International journal of nanotechnology and nanomedicine最新文献

{"title":"New mathematical method for detection of the metal-catalyzer traces on the modified electrodes surface","authors":"","doi":"10.33140/ijnn.05.02.03","DOIUrl":"https://doi.org/10.33140/ijnn.05.02.03","url":null,"abstract":"New mathematical approach for characterization of the measured voltammograms (VAGs) obtained for electrodes with catalytic response and modified by nanoparticles of gold (Au) and palladium (Pd) was applied. The cases with tracing concentrations of the electrodeposited catalyzer were considered, when the corresponding VAGs for the solutes containing catalyzer and background coincide practically with each other. Using the catalyzer electrode response of dopamine (DA) and new mathematical approach for description of the remnant current fluctuations, it was shown that becomes possible to extract a useful information from the measured VAGs because of increasing the limits of the signal/noise ratio. The fluctuations of the remnant currents are transformed into a specific “confidence tube” that is used for detection of the VAGs perturbations evoked by the presence of the analyte traces. Using the proposed mathematical method, it becomes possible to achieve the low boundary of the DA detection up to 10-8 M.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74641620","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":"Nanobiosensor Technology","authors":"","doi":"10.33140/ijnn.05.02.01","DOIUrl":"https://doi.org/10.33140/ijnn.05.02.01","url":null,"abstract":"Nanobiosensor explore centers around creating innovations that can make huge commitments in the zones of human and infection marker location, promising environmental remediation, nano-and biomaterials portrayal, and biocatalyst advancement. These innovations appear as nanometrically designed with improved functionality and characteristics to be employed in a diverse array of applications.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74271068","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":"Development of Nanostructured-based Composites as Advanced Thermal Interface Materials","authors":"","doi":"10.33140/ijnn.05.01.01","DOIUrl":"https://doi.org/10.33140/ijnn.05.01.01","url":null,"abstract":"Thermal management is one of the most critical issues in electronics due to increasing power densities. This problem is getting even worse for small and sophisticated devices due to air gaps present between the heat source and heat sink. Thermal interface materials (TIM) are used to reduce the air gaps and significantly increase the heat transfer capability of the system. A high-thermal-performance, cost-effective and reliable TIM would be needed to dissipate the generated heat, which could enable significant reductions in weight, volume and cost of the thermal management system. In this study a number of different nanostructured materials are reviewed for potential use as a filler material in our effort to develop advanced TIM composite. Some of the candidate filler materials considered is Carbon Nanotubes, Graphene and Few Layer Graphene (FLG), Boron Nitride Nanotubes (BNNT) and Boron Nitride Nanomesh (BNNM) and Boron Arsenide (BAs). Objective is to identify composition of boron arsenide as filler in polymer-nanostructured material composite TIM for high heat flux applications. In order to design boron-arsenide-based TIM composite with enhanced effective thermal conductivity, a number of metallic and nonmetallic base-filler material composites are considered with varying filler fractions. Empirical mixture models based on effective medium theories (EMT) are evaluated for estimating effective conductivity of the two-component boron arsenide-filler composite TIM structure.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89587188","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":"Applying Segmentation Pattern Analysis to Investigate Postprandial Plasma Glucose Characteristics and Behaviors of the Carbs/Sugar Intake Amounts In Different Nations (GH Method: Math-Physical Medicine)","authors":"","doi":"10.33140/ijnn.05.01.03","DOIUrl":"https://doi.org/10.33140/ijnn.05.01.03","url":null,"abstract":"In this paper, the author presents the results of his national segmentation pattern analysis of the sensor PPG data based on both high-carb and low-carb intake amounts. It also verified his earlier findings on the communication model between the brain and internal organs such as the stomach, liver, and pancreas.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84592836","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":"Product Innovations from Electrospun Nanofibers","authors":"","doi":"10.33140/ijnn.05.01.04","DOIUrl":"https://doi.org/10.33140/ijnn.05.01.04","url":null,"abstract":"The article reviews some significant research trends in the development of innovative products from electrospun nanofibers. In one area of investigation, high surface area poly (lactic acid) (PLA)/tea polyphenols (TPs) porous composite nanofiber membranes (CNFMs) were prepared successfully by electrospinning and applied to adsorption of silver ions. In another area of research electrospun PVA/SiO2 separator membranes were presented and their electrochemical performance was evaluated for use in Li-ion batteries. Polyvinyl alcohol (PVA) was used to prepare nanofiber based membranes due to advantages such as low cost, water solubility, and biodegradability. In yet another work, a mixture of formic acid (FA), acetic acid (AA), and acetone was used, for the first time, as a ternary solvent system to dissolve poly(E-caprolactone) (PCL). In addition, as a biomaterial reinforcement, various amounts of cellulose microfibrils (CMF) (1.5, 3, and 5wt. %), extracted from rice husk, were added to PCL solution, and subsequently the prepared suspensions were individually electrospun.