IOSR-JAP   Volume-16 ~ Issue-6 ~ Nov. – Dec. 2024

ABSTRACT: Summary The research performs a comprehensive review of the literature on ternary elements in nanotechnology, contextualizing the current scenario of scientific advances in this field. The general objective is to deepen the understanding of the properties, synthesis methods and applications of these nanostructured systems. The adopted methodology consists of a literature review, exploring sources in the SCIELO, Google Scholar and CAPES databases over the last 10 years, both in Portuguese and English. The analysis of the results obtained seeks to identify trends, significant advances and gaps in knowledge, contributing to the current state of knowledge on ternary elements in nanotechnology.

Keywords: Nanotechnology. Ternary elements. Nanostructured properties. Synthesis of nanomaterials

[1] Alves, Ol, Et Al.. Decomposition Of Metalorganic Precursors: A Chemical Technique For Obtaining Thin Films. Química Nova, 25(1), 69-77. Institute Of Chemistry, State University Of Campinas, Cp 6154, 13083-970 Campinas - Sp. Department Of Fundamental Chemistry/Ccen, Federal University Of Pernambuco, 50740-540 Recife – Pe,2002.
[2] Ariga, Katsuhiko; Nishikawa, Michihiro; Mori, Taizo; Takeya, Jun; Shrestha, Lok Kumar; Hill, Jonathan P.. Self-Assembly As A Key Player For Materials Nanoarchitectonics. Science And Technology Of Advanced Materials , [Sl], V. 20, No. 1, P. 51-95, 31 Jan. 2019. Informa Uk Limited. Http://Dx.Doi.Org/10.1080/14686996.2018.1553108 .
[3] Castilho, Amanda Ventura Synthesis And Characterization Of Nanocrystalline Alloys Based On Copper And Zirconium With High Capacity For Glassy State Formation. Dissertation (Master's Degree) – Ufrj/ Coppe/ Nanotechnology Engineering Program, Rio De Janeiro.2017.
[4] Faraz T, Et Al. 2017. Atomic Layer Deposition Of Wet-Etch Resistant Silicon Nitride Using Di(Sec-Butylamino)Silane And N2 Plasma On Planar And 3d Substrate Topographies. Acs Appl. Mater. Interfaces . 9(2):1858-1869.2017. Https://Doi.Org/10.1021/Acsami.6b12267. Accessed On: October 25, 2023.
[5] Ferreira, Hs, Rangel, Mc (2009). Nanotechnology: General Aspects And Potential Application In Catalysis. Química Nova, 32(7), 1860-1870. 2009. Available At: Doi: 10.1590/S0100-40422009000700033 . Accessed At: 05 Oct 2023

ABSTRACT: The nanoparticles being the most utilized invention of nanoscience and technology,which is used in many aspects of science and medicine. These remarkable utilization of particles is due to their diverse properties at nanolevel. The chemical and physical approach to formation of nanoparticles are toxic to surroundings also leading to less efficient usage of them in medical perspective. In this article green synthesis of cobalt ferrite nanoparticles is done by sol-gel auto combustion using Caralluma Tuberculata extract as reducing agent, iron.......

Keywords: Green synthesis, Metal oxide nanoparticles, Antimicrobial, Nanoparticles

[1]. Hussain, I., Singh, N. B., Singh, A., Singh, H., & Singh, S. C. (2016). Green synthesis of nanoparticles and its potential application. Biotechnology letters, 38, 545-560.
[2]. Thema, F. T., Manikandan, E., Dhlamini, M. S., & Maaza, M. J. M. L. (2015). Green synthesis of ZnO nanoparticles via Agathosma betulina natural extract. Materials Letters, 161, 124-127.
[3]. Korgaonkar, K., Agadi, N. P., & Seetharamappa, J. (2024). Porous Zinc Oxide and Functionalized Multiwalled Carbon Nanotubes Composite as Electrode Material for Enhanced Electrochemical Sensing of an Anticancer Drug, Dasatinib. Journal of The Electrochemical Society, 171(3), 037521.
[4]. Marimuthu, S., Rahuman, A. A., Rajakumar, G., Santhoshkumar, T., Kirthi, A. V., Jayaseelan, C., ... & Kamaraj, C. (2011). Evaluation of green synthesized silver nanoparticles against parasites. Parasitology research, 108, 1541-1549.
[5]. Bindhu, M. R., Umadevi, M., Esmail, G. A., Al-Dhabi, N. A., & Arasu, M. V. (2020). Green synthesis and characterization of silver nanoparticles from Moringa oleifera flower and assessment of antimicrobial and sensing properties. Journal of Photochemistry and Photobiology B: Biology, 205, 111836.3

