Results 61 to 70 of about 265,473 (286)

Silver ion bioreduction in nanoparticles using Artemisia annua L. extract: characterization and application as antibacterial agents

open access: yesAMB Express, 2020
The biological synthesis of metal nanoparticles using plant extracts with defined size and morphology is a simple, nontoxic and environmentally friendly method.
Anush Aghajanyan   +3 more
doaj   +1 more source

VUV and X-ray coherent light with tunable polarization from single-pass free-electron lasers

open access: yes, 2011
Tunable polarization over a wide spectral range is a required feature of light sources employed to investigate the properties of local symmetry in both condensed and low-density matter.
A. Kondratenko   +14 more
core   +1 more source

Ultrafast Dynamics of a Nucleobase Analogue Illuminated by a Short Intense X-ray Free Electron Laser Pulse [PDF]

open access: yes, 2016
Citation: Nagaya, K., Motomura, K., Kukk, E., Fukuzawa, H., Wada, S., Tachibana, T., . . . Ueda, K. (2016). Ultrafast Dynamics of a Nucleobase Analogue Illuminated by a Short Intense X-ray Free Electron Laser Pulse. Physical Review X, 6(2), 9.
Anand, M.   +27 more
core   +4 more sources

Acoustic Injectors Meet X-Ray Free-Electron Lasers [PDF]

open access: yesStructure, 2016
In this issue of Structure, Roessler et al. (2016) present a new method to acoustically inject samples for serial femtosecond crystallography into the focus of free-electron lasers. This method can drastically reduce the sample consumption of this method. It will therefore play an important role in the mix of sample preparation technologies.
openaire   +3 more sources

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

A biominősítés hatása a fogyasztók érzékelésére és attitűdjére csokoládék esetén [PDF]

open access: yes, 2018
The time–energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons.
A Lutman   +80 more
core   +2 more sources

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Visualizing aerosol-particle injection for diffractive-imaging experiments

open access: yes, 2015
Delivering sub-micrometer particles to an intense x-ray focus is a crucial aspect of single-particle diffractive-imaging experiments at x-ray free-electron lasers.
Awel, Salah   +7 more
core   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Ultrafast heat transfer in single palladium nanocrystals seen with an X-ray free-electron laser

open access: yesCommunications Materials
We report transient highly strained structural states in individual palladium (Pd) nanocrystals, electronically heated using an optical laser, which precede their uniform thermal expansion.
David Yang   +13 more
doaj   +1 more source

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