Enhanced flux pinning of single grain bulk (Gd, Dy)BCO superconductors processed by cold-top-seeded infiltration growth method
Publication date: March 2020Source: Materials Science and Engineering: B, Volume 253Author(s): Pavan Kumar Naik S, Muralidhar M, Jirsa M, Murakami MAbstractSingle grain (Gd, Dy)BCO bulks were fabricated via cold-top-seeded infiltration growth process in air. Microstructural observations clarified that the size and dispersion of embedded (Gd, Dy)2BaCuO5 (211) secondary phase particles strongly varied in dependence of the grain refiners. The combined addition of Pt and CeO2 in each amount of 0.2 wt% increased the critical current density (Jcab, B‖c-axis) to 105 A/cm2 at 77 K and self-field. The microstructural an...
Source: Materials Science and Engineering: B - January 22, 2020 Category: Materials Science Source Type: research

Sn/SnO hybrid graphene for thermal interface material and interconnections with Sn hybrid carbon nanotubes
Publication date: March 2020Source: Materials Science and Engineering: B, Volume 253Author(s): Jagjiwan Mittal, Kwang Lung LinAbstractFew layer graphene (FLG) was successfully coated with Sn/SnO after reacting with SnCl2 and reducing under H2/N2 gas. X ray diffraction and X ray photoelectron spectroscopy showed the formation of Sn/SnO on the surface. The thermal diffusivity and conductivity of ~1 mm thick pallet of Sn/SnO coated hybrid FLG was surged to 7.91 mm2/s, 14.41 W/m.K from 2.17 mm2/s and 3.27 W/m.K of the pristine FLG, respectively. The increase in thermal properties was attributed to the ...
Source: Materials Science and Engineering: B - December 25, 2019 Category: Materials Science Source Type: research

Editorial Board
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): (Source: Materials Science and Engineering: B)
Source: Materials Science and Engineering: B - December 25, 2019 Category: Materials Science Source Type: research

Surface, structural and cryogenic magnetic studies of Cu, Co substituted NiFe2O4 thin films grown on Si substrate
Publication date: March 2020Source: Materials Science and Engineering: B, Volume 253Author(s): Hakikat Sharma, N.G. Deshpande, N.S. NegiAbstractSilicon (Si) is the most commonly used substrate material for fabricating integrated circuit; Si has very little fatigue effect. In the present work we developed pure NiFe2O4 and Cu, Co substituted NiFe2O4 thin films on Si substrate by metallo-organic decomposition (MOD) method using spin coating technique. The prepared thin films were characterized by XRD and Raman spectrometer for structural and phase identification. The topography and grain distribution of the prepared samples w...
Source: Materials Science and Engineering: B - December 25, 2019 Category: Materials Science Source Type: research

High Curie temperature in halfmetallic ferromagnets (Zn, Cr, Ti)Se and (Zn, Cr, Ti)Te for spintronic devices: Ab initio and Monte Carlo treatments
Publication date: March 2020Source: Materials Science and Engineering: B, Volume 253Author(s): I. Bouziani, Y. Benhouria, I. Essaoudi, A. Ainane, R. AhujaAbstractThe current study is purposed to investigate the magnetic- and electronic-properties of Zn1-2xCrxTixSe and Zn1-2xCrxTixTe systems by means of Ab initio and Monte Carlo calculations. We have predicted that the two systems show ferromagnetic halfmetallic behavior with 100% spin polarization at the Fermi level and their ferromagnetic stability is attributed to the double exchange coupling. Our calculations suggest further that these compounds exhibit a 2nd order ferr...
Source: Materials Science and Engineering: B - December 25, 2019 Category: Materials Science Source Type: research

