Editors-in-Chief
Prof. Yongliang Ma
Chinese Academy of Sciences, China
Published
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Open AccessArticles
by Thanh Tung Nguyen, Thanh Xuan
2024,2(1);
338 Views
Abstract
In this project, we investigated and investigated the optimal sites in the chemisorption of Neodymium (Nd) on armchair silicene nanoribbons (ASiNRs) to learn about the geometrical and electronic properties of the structures by applying these properties with first principle math. The survey has three steps. The first was to change the top, valley, bridge, and hollow positions to find optimazed positionThe results show that the Bridge position has the lowest absorbed energy value of -2.6eV, has the most stable structure, with the strongest magnetic moment of 4.68 μB, and a buckl degree of 0.69 Å; The Si-Si-Si bond angle at this time is 115053’ almost like the pristine case. The second was to change the Si-Si bondlength of ASiNRs the same purpose. Finally, we survey the distance from Nd atom to pristine adsorbent surface was decreased. The calculation results show that the valley position is the most ideal location, corresponding to the bond length of 2.26 Å and the optimal height of 2.11 Å resulting in a single material adsorption system for the new materials, different from other positions with bandgap changed. This result shows that the absorption method between metals and pristine semiconductor ASiNRs has opened up a very good direction, contributing to enriching the source of materials applied to the field of manufacturing electronic, optoelectronic, and spintronic components in the future.
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Open AccessArticles
by Abhishek Patel, Ashlesha Kawale, Neeru Sharma, Nishant Shekhar, Subhash Banerjee, Arti Srivastava
2024,2(1);
372 Views
Abstract
This research work focused on studying the fabrication of biopolymer carboxymethyl cellulose (CMC) wrapped ZnO nano-composite materials (ZnO-CMC NCs) and its applications in the photocatalytic degradation of methylene blue (MB) using under sunlight Irradiation. ZnO-CMC NCs were synthesized by using zinc acetate dihydrate as a precursor under alkaline conditions followed by the addition of capping agent CMC followed by calcination at various temperatures. The materials were characterized by FTIR, UV-Vis and powder XRD studies. The presence of CMC as a capping agent not only facilitated the nucleation and growth of (nanoparticles) NPs but also it provided stability and functionalization to the NPs. The varying calcination temperature played a significant role in influencing the size of NCs during the synthesis process. The crystallite size of ZnO-CMC NCs were found to be 19.5959 nm, 21.2518 nm, 23.5000 nm, 27.5930 nm, 34.9789 nm at 250°C, 350°C, 450°C, 550°C, and 650°C calcinations temperature respectively. It was observed that size increases slightly by increasing the calcination temperature from 250°C to 450°C. However, further increase in calcination temperature increases crystallite size significantly. The degradation of MB dye has been studies under UV-Vis spectrophotometer and it was observed that synthesized ZnO-CMC NCs were very efficient in the photocatalytic degradation of MB under natural sunlight. We believe that, these synthesized CMC-wrapped ZnO NCs will find wide range of photocatalytic applications for the treatment of organic pollutants in various dyes used in the chemical industries.
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Open AccessArticles
by P. R. Sekhar Reddy
2024,2(1);
668 Views
Abstract
In the pursuit of advancing neuromorphic computing, 2D material-based memtransistors have emerged as a promising avenue. These memtransistors offer a unique blend of attributes, including tiny dimensions, compactness, and low-power operation, making them ideal candidates to mimic human brain functionality for artificial intelligence applications. This review focuses on various 2D materials such as MoS 2 , WSe 2 , h-BN, and In 2 Se 3 , and their suitability for bio-synapse applications, highlighting their advantages over other synaptic devices. Additionally, the review suggests the development of multi-terminal memtransistor-based synaptic devices with innovative operational principles for in-memory computing applications. Finally, concludes by discussing both the current state of development and the prospects and challenges that lie ahead, aiming to inspire further progress in information storage and neuromorphic computing.
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Open AccessArticles
by Bhupendra Patankar, Ghizal F. Ansari, Sukhdev Bairagi
2024,2(1);
291 Views
Abstract
The bismuth doped borate (Bi 2 O 3 –B 2 O 3 ) glasses were made using the melt quench process. The physico-optical characteristics, including their molar and density of the specimens were examined. The density readings were obtained using the Archimedes principle. The X-Ray differ actogram was used to verify that the specimens are amorphous. Using Tauc's approach, the optical characteristics of the specimens, including their direct and indirect forbidden energy gaps, were computed. The Urbach energy and steepness of the glass system were calculated to determine its disorderliness. The effect of Bi on physical and optical properties as density, poleron radius, forbidden energy gap, refractive index etc, were observed. The metallization criteria were used to examine the materials' non-metallic character.
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Open AccessArticles
by Tianyi Dong, Ming Qi, Shuxia Ji, Kailin Liu, Peng Shi, Chong Geng
2024,2(1);
265 Views
Abstract
MXene nanoflakes, a new type of transition metal carbides, nitrides, and carbonitrides (named as MXene) have emerged as biocompatible transition metal structures, which illustrate desirable performance for various applications due to their unique physicochemical, and compositional virtues. MXenes are currently expanding their application from optical, chemical, electronic, and mechanical fields towards biomedical areas. In terms of biomedical applications, the biological toxicity of MXenes materials in different forms must be considered inevitably. In this paper, Ti 3 C 2 -MXene nanoflakes with different sizes have been prepared by means of wet etching method combined with powerful ultrasonication for exploring the effect in human breast carcinoma cells (MDA-MB-231 Cells) and human thyroid carcinoma cells (GLAG-66 Cells). Clinically representative MDA-MB-231 Cells and GLAG-66 Cells are selected as experimental subjects and their biotoxicities are characterized when exposed to Ti 3 C 2 -MXene nanoflakes with different sizes and concentrations. The results show that Ti 3 C 2 -MXene nanoflakes with sizes below 200 nm is almost non-toxic to MDA-MB-231 Cells and GLAG-66 Cells at low concentrations, and enhance their bioactivity and proliferation. When the nanoflake size is above 200 nm, Ti 3 C 2 -MXene has a significant inhibitory effect on the proliferation of the cells. This phenomenon may be due to the different roles of Ti 3 C 2 -MXene materials at different scales in cell proliferation as well as in complex physiological processes. This result is of great significance for material screening and design before biological experiments using Ti 3 C 2 -MXene.
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