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76219410","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":"The Magnetic and Structural Properties of the Alloys of Iron Produced by Mechanical Alloying","authors":"","doi":"10.33140/ijnn.05.01.02","DOIUrl":"https://doi.org/10.33140/ijnn.05.01.02","url":null,"abstract":"In this study, nanostructured powders, (Fe65Co35) 100-x Crx with (x=0, 10), were synthesized by a high-energy mechanical grinding process, usually used to obtain soft magnetic systems. For this purpose, the metal elements Fe, Co and Cr, of respective purities 99.9, 99.8 and 99.5% and of average size less than one hundred microns, were milled at different times, ranging from 1 hour to 36 hours. In a second step, the nanopowders obtained were characterized by several techniques, namely X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) techniques. The analysis of the results obtained showed the complete formation of the (Fe65Co35) and (Fe65Co35) 90Cr10 phases from 12 hours of grinding. For (Fe65Co35), the remnant field Br and the saturation magnetization Ms have similar evolutions namely, a decrease between 8h and 24h, followed by an increase until the end of the grinding. In addition, the high values of Br and Hc suggest that this system is magnetically hard. The presence of chrome in the ternary (Fe65Co35) 90Cr10 amplifies the maximum value of Hc, while maintaining a similar behavior.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89572757","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":"Crystallization, mechanical and electrochemical behavior of Al-Ce-TM (TM = Fe,\u0000Co, Ni and Cu) amorphous alloys","authors":"","doi":"10.33140/ijnn.04.02.06","DOIUrl":"https://doi.org/10.33140/ijnn.04.02.06","url":null,"abstract":"Al86Ce10TM4\u0000 amorphous alloys (TM=Fe, Co, Ni and Cu) were fabricated using melt-spin fast-quenching method.\u0000The crystallization, mechanical and electrochemical behavior of the as-spun and the post-annealed alloys were\u0000investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), micro-indentation and electrochemical\u0000techniques. It was found the completely amorphous Al86Ce10TM4\u0000 alloys (TM=Fe, Co, Ni and Cu) go through two\u0000crystallization processes, where the first exothermal peak represents nucleation of nano-crystalline particles and the\u0000second exothermal peak signifies growth of the nano-crystalline precipitates. Both the nucleation and growth processes\u0000rely on diffusion-controlled mechanism. The first onset crystallization temperature Tx1 associated with activation energy\u0000E1\u0000 and frequency factor Ko1 can be used to evaluate the thermal stability of the amorphous alloys while the second\u0000onset crystallization temperature Tx2 associated with activation energy E2\u0000 and frequency factor Ko2 can be taken to\u0000judge the thermal stability of ideal amorphous-nanocrystalline mixed structure in sustaining optimized mechanical\u0000and electrochemical properties. The as-spun and post-annealed alloys exhibit higher mechanical hardness (860~1180\u0000MPa), corrosion resistance (10-8A/cm2\u0000) and high temperature endurance (284, 300 and 420°C for Al86Ce10Co4\u0000,\u0000Al86Ce10Ni4\u0000 andAl86Ce10Fe4\u0000, respectively) compared to hardness 500~600 MPa, corrosion resistance 10-7A/cm2\u0000 and\u0000high temperature durability 200°C of traditional Al crystalline alloys, manifesting the value on scientific studies and\u0000engineering applications of the Al86Ce10TM4\u0000 amorphous alloys.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75419187","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":"Reactor Pressure Vessel Steel Smart Behavior as Cause of Instability in Kinetics of\u0000Radiation Embrittlement","authors":"","doi":"10.33140/ijnn.04.02.04","DOIUrl":"https://doi.org/10.33140/ijnn.04.02.04","url":null,"abstract":"Fast neutron intensity influence on reactor materials radiation damage is a critically important question in the\u0000problem of the correct use of the accelerated irradiation tests data for substantiation of the materials workability in\u0000real irradiation conditions that is low neutron intensity. Investigations of the fast neutron intensity (flux) influence on\u0000radiation damage and experimental data scattering reveal the existence of non-monotonous sections in kinetics of\u0000the reactor pressure vessels (RPV) steel damage. Discovery of the oscillations as indicator of the self-organization\u0000processes presence give reasons for new ways searching on reactor pressure vessel (RPV) steel radiation stability\u0000increasing and attempt of the self-restoring metal elaboration. Revealing of the wavelike process in the form of non\u0000monotonous parts of the kinetics of radiation embrittlement testifies that periodic transformation of the structure\u0000take place. This fact actualizes the problem of more precise definition of the RPV materials radiation embrittlement\u0000mechanisms and gives reasons for search of the ways to manage the radiation stability (nanostructuring and so on to\u0000stimulate the radiation defects annihilation), development of the means for creating of more stableness self recovering\u0000smart materials.