Experimental data and modeling of electrical conductivity for polymer carbon nanotubes nanobiosensor during degradation in neutral phosphate-buffered saline (PBS)
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Yasser Zare, Kyong Yop RheeAbstractThis paper studies the conductivity of poly (lactic acid) (PLA)/poly (ethylene oxide) (PEO)/carbon nanotubes (CNT) nanocomposites during degradation in neutral phosphate-buffered saline (PBS) solution by experimental and modeling results. PLA/PEO/CNT nanocomposites are prepared and the conductivity of samples is measured before and during degradation. This system can be applied as a degradation nanobiosensor, because the variation of conductivity expresses the extent of degradation. A simple ...
Source: Materials Science and Engineering: B - December 13, 2019 Category: Materials Science Source Type: research

Fluorescence quantum yields and chromatic properties of poly(azomethine)s containing pyridine ring
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Kevser Temizkan, İsmet KayaAbstractThe poly(azomethine)s containing pyridine ring were synthesized in two stages and analyzed by electrochemical, optical and thermal analysis techniques. Pyridine with centric dialdehyde (DA-Py) and poly(azomethine-pyridine)s (PAZ-Py)s were synthesized by elimination and condensation reactions in organic solvent medium, respectively. The structures of the synthesized dialdehyde and poly(azomethine-pyridine)s were verified by nuclear magnetic resonance spectroscopy (NMR), Fourier-transform infr...
Source: Materials Science and Engineering: B - December 12, 2019 Category: Materials Science Source Type: research

One-step green route synthesis of spinel ZnMn2O4 nanoparticles decorated on MWCNTs as a novel electrode material for supercapacitor
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Kanakaraj Aruchamy, Radha Nagaraj, Halanur M. Manohara, Maalige R. Nidhi, Dibyendu Mondal, Debasis Ghosh, Sanna Kotrappanavar NatarajAbstractThis work focuses on designing new electrode materials by fabricating a nanocomposite hybrid of MWCNTs and a binary metal oxide, ZnMn2O4. The ZnMn2O4 has been extensively investigated as a high-performance anode in Li-ion battery, however, its capacitive faradaic charge storage behavior is rarely explored. Herein we demonstrate the fabrication of ZnMn2O4-CNT nanocomposites using acid modi...
Source: Materials Science and Engineering: B - December 10, 2019 Category: Materials Science Source Type: research

A novel N and Se codoped-carbon support anchoring Pd nanoparticles as an efficient electrocatalyst towards ethylene glycol electrooxidation
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Yinjuan Dong, Jiao Zhao, Juan Han, Yumao Kang, Yajun Mi, Wei WangAbstractCurrently, design of advanced support materials to develop an economical, high-efficient and long-durable electrocatalyst is a valuable research topic. Herein, an electrocatalyst (Pd/N-Se-C) of N and Se codoped-carbon (N-Se-C) support anchoring Pd nanoparticles (NPs) has been fabricated. Physical characterization exhibits Pd NPs are closely adjacent to N-Se-C support in Pd/N-Se-C electrocatalyst, leading to a strong metal-support interaction between Pd NP...
Source: Materials Science and Engineering: B - December 6, 2019 Category: Materials Science Source Type: research

Effect of alternative sonochemical treatment on zirconia surface and bond strength with veneering ceramic
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Natália Almeida Bastos, Paulo Noronha Lisboa-Filho, Americo Tabata, Paulo Afonso Silveira Francisconi, Adilson Yoshio Furuse, Heitor Marques Honório, Ana Flávia Sanches BorgesAbstractThe morphological characterization of sonochemical treatment on bond strength of Y-TZP/veneer ceramic was evaluated. The surface topography and roughness were analyzed by Confocal Laser Scanning Microscopy, Atomic Force Microscopy and Scanning Electron Microscopy. The phase transformation was identified through Micro-Raman Spe...
Source: Materials Science and Engineering: B - December 3, 2019 Category: Materials Science Source Type: research

