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Influence of Homogenization and Solution Treatments Time on the Microstructure and Hardness of Inconel 718 Fabricated by Laser Powder Bed Fusion Process.

Author(s): Fayed EM, Shahriari D, Saadati M, Brailovski V, Jahazi M, Medraj M

Materials (Basel). 2020 Jun 05;13(11): Authors: Fayed EM, Shahriari D, Saadati M, Brailovski V, Jahazi M, Medraj M

Article GUID: 32516909
Multidisciplinary Design Optimization of a Novel Sandwich Beam-Based Adaptive Tuned Vibration Absorber Featuring Magnetorheological Elastomer.

Author(s): Asadi Khanouki M, Sedaghati R, Hemmatian M

Materials (Basel). 2020 May 14;13(10): Authors: Asadi Khanouki M, Sedaghati R, Hemmatian M

Article GUID: 32422988
Water Droplet Erosion of Wind Turbine Blades: Mechanics, Testing, Modeling and Future Perspectives.

Author(s): Elhadi Ibrahim M, Medraj M

Materials (Basel). 2019 Dec 31;13(1): Authors: Elhadi Ibrahim M, Medraj M

Article GUID: 31906204
Fabrication of Porous Gold Film Using Graphene Oxide as a Sacrificial Layer.

Author(s): Alazzam A, Alamoodi N, Abutayeh M, Stiharu I, Nerguizian V

Materials (Basel). 2019 Jul 18;12(14): Authors: Alazzam A, Alamoodi N, Abutayeh M, Stiharu I, Nerguizian V

Article GUID: 31323903
Fatigue Crack Growth Behavior of the MIG Welded Joint of 06Cr19Ni10 Stainless Steel.

Author(s): Tang L, Qian C, Ince A, Zheng J, Li H, Han Z

Materials (Basel). 2018 Aug 02;11(8): Authors: Tang L, Qian C, Ince A, Zheng J, Li H, Han Z

Article GUID: 30072599
Morphology of Aluminum Alloy Foams Produced with Dolomite via Partial Sintering of Precursors.

Author(s): Medina Ramirez AM, Vintila RR, Drew RAL

Materials (Basel). 2019 May 24;12(10): Authors: Medina Ramirez AM, Vintila RR, Drew RAL

Article GUID: 31137682
Counting the Photons: Determining the Absolute Storage Capacity of Persistent Phosphors.

Author(s): Van der Heggen D, Joos JJ, Rodríguez Burbano DC, Capobianco JA, Smet PF

Materials (Basel). 2017 Jul 28;10(8): Authors: Van der Heggen D, Joos JJ, Rodríguez Burbano DC, Capobianco JA, Smet PF

Article GUID: 28773228
Title:Counting the Photons: Determining the Absolute Storage Capacity of Persistent Phosphors.
Authors:Van der Heggen D,  Joos JJ,  Rodríguez Burbano DC,  Capobianco JA,  Smet PF
Link:https://www.ncbi.nlm.nih.gov/pubmed/28773228?dopt=Abstract
Category:Materials (Basel)
PMID:28773228
Dept Affiliation: CHEMBIOCHEM
1 Lumilab, Department of Solid State Sciences, Ghent University, Krijgslaan 281 S1, 9000 Gent, Belgium. david.vanderheggen@ugent.be.
2 Lumilab, Department of Solid State Sciences, Ghent University, Krijgslaan 281 S1, 9000 Gent, Belgium. jonas.joos@ugent.be.
3 Department of Chemistry and Biochemistry and Center for Nanoscience Research, Concordia University, Montreal, QC H4B 1R6, Canada. di_rodr@live.concordia.ca.
4 Department of Chemistry and Biochemistry and Center for Nanoscience Research, Concordia University, Montreal, QC H4B 1R6, Canada. John.Capobianco@concordia.ca.
5 Lumilab, Department of Solid State Sciences, Ghent University, Krijgslaan 281 S1, 9000 Gent, Belgium. philippe.smet@ugent.be.

Description:

Counting the Photons: Determining the Absolute Storage Capacity of Persistent Phosphors.

Materials (Basel). 2017 Jul 28;10(8):

Authors: Van der Heggen D, Joos JJ, Rodríguez Burbano DC, Capobianco JA, Smet PF

Abstract

The performance of a persistent phosphor is often determined by comparing luminance decay curves, expressed in cd/m 2 . However, these photometric units do not enable a straightforward, objective comparison between different phosphors in terms of the total number of emitted photons, as these units are dependent on the emission spectrum of the phosphor. This may lead to incorrect conclusions regarding the storage capacity of the phosphor. An alternative and convenient technique of characterizing the performance of a phosphor was developed on the basis of the absolute storage capacity of phosphors. In this technique, the phosphor is incorporated in a transparent polymer and the measured afterglow is converted into an absolute number of emitted photons, effectively quantifying the amount of energy that can be stored in the material. This method was applied to the benchmark phosphor SrAl 2 O 4 :Eu,Dy and to the nano-sized phosphor CaS:Eu. The results indicated that only a fraction of the Eu ions (around 1.6% in the case of SrAl 2 O 4 :Eu,Dy) participated in the energy storage process, which is in line with earlier reports based on X-ray absorption spectroscopy. These findings imply that there is still a significant margin for improving the storage capacity of persistent phosphors.

PMID: 28773228 [PubMed]