Sangeeta Semwal; Sarab P. Singh; Vasant D. Vankar
Abstract
In present work, hybrid structures of Si Nanocrystals (Si-ncs) and Carbon Nanotubes (CNTs) with bead-like architecture have been synthesized by exposing pristine CNTs to silane (SiH4) at 200 ºC. The exposed CNTs were annealed in Ar ambient at 500ºC in a catalytic chemical vapor deposition chamber. ...
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In present work, hybrid structures of Si Nanocrystals (Si-ncs) and Carbon Nanotubes (CNTs) with bead-like architecture have been synthesized by exposing pristine CNTs to silane (SiH4) at 200 ºC. The exposed CNTs were annealed in Ar ambient at 500ºC in a catalytic chemical vapor deposition chamber. High-resolution transmission electron microscopy (HRTEM) elucidated that the bead-like architecture has well-defined crystalline nature. X-ray photoelectron spectroscopy (XPS) was used to study the nature of chemical bonding and structural functionalization/defects caused by silane exposure and annealing on the nanotube surface. XPS results indicated in-diffusion of Si in the CNT cavity as well reduction in oxygen content on the top surface of the CNTs. X-ray diffractometry was used to further confirm the formation of the crystalline hybrid structures. From the present work it is inferred that a controlled synthesis of hybrid structures (CNT-Si ncs) with bead-like architecture can be achieved by a simple CVD method for various applications
Stanislav V. Ordin
Abstract
Now that the panic over the coronavirus has plagued the entire world community, it has become clear that the progress of our civilization is in question - it either zigzags or we slide back into the caves.A societal approach to a pandemic should be dealt with dynamic and complex issues via collaborative ...
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Now that the panic over the coronavirus has plagued the entire world community, it has become clear that the progress of our civilization is in question - it either zigzags or we slide back into the caves.A societal approach to a pandemic should be dealt with dynamic and complex issues via collaborative approaches. In order to develop problem-solving techniques, basic steps should be adopted through solution-oriented processes and methods.
Nidhi Chauhan; Sandra Afflerbach
Abstract
Advanced Materials Congress, AMC, is the flagship congress assembly organized by the International Association of Advanced Materials. This is one of the most prominent congress assemblies in the sphere of materials science and technology, started by IAAM in the year 2011 to provide a prestigious platform ...
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Advanced Materials Congress, AMC, is the flagship congress assembly organized by the International Association of Advanced Materials. This is one of the most prominent congress assemblies in the sphere of materials science and technology, started by IAAM in the year 2011 to provide a prestigious platform to the active and upcoming materials science researchers, scientists, professionals, and business giants where they could come together and discuss the latest trends and developments in the scientific world. Ever since then, AMC has stimulated intensive discussions and facilitated the advancement of materials to global excellence. Going through the year 2020, IAAM had already organized as many as 32 Advanced Materials Congresses, which were attended by more than 15,000 delegates from more than 100 countries with the participation of around 2500 leading organization from both academia and industry. Around 1000 thematic sessions on various topics of advanced materials have been organized during the past Advanced Materials congresses and their symposia. Stepping into this new decade, IAAM plans on taking the prestigious platform of AMC to all continents of the world in 2020. Moreover, the organization intends to focus these international assemblies on all different kinds of subject areas of advanced
Anshuman Mishra
Abstract
Developing a large pool of research and technology data perhaps the most important source of knowledge, which can be shared among professionals to facilitate new technology development. High ranges of environmental friendly materials that have been procured from various resources have ignited significant ...
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Developing a large pool of research and technology data perhaps the most important source of knowledge, which can be shared among professionals to facilitate new technology development. High ranges of environmental friendly materials that have been procured from various resources have ignited significant interest due to their impressive properties of sustainability.
Jyotsna Meshram
Abstract
Post Graduate Teaching Departments of Physics, Chemistry, Mathematics, Statistics, Computer Sciences, and Department of Chemical Engg. LIT, of Rashtrasant Tukadoji Maharaj Nagpur University, have jointly organized an International Conference on Advances in Physical, Chemical & Mathematical Sciences ...
