Results 111 to 120 of about 1,771,729 (203)

Defect evolution in nitrogen-implanted CVD diamond during thermal annealing: The formation of NV centers and vacancy clusters

Materials & Design
We investigate the thermal evolution of implantation-induced defects in single-crystal CVD diamond using depth-resolved positron annihilation lifetime spectroscopy (PALS). Samples were implanted with 0.5MeV N+ ions at a fluence of 1×1014cm−2 and annealed
Marcel Dickmann, Ricardo Helm, Werner Egger, Johannes Mitteneder, Peter Sperr, Michael Mayerhofer, Maik Butterling, Eric Hirschmann, Maciej Oskar Liedke, Andreas Wagner, Joachim Dorner, Thomas Schwarz-Selinger, Günther Dollinger   +12 more
doaj   +1 more source

Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy. [PDF]

Nanomaterials (Basel), 2021
Han X, Chen T, Zhao Y, Gao J, Sang Y, Xiong H, Chen Z.   +6 more
europepmc   +1 more source

Hierarchical Nature of Nanoscale Porosity in Bone Revealed by Positron Annihilation Lifetime Spectroscopy. [PDF]

ACS Nano, 2021
Ahn T, Gidley DW, Thornton AW, Wong-Foy AG, Orr BG, Kozloff KM, Banaszak Holl MM.   +6 more
europepmc   +1 more source

Thermal isomerization of azo-benzene in PMMA probed by a pulsed low-energy positron beam

, 2004
Polymers containing the Azo-benzene group have attracted attention due to anticipated uses such as materials for data storage, membranes with controllable permeability and materials with changeable solubility [1,2].
Egger, W, Skeppstedt, V, Algers, John,, Sperr, P, Maurer, Frans,, Lund University.   +5 more
core  

Neutron Damage in Reactor Pressure-Vessel Steel Examined with Positron Annihilation Lifetime Spectroscopy

, 1996
We have used positron annihilation lifetime spectroscopy to study the development of damage and annealing behavior of neutron-irradiated reactor pressure-vessel steels.
Gary L. Catchen, Stephen E. Cumblidge, Arthur T. Motta   +2 more
core   +1 more source

Poster Sessions

HemaSphere, Volume 10, Issue S1, June 2026.
wiley   +1 more source

Investigation on the porosity of zeolite NU-88 by means of positron annihilation lifetime spectroscopy

, 2009
Seven well characterized zeolites were investigated by positron annihilation lifetime spectroscopy. The lifetime spectra were analysed in four discrete components.
CONSOLATI, GIOVANNI, MARIANI, MARIO, R. Millini, QUASSO, FIORENZA   +3 more
core   +1 more source

Publication Only

HemaSphere, Volume 10, Issue S1, June 2026.
wiley   +1 more source

Copper Precipitation in Aluminum Alloys Observed by Coincidence Doppler-Broadening Spectroscopy and Positron Annihilation Lifetime Spectroscopy

The Cu content in Al alloys significantly influences the solidification and precipitation microstructure, which is crucial for tailoring material properties in aerospace and automotive engineering applications.
Mathes, Lucian, Hugenschmidt, Christoph, Liedke, Maciej Oskar, Suhr, Maximilian, Butterling, Maik, Heinl, Leon, Hirschmann, Eric   +6 more
core   +1 more source

Free-Volume Studies in Polycaprolactone/Poly(propylene oxide) Urethane/Urea Membranes by Positron Lifetime Spectroscopy [PDF]

, 2020
Positron annihilation lifetime spectroscopy was used to study the free volume parameters in polypropylene oxide-based tri-isocyanate terminated prepolymer/polycaprolactone diol bi-soft urethane/urea membranes (PU/PCL) with PCL content from 5 up to 25 wt%.
A P De Lima, P Major, Zs Kajcsos, M F Ferreira Marques, P M Gordo, M Norberta De Pinho, D P Queiroz   +6 more
core