Results 1 to 10 of about 1,787,488 (253)

Positron Annihilation Lifetime Spectroscopy Insight on Free Volume Conversion of Nanostructured MgAl₂O₄ Ceramics

Nanomaterials, 2021
Herein we demonstrate the specifics of using the positron annihilation lifetime spectroscopy (PALS) method for the study of free volume changes in functional ceramic materials.
Halyna Klym, Ivan Karbovnyk, Sergei Piskunov, Anatoli I. Popov   +3 more
doaj   +2 more sources

Probing the Free Volume in Polymers by Means of Positron Annihilation Lifetime Spectroscopy

Polymers, 2023
Positron annihilation lifetime spectroscopy (PALS) is a valuable technique to investigate defects in solids, such as vacancy clusters and grain boundaries in metals and alloys, as well as lattice imperfections in semiconductors.
Fiorenza Quasso, Giovanni Consolati
exaly   +2 more sources

Effect of Plasma on Polyethylene by Positron Lifetime Spectroscopy [PDF]

علوم و تکنولوژی پلیمر, 2022
Hypothesis: The use of plasma is widely used as a method to change polymer surfaces. The use of atmospheric cold plasma has more advantages than other plasma, laser and X-ray methods. This method is simple and it uses inexpensive equipment.
Maryam Azizi, Mahdieh Bakhtiari Ramezani, Effat Yahaghi, Mojtaba Nohekhan   +3 more
doaj   +2 more sources

Charge-Transfer-Mediated Boron Magneto-Ionics: Towards Voltage-Driven Multi-Ion Transport. [PDF]

Adv Sci (Weinh)
This study demonstrates voltage‐driven multi‐ion transport in FeBO systems, revealing simultaneous motion of B, Fe, and O ions enabled by charge‐transfer effects. By tuning oxidation states through oxygen incorporation, we achieve a transition from electrostatic‐like to electrochemical magneto‐ionic behavior. The findings establish boron magneto‐ionics,
Ma Z, Kantre KA, Tan H, Arredondo-López A, Liedke MO, Herrero-Martín J, Hirschmann E, Wagner A, Mora-Blanco D, Quintana A, Pané S, Pellicer E, Nogués J, Meersschaut J, Sort J, Menéndez E.   +15 more
europepmc   +2 more sources

Measurements of Defect Structures by Positron Annihilation Lifetime Spectroscopy of the Tellurite Glass 70TeO2-5XO-10P2O5-10ZnO-5PbF2 (X = Mg, Bi2, Ti) Doped with Ions of the Rare Earth Element Er3+

Nanoscale Research Letters, 2017
The objective of the study was the structural analysis of the 70TeO2-5XO-10P2O5-10ZnO-5PbF2 (X = Mg, Bi2, Ti) tellurite glasses doped with ions of the rare-earth elements Er3+, based on the PALS (positron annihilation lifetime spectroscopy) method of ...
K. Pach, J. Filipecki, E. Golis, El. S. Yousef, V. Boyko   +4 more
doaj   +2 more sources

Defect Characterization of the SiO₂/Si Interface Investigated by Drift-Assisted Positron Annihilation Lifetime Spectroscopy. [PDF]

Nanomaterials (Basel)
This study demonstrates drift-assisted positron annihilation lifetime spectroscopy on a p-type (100) silicon substrate in a MOS capacitor, using an applied electric field to control the spatial positron distribution prior to annihilation.
Helm R, Egger W, Corbel C, Sperr P, Butterling M, Wagner A, Liedke MO, Hirschmann E, Mitteneder J, Mayerhofer M, Lee K, Duesberg GS, Dollinger G, Dickmann M.   +13 more
europepmc   +2 more sources

Data on pure tin by Positron Annihilation Lifetime Spectroscopy (PALS) acquired with a semi-analog/digital setup using DDRS4PALS

Data in Brief, 2019
Positron annihilation lifetime spectroscopy (PALS) provides a powerful technique for non-destructive microstructure investigations in a broad field of material classes such as metals, semiconductors, polymers or porous glasses. Even though this method is
Danny Petschke, Ricardo Helm, Torsten E.M. Staab   +2 more
doaj   +2 more sources

Defect Studies in Thin-Film SiO₂ of a Metal-Oxide-Silicon Capacitor Using Drift-Assisted Positron Annihilation Lifetime Spectroscopy. [PDF]

Nanomaterials (Basel)
This work investigates the impact of an internal electric field on the annihilation characteristics of positrons implanted in a 180(10)nm SiO2 layer of a Metal-Oxide-Silicon (MOS) capacitor, using Positron Annihilation Lifetime Spectroscopy (PALS).
Helm R, Egger W, Corbel C, Sperr P, Butterling M, Wagner A, Liedke MO, Mitteneder J, Mayerhofer M, Lee K, Duesberg GS, Dollinger G, Dickmann M.   +12 more
europepmc   +2 more sources

Integrated anti-electronics for positron annihilation spectroscopy. [PDF]

Sci Rep
Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam.
Guatieri F.
europepmc   +2 more sources

Positron Annihilation Spectroscopy as a Diagnostic Tool for the Study of LiCoO₂ Cathode of Lithium-Ion Batteries

Condensed Matter, 2021
Positron annihilation spectroscopy using lifetime and Doppler broadening allows the characterization of the lithiation state in LiCoO2 thin film used in cathode of lithium-ion batteries.
Gioele Pagot, Valerio Toso, Bernardo Barbiellini, Rafael Ferragut, Vito Di Noto   +4 more
doaj   +1 more source