2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)最新文献

{"title":"Influence of the surface acoustic wave on the electron states of adsorbed semiconductor surface","authors":"M. Seneta, R. Peleshchak, S. Guba","doi":"10.1109/NAP.2017.8190159","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190159","url":null,"abstract":"The theory of electron states is developed on the adsorbed surface of semiconductor which is bounded by the rough surface. The surface roughness are formed by both quasi-Rayleigh acoustic wave and adsorbed atoms. Interaction between the adsorbed atoms and the field of surface acoustic wave deformation is described within the deformation potential limits.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"11 1","pages":"01PCSI24-1-01PCSI24-3"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75743190","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":"Antibacterial activity of the new copper nanoparticles and Cu NPs/chitosan solution","authors":"V. Holubnycha, M. Pogorielov, V. Korniienko, O. Kalinkevych, O. Ivashchenko, B. Peplińska, M. Jarek","doi":"10.1109/NAP.2017.8190323","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190323","url":null,"abstract":"Nanoproducts find wide-ranging applications, from medicine and pharmaceutics to electronic industry, optics and environmental protection. Metallic nanoparticles (NPs) with antibacterial properties represent a promising alternative approach to antibiotics. Copper nanoparticles display high biological activity, comparatively low cost, ecological safety and could be considered as promising multifunctional antibacterial agents. Preparation of new antimicrobial release systems based on Cu NP and biological polymers will contribute to create effective antimicrobial agent. The purpose of current research is to examine the antibacterial activity of the Cu NPs and Cu NPs/chitosan solution against methicillin-resistant Staphyloccus aureus MRSA and multidrug resistant E. coli clinical isolates. Cu NPs were synthesized via chemical reduction method using ginger (Zingiber officinale) and L-ascorbic acid. Chitosan (200 and 500 kDa)-NPs solution with different concentrations was prepared before experiment. X-ray diffraction (XRD) technique, scanning electron microscopy (SEM), SEM energy dispersive microanalysis (EDS), infrared (FTIR) and UV-Vis spectroscopies were used for NPs characterization. The antimicrobial activity of the Cu NPS and CuNP/chitosan solution was tested against 10 MRSA and 5 multidrug-resistant E. coli clinical strains. Physicochemical characterization of Cu NPs showed that they consist of copper core and copper (IV) oxide shell, and the surface of the NPs contained organic compounds originated from ginger and ascorbic acid that served as capping and reducing agents. Cu NPs were approximately 15–20 nm in size and exhibited an ability to self-organization into roundish structures 770±90 nm in size. Pure copper NPs, synthesized via chemical reduction method, affected multiresistant clinical strains of S. aureus and E. coli in concentration of 0.35 μg/ml and 0.7 μg/ml. NPs in 200 kDa chitosan solution effective against MRSA strains in concentration 0.17 μg/ml. But Cu NPs in 500 kDa chitosan solution have no antibacterial effect.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"1 1","pages":"04NB10-1-04NB10-4"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73011614","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 criteria of formation of InAs quantum dots in the presence of ultrasound","authors":"R. Peleshchak, O. Kuzyk, O. Dan’kiv","doi":"10.1109/NAP.2017.8190186","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190186","url":null,"abstract":"The non-linear diffusion-deformation theory of self-organization of nanoclusters of dot defects in semiconductor exposed to ultrasound treatment that considers the interaction of defects among themselves and with atoms of a matrix via the elastic field created by dot defects and an acoustic wave is developed. Within this theory the influence of ultrasound on the conditions of formation of spherical nanoclusters InAs and their radius is investigated, the formation criteria according to the deformation amplitude value, average defects concentration, and temperature are determined. The nanocluster size depending on average concentration of defects and amplitude of an acoustic wave is determined. It is established that ultrasonic treatment of the semiconductor GaAs in the process of formation of an ensemble of InAs nanoclusters leads to reduction of dispersion of their sizes. In the framework of this model, a possibility of the ultrasound-stimulated the size dispersion reduction of strained InAs/GaAs quantum dots doped with an isovalent impurity are analyzed.