Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912345
M. Godlewski, J. Kaszewski, E. Wolska, M. Godlewski
First generation of biomarkers (fluorescence labels) is based on organic dyes. To replace them nanoparticles (NPs)/quantum dots (QDs) of highly fluorescent CdTe-, CdS- and CdSe-based biomarkers were introduced. Despite the fact that these NPs show some advantageous properties, their use is limited by blinking, spectral diffusion of emission and use of cadmium, which should be avoided in the case of biological and medical applications. This fact motivated us to develop new generation of biomarkers using biocompatible oxides - ZnO, ZnAl2O4 and ZrO2. Their emission is activated by doping with rare earth (RE) ions.
{"title":"Rare earth doped nanoparticles of oxides for biomarkers applications","authors":"M. Godlewski, J. Kaszewski, E. Wolska, M. Godlewski","doi":"10.1109/OMEE.2014.6912345","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912345","url":null,"abstract":"First generation of biomarkers (fluorescence labels) is based on organic dyes. To replace them nanoparticles (NPs)/quantum dots (QDs) of highly fluorescent CdTe-, CdS- and CdSe-based biomarkers were introduced. Despite the fact that these NPs show some advantageous properties, their use is limited by blinking, spectral diffusion of emission and use of cadmium, which should be avoided in the case of biological and medical applications. This fact motivated us to develop new generation of biomarkers using biocompatible oxides - ZnO, ZnAl2O4 and ZrO2. Their emission is activated by doping with rare earth (RE) ions.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124966987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912321
V. Lutsyk, A. Zelenaya
The investigation of concentration fields of T-x-y diagram is considered by use of its computer model. Phase diagram of CaO-SiO2-Al2O3 system is used as an example.
利用其计算机模型研究了T-x-y图的浓度场。以CaO-SiO2-Al2O3体系相图为例。
{"title":"Investigation of crystallization stages in the ternary oxide systems by means of computer model","authors":"V. Lutsyk, A. Zelenaya","doi":"10.1109/OMEE.2014.6912321","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912321","url":null,"abstract":"The investigation of concentration fields of T-x-y diagram is considered by use of its computer model. Phase diagram of CaO-SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> system is used as an example.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128099455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912383
Y. Zorenko, V. Gorbenko, T. Zorenko, Y. Vasyl’kiv, K. Fabisiak, H. Wrzesinski, M. Nikl, J. Mares, A. Beitlerová, R. Kučerková, A. Fedorov
This work is dedicated to studying the growth processes and luminescent properties of the single crystalline films of Ce doped Tb3-xGdxAl5O12:Ce garnets, x=0÷2.5, grown by the Liquid Phase Epitaxy (LPE) method from melt-solutions based on the PbO-B2O3 flux.
{"title":"Growth and luminescent properties of (Tb,Gd)3Al5O12:Ce single crystalline films","authors":"Y. Zorenko, V. Gorbenko, T. Zorenko, Y. Vasyl’kiv, K. Fabisiak, H. Wrzesinski, M. Nikl, J. Mares, A. Beitlerová, R. Kučerková, A. Fedorov","doi":"10.1109/OMEE.2014.6912383","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912383","url":null,"abstract":"This work is dedicated to studying the growth processes and luminescent properties of the single crystalline films of Ce doped Tb<sub>3-x</sub>Gd<sub>x</sub>Al<sub>5</sub>O<sub>12</sub>:Ce garnets, x=0÷2.5, grown by the Liquid Phase Epitaxy (LPE) method from melt-solutions based on the PbO-B<sub>2</sub>O<sub>3</sub> flux.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132501009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912351
S. Yuryev, S. Yushchuk, F. Tsiupko, S. Dubelt, V. Loboiko
The fine powder of magnetite Fe3O4 was obtained by precipitation of aqueous solutions of chemically pure Mohr's salt Fe(NH4)2(SO4)2·6H2O and FeCl3 using concentrated NH4OH. The fine powders with the particle size from 5 to 25 nm were obtained. Some portions of powders were subjected to heat treatment in air at temperatures of 473, 573 and 673 K. This annealing leads to the formation of γ-Fe2O3. The parameters of hyperfine interactions for these ions in the crystal structure of Fe3O4 and γ-Fe2O3 by the nuclear gamma-resonance method (NGR) were obtained and difference in occupations of iron ions in octa- and tetra-sublattice compared to stoichiometric magnetite was revealed.