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Post Graduate Teaching Departments of Physics, Chemistry, Mathematics, Statistics, Computer Sciences, and Department of Chemical Engg. LIT, of Rashtrasant Tukadoji Maharaj Nagpur University, have jointly organized an International Conference on Advances in Physical, Chemical & Mathematical Sciences (ICAPCM-2020) during February 13th - 16th, 2020. During this conference, more than one thousand registrations were registered from all across the globe. Participants from almost all the parts have gathered for this multidisciplinary mega event.
Jyotsna Meshram
Abstract
During the past few months, with somewhere to coronavirus everywhere, the invisible virus has taught us lesson. Post COVID-19 pandemic has disrupted the entire scenario of higher education and the educational Institutes in India has undergone massive reformed transformation. We have started to ...
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During the past few months, with somewhere to coronavirus everywhere, the invisible virus has taught us lesson. Post COVID-19 pandemic has disrupted the entire scenario of higher education and the educational Institutes in India has undergone massive reformed transformation. We have started to look into new openings to educate ourselves to find the solutions to paradigm shift in learning from traditional teaching method of chalk, talk and board to virtual teaching by means of innovations in technology. However, structural imbalances exist even in this digital era. The major issues with the rural learning is the problem of internet access, electricity and ICT tools like laptops and smart phones. The Government of India should take steps, consider the ground reality, work to bring poor, lower stratum of society, underprivileged students in the forefront of main stream quality education. Our country’s policies should ensure a strong foundation in this difficult time of crisis to innovate, ensure quality education to all for few critical months and future as well with sustainable inclusive development.
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
Dear Readers, A very Happy New Year 2017!International Association of Advanced Materials (IAAM, www.iaamonline.org) is pleased to announce cruise congress in Asia, Europe and America in year 2017 with collaboration of VBRI Press AB, Sweden (www.vbripress.com). The goal of congresses is to provide ...
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Dear Readers, A very Happy New Year 2017!International Association of Advanced Materials (IAAM, www.iaamonline.org) is pleased to announce cruise congress in Asia, Europe and America in year 2017 with collaboration of VBRI Press AB, Sweden (www.vbripress.com). The goal of congresses is to provide a global platform for researchers and engineers coming from academia and industry to present their research results and activities in the field of fundamental and interdisciplinary research of materials science and technology.
Gargi Dinda; Dipankar Halder; Atanu Mitra
Abstract
We report the successful synthesis of copper nanoparticle (CuNP)-starch composite employing low cost green protocol without inert gas protection. UV-Vis spectroscopy, X-Ray diffraction (XRD) and Transmission electron microscopy (TEM) were used to characterize the CuNP-starch composite. Mono-disperse ...
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We report the successful synthesis of copper nanoparticle (CuNP)-starch composite employing low cost green protocol without inert gas protection. UV-Vis spectroscopy, X-Ray diffraction (XRD) and Transmission electron microscopy (TEM) were used to characterize the CuNP-starch composite. Mono-disperse almost spherical CuNP having average diameter 4.02 ± 0.076 nm was obtained. The catalytic activity of the as-synthesized CuNP-starch composite during reduction of pollutants, like, 4-nitrophenol (4-NP) and dyes, Eosine Blue (EB), Eriochrome Black T (EBT) and Brilliant Cresyl Blue (BCB by NaBH4 has been investigated. High catalytic efficiency of the composite was demonstrated by rapid decrease of the intensity of the UV-Vis absorption peaks at respective λmax of the pollutants with time when reaction mixture contained NaBH4 and small quantity of CuNP-starch composite. The rate constant of each processes was calculated by considering that the reactions follow pseudo-first-order kinetics with respect to substrate. The obtained rate constants for 4-NP, EB, EBT and BCB are 0.021S-1, 0.011S-1, 0.036S-1 and 0.032S-1 respectively. The other application, antibacterial activity was tested against Gm positive and Gm negative bacteria. Plate count and minimum inhibitory concentration (MIC) studies show higher susceptibility of Gm positive bacteria towards CuNP-starch composite. The as-synthesized CuNP-starch composite may find potential application in the field of environmental remedies and antibacterial formulations. Copyright©2018 VBRI Press.