SEHC: A high-throughput materials computing framework with automatic self-evaluation filtering
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Wenhao Zhu, Yonglin Xu, Jianyue Ni, Guannan Hu, Xiangmeng Wang, Wu ZhangAbstractEfficiency is one of the key problems in the design of high-throughput materials computing. In this paper, we provide a Self-Evaluation High-throughput Computing framework (SEHC). The framework introduces an automatic self-evaluation filtering mechanism, which is based on machine learning, for high-throughput computing architectures to stop unexpected materials calculation tasks in advance during high-throughput calculation. The time-consuming high...
Source: Materials Science and Engineering: B - December 3, 2019 Category: Materials Science Source Type: research

Converse piezoelectric behavior of three-dimensionally printed polymer and comparison of the in-plane and out-of-plane behavior
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Patatri Chakraborty, Chi Zhou, D.D.L. ChungAbstractThe converse piezoelectric effect (out-of-plane and in-plane directions) is reported in 3D-printed polymer without filler or poling, consistent with previously reported direct piezoelectric effect (out-of-plane direction only). Resin 1 (acrylate ester, viscosity 95 cP) and Resin 2 (methacrylate, viscosity 2950 cP) are used in the printing by stereolithography. Both direct and converse effects stem from the 2D shear stress during printing causing 2D in-plane molecular...
Source: Materials Science and Engineering: B - December 1, 2019 Category: Materials Science Source Type: research

Micromagnetic simulation of magnetic domain structures evolution of FeGa alloys by phase-field method
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Yanli Lu, Runan Guo, Tinghui Zhang, Zheng ChenAbstractThe stabilization of magnetic domains and their temporal evolution in FeGa alloys are predicted by combining micromagnetic model with phase-field method in this paper. The total free energy includes magnetocrystalline anisotropy energy, exchange energy, magnetostatic energy, external field energy and elastic energy. Under the diverse magnetic fields, domain structures are various because of the different total free energy and magnetization processes. The results show that w...
Source: Materials Science and Engineering: B - December 1, 2019 Category: Materials Science Source Type: research

Effect of dopant concentration on structural and optical properties of Cd0.7Zn0.3S semiconducting nanocrystals
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Indu Yadav, Dharamvir Singh AhlawatAbstractCu single doped and Cu, Mn co-doped Cd0.7Zn0.3S nanocrystals were synthesized successfully by co-precipitation method. XRD results confirmed hexagonal structure of as prepared Cu single doped and Cu, Mn co-doped Cd0.7Zn0.3S samples. The lattice constants, lattice plane, d-spacing, unit cell volume, Lorentz factor and dislocation density were also determined. The SEM analysis shows aggregation and nonuniform shapes of nanoparticles. The EDX spectra indicate the presence of S, Cd, Zn, C...
Source: Materials Science and Engineering: B - November 30, 2019 Category: Materials Science Source Type: research

Temperature assisted reorganization of silver nanoparticles in free-standing, flexible chitosan functionalized reduced graphene oxide thick films: A potential SERS probe for folic acid sensing
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): S. Asha, A. Nimrodh Ananth, Sujin P. Jose, Michael Anjello Jothi RajanAbstractChitosan and silver functionalized free standing reduced graphene oxide (rGO) films were prepared using simple soak and dry strategy. Redistribution of silver aggregates on chitosan functionalized rGO films were observed by thermally annealing these films at 450 °C, in an inert atmosphere. The re-organization / redistribution of silver aggregates in the rGO films were studied using in-situ Raman scattering signals. The redistribution of silver ...
Source: Materials Science and Engineering: B - November 30, 2019 Category: Materials Science Source Type: research

Novel band gap engineered Bi5Nb3O15/N-rGOcomposite catalyst for photo degradation of reactive dyes
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Brindha Appavu, Sivakumar Thiripuranthagan, Thamaraiselvi SureshkumarAbstractNiobate photo catalysts draw significant attention in the fields of both pollutant degradation and H2 generation. However, their chemically inert nature limits the synthetic routes available to obtain these semiconductors. In this work, we report the synthesis of bismuth niobate (Bi5Nb3O15) by a simple solvothermal method and incorporation of this material with nitrogen doped reduced graphene oxide for the first time. The synthesized catalysts were ch...
Source: Materials Science and Engineering: B - November 24, 2019 Category: Materials Science Source Type: research