ABSTRACT: This work aims to apply a didactic kit for hydrostatics, made using the 3D printer. The construction of this material meets the teacher's practical needs in the classroom, where he can make the pieces according to the experiments that he will work on with the class. For the application of the kit, experimental activities are developed, where the presentation of didactic proposals is discussed, focusing on the development of problem situations based on the Theory of Meaningful Learning (TAS) that seeks to relate the learning object with the knowledge that is present in the cognitive structure of the student. The presentation of some suggestions for experimental scripts is intended to help the teacher guide the class throughout the activity and achieve the objectives proposed in the experiment.

Keywords: Physics teaching. Didactic kit. Hydrostatic.

[1] Alves Filho, José De Pinho; Atividades Experimentais: Do Método À Prática Construtivista; Tese Apresentada Ao Programa De Pós-Graduação Em Educação Da Universidade Federal De Santa Catarina, Florianópolis - Sc, 2000;
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ABSTRACT: A biggest challenge for today's astrophysicist is to solve the mystery of primordial evolution of the universe. This is also known as belongs to Planck's era. In this stage space-time singularity and inflationary phase all occur when universe was just of the size 10-5m. All this evolution occurs in a tiny fraction of a second. This description is made by joining the cosmological principle of isotropy and homogeneity, the Hubble law, and the Einstein's field equations of General Relativity in the Big Bang Theory or Standard Cosmological Model (SCM). By solving equation proposed by Albert Einstein in the general relativity the cosmological singularity proposed by Alexander Friedmann explain well the Big Bang model of origin of our universe........

Keywords: Big bang, Big crunch, Friedmann Equations.

[1] A.Einstein,Approximative Integration Of The Field Equations Of Gravitation, Prussian Academy Of Sciences, June 1916. Sitzungsber Preuss. Akad. Wiss. Berlin (Math. Phys.) (1916), 688-696. Https://Inspirehep.Net/Record/42612.
[2] H. A. Lorentz, A. Einstein, H. Minkowski, H. Weyl, The Principle Of Relativity. (Includes English Translation Of Einstein's General Relativity Paper Which Appeared In Annalen Der Physik 49,1916.).
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[4] A. Friedmann: Über Die Krümmung Des Raumes, Zeitschrift Für Physik (Translation: On The Curvature Of Space, Journal Of Physics) 10(1922), 377–386.
[5] M. Pettini: Lectures On Introduction To Cosmology Pp 1-4 Available On Https: //Www.Cam.Ac.Uk.

ABSTRACT: Quantum well lasers (QWLs) have emerged as a transformative advancement in semiconductor laser technology, leveraging quantum confinement effects to deliver superior performance in terms of efficiency, modulation speed, and wavelength tunability. By confining charge carriers in a thin quantum well, these lasers achieve reduced threshold currents and enhanced optical gain, making them indispensable in modern photonic applications........

Keywords: Quantum well laser, photonics, semiconductor lasers, quantum confinement, laser efficiency, next-generation applications

[1] Soin, I. P., Et Al., "Optimizing Quantum Well Structures For Improved Laser Performance," Applied Physics Letters, Vol. 121, No. 5, 2022.
[2] Zhang, H., Liu, Y., & Tan, Z., "Integration Of Two-Dimensional Materials In Quantum Well Lasers," Scientific Reports, Vol. 13, 2023.
[3] Liu, F., Zhang, W., & Zhou, H., "Thermal Management Technologies For Quantum Well Lasers," IEEE Photonics Journal, Vol. 13, No. 2, Pp. 123-130, 2021.
[4] Kumar, A., Sharma, P., & Zhang, Y., "Enhancing Efficiency Of Quantum Well Lasers Through Nonlinear Optical Effects," Journal Of Optics, Vol. 25, 2023.
[5] Wang, R., & Chen, W., "The Role Of Quantum Well Lasers In Future Optical Communications," Optics Express, Vol. 30, No. 4, Pp. 5042-5051, 2022.