Vladimir G. Krishtop; Dmitry A. Zhevnenko; Evgeny G. Gornev; Sergey S. Vergeles; Alexander S. Bugaev; Vladimir G. Popov; Pavel V. Dudkin; Sergey V. Kohanovsky; Tatyana V. Krishtop
Abstract
In this paper, we consider technology and application of electrochemical transducers (ECT). Electrochemical systems are very promising for the development of a new element base for microelectronics. One of the most important directions is the design of micro-sized electrochemical acceleration and pressure ...
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In this paper, we consider technology and application of electrochemical transducers (ECT). Electrochemical systems are very promising for the development of a new element base for microelectronics. One of the most important directions is the design of micro-sized electrochemical acceleration and pressure sensors, and one of the most promising technologies is electrochemical transfer. Electrochemical transducers are very sensitive and energy-efficient and best suited for measuring weak mechanical movements. The basic principle consist in the following: microelectrodes are formed on a silicon chip and the chip is placed in a container with liquid electrolyte. Under the influence of an external mechanical signal, the electrolyte liquid starts moving (by inertia or by pressure) and transfers ions between the electrodes. The generated electric current is proportional to the external mechanical signal. We have developed a new microelectronic technology for electrochemical transducers, and have designed new instruments based on new electrochemical microelectronic chips. Currently, ECTs are applied for a variety of engineering tasks. ECTs are used to record the ground oscillation in the railway, in the tsunami early warning system, in electrochemical hydrophones for sea-bottom stations and for geoexploration systems, in the precise azimuth determination inertial systems. Copyright © VBRI Press.
Dr. Nidhi Chauhan
Abstract
Advanced materials have proven to be the greatest need for every individual in the present era. These materials are the basis of modern scientific technology and works suitably in every sector. Material science uses the combination of both man-made and naturally occurring things and their utilization ...
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Advanced materials have proven to be the greatest need for every individual in the present era. These materials are the basis of modern scientific technology and works suitably in every sector. Material science uses the combination of both man-made and naturally occurring things and their utilization through science and technology. Material science is a very broad subject that uses techniques from every field of science to create a substance of much utility. Nanomaterial structureshave become a common area of research for their special and unexpected applications in various fields. Nanotechnology plays a unique and the most important role in the field of advanced material manufacture. The applications of an advanced material may become a key to revolutionizing our lives in future.
Rachna .; Baljeet S. Saharan; Mahender S. Yadav; Nisha Sharma; Brijesh Prasad; P P Bhingole
Abstract
Magnesium is proving itself as a new generation metallic biomaterial which has the natural ability to biodegrade itself due to corrosion when made to interact with human tissues along with aqueous body fluid to treat, improve or replace anatomical elements of the human body. Magnesium based implants ...
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Magnesium is proving itself as a new generation metallic biomaterial which has the natural ability to biodegrade itself due to corrosion when made to interact with human tissues along with aqueous body fluid to treat, improve or replace anatomical elements of the human body. Magnesium based implants serves as temporary scaffold when they are placed in vivo and vitro which acts as temporary support for the part to be healed and was found that the healing took at a faster rate. After a deep search studying and observing different study work it was found that these implants were physiologically compatible, nontoxic, cytocompatible and stimulates bone growth with other favorable characteristics. Magnesium based alloys are very much helpful in different structural body parts such as orthopedic, dentistry, cardiovascular, craniofacial, otorhinology. Main concentration of this review was to discuss some of the more commonly available and frequently used methods for development of bio implant materials and their strengthening mechanism. This review work puts a light on the summary of magnesium based material development for different biomedical applications, with their biocorrosion behavior with advantages, weaknesses and characteristics, as well as a biological translation for these results. This will help the new researchers, scientists, scholars to find a better light material as bioimplant which are in them biodegradable and reduces the pain of secondary surgery. Copyright © 2018 VBRI Press.
