Published September 2021
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Microwave properties of hollow carbon spheres with different electrical conductivities
Creators
- 1. Institute for nuclear problems, Belarusian state university, Minsk (Belarus)
- 2. Vilnius university, Vilnius (Lithuania)
- 3. Universite de Lorraine, CNRS, IJL, Epinal (France)
- 4. Fraunhofer institute for silicate research ISC, Wurzburg (Germany)
- 5. Institute of photonics, university of Eastern Finland, Joensuu (Finland)
Description
Hollow carbon spheres (HCS) were prepared by hydrothermal treatment of sugar alcohols encapsulated in a UV-cured polymer followed by carbonization at different temperatures, ranging from 500 to 1500 ℃. Spheres with a significant variation in electrical conductivity, in the range of 10-6 - 104 S/m, were obtained in a controlled manner. The electromagnetic properties of non-compact rectangular arrays of HCS were investigated in the microwave frequency range. The best absorption performance at 30 GHz was shown by the sample prepared at 700 ℃, whose conductivity is optimized to achieve a high absorption ability at the given HCS shell thickness vs its skin depth. (authors)
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Additional details
Additional titles
- Original title (English)
- Vzaimodejstvie izluchenij s tverdym telom. Materialy 14. Mezhdunarodnoj konferentsii, posvyashchennoj 100-letiyu Belorusskogo gosydarstvennogo universitena
Publishing Information
- Imprint Place
- Minsk (Belarus)
- Imprint Title
- Interaction of radiation with solids. Proceedings of 14. International conference, dedicated to the 100th anniversary of the Belarusian state university
- Imprint Pagination
- 618 p.
- Journal Page Range
- p. 247-249
- ISSN
- 2706-9060
- Report number
- INIS-BY--108
Conference
- Title
- 14. International conference 'Interaction of radiation with solids'
- Original Conference Title
- 14. Mezhdunarodnaya konferentsiya 'Vzaimodejstvie izluchenij s tverdym telom'
- Dates
- 21 Sep - 24 Sep 2021
- Place
- Minsk (Belarus)
INIS
- Country of Publication
- Belarus
- Country of Input or Organization
- Belarus
- INIS RN
- 54123813
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALCOHOLS; CARBON; CARBONIZATION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ENCAPSULATION; HYDROTHERMAL SYNTHESIS; MAGNETIC PROPERTIES; MICROWAVE RADIATION; POLYMERS; SACCHAROSE; SPHERES; TEMPERATURE DEPENDENCE
- Descriptors DEC
- CARBOHYDRATES; CHEMICAL REACTIONS; DECOMPOSITION; DISACCHARIDES; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ELEMENTS; HYDROXY COMPOUNDS; NONMETALS; OLIGOSACCHARIDES; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; SACCHARIDES; SYNTHESIS
Optional Information
- Notes
- 10 refs., 1 TAB., 1 fig. Imprint:Vzaimodejstvie izluchenij s tverdym telom. Materialy 14. Mezhdunarodnoj konferentsii, posvyashchennoj 100-letiyu Belorusskogo gosydarstvennogo universitena