Evolution of phase pure magnetic cobalt ferrite nanoparticles by varying the synthesis conditions of polyol method
Publication date: February 2020Source: Materials Science and Engineering: B, Volume 252Author(s): Sathish Shanmugam, Balakumar SubramanianAbstractThe mono-dispersed superparamagnetic CoFe2O4 nanoparticles have been prepared by polyol method at different synthesis conditions. The Raman results clearly emphasize that the samples prepared for 3 h reaction time alone have the peaks corresponding to pure CoFe2O4. The percentage of iron content was found to be high for sample prepared for 6 h (72.2%) reaction time compared to sample prepared for 12 h (65.4%). The atomic ratio between Co2+ and Fe3+ for samples prepared in 1...
Source: Materials Science and Engineering: B - November 23, 2019 Category: Materials Science Source Type: research

Editorial Board
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): (Source: Materials Science and Engineering: B)
Source: Materials Science and Engineering: B - November 21, 2019 Category: Materials Science Source Type: research

Influence of bath temperature on surface modification and optoelectronic properties of chemical bath deposited CdS thin film nanostructures
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): K.C. Wilson, M. Basheer AhamedAbstractCadmium sulfide thin film nanostructures with various surface morphologies were synthesized using chemical bath deposition method (CBD) by varying bath temperature. Samples deposited at room temperature shows surface morphology similar to ‘seaweed’ pattern that crystallized in cubic structure, whereas those deposited at higher temperatures exhibit ‘honeycomb’ like surface pattern with hexagonal crystal structure. HRTEM images of the honeycomb structure shows that, n...
Source: Materials Science and Engineering: B - November 20, 2019 Category: Materials Science Source Type: research

Solid polymer electrolytes based on poly(vinyl alcohol) incorporated with sodium salt and ionic liquid for electrical double layer capacitor
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): N. Farah, H.M. Ng, Arshid Numan, Chiam-Wen Liew, N.A.A. Latip, K. Ramesh, S. RameshAbstractSolid polymer electrolyte (SPE) based on poly(vinyl alcohol) (PVA) as a host polymer, sodium trifluoromethanesulfonate (NaTf) salt, and 1-butyl-3-methylimidazolium bromide (BmImBr) ionic liquid is fabricated using solution casting technique. The ionic conductivity, crystallinity, composition and thermal stability were characterized by electrochemical impedance spectroscopy (EIS), X-ray diffraction (XRD), Fourier transform infrared spectr...
Source: Materials Science and Engineering: B - November 20, 2019 Category: Materials Science Source Type: research

Simulation and fabrication of thermoelectric generators for hand held electronic gadgets
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Satish Addanki, D. NedumaranAbstractThermoelectric generators play an important role in energizing the electronic gadgets with improved functionality, which will be an alternative technology for battery-based devices in the near future. This work presents a simple design for the enhanced performance of the thermoelectric generator for such kind of applications. This design is based on dual side power generation from the heat produced by the human body and generated from the gadget, simultaneously. Initially, we simulated the d...
Source: Materials Science and Engineering: B - November 20, 2019 Category: Materials Science Source Type: research

A cooling fin to enhance the efficiency of crystal growth by physical vapor transport
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Hayder A. Al-Atabi, Mohamad I. Cheikh, M.H. Hosni, J.H. EdgarAbstractIn general for crystal growth, material should deposit on the seed crystal and not on any adjacent supporting structures. This efficiently uses the source material and avoids the possibility of spurious polycrystals encroaching on, and interfering with the single crystal growth. In this paper, a new crucible design with a cooling fin in contact with the seed was simulated and experimentally demonstrated on the physical vapor transport (PVT) crystal growth of ...
Source: Materials Science and Engineering: B - November 20, 2019 Category: Materials Science Source Type: research