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
From beginning of 2017, we are the editors of Advanced Materials Proceedings (AMP). The journal was implemented by previous editor-in-chief Ashutosh Tiwari. Since the activities of VBRI Press (www.vbripress.com) and International Association of Advanced Materials (www.iaamonline.org) has been growing ...
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From beginning of 2017, we are the editors of Advanced Materials Proceedings (AMP). The journal was implemented by previous editor-in-chief Ashutosh Tiwari. Since the activities of VBRI Press (www.vbripress.com) and International Association of Advanced Materials (www.iaamonline.org) has been growing constantly since the start a few years ago, the overall activities naturally needs more resources and time. With this letter we would like to introduce ourselves in short.
Kaushik Pal
Abstract
It’s our immense pleasure to introduce the proceedings of International Conference on Materials and Spectroscopy (ICMS) held on 11-12th December, 2018 at Saveetha Engineering College, Chennai, Tamil Nadu (India). ICMS’2018 conference mainly aims for the research area of Materials Science ...
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It’s our immense pleasure to introduce the proceedings of International Conference on Materials and Spectroscopy (ICMS) held on 11-12th December, 2018 at Saveetha Engineering College, Chennai, Tamil Nadu (India). ICMS’2018 conference mainly aims for the research area of Materials Science and Spectroscopy applications. With the joint efforts Bharath University (BIHER) and Saveetha Engineering College of ICMS’2018 all conference committees, there are more than 100 participants all over the world to attend this event. For this conference, we invited domestic and overseas well-known Materials Scientist and Nanotechnologist to share experience on relevant Nanoscience and Spectroscopy. The whole conference process was separated in two parts: Keynote lecture, oral, and poster presentations.
Shailesh Narain Sharma; Parul Chawla; Shefali Jain; Mansoor Ahamed; N. Vijayan; J. Sharma
Abstract
In this present work, Cu2ZnSn(Se1-x,Sx)4 nanocrystals with tunable band gaps have been synthesized via hot injection method in conjunction with TOP/TOP capping ligands. By varying the input precursor ratio Se/( S + Se), by adjusting the composition parameter x from 0 to 1.0, the band ...
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In this present work, Cu2ZnSn(Se1-x,Sx)4 nanocrystals with tunable band gaps have been synthesized via hot injection method in conjunction with TOP/TOP capping ligands. By varying the input precursor ratio Se/( S + Se), by adjusting the composition parameter x from 0 to 1.0, the band gaps of the CZTSSe-based nanocrystals can be linearly tuned from 1.2 to 1.5 eV respectively. For CZTSSe-based nanocrystals, high intensity of XRD peak corresponding to (112) direction revealed that the growth is oriented along (112) direction and its intensity increases with increase in Se/(S + Se) input precursor ratio. As the Se-content increases, the larger Se atoms (1.98 Å) replace the smaller larger S atoms (1.84 Å) resulting in an increase in the lattice parameters as shown by the shift of the XRD peaks to lower values of 2θ.XRD studies reveal the presence of stable kesterite phase although the presence of either stannite phase or both cannot be ruled out completely. It has been found that CZTSSe nanocrystallites owing to its high crystallinity and well-ordered 3-dimensional network and hence controlled morphology in its pristine form as compared with CZTSe, CZTS counterparts exhibits higher homogeneity, resistance against agglomeration and eventually higher current-voltage characteristics. To, the best of our knowledge, this is the first detailed report on the synthesis of multicomponent Cu2ZnSn(Se1-x,Sx)4 nanocrystals by hot injection method via the usage of both TOP (trioctyl phosphine) & TOPO (trioctyl phosphine oxide) capping ligands. The primary technological advantage of creating nanocrystals by this solution based method is the capability to easily form an ink that is compatible with a large variety of scalable film formation or printing processes for photovoltaic applications. Copyright © 2016 VBRI Press.
