Highly luminous scintillating nanocomposites enable ultrafast time coincidence resolution for γ-rays detection with heterostructured multilayer scintillators
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00604582" target="_blank" >RIV/68378271:_____/25:00604582 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0362036" target="_blank" >https://hdl.handle.net/11104/0362036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.202421434" target="_blank" >10.1002/adfm.202421434</a>
Alternative languages
Result language
angličtina
Original language name
Highly luminous scintillating nanocomposites enable ultrafast time coincidence resolution for γ-rays detection with heterostructured multilayer scintillators
Original language description
Brighter fast scintillators are needed for advanced applications to acquire data with high signal-to-noise ratio in short time windows, like in the time-of-flight positron emission tomography (ToF-PET) imaging technique for cancer. A new composite polymeric fast scintillator loaded with high-density hafnium dioxide nanoparticles is developed here to be used for detection of the 511 keV gama-rays employed in ToF-PET. By a fine tuning and engineering of the electronic properties of its components, namely the polymeric matrix, the dense nanoparticles and the embedded fluorescent dye, a highly luminous polymeric scintillating nanocomposite is realized, showing an unprecedented scintillation efficiency for plastic materials and nanosecond-scaled scintillation decay. Nanocomposite films are then coupled to dense bismuth germanate (BGO) crystal sheets to fabricate an heterostructured multilayer scintillator as a prototype pixel for ToF-PET scanners. Thanks to the nanocomposite high scintillation efficiency, the prototype detector shows an ultrafast time resolution of 115 ps for 511 keV gama-rays detection, actually limited by the non-optimal light transport properties in the pixel and by the sensitivity of the employed photodetector.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Functional Materials
ISSN
1616-301X
e-ISSN
1616-3028
Volume of the periodical
35
Issue of the periodical within the volume
17
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
2421434
UT code for WoS article
001380227400001
EID of the result in the Scopus database
2-s2.0-105003751047