Dielectric and ferroelectric properties of Gd3+ doped (K0.5Na0.5)0.96Li0.04(Nb0.8Ta0.20)O3 piezoelectric ceramics
We report the structural, dielectric, ferroelectric and piezoelectric properties of Gd3+ doped lead-free (K0.5Na0.5)0.96Li0.04(Nb0.8Ta0.20)O3 (KNLNT) ceramics. The transition temperature (TT-C and TO-T) shifted towards the lower temperature (281 °C and 110 °C) for (K0.5Na0.5)0.92Li0.04Gd0.04(Nb0.8Ta0.20)O3 (KNLGNT) ceramics. Frequency dispersion of TT-C or TO-T suggests that KNLGNT ceramics exhibit a relaxor behavior supported by the Vogel-Fulcher law and modified Curie Weiss law. Temperature-dependent resistivity analysis shows that the conduction mechanism follows Mott’s variable range hopping with an a...
Source: Materials Science and Engineering: B - November 20, 2019 Category: Materials Science Source Type: research

Fabrication of novel magnetic F-TiO2(B)/carbon nanostructures nanocomposites as photocatalysts for malachite green degradation under visible light
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Nasser Arsalani, Yasaman Panahian, Ramin NasiriAbstractMagnetic bronze F-TiO2/carbon nanostructures nanocomposites were facilely synthesized by using TTIP (titanium tetraisopropoxide) and carbon nanostructures (Multi-walled carbon nanotube (MWCNT) or Fullerene (C60)) as precursors via the hydrothermal process. The structure of the magnetic nanocomposites have been characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), UV–Vis diffuse reflectance spectroscopy, field emission scan...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

Effect of Ni substitution on structural, optical and magnetic properties of ferrite nanoparticles synthesized by co-precipitation route
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): P. Iranmanesh, Sh. Tabatabai Yazdi, M. MehranAbstractIn this research, fine nanoparticles of NixFe3−xO4 with Ni concentration up to x = 1.5 were synthesized via a simple one-step capping agent-free co-precipitation route. The effect of Ni substitution was investigated by details using X-ray diffractometer, transmission electron microscope, Fourier transform infrared and UV–Vis spectroscope, and vibrating sample magnetometer. The structural studies revealed that the particles have good crystallinity with diame...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

Highly electro-conductive graphene-decorated PANI-BiVO4 polymer-semiconductor nanocomposite with outstanding photocatalytic performance
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Md Rokon Ud Dowla Biswas, Kwang Youn Cho, Jae Doc Na, Won-Chun OhAbstractPolyaniline/Bismuth Vanadate/Graphene Oxide (PANI-BiVO4-GO or BGPA) composite was prepared by sonochemical deposition of bismuth vanadate-graphene oxide (BiVO4) nanoparticles on the surface of polyaniline (PANI). The 5 wt% BGPA composite had the best photocatalytic degradation performances for MB, RhB, and SO dyes, about 1.56, 1.81, and 1.68 times more, respectively, than 1% BGPA composite. Meanwhile, the photocatalytic stability of BiVO4 was significan...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

In situ synthesis of tower-like Ag-Sm(OH)3-ZnO photocatalyst with enhanced visible-light-driven photocatalytic activity
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Lixiong Yin, Changqing Liu, Jia Wang, Feifei Wang, Simin Chai, Dongdong Zhang, Xingang Kong, Huimin Li, Jianfeng HuangAbstract3D tower-like Ag-Sm(OH)3-ZnO morphologies were successfully synthesized via a facile in situ method by utilizing Sm(OH)3-ZnO as the precursor. The scanning electron microscopy (SEM) images reveal that the 3D tower-like Sm(OH)3-ZnO samples were grown to a 3D tower-shape. Additionally, silver nanoparticles were uniformly dispersed on the surface of Sm(OH)3-ZnO. The photo catalytic performances of the as-p...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