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"10 1","pages":"01NNPT06-1-01NNPT06-4"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72628356","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":"Nanostructured PVD film-coated alumina powders for thermal spraying technologies","authors":"I. Smirnov, V. Furman, A. Chornyi, N. A. Dolgov, A. Andreytsev","doi":"10.1109/NAP.2017.8190197","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190197","url":null,"abstract":"Technique and equipment of physical vapor deposition (PVD) thin films on ceramic powders for thermal spraying technologies are developed. Alumina powders coated metal thin films were used for plasma spraying. Deposition of two-layer films on the powder particles was carried out. The first layer was titanium and the second layer was aluminum or copper. The titanium as adhesively-active element capable of wet alumina is necessary for increase the adhesion strength vacuum films. Effect of PVD process conditions on the concentration of titanium, aluminum and copper ions in the metallic plasma flow was studied. Suggested are the relationships allowing determination of time, required to attain the preset temperature on the powder particle surface and to produce a metallic film of the required thickness.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"35 1","pages":"01FNC04-1-01FNC04-5"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73775019","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":"Microwave and ultrasound energy in the process of fly ash zeolite synthesis and its application for CO2 sorption","authors":"N. Czuma, K. Zarębska, P. Baran","doi":"10.1109/NAP.2017.8190267","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190267","url":null,"abstract":"Literature sources confirm the possibility of using microwave and ultrasonic energy in the zeolitic synthesis process which lead to a significant reduction in synthesis time. In addition, literature data show that it is possible to obtain a high degree of conversion of fly ash into zeolite material, which is advantageous as obtained materials might be applied in various processes. Microwave or ultrasonic energy can be also used as an additional process step to influence positively the outcome of the synthesis. In this study, an attempt was performed to synthesize zeolitic materials from fly ashes using microwave and ultrasonic energy as the only energy source. What's more the introduction of an additional ultrasonic energy process step was introduced to synthesis of fly ash zeolites by fusion method. The sample obtained by combining the fusion method with ultrasonic energy has been pre-tested for its carbon dioxide sorption capacity, indicating the applicability of materials thus obtained.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"68 1","pages":"03NNSA20-1-03NNSA20-5"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74010255","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":"Titanium surface nanostructuring by high-intensity ultrasound","authors":"N. Brezhneva, E. Skorb, S. Ulasevich","doi":"10.1109/NAP.2017.8190201","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190201","url":null,"abstract":"In this work perspectives of a high intensity ultrasound nanostructuring of a titanium surface have been shown. A possibility of a crystal size regulation is determined by the sonication duration and a nature of the electrolyte used. It is interesting to note that the change in crystal size of titanium is not monotonous. There are crystallite size oscillations depending on time of ultrasonic treatment caused by two simultaneous processes of atomic diffusion and melting process in the metal. Oxidative medium, besides having influence on titanium crystallite size, induces the formation of porous photoactive coatings based on the titanium dioxide. These porous coatings are highly rough and hydrophilic. Due to all above properties the metal-oxide structures are perspective as biomaterials for regulating cell adhesion and tissue growth in microdefects for a new generation of implants.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"C-29 1","pages":"01FNC09-1-01FNC09-6"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84439995","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":"Low-temperature properties of niobium oxynitride thin films prepared by non-balanced magnetron sputtering","authors":"S. O. Volkov, L. Odnodvorets","doi":"10.1109/NAP.2017.8190303","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190303","url":null,"abstract":"The results of phase composition, low temperature resistive measurements of nanodimensional superconductive niobium oxynitride are presented. The non-stoichiometry niobium oxynitride samples were fabricated by non-balanced magnetron sputtering. We obtained nanocrystalline thin film samples with narrow range of superconductive transition near 0, 3 K and transition temperature near (7, 6–8, 0)K.