistry from the laws of physics?', recent discussions suggest that the answer is no'.
Le Poidevin, R.
core   +1 more source

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