Pragati Jamdagni; Poonam Khatri; J. S. Rana
Abstract
The current study reports biogenic synthesis of silver nanoparticles from Elettaria cardamomum. Elettaria leaf extract was used as reducing and capping agent for nanoparticle synthesis from parent solution of silver nitrate. Nanoparticle suspension was characterized mainly using UV-Visible spectroscopy. ...
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The current study reports biogenic synthesis of silver nanoparticles from Elettaria cardamomum. Elettaria leaf extract was used as reducing and capping agent for nanoparticle synthesis from parent solution of silver nitrate. Nanoparticle suspension was characterized mainly using UV-Visible spectroscopy. Synthesis parameters namely, time, metal ion concentration, leaf extract quantity, reaction temperature and pH are well known to affect the final product of synthesis and hence, were varied to assess optimum conditions for synthesis. Nanoparticles synthesized at optimum conditions were washed and characterized using Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), Dynamic Light Scattering (DLS) and Transmission Electron Microscopy (TEM). Nanoparticles obtained were in the size range of 5-80 nm (TEM), with an average particle size of 29.96 nm as calculated using Debye-Scherrer formula and average hydrodynamic diameter of 32.12 nm (DLS). FTIR implicates plausible role of protein part of leaf extract in nanoparticle synthesis and DLS confirms monodisperse nature of the suspension. Nanoparticle suspension was found to be stable after four months of storage at room temperature without the addition of any stabilizing agents. Silver nanoparticles exhibited excellent antifungal activity against various fungal phytopathogens with minimum inhibitory concentration as low as 8 µg/mL for Aspergillus niger, making them potential antifungal agents in the field of agriculture. Copyright © 2018 VBRI Press.
Prashant Mishra
Abstract
For several years, nickel-cadmium had been the only panacea for powering up the electronic equipment, be it a mobile phone, car, laptop or any devices you just name it, we had to count on nickel-cadmium based batteries. Fortunately, three genius minds finally came up with a promising solution and laid ...
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For several years, nickel-cadmium had been the only panacea for powering up the electronic equipment, be it a mobile phone, car, laptop or any devices you just name it, we had to count on nickel-cadmium based batteries. Fortunately, three genius minds finally came up with a promising solution and laid the foundation of lithium-ion batteries’ legacy. The lithium-ions had been invented many decades ago though, but these Nobel laureate: John B Goodenough, M Stanley Whittingham and Akira Yoshino bring it to life [1-5].
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
When we write this, the American Advanced Materials Congress 2016 (AAMC 2016) (www.vbripress.com/aamc) has just been successfully carried out in December 04 - 09, 2016.It was conducted for the first time. The team at VBRI Press (www.vbripress.com) and International Association of Advanced Materials (IAAM, ...
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When we write this, the American Advanced Materials Congress 2016 (AAMC 2016) (www.vbripress.com/aamc) has just been successfully carried out in December 04 - 09, 2016.It was conducted for the first time. The team at VBRI Press (www.vbripress.com) and International Association of Advanced Materials (IAAM, www.iaamonline.org) used the experience and learning from the European Advanced Materials Congress to create an efficient program. This was indeed a challenge since most team members are located in Sweden and full team was not available. Now the IAAM office in US is being built up and we aim to use the American office to create an efficient team for organization of various events in US.
Malatesh S. Pujar; Shirajahammad M. Hunagund; Vani R. Desai; Ashok H. Sidarai
Abstract
Herein, we synthesis ZnO nanosheets via facial hydrothermal method using sodium hydroxide (NaOH) as a stabilizer. The synthesized ZnO was subjected to various characterizations for analysis of their optical, structural, functional groups, chemical composition, surface morphological and thermal studies, ...
