Soft Nanoscience Letters最新文献

Nanotechnology, Nanoparticles and Nanoscience: A New Approach in Chemistry and Life Sciences 纳米技术、纳米粒子和纳米科学:化学和生命科学的新途径

Soft Nanoscience Letters Pub Date : 2020-04-30 DOI: 10.4236/snl.2020.102002

D. Dan

引用次数: 6

Molecular Dynamics Study on Transmission Mechanism of Torsional Deformation in Cellulose Nanofibers with Hierarchical Structure 层次结构纤维素纳米纤维扭转变形传递机理的分子动力学研究

Soft Nanoscience Letters Pub Date : 2019-10-24 DOI: 10.4236/snl.2019.94004

Kentaro Takada, K. Saitoh, Tomohiro Sato, M. Takuma, Y. Takahashi

{"title":"Molecular Dynamics Study on Transmission Mechanism of Torsional Deformation in Cellulose Nanofibers with Hierarchical Structure","authors":"Kentaro Takada, K. Saitoh, Tomohiro Sato, M. Takuma, Y. Takahashi","doi":"10.4236/snl.2019.94004","DOIUrl":"https://doi.org/10.4236/snl.2019.94004","url":null,"abstract":"Cellulose nanofiber (CNF) is a fibrous and nano-sized substance produced by decomposition of bulk-type cellulose which is a main component of plants. It has high strength comparable to steel, and it shows low environmental load during a cycle of production and disposal. Besides it has many excellent properties and functions such as high rigidity, light-weight, flexibility and shape memory effect, so it is expected as a next-generation new material. Usually it is composed of many cellulose micro fibrils (CMFs) in which molecular chains of cellulose are aggregated in a crystal structure, the knowledge of mechanical properties for each CMF unit is important. Since actual fibrils are complicatedly intertwined, it is also crucial to elucidate the transmission mechanism of force and deformation not only in one fibril but also in between fibrils. How the dynamic and hierarchical structure composed of CMFs responds to bending or torsion is an interesting issue. However, little is known on torsional characteristics (shear modulus, torsional rigidity, etc.) concerning CMF. In general, in a wire-like structure, it is difficult to enhance torsional rigidity and strength, compared with tensile ones. Therefore, in this study, we try to build a hierarchical model of CNF by multiplying CMF fibers and to conduct molecular dynamics simulation for torsional deformation, by using hybrid model between all-atom and united-atoms model. First, shear modulus was estimated for one CMF fibril and it showed a value close to the experimental values. Also, we assume a state in which two CMFs are ideally arranged in parallel, and create a hierarchical structure. We evaluate the dependence on the temperature for the bond strength and toughness in the hierarchical structures. Furthermore, we mentioned the transmission mechanism between components of a hierarchical structure.","PeriodicalId":224984,"journal":{"name":"Soft Nanoscience Letters","volume":"43 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114040354","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}

引用次数: 0

Photoluminescence Emission Control of Porous Silicon 多孔硅的光致发光控制

Soft Nanoscience Letters Pub Date : 2019-07-30 DOI: 10.4236/snl.2019.93003

M. Nabil

引用次数: 1

Study on Enhanced Antibacterial and Cytotoxicity of Pure and Cadmium Doped Cerium Oxide against Gram-Positive and Gram-Negative Bacteria 纯氧化铈和镉掺杂氧化铈对革兰氏阳性和革兰氏阴性菌的增强抑菌和细胞毒性研究

Soft Nanoscience Letters Pub Date : 2019-01-31 DOI: 10.4236/SNL.2019.91001

K. Govindarasu, K. Gnanasekaran, S. Balaraman, Baskaran Iruson, Senthilnathan Krishnamoorthy, Babu Padmaraj, E. Manikandan, S. Dhananjayan

{"title":"Study on Enhanced Antibacterial and Cytotoxicity of Pure and Cadmium Doped Cerium Oxide against Gram-Positive and Gram-Negative Bacteria","authors":"K. Govindarasu, K. Gnanasekaran, S. Balaraman, Baskaran Iruson, Senthilnathan Krishnamoorthy, Babu Padmaraj, E. Manikandan, S. Dhananjayan","doi":"10.4236/SNL.2019.91001","DOIUrl":"https://doi.org/10.4236/SNL.2019.91001","url":null,"abstract":"Pure and Cadmium (Cd) doped Cerium oxide nanoparticles (CeNPs) have been synthesised by the simple chemical co-precipitation technique. Cadmium ions of concentrations 1, 3 and 5 mol% were doped to investigate their influence on the structural and optical properties of CeO2. The synthesised samples have been subjected to X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis and high-resolution transmission electron microscopy (HRTEM). The XRD and Raman patterns have witnessed the cubic structure of the cerium oxide nanoparticles. The average particle size of CeO2 was found to be around 10 nm. SEM image has also ascertained that the grain size of pure CeO2 appeared is bigger than that of the Cd-doped, which intern indicates the grain growth upon doping. Besides, the antibacterial activity of the cadmium doped cerium oxide nanoparticles against some human pathogens revealed that they have exhibited the maximum zone of inhibition against gram-positive bacteria than the gram-negative species. Further, the cytotoxic effect of Cd-doped CeO2 sample is examined in cultured (MCF-7, A549 and Hep-2) cell.","PeriodicalId":224984,"journal":{"name":"Soft Nanoscience Letters","volume":"11 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124783001","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}

引用次数: 4

Mechanical Properties of Injection Molded Poly(lactic) Acid—Luffa Fiber Composites 注塑成型聚(乳酸)酸-丝瓜纤维复合材料的力学性能

Soft Nanoscience Letters Pub Date : 2015-10-20 DOI: 10.4236/SNL.2015.54008

C. Parida, S. K. Dash, P. Chaterjee

引用次数: 16

Simulation Study of Nanoscale FDSOI MOSFET Characteristics 纳米FDSOI MOSFET特性的仿真研究

Soft Nanoscience Letters Pub Date : 1900-01-01 DOI: 10.4236/snl.2023.133002

Towhid A. Chowdhury

引用次数: 0

Effect on Optical and Antibacterial Activity of SnO₂ and CuO Blended SnO₂ Nanoparticles SnO2和CuO共混SnO2纳米粒子光学和抗菌活性的影响

Soft Nanoscience Letters Pub Date : 1900-01-01 DOI: 10.4236/snl.2023.132001

Suresh Gopal, Baskaran Iruson, S. Balaraman, Senthilnathan Krishnmoorthy, M. Elayaperumal

引用次数: 0