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83415509","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":"Room Temperature Synthesis of Monodisperse ZnO Nanoparticles Using Ultrasonically\u0000Atomized Precursor Mist in Simple Chemical Route","authors":"","doi":"10.33140/ijnn.04.02.02","DOIUrl":"https://doi.org/10.33140/ijnn.04.02.02","url":null,"abstract":"Monodisperse zinc oxide (ZnO) nanoparticles were synthesized using ultrasonically atomized precursor mist in simple\u0000chemical route at low temperature. Analytical grade sodium hydroxide and zinc chloride were dissolved in 100 ml\u0000methanol. Zinc chloride precursor solution was converted into very fine mist (atomized) using a nozzle (Sono-Tek\u0000Corporation, U.S.A.) operated at ultrasonic frequency of 120 KHz. Fine mist droplets were added slowly (50ml/\u0000hour) into sodium hydroxide solution in 2 hours. The NaOH solution in beaker turned slowly into white product due\u0000to addition of zinc chloride. The white product was kept in constant temperature bath at 90°C for 3 hours. The white\u0000product was washed five times using double distill water and dried in oven for 2 hours. Different powder samples were\u0000synthesized using same procedure by changing the molarity of sodium hydroxide keeping the molarity of zinc chloride\u0000and other preparative conditions same. The structural, microstructural, thermal and optical properties of fine powders\u0000were analyzed using X Ray Diffractometer, Scanning Electron Microscopy, Simultaneous Thermal Analyzer, UV-Vis\u0000Spectroscopy and Photoluminescence Spectroscopy. Fine ZnO nanorods, elongated and spherical nanoparticles were\u0000observed due to change in molarity of NaOH. The results are discussed and interpreted.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77374331","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":"Nano-Biotechnology: Developing Nano-silver coated cotton fabrics by means of biosynthesis of silver nanoparticles using Aspergillus terrues strain (MTCC9618) against\u0000staphylococcus aureus","authors":"","doi":"10.33140/ijnn.04.02.01","DOIUrl":"https://doi.org/10.33140/ijnn.04.02.01","url":null,"abstract":"Biosynthesis of silver nanoparticles, especially fungal mediated method is given attention in the development of new drugs for\u0000resistance pathogens, molecular diagnosis, drug delivery therapy and in catalytic sensor due to its cost effective, none toxicity and\u0000eco-friendly. The present study focused on the fungal mediated biosynthesis of silver nanoparticles using Aspergillus terrues strain\u0000(MTCC 9618). The synthesized nanoparticles was monitored by spectrophotometer SEM, XRD and its band gap was determined\u0000by Tuac equation. After while the fungal crude cells was exposed to 5mM silver nitrate the reduction reaction was recorded\u0000according to red shift colorchange. Based on ultra violet spectrophotometeran absorbance was recorded in a distinct pick around\u0000430nm - 450nm and also the band gab was determined using Tuac equationsuch that 2.08eV, 2.02eV, 2.0eV and 1.96eV at about\u000010min, 30min, 12h and 24h respectively. The AgNPs coated cotton fabrics was developed through direct exposed to extracellular\u0000metabolites and 100ppm colloidal solution of AgNPs. The antimicrobial efficacy of the synthesized AgNPs coted cotton fabrics against\u0000gram positive Hospital staphylococcus aureus pathogenstrains was conducted by disk diffusion assay. In which the antimicrobial\u0000efficacy of coated cotton-Ag against human pathogens was proofed how the staphylococcus aureus had susceptible too and (16mm)\u0000zone of inhibition was recorded. Based on disk diffusion assay at 10ug/mL minimum inhibition concentration (MIC)10.5 mm\u0000inhibition zone was noted consequently, this study accomplished that Aspergillus terreus strain mediated biosynthesis of silver\u0000nanoparticles is cost effective, time saving, eco-friendly and small spherical (<10nm) had produced against to Physio-chemical\u0000means. The bio-synthesized silver nanoparticles cotton fabrics publicized that a higher efficacy of antimicrobial activity against\u0000staphylococcus aureus and the result was considerable suggested in widely range used in textile and pharmaceutical industries\u0000to enrich durability, strength, quality of products against a clinical pathogens application as well bad odor and spoilage of dusts\u0000from fabrics.","PeriodicalId":91888,"journal":{"name":"International journal of nanotechnology and nanomedicine","volume":"172 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86801717","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}