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"17 1","pages":"04NESP19-1-04NESP19-3"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81608595","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":"Magnetoresistance of film materials based on iron and noble metals","authors":"O. P. Tkach, L. Odnodvorets, M. O. Shumakova, I. Protsenko","doi":"10.1109/NAP.2017.8190396","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190396","url":null,"abstract":"Thin films based on iron and noble metals were evaporated on glass and sitall substrates by method of layered or simultaneous condensation. The magnetoresistivity properties of films based on Fe and Pd, Cu or Au were studied and shows what character of the dependence and the amplitude of magnetoresistance are determined by the phase formation processes, namely by the processes of structural ordering in the films based on Fe, Pd and granulation in the films based on Fe and Au. Despite the relatively small amount of giant magnetoresistance, these film materials can be used as sensitive elements of strain sensors and magnetic fields, since the phase composition of the granules has wide temperature and concentration stability intervals.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"21 1","pages":"02NTF40-1-02NTF40-4"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82411728","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":"Electrospinning of hybrid nanofibres elaborated with PEG core dendrimers and SPIONs synthesized in-situ: As multifunctional material for biomedical applications","authors":"V. Nirwan, A. Fahmi, M. Malkoch","doi":"10.1109/NAP.2017.8190279","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190279","url":null,"abstract":"Nanoparticles have emerged as a major attraction for preparation of novel materials with unique properties. They are usually a combination of extraordinary materials not found in nature. Expanding on that concept, nanofibres with additional components for biomedical applications were fabricated. Magnetic nanoparticles were chosen because they exhibit super paramagnetic properties for a wide range of applications in biomedicine. These particles were coated with polymer PEG 2000, which allowed bond formation of bond between the positive end of the dipole in SPIONs and the anion in PEG 2000, thus providing stability for use for a few weeks after preparation and further helping the interaction with PEG dendrimers and PEO. A colloid of SPIONs with PEG dendrimers and PEO was then used for electrospinning, providing multifunctional nanofibres of SPIONs characteristic rust-colour. The average diameter depended on the generation of dendrimers used in the colloid, ranging from 113 nm to 123 nm. The fibres were further characterized for thermal stability using TGA. The nanofibres proved a higher thermal stability, which is one of the many functionalities obtained by consisting of diverse, nanoparticle components. This can lead to numerous possibilities that could be fabricated by building on this methodology. For example, hybrid materials containing pioneering combinations can be developed.","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"48 1","pages":"03NNSA37-1-03NNSA37-5"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80289250","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":"Synthesis of copper acetate/polyvinyl alcohol nanofiber composite by electrospinning","authors":"M. Nasir, Juliandri, Rizky Ahsan Ansharullah","doi":"10.1109/NAP.2017.8190263","DOIUrl":"https://doi.org/10.1109/NAP.2017.8190263","url":null,"abstract":"Nanofiber composite plays important role in wide range application fields such as environmental, energy, sensor, chemical process, biotechnology and etc. In this research, we have successfully synthesized copper acetate/polyvinyl alcohol nanofiber composite by electrospinning process. Nanofiber composite was synthesized by following optimum conditions; applied voltage 20 kV, distance between nozzle to collector 12 cm, polymer solution flow rate 0,006 mL/h, polyvinyl alcohol concentration 20% w/v, copper acetate 0.5 % w/v, ethanol 30% w/v and water as solvent. Scanning electron microscopy analysis showed that copper acetate-polyvinyl alcohol nanofiber composite has smooth morphology. Nanofiber composite has average 385 nm in diameter. The diameter of nanofiber composite was larger than pristine polyvinyl alcohol nanofiber. Polyvinyl alcohol nanofiber has average 316 nm in diameter. Nanostructure of nanofiber composite was analyzed by FTIR spectroscopy and XRD. Vibration band peak at 3301 cm−1 and 3305 cm−1 are stretching of OH from polyvinyl alcohol and copper acetate-polyvinyl alcohol nanofiber composite, respectively. Vibration band peak of C-O stretching were identified at 1254 cm−1 and 1247 cm−1 for polyvinyl alcohol and copper acetate/polyvinyl alcohol nanofiber composite, respectively. Presence of copper acetate in nanofiber did not give significant change in structure of nanofiber. XRD analysis showed that strong intensity of diffraction peak at 2θ at 19 was attributed to crystalline region of polyvinyl alcohol. It is difficult to observed small content of copper acetate in nanofiber composite by XRD analysis. Small content of copper in nanofiber composite was detected by energy X-ray dispersive spectroscopy analysis (EDS).","PeriodicalId":6516,"journal":{"name":"2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP)","volume":"69 1","pages":"03NNSA15-1-03NNSA15-4"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80349310","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}