Bottom-up and green-synthesis route of amino functionalized graphene quantum dot as a novel biocompatible and label-free fluorescence probe for in vitro cellular imaging of human ACHN cell lines
In this study, bright green-luminescent probe (His-GQDs) were synthesized using a new one-pot “bottom-up” pyrolysis green-synthesis route, without consuming any water and chemical reagent. Citric acid as carbon source and Histidine as amino-functionalized agent, with optimized ratios, were used for fabricating His-GQDs as a novel, label-free, and selective probe. His-GQDs can be then used for cellular imaging of human ACHN cell lines that are composed of graphene sheets with the average size of 2.0 nm. Obtained His-GQDs probe has ultra-small size, low toxicity, chemical stability, biocompatibility, anti-photo...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

A green luminescence of lemon derived carbon quantum dots and their applications for sensing of V5+ ions
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Bui Thi Hoan, Tran Thi Thanh, Phuong Dinh Tam, Nguyen Ngoc Trung, Sunglae Cho, Vuong-Hung PhamAbstractA simple approach for the synthesis of luminescent carbon dots (C-dots) has been developed by the hydrothermal treatment of lemon juice as carbon precursor at 240 °C in 12 h. The obtained C-dots were found to emit bright green luminescence. Meanwhile, the C-dots exhibited excitation-dependence, photo-stability, and well dispersibility. The C-dots were used for detection of ion V5+ in water and serum, which was based on...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

Effect of lignin as accelerator of the biodegradation process of poly(lactic acid)/lignin composites
In this study, PLA was melt blended with 5, 10 and 15 wt% of Kraft lignin. The composites were prepared using a high-speed mixer rotating at 3000 rpm. In this process, the mixing, melting, and homogenization take place by the high friction between the rotor and the polymer. Test specimens were obtained by hot pressing. The thermal, mechanical and morphological properties of the composites were evaluated. Test specimens for Izod impact strength tests of all compositions were buried in the aquarium apparatus and kept at room temperature with humidity controlled. The samples were removed at 0, 30, 60, 90 and 180 days. A...
Source: Materials Science and Engineering: B - November 15, 2019 Category: Materials Science Source Type: research

Comprehensive structural analysis and electrical properties of (Cu, Al and In)-doped SnO2 thin films
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Sibel Gürakar, Tülay SerinAbstractThe undoped, Cu, Al and In (2 at. %) doped SnO2 thin films are deposited on the glass substrate by spray pyrolysis. The effect of Cu, Al and In doping on the structural properties of SnO2 films are investigated by X-ray diffraction (XRD) method. All structural parameters including crystallite size, lattice strain, stress and energy density values are determined from three different models based on Williamson-Hall (W-H) and size-strain plot (SSP) methods. The obtained results reveal t...
Source: Materials Science and Engineering: B - November 10, 2019 Category: Materials Science Source Type: research

Phonon properties of multiferroic BiFeO3
Publication date: December 2019Source: Materials Science and Engineering: B, Volume 251Author(s): Xian-Sheng CaoAbstractThe phonon properties of BiFeO3 have been studied by using the specific heat. It is found that the specific heat of BiFeO3 exhibits two peaks. The first peak appears at the magnetic phase transition temperature TN = 650 K. This anomaly in specific heat can be interpreted as antiferromagnetic transition. The values of the specific heat (at the magnetic phase transition temperature TN) increase with the increasing of the J1, |J2|, I and g. Another abnormal peak of specific heat appears at nearly 550...
Source: Materials Science and Engineering: B - November 10, 2019 Category: Materials Science Source Type: research

Editorial Board
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): (Source: Materials Science and Engineering: B)
Source: Materials Science and Engineering: B - November 8, 2019 Category: Materials Science Source Type: research

Polypyrrole-Coated Polycaprolactone-Gelatin Conductive Nanofibers: Fabrication and Characterization
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Tahere Khatti, Hossein Naderi-Manesh, Seyed Mehdi KalantarAbstractElectrically conductive nanofibrous meshes composed of polypyrrole, polycaprolactone and gelatin construct using a two-step approach including electrospinning and in situ polymerization. Nanometer-scale thick polypyrrole (PPy) is grown on the surface of electrospun polycaprolactone-gelatin (PCL-Gel) nanofiber by in situ chemical polymerization. Different PCL-to-gel ratios and fiber orientations are employed to construct template scaffolds for the coating reactio...
Source: Materials Science and Engineering: B - November 8, 2019 Category: Materials Science Source Type: research