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Herein, we synthesis ZnO nanosheets via facial hydrothermal method using sodium hydroxide (NaOH) as a stabilizer. The synthesized ZnO was subjected to various characterizations for analysis of their optical, structural, functional groups, chemical composition, surface morphological and thermal studies, obtained results reveals the following features; UV-Vis spectroscopy analysis shows absorption maximum at 272 nm which confirms the preliminary presence of ZnO material. X-ray diffraction (XRD) analysis reveals the average crystalline grain size is found to be of around 38.10 nm. Fourier transform infrared spectroscopy (FT-IR) analysis reveals the presence of O-H, C-H, C-N and Zn-O bands. Atomic force microscopy (AFM) and scanning electron microscopy analysis (SEM) shows the topological structure of ZnO and it having nanosheets like nature. Energy dispersive X-ray spectroscopy (EDS) analysis confirms the chemical compositions were Zn and O elements. Further, we observed by thermo gravimetric analysis (TGA) that for synthesized ZnO nanosheets weight loss is of 15.574% was occurred at 47.49˚ C to 300˚ C. After 300˚C, none of the materials underwent greater than 1% of weight loss. From DSC analysis, we observed that there are endothermic reactions in between 23˚C to 500˚C. In addition, we proposed to study biological activities of these synthesized ZnO nanosheets. Copyright © 2018 VBRI Press
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
All of us are in different stages of our careers. Like materials, time is needed to develop the foundation of a career or technology platform. We will enter challenges, and sometimes very much energy is needed. In our research, we find our special place in a research arena. Like successful business approaches, ...
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All of us are in different stages of our careers. Like materials, time is needed to develop the foundation of a career or technology platform. We will enter challenges, and sometimes very much energy is needed. In our research, we find our special place in a research arena. Like successful business approaches, we find niches where we have an advantageous edge. At such times, we can use our inspiration and learn from each other.
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
Most of us are active in research and focus on the scientific issues and expert areas of our profession. Nanotechnology is recognized as potential arena which can have a profound societal impact. It includes all aspects important for innovation: technology sectors, value chains and business areas. However, ...
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Most of us are active in research and focus on the scientific issues and expert areas of our profession. Nanotechnology is recognized as potential arena which can have a profound societal impact. It includes all aspects important for innovation: technology sectors, value chains and business areas. However, it is still challenged in industrialization by the width of what may be considered as nanotechnology. It includes life science, semiconductors, communication, processors, textiles etc, and nanotechnology initiatives are facing the need to either boost arena or select niches. At the same time there are rural challenges, and we need to meet to propose paths for solutions.
C. Sarika; M.S. Shivakumar; Lakhirupa Devi; K. Rekha; B. Narasimhamurthy; Sabu Thomas; Nandakumar Kalarikkal; I. C. Lekshmi
Abstract
A comparative study of the electrochemical behaviours of two different electrode matrices used in the construction of amperometric laccase biosensors is reported here for catechol detection in water. The matrices considered are NiO nanocrystal (NC) modified graphite electrode (MCPE-NiO) and Au electrode ...
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A comparative study of the electrochemical behaviours of two different electrode matrices used in the construction of amperometric laccase biosensors is reported here for catechol detection in water. The matrices considered are NiO nanocrystal (NC) modified graphite electrode (MCPE-NiO) and Au electrode of Clark type DO sensor. The laccase enzyme from Trametes versicolour was immobilized on electrode surfaces by co-crosslinking method using bovine serum albumin, a protein-based stabilizer, along with glutaraldehyde as the crosslinking agent. A comparison of the stability parameters of the electrode designs was carried out including sensitivity, calibration plots, analytical data and storage stability, and the biosensor performance was shown to be superior for MCPE-NiO-Lac compared to Au-Lac electrode. The NC modified system reached steady state within 6 seconds after the analyte contact and displayed a lower detection limit of 0.95 μM, while the Au electrode took 3 minutes to reach the same and had lower detection limit of 4 μM. Better reproducibility and longer linear response was also observed for MCPE-NiO system compared to the latter, all of which could be attributed to the microstructure of the electrode and the surface lattice arrangement in the embedded nanocrystals. Copyright © 2018 VBRI Press.
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
Dear Readers,Advanced Materials Innovations is a three-day international event organised by the International Association of Advanced Materials and VBRI Sverige AB during 22 - 24 August 2017, Stockholm, Sweden. The market for materials is changing from raw materials supply to innovation ...