{"title":"Hyperfine interactions and magnetic properties of nanosized powders of magnetite","authors":"S. Yuryev, S. Yushchuk, F. Tsiupko, S. Dubelt, V. Loboiko","doi":"10.1109/OMEE.2014.6912351","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912351","url":null,"abstract":"The fine powder of magnetite Fe<sub>3</sub>O<sub>4</sub> was obtained by precipitation of aqueous solutions of chemically pure Mohr's salt Fe(NH<sub>4</sub>)<sub>2</sub>(SO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O and FeCl<sub>3</sub> using concentrated NH<sub>4</sub>OH. The fine powders with the particle size from 5 to 25 nm were obtained. Some portions of powders were subjected to heat treatment in air at temperatures of 473, 573 and 673 K. This annealing leads to the formation of γ-Fe<sub>2</sub>O<sub>3</sub>. The parameters of hyperfine interactions for these ions in the crystal structure of Fe<sub>3</sub>O<sub>4</sub> and γ-Fe<sub>2</sub>O<sub>3</sub> by the nuclear gamma-resonance method (NGR) were obtained and difference in occupations of iron ions in octa- and tetra-sublattice compared to stoichiometric magnetite was revealed.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131234141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912431
Y. Malyukin
Luminescence and scintillation processes in nanomaterials can differ sufficiently from the same processes in bulk crystals. A range of effects providing such a difference (confinement of electronic and phonon states, Purcell's effect, migration of defects to the surface) are discussed in the paper.
{"title":"Features of luminescence formation in activated nanocrystals and fundamental premises for their application in scintillation technique","authors":"Y. Malyukin","doi":"10.1109/OMEE.2014.6912431","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912431","url":null,"abstract":"Luminescence and scintillation processes in nanomaterials can differ sufficiently from the same processes in bulk crystals. A range of effects providing such a difference (confinement of electronic and phonon states, Purcell's effect, migration of defects to the surface) are discussed in the paper.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133996652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912397
S. Nedilko, O. Chukova, S. Nedilko, T. Voitenko, V. Sheludko, O. Gomenyuk
The La1-xEuxVO4 powders were synthesized by co-precipitation method. Luminescence spectra of the investigated samples consist of wide non-structural bands of the matrix emission and narrow spectral lines caused by inner f-f electron transitions in the impurity Eu3+ ions. The both types of emission were studied within 10 - 300 K temperature range. Obtained dependencies are discussed using proposed models for matrix emission and structure of the nearest surrounding of the Eu3+ centers.
{"title":"Temperature behavior of matrix and impurity emission of La1−xEuxVO4 powders synthesized by co-precipitation method","authors":"S. Nedilko, O. Chukova, S. Nedilko, T. Voitenko, V. Sheludko, O. Gomenyuk","doi":"10.1109/OMEE.2014.6912397","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912397","url":null,"abstract":"The La<sub>1-x</sub>Eu<sub>x</sub>VO<sub>4</sub> powders were synthesized by co-precipitation method. Luminescence spectra of the investigated samples consist of wide non-structural bands of the matrix emission and narrow spectral lines caused by inner f-f electron transitions in the impurity Eu<sup>3+</sup> ions. The both types of emission were studied within 10 - 300 K temperature range. Obtained dependencies are discussed using proposed models for matrix emission and structure of the nearest surrounding of the Eu<sup>3+</sup> centers.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126507258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912346
N. Strutynska, N. Slobodyanik, A. Malyshenko, I. Zatovsky, I. Vorona, M. Epple, O. Prymak, N. Baran, S. Ishchenko, V. Nosenko
The results of a comparative study of amorphous (Na, CO3)- and (K, CO3)-containing apatites by TPM MS analysis, FTIR, XRD, SEM and EPR are presented. Annealing of amorphous apatite at temperatures below 400°C does not lead to changing of nanoparticle shape and size and an extent of its crystallinity. A significant difference in the formation of γ-induced defects in (Na, CO3)- and (K,CO3)-containing apatites was found.
