{"title":"Electrochemical Sensors Based on Carbon Allotrope Graphene: A Review on Their Environmental Applications","authors":"","doi":"10.15407/nnn.21.01.185","DOIUrl":"https://doi.org/10.15407/nnn.21.01.185","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46745382","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}
{"title":"Simulation Analysis of Formamidinium Lead Iodide Perovskite Solar Cells as Function of Thickness and Defects of Absorber Layer, Hole and Electron Transport Layer Under SCAPS-1D","authors":"","doi":"10.15407/nnn.21.01.087","DOIUrl":"https://doi.org/10.15407/nnn.21.01.087","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44996075","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}
{"title":"Studies on Ceramic-Nanoparticles-Doped Polymer for Modern Applications: Recent Review","authors":"","doi":"10.15407/nnn.21.01.163","DOIUrl":"https://doi.org/10.15407/nnn.21.01.163","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44163600","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}
The dielectric properties of polyvinyl alcohol/polyethylene glycol/TiN (PVA/PEG/TiN) nanocomposites are studied to use them in different electronic nanodevices. The PVA/PEG/TiN nanocomposites’ films are synthesized by using the casting method. The dielectric properties of PVA/PEG/TiN nano-composites are tested at frequency ( f ) ranged from 100 Hz to 5 MHz. The re-sults demonstrate that the dielectric properties of fabricated nanocomposites ( , and A.C. ) are improved with increase in the TiN-nanoparticles’ concentration. Components ( and ) of complex dielectric constant are decreased, while the A.C. electrical conductivity ( A.C. ) is increased with increase in the frequency. The results indicate that the PVA/PEG/TiN nanocomposites can be useful in different electronic nanodevices
{"title":"Improved Dielectric Properties of PVA/PEG/TiN Nanocomposites for Electronics Applications","authors":"","doi":"10.15407/nnn.21.01.125","DOIUrl":"https://doi.org/10.15407/nnn.21.01.125","url":null,"abstract":"The dielectric properties of polyvinyl alcohol/polyethylene glycol/TiN (PVA/PEG/TiN) nanocomposites are studied to use them in different electronic nanodevices. The PVA/PEG/TiN nanocomposites’ films are synthesized by using the casting method. The dielectric properties of PVA/PEG/TiN nano-composites are tested at frequency ( f ) ranged from 100 Hz to 5 MHz. The re-sults demonstrate that the dielectric properties of fabricated nanocomposites ( , and A.C. ) are improved with increase in the TiN-nanoparticles’ concentration. Components ( and ) of complex dielectric constant are decreased, while the A.C. electrical conductivity ( A.C. ) is increased with increase in the frequency. The results indicate that the PVA/PEG/TiN nanocomposites can be useful in different electronic nanodevices","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42144646","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}
S. Soliman, A. Soliman, Khalid Alzoubar, Joumaa Merza, Ali Alasmi
1.3-thiazole is a unique heterocycle containing nitrogen and sulphur atoms. Thiazole chemistry has developed after the pioneering it of Hofmann and Hantzsch in 1887. Thiazole occupies an important place in medicinal chemistry. It is widely found in diverse pharmacologically active substances and in some naturally occurring compounds. In last decade, heterocyclic compounds containing thiazole moiety and their derivatives were found exhibiting nanoscale properties. In addition, they exhibit a wide spectrum of biological activities such as antioxidant, antitubercular, antiinflammatory, anti-HIV, antitumor, anticonvulsive, antifungal and antibacterial. Thiazole is an essential in many natural (vitamin B1—thiamine) and synthetic medicinally important compounds. This review focus on both the chemical and biological importance of thiazole as a nanoparticle and the different methods of synthesis of substituted thiazole with potential activities, which are now in developing phase.