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Dear Readers,Advanced Materials Innovations is a three-day international event organised by the International Association of Advanced Materials and VBRI Sverige AB during 22 - 24 August 2017, Stockholm, Sweden. The market for materials is changing from raw materials supply to innovation procurement concepts. The modern world creates a dynamic ad fast moving market. The challenge in making business from advanced materials is a new avenue for researchers, academia as well as for societal and political stakeholders.
Loreleyn F Flores; Karem Y Tucto; Jorge A Guerra; Rolf Grieseler; Jan A Töfflinger; Andres Osvet; Miroslaw Batentschuk; Roland Weingärtner
Abstract
Amorphous silicon oxycarbide (a-SiCxOy) single doped with Yb3+ and co-doped with the couple Tb3+ - Yb3+ thin films were grown on crystalline silicon substrates by rf magnetron sputtering. The elemental composition in at. % is determined by energy dispersive spectroscopy and fourier transform infrared ...
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Amorphous silicon oxycarbide (a-SiCxOy) single doped with Yb3+ and co-doped with the couple Tb3+ - Yb3+ thin films were grown on crystalline silicon substrates by rf magnetron sputtering. The elemental composition in at. % is determined by energy dispersive spectroscopy and fourier transform infrared spectroscopy allows to investigate the chemical properties of the host. The concentration of Yb in the single doped sample was 3.5% and for the codoped samples (Yb, Tb) were (3%, 0.9%), (3.5%, 0.6%) and (4%, 0.6%), respectively. Post-deposition annealing treatments were made in order to induce optical activation of the rare earths. Conversion or absorption of high energy photons were analyzed by photoluminescence spectroscopy. The photoluminescence spectra show that for a given temperature range in the thermal annealing process, as well as for the appropriate rare earth concentrations the activation of Yb3+ and Tb3+ is enhanced. A strong reduction of the Tb3+ emission in contrast to the Yb3+ emission in the a-SiCxOy,:Tb:Yb samples at annealing temperature at 500°C suggests a energy transfer from Tb3+ to Yb3+ ions. Copyright © 2018 VBRI Press.
Hisatoshi Kobayashi; Mikael Syväjärvi
Abstract
Dear Readers,The Asian Advanced Material Congress was carried out during 11-16 March 2017 on Diamond Princess Cruise Ship which was cruising from Singapore - Kuala Lumpur (Malaysia) - Penang (Malaysia) - Phuket (Thailand) - Singapore. At the conference, we had the opportunity to discuss various advanced ...
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Dear Readers,The Asian Advanced Material Congress was carried out during 11-16 March 2017 on Diamond Princess Cruise Ship which was cruising from Singapore - Kuala Lumpur (Malaysia) - Penang (Malaysia) - Phuket (Thailand) - Singapore. At the conference, we had the opportunity to discuss various advanced materials approaches and enjoy cultural experiences.Now when the advanced materials congress expands to have events in Europe, USA, and Asia annually and not only once per year with rotation to each world continent, it also means that there is a challenge to find time to attend and plan before each meeting to these congress events. So, in order to focus, the congress chair since many years Professor Anthony P.F. Turner decided to focus on his research activities and focus on Biosensors conferences.
Editors .
Abstract
Dear Readers,International Association of Advanced Materials (IAAM, www.iaamonline.org) is pleased to announce the 25th Assembly of Advanced Materials Congress - Advanced Functional Materials Congress (AFMC, www.advancedmaterialsseries.com/afmc19/), to be held during 24 – 27 March 2019 ...
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Dear Readers,International Association of Advanced Materials (IAAM, www.iaamonline.org) is pleased to announce the 25th Assembly of Advanced Materials Congress - Advanced Functional Materials Congress (AFMC, www.advancedmaterialsseries.com/afmc19/), to be held during 24 – 27 March 2019 in Stockholm (Sweden) and Helsinki (Finland) while cruising on the Baltic Sea. Advanced Materials Congress (AMC) provides an international platform for the academia and industries to discuss the recent trends in new age innovations and technology on the interdisciplinary field of advanced materials science and technology.