Results 161 to 170 of about 40,261 (187)

Ultraviolet-water-induced angstrom-sized channels in membrane for precise ion sieving. [PDF]

Natl Sci Rev
Cheng Y, Meng B, Yao H, Shi H, Liu G, Chen G, Liu G, Jin W, Xu N.   +8 more
europepmc   +1 more source

In Vivo Intralesional Positronium Lifetime Imaging of Thyroid Cancer Using Clinically Routine I-124 PET/CT

Mercolli L, Steinberger WM, Läppchen T, Amon M, Bregenzer C, Conti M, Cardoso ÂRF, Mingels C, Moskal P, Rathod N, Sari H, Stępień EŁ, Weidner S, Rominger A, Shi K, Seifert R.   +15 more
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Identification of Point Defects in Multielement Compounds and Alloys with Positron Annihilation Spectroscopy: Challenges and Opportunities

Physica Status Solidi (a), 2021
Three topical materials systems are discussed from the point of view of point defect characterization with positron annihilation spectroscopy. The family of III‐nitride semiconductors and device structures made thereof poses interesting challenges for ...
F. Tuomisto
semanticscholar   +1 more source

The Influence of Free Volume Determined by Positron Annihilation Lifetime Spectroscopy (PALS) on Gas Permeability of Cellulose Nanocrystals Films.

ACS Applied Materials and Interfaces, 2020
Cellulose nanocrystals (CNCs) are of increasing interest for packaging applications because of their biodegradability, low cost, high crystallinity and high aspect ratio. The objective of this study was to use positron annihilation lifetime spectroscopy (
M. Nuruddin, Reaz A. Chowdhury, N. Lopez-Perez, Francisco Montes, J. Youngblood, J. Howarter   +5 more
semanticscholar   +1 more source

Investigation of Compression-Induced Deformations in Local Structure and Pore Architecture of ZIF-8 Using FTIR, X-ray Absorption, and Positron Annihilation Spectroscopy

Journal of Physical Chemistry C, 2019
Compression-induced (≤1.01 GPa) phase transformation, local deformations, and pore architecture modifications in zeolitic-imidazole framework (ZIF-8) powder have been investigated, ex situ, using X-ray diffraction, extended X-ray absorption fine ...
S. Sharma, K. Sudarshan, A. K. Yadav, S. Jha, D. Bhattacharyya, P. K. Pujari   +5 more
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Ga vacancies and electrical compensation in β-Ga2O3 thin films studied with positron annihilation spectroscopy

OPTO, 2019
We have applied positron annihilation spectroscopy to study vacancy-type defects in unintentionally doped and Si and Sn doped β-Ga2O3 homoepitaxial thin films grown by metal-organic chemical vapor deposition (MOCVD).
F. Tuomisto, A. Karjalainen, V. Prozheeva, I. Makkonen, G. Wagner, M. Baldini   +5 more
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Free Volume in Poly(ether imide) Membranes Measured by Positron Annihilation Lifetime Spectroscopy and Doppler Broadening of Annihilation Radiation

Macromolecules, 2018
In order to characterize the free volume of a homologous series all-aromatic poly(ether imide) (PEI) membranes, two positron annihilation techniques were utilized: positron annihilation lifetime spectroscopy (PALS) and Doppler broadening (DB) of ...
Z. Madzarevic, H. Schut, J. Čížek, T. Dingemans   +3 more
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Tuning of p-n-p-Type Conduction in AgCuS through Cation Vacancy: Thermopower and Positron Annihilation Spectroscopy Investigations.

Inorganic Chemistry, 2018
Understanding the complex phenomenon behind the structural transformations is a key requisite to developing important solid-state materials with better efficacy such as transistors, resistive switches, thermoelectrics, etc.
Moinak Dutta, D. Sanyal, K. Biswas
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Positron annihilation spectroscopy investigation of defects in neutron irradiated tungsten materials

International Journal of Refractory Metals and Hard Materials, 2022
V. Chatzikos, K. Mergia, G. Bonny, D. Terentyev, D. Papadakis, G. Pavlou, S. Messoloras   +6 more
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