ABSTRACT: There are quite a lot of cube sat subsystems that can be procured on the African continent to develop Cube Satellite (CubeSats). However these are not noticed by many relevant professionals that can design and integrate them to functional CubeSats in Nigeria. This is despite the ever increasing role this class of satellite is playing in educational, scientific research and commercial satellite weather, earth observation and communication services. The paper also identified basic physics principles and mathematical models for the prediction of the attitude of a spacecraft and the units that makes up the CubeSat. The thrust of this paper is to explore and bring to fore these vital subsystems, their uses and configuration for CubeSat project with a view of encouraging increased research activities in CubeSat development, with some information on their power requirements, typical cost, sources, their interrelationship and combination to perform the task of a weather monitoring CubeSat.

Keywords: Survey, Local, Cubesat, Available, Nigeria, Subsystem.

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[2] Afolabi O O (2024)The Development Of Attitude Determination And Control System (ADCS) For Weather Monitoring Cube Satellite An Unpublished Phd Thesis; Federal University Of Technology, Akure
[3] Markley, F. L. And Crassidis, J. L. (2014). Fundamentals Of Spacecraft Attitude Determination And Control. 4-88, 169-174
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ABSTRACT: Substituting elements in high-entropy alloys (HEAs) offers a unique avenue for tailoring their physical properties. This study investigates the effect of substituting Nb with Vanadium (V) in the HEAs (TaV)0.3(TiZrHf)0.7 and (TaV)0.1(TiZrHf)0.9. Using density functional theory (DFT) and density functional perturbation theory (DFPT), we examine the structural stability, electronic structure, and superconducting properties of these HEAs. The results show that replacing Nb with V reduces the density of states at the Fermi level (N(EF)), weakens electron-phonon coupling (λ), and lowers the superconducting transition temperature (TC). These findings highlight the critical role of Nb in enhancing the superconducting performance of HEAs..

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ABSTRACT: The energetic and ground state structures of the elemental metals combined with density functional theory and the local density approximation now able not only the computation of the cohesive energ y of the elemental metals but also the particular symmetry of the ground state lattice Previously it has been shown that a model based on the electron gas explains the trends in the cohesive energies of the elemental metals. In this paper we show that a si mple extension of this uniform electron gas model also explains the trends in the elastic constants of the simple and transition metals and binary alloys at different concentration.

Key Word: Cohesive Energy | Electron Gas Model | El astic Constants | Binary Alloys

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ABSTRACT: The irreversible process of 'wave packet collapse' in quantum measurement contradicts the reversible characteristics of the Schrödinger equation and the entire quantum mechanics. This contradiction is actually the origin of measurement problems in quantum mechanics. How to resolve this contradiction is related to the understanding of some philosophical concepts. The Copenhagen School embraces the reversible/irreversible contradictions in quantum measurement through the principle of complementarity. Both von Neumann's measurement.......

Key Word: quantum measurement, irreversibility, time arrow

[1] Haroche, Serge Et Al.(1996), 'Observing The Progressive Decoherence Of The 'Meterin' A Quantum Measurement', Physical Review Letters 77,Pp4887-4890.
[2] Mensky, Michael B. Quantum Measurements And Decoherence: Models And Phenomenology. Dordrecht/Boston/London: Kluwer Academic Publisher,2000,Pp.20-23
[3] Stephen Hawking, The Universe In A Nutshell, Published By Batham Press, 2001, Pp147-153.
[4] Edited By Stephen Hawking: 'The Dream That Stuff Is Made Of', Simplified Chinese Version Translated By Wang Wenhao, Hunan Science And Technology Press, 2020.
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