{"title":"Systematic Review on Thiazole Compounds as Nanoparticles: Chemistry, Synthesis, Antimicrobial Activities, Therapeutic Investigation","authors":"S. Soliman, A. Soliman, Khalid Alzoubar, Joumaa Merza, Ali Alasmi","doi":"10.15407/nnn.21.01.209","DOIUrl":"https://doi.org/10.15407/nnn.21.01.209","url":null,"abstract":"1.3-thiazole is a unique heterocycle containing nitrogen and sulphur atoms. Thiazole chemistry has developed after the pioneering it of Hofmann and Hantzsch in 1887. Thiazole occupies an important place in medicinal chemistry. It is widely found in diverse pharmacologically active substances and in some naturally occurring compounds. In last decade, heterocyclic compounds containing thiazole moiety and their derivatives were found exhibiting nanoscale properties. In addition, they exhibit a wide spectrum of biological activities such as antioxidant, antitubercular, antiinflammatory, anti-HIV, antitumor, anticonvulsive, antifungal and antibacterial. Thiazole is an essential in many natural (vitamin B1—thiamine) and synthetic medicinally important compounds. This review focus on both the chemical and biological importance of thiazole as a nanoparticle and the different methods of synthesis of substituted thiazole with potential activities, which are now in developing phase.","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45720615","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}
{"title":"Conditions for the Synthesis of Zinc Oxide Nanostructures from the Destruction Products of Overvoltage Nanosecond Discharge Between Zinc Electrodes in Oxygen Under Ultraviolet Irradiation of the Substrate","authors":"","doi":"10.15407/nnn.21.01.073","DOIUrl":"https://doi.org/10.15407/nnn.21.01.073","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49504760","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}
{"title":"Influence of Carbon Fibres on Properties of Composites Based on Sulfaryl-BSP-7 Copolymer","authors":"","doi":"10.15407/nnn.21.01.139","DOIUrl":"https://doi.org/10.15407/nnn.21.01.139","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44607733","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}
The peculiarities of light absorption in silver films of different thickness (2–20 nm) deposited on germanium underlayers of different mass thickness are experimentally investigated. The conditions of percolation transition in 5 nm thick silver films deposited on germanium underlayers in the range of 1 nm are studied. The influence of germanium underlayers with a mass thickness up to 1 nm with a step of 0.2 nm in the visible and near-infrared wavelength range (300–2500 nm) on the above-mentioned properties of silver films is investigated. Optical percolation in silver films is associated with the peculiarities of growth mechanisms and modes of formation of metal condensate on an amorphous glass substrate. As shown, the germanium underlayers previously applied to the glass substrate reduce the threshold thickness of the optical percolation transition in the silver film and increase their absorbency compared to similar films formed on a clean glass surface. The increase in the absorption capacity of films deposited on the surface of the germanium underlayer is due to a decrease in the average linear size of crystallites compared to similar samples formed on a clean glass surface, and thus, an increase in the number of scattering metal centres per unit surface area.
{"title":"Germanium Wetting Layers’ Dimensional Effect in Structural and Optical Properties of Silver Films","authors":"R. Bihun, M. Buchkovs’ka, B. P. Koman, D. Leonov","doi":"10.15407/nnn.20.04.929","DOIUrl":"https://doi.org/10.15407/nnn.20.04.929","url":null,"abstract":"The peculiarities of light absorption in silver films of different thickness (2–20 nm) deposited on germanium underlayers of different mass thickness are experimentally investigated. The conditions of percolation transition in 5 nm thick silver films deposited on germanium underlayers in the range of 1 nm are studied. The influence of germanium underlayers with a mass thickness up to 1 nm with a step of 0.2 nm in the visible and near-infrared wavelength range (300–2500 nm) on the above-mentioned properties of silver films is investigated. Optical percolation in silver films is associated with the peculiarities of growth mechanisms and modes of formation of metal condensate on an amorphous glass substrate. As shown, the germanium underlayers previously applied to the glass substrate reduce the threshold thickness of the optical percolation transition in the silver film and increase their absorbency compared to similar films formed on a clean glass surface. The increase in the absorption capacity of films deposited on the surface of the germanium underlayer is due to a decrease in the average linear size of crystallites compared to similar samples formed on a clean glass surface, and thus, an increase in the number of scattering metal centres per unit surface area.","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43926857","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}
Aninda Kartika Dewi, Andrie Harmaji, Rinawati Satrio, B. Sunendar
Composite is one of the direct dental restoration materials, which is consisted of three main components such as matrix, filler, and coupling agent. Metakaolin and zirconia are potential alternatives as dental restoration materials. This study aims to determine the characteristics of synthesized metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca as a template. The study is a pure experimental laboratory investigation. The sample is fabricated by means of both the synthesis of metakaolin, zirconia, alkali activator, chitosan and the addition of tapioca of 0.4% v/v, 0.8% v/v, and 1.6% v/v. Alkali solution consisting of NaOH and Na 2 SiO 3 is used to activate the geopolymerization of me-takaolin. Nanocomposite characteristics with variations of the addition of tapioca template are then evaluated for its hardness and microstructure. Synthesis of metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca template is successful, and it has a mean hardness value, which has met the hardness value used for dental composite restoration and has the best attachment to artificial teeth. The best hardness value is of 51.70 VHN achieved by the
{"title":"The Effect of Tapioca on Morphological and Mechanical Properties of Metakaolin–Zirconia Geopolymer for Dental Restorative Nanocomposite","authors":"Aninda Kartika Dewi, Andrie Harmaji, Rinawati Satrio, B. Sunendar","doi":"10.15407/nnn.20.04.895","DOIUrl":"https://doi.org/10.15407/nnn.20.04.895","url":null,"abstract":"Composite is one of the direct dental restoration materials, which is consisted of three main components such as matrix, filler, and coupling agent. Metakaolin and zirconia are potential alternatives as dental restoration materials. This study aims to determine the characteristics of synthesized metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca as a template. The study is a pure experimental laboratory investigation. The sample is fabricated by means of both the synthesis of metakaolin, zirconia, alkali activator, chitosan and the addition of tapioca of 0.4% v/v, 0.8% v/v, and 1.6% v/v. Alkali solution consisting of NaOH and Na 2 SiO 3 is used to activate the geopolymerization of me-takaolin. Nanocomposite characteristics with variations of the addition of tapioca template are then evaluated for its hardness and microstructure. Synthesis of metakaolin–zirconia geopolymer nanocomposite with the addition of tapioca template is successful, and it has a mean hardness value, which has met the hardness value used for dental composite restoration and has the best attachment to artificial teeth. The best hardness value is of 51.70 VHN achieved by the","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42980398","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}
ahmad Al-Hamdan, A. Al-Falah, Fawaz Al-Deri, Ali Alasmi, Joumaa Merza, Mirna Jabbour, Waed Abodaboos
In this paper, polyfurfural is synthesized by hydrochloric acid as catalyst in ethanol. The resulting polymer is characterized by FT/IR, EDS and XPS to determine the polymer structure. By SEM, the morphology of resulting polymer is studied. As found, the polymer consists of globule particles, which clump together and form clusters with average size of about 700 nm. Globule particles are composed of small spherical particles with an average size of 18.6 nm. Polymer thin film is fabricated by anchoring on glass; thin film has rough surface ( Rms 2.12 0.3 nm) and nanoparticles size of 17.8 nm. Based on x-ray diffraction, the crystallization ratio and the nanocrystals’ size (7.42 nm) are calculated. A new method for the determining nanoparticle size from x-ray diffraction data is proposed. The particle size is of 16.18 nm that is less than the size specified by SEM or AFM.
{"title":"Synthesis and Characterization of Polyfurfural Nanoparticle","authors":"ahmad Al-Hamdan, A. Al-Falah, Fawaz Al-Deri, Ali Alasmi, Joumaa Merza, Mirna Jabbour, Waed Abodaboos","doi":"10.15407/nnn.20.04.971","DOIUrl":"https://doi.org/10.15407/nnn.20.04.971","url":null,"abstract":"In this paper, polyfurfural is synthesized by hydrochloric acid as catalyst in ethanol. The resulting polymer is characterized by FT/IR, EDS and XPS to determine the polymer structure. By SEM, the morphology of resulting polymer is studied. As found, the polymer consists of globule particles, which clump together and form clusters with average size of about 700 nm. Globule particles are composed of small spherical particles with an average size of 18.6 nm. Polymer thin film is fabricated by anchoring on glass; thin film has rough surface ( Rms 2.12 0.3 nm) and nanoparticles size of 17.8 nm. Based on x-ray diffraction, the crystallization ratio and the nanocrystals’ size (7.42 nm) are calculated. A new method for the determining nanoparticle size from x-ray diffraction data is proposed. The particle size is of 16.18 nm that is less than the size specified by SEM or AFM.","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44461873","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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