{"title":"Synthesis, characterization and EPR investigation of γ-induced defects for nanoparticles of (MI, CO3)-containing (MI - Na, K) apatites","authors":"N. Strutynska, N. Slobodyanik, A. Malyshenko, I. Zatovsky, I. Vorona, M. Epple, O. Prymak, N. Baran, S. Ishchenko, V. Nosenko","doi":"10.1109/OMEE.2014.6912346","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912346","url":null,"abstract":"The results of a comparative study of amorphous (Na, CO<sub>3</sub>)- and (K, CO<sub>3</sub>)-containing apatites by TPM MS analysis, FTIR, XRD, SEM and EPR are presented. Annealing of amorphous apatite at temperatures below 400°C does not lead to changing of nanoparticle shape and size and an extent of its crystallinity. A significant difference in the formation of γ-induced defects in (Na, CO<sub>3</sub>)- and (K,CO<sub>3</sub>)-containing apatites was found.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122166462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912393
M. Miroshnichenko, K. Terebilenko, I. Tokmenko, Y. Hizhnyi, V. Chornii, S. Nedilko, N. Slobodyanik
Solid solutions KBi(MoO4)2:Eu3+ have been prepared by solid state synthesis and characterized by powder X-ray diffraction. The structure of KBi(MoO4)2 represents 3D framework built up from MoO4 and BiO8 species, while potassium cation has been found to share one position with bismuth.
{"title":"Synthesis, structure and luminescence properties of KBi(MoO4)2:Eu3+","authors":"M. Miroshnichenko, K. Terebilenko, I. Tokmenko, Y. Hizhnyi, V. Chornii, S. Nedilko, N. Slobodyanik","doi":"10.1109/OMEE.2014.6912393","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912393","url":null,"abstract":"Solid solutions KBi(MoO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup> have been prepared by solid state synthesis and characterized by powder X-ray diffraction. The structure of KBi(MoO<sub>4</sub>)<sub>2</sub> represents 3D framework built up from MoO<sub>4</sub> and BiO<sub>8</sub> species, while potassium cation has been found to share one position with bismuth.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129142635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912371
S. Nedilko
Experimental and theoretical results about contribution of molecular anionic (MA) groups into luminescence of ion-covalent, in other words, HeteroDesmic Crystals (HDC,) are presented in this work. Obtained results are discussed using many published data and previously performed studies at R&D Lab. “Condensed Matter Spectroscopy (COMS)” of Kyiv National Taras Shevchenko University.
{"title":"Molecular ions in luminescence of complex oxide heterodesmic crystals","authors":"S. Nedilko","doi":"10.1109/OMEE.2014.6912371","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912371","url":null,"abstract":"Experimental and theoretical results about contribution of molecular anionic (MA) groups into luminescence of ion-covalent, in other words, HeteroDesmic Crystals (HDC,) are presented in this work. Obtained results are discussed using many published data and previously performed studies at R&D Lab. “Condensed Matter Spectroscopy (COMS)” of Kyiv National Taras Shevchenko University.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123468991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912381
V. Baumer, M. Kosmyna, B. P. Nazarenko, V. Puzikov, I. Radchenko, A. N. Shekhovtsov
The pure Ca3Y2(BO3)4 single crystals were grown by the Czochralski method using an inert and oxygen containing atmospheres and characterized by means of powder X-ray diffraction, optical spectroscopy. The microhardness Hv and fracture toughness K1c of single crystals were studied too. The peculiarities of Ca3Y2(BO3)4 crystal growth are discussed.
{"title":"Peculiarities of Ca3Y2(BO3)4 crystal growth","authors":"V. Baumer, M. Kosmyna, B. P. Nazarenko, V. Puzikov, I. Radchenko, A. N. Shekhovtsov","doi":"10.1109/OMEE.2014.6912381","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912381","url":null,"abstract":"The pure Ca<sub>3</sub>Y<sub>2</sub>(BO<sub>3</sub>)<sub>4</sub> single crystals were grown by the Czochralski method using an inert and oxygen containing atmospheres and characterized by means of powder X-ray diffraction, optical spectroscopy. The microhardness H<sub>v</sub> and fracture toughness K<sub>1c</sub> of single crystals were studied too. The peculiarities of Ca<sub>3</sub>Y<sub>2</sub>(BO<sub>3</sub>)<sub>4</sub> crystal growth are discussed.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125063571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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