Study of sensor properties of zinc oxide based nanostructures

Nalimova, S. S.; Kondrat'ev, V. M.; Ryabko, A. A.; Maksimov, A. I.; Мошников, В. А.

doi:10.1088/1742-6596/1658/1/012033

Cited by 7 publications

(3 citation statements)

References 22 publications

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“…ZnO and ZnO/ZnFe2O4 structures were formed on sensor platforms with NiCr/Ni/Au interdigitated electrodes. ZnO nanowires were produced by hydrothermal synthesis described in details in [10,11]. First, seed layers consisting of zinc oxide nanoparticles were formed by spin-coating (3 cycles) of zinc acetate dehydrate aqueous solution (5 mM).…”

Section: Methodsmentioning

confidence: 99%

Synthesis and study of gas sensitive ZnFe₂O₄-modified ZnO nanowires

Aubekerov

Punegova

Sergeenko

et al. 2022

J. Phys.: Conf. Ser.

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Currently, new nanostructured materials based on composite metal oxides is of great interest for the development of gas sensors with improved functional characteristics. In this work, zinc oxide nanowires were synthesized by hydrothermal method. Hierarchical ZnO/ZnFe2O4 nanostructures were obtained by immersion of zinc oxide layers in ferrous sulphate aqueous solution. The mechanism of zinc ferrite formation during the interaction of zinc oxide with iron sulphate is considered. The crystal structure of ZnO and ZnO/ZnFe2O4 were studied by Raman spectroscopy. The sensitivity of ZnO and ZnO/ZnFe2O4 nanostructures to isopropyl alcohol vapors was analyzed. It was shown that there is an optimal concentration of ferrous sulphate used to modify zinc oxide nanowires and synthesize ZnO/ZnFe2O4 composite nanostructures.

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Section: Methodsmentioning

confidence: 99%

Synthesis and study of gas sensitive ZnFe₂O₄-modified ZnO nanowires

Aubekerov

Punegova

Sergeenko

et al. 2022

J. Phys.: Conf. Ser.

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“…From the result of interview above, it can be seen that students feel fun by using technology (Nalimova et al, 2020) and get better at speaking. Speaking is an oral skill that involves creating a verbal sentence structure to transmit meaning, according to Nunan (2003:43).…”

Section: Rosetta Stone Provides Sufficient Variety In Speaking Practicementioning

confidence: 97%

English Speaking Skill through Rosetta Stone Application at Junior High School: Students’ Voices

Anisah Firly Chaniago,

Benni Ichsanda Rahman HZ

2024

didaktika.j.kep

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This study aims to explore the impact of utilizing the Rosetta stone application as a means to improve English speaking skills among second-grade junior high school students. The study employs a qualitative case study approach and data content analysis to delve deeply into the experiences and perceptions of the students regarding their English-speaking skill development through the application. Using a modified questionnaire and depth interviews, the researcher collected data through share the questionnaires to 34 students and interviews conducted with three participants. The results reveal that the majority of students express positive perceptions about the application's impact on English speaking abilities, citing improvements in confidence, vocabulary, accent, and overall learning experience. Overall, these findings underline the dynamic nature of language learning and the potential for continuous improvement in educational technology through targeted enhancements and further empirical exploration. These findings underscore the effectiveness of integrating technology like Rosetta Stone in language learning environments, offering diverse speaking practice opportunities, immersive learning experiences, and targeted feedback that contribute to overall language proficiency. The findings of this study could be useful for language learners who are seeking to improve their language skills as well as for educators and developers who are interested in creating effective language learning tools.

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“…Presently, the said problems are solved by developing the adsorption gas sensors based on the metal oxides, which operate at lower temperature, i.e. at the room temperature [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Sensitization of ZnO nanorods by AgInS-=SUB=-2-=/SUB=- colloidal quantum dots for adsorption gas sensors with light activation

et al. 2022

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A low-temperature technique for the formation of coatings based on ZnO nanorods decorated with colloidal AgInS2 quantum dots is presented. It is shown that ZnO nanocrystals and colloidal AgInS2 quantum dots with a shell of mercaptopropionic acid molecules form a heterojunction. Sensitization of ZnO nanorods with AgInS2 colloidal quantum dots to visible irradiation provides a gas analytical response of the structure to isopropyl alcohol vapor at room temperature under blue LED illumination with a peak wavelength of 460 nm. Keywords: adsorption gas sensors, photoactivation of gas sensitivity, zinc oxide nanorods, AgInS2 colloidal quantum dots, sensitization.

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Study of sensor properties of zinc oxide based nanostructures

Cited by 7 publications

References 22 publications

Synthesis and study of gas sensitive ZnFe₂O₄-modified ZnO nanowires

Synthesis and study of gas sensitive ZnFe₂O₄-modified ZnO nanowires

English Speaking Skill through Rosetta Stone Application at Junior High School: Students’ Voices

Sensitization of ZnO nanorods by AgInS-=SUB=-2-=/SUB=- colloidal quantum dots for adsorption gas sensors with light activation

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Study of sensor properties of zinc oxide based nanostructures

Cited by 7 publications

References 22 publications

Synthesis and study of gas sensitive ZnFe2O4-modified ZnO nanowires

Synthesis and study of gas sensitive ZnFe2O4-modified ZnO nanowires

English Speaking Skill through Rosetta Stone Application at Junior High School: Students’ Voices

Sensitization of ZnO nanorods by AgInS-=SUB=-2-=/SUB=- colloidal quantum dots for adsorption gas sensors with light activation

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Product

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Synthesis and study of gas sensitive ZnFe₂O₄-modified ZnO nanowires

Synthesis and study of gas sensitive ZnFe₂O₄-modified ZnO nanowires