Experimental and theoretical study of thermoelectric properties of rhombohedral GeSb5Te10 thin films
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Athorn Vora-ud, Tosawat Seetawan, Manish KumarAbstractRhombohedral GeSb5Te10 thin films are synthesized onto Al2O3 substrate by a pulsed-DC magnetron sputtering method using a target prepared by hot-pressing method. Thermoelectric properties of these films are studied as a function of temperature from room temperature to 773 K and correlated to the microstructural and surface properties. It is found that the phase transformation from amorphous to rhombohedral phase of GeSb5Te10, observed in temperature range 473–773 ...
Source: Materials Science and Engineering: B - November 2, 2019 Category: Materials Science Source Type: research

Cold sintering process for fabrication of a high volumetric capacity Li4Ti5O12 anode
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Joo-Hwan Seo, Kris Verlinde, Ramakrishnan Rajagopalan, Enrique D. Gomez, Thomas E. Mallouk, Clive A. RandallAbstractThe cold sintering process (CSP) is useful for densifying lithium ion battery composite electrodes to achieve higher volumetric capacity density. Lithium titanate is one of the most promising anode materials to replace graphite in conventional anodes, as it enhances safety in large scale applications. A densified binder-free LTO based anode was fabricated by the cold sintering process. The composite anode was fir...
Source: Materials Science and Engineering: B - October 30, 2019 Category: Materials Science Source Type: research

Germanium substitution effect on the property and performance of Cu2ZnSnSe4 thin films and its solar cell having absorber layer made by sputtering with single metallic target plus selenization
We report on the germanium substitution effect on the Cu2ZnSnSe4 solar cell performance with absorber layer prepared by sputtering with a single metallic target plus further selenization. We synthesized the Cu2Zn(Sn1-xGex)Se films with the [Ge]/([Ge] + [Sn]) percentages of 0%, 5%, 10%, 15%, and 20% when different x ratios were 0, 0.05, 0.1, 0.15, and 0.2. Defect chemistry was studied by measuring the structural, electrical, and optical properties of CZTGSe as a function of dopant concentration. The enhanced device performance was shown with the increased Ge content to CZTSe. The solar cell was fabricated with a stack s...
Source: Materials Science and Engineering: B - October 27, 2019 Category: Materials Science Source Type: research

First principle study of mechanical stability, magneto-electronic and thermodynamic properties of double perovskites: A2MgWO6 (A = Ca, Sr)
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Shabir Ahmad Mir, Saleem Yousuf, Dinesh C. GuptaAbstractThe first principle method within the framework of density functional theory is employed in order to explore the ground state structure along with electronic, elastic, and thermodynamic properties of double perovskites A2MgWO6 (A = Ca, Sr). Crystal structure optimization reveals nonmagnetic phase as stable state. The computed ground state parameters are consistent with the earlier results. Structural stability is further confirmed through computation of cohesive energ...
Source: Materials Science and Engineering: B - October 27, 2019 Category: Materials Science Source Type: research

Low temperature sintering mechanism for Li2Mg3SnO6 microwave dielectric ceramics
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Zhifen Fu, Can Li, Jianli Ma, Yilong WuAbstractLow-fired Li2Mg3SnO6 ceramics were fabricated via the conventional solid-state reaction route, and the effects of LiF-doping on their sintering mechanism and microwave dielectric properties were investigated. Sintering temperature of Li2Mg3SnO6 ceramics were effectively reduced to 900 °C due to the substitution of F− for O2−, which could cause weakening of oxygen bond strength induced reduced the intrinsic sintering temperature and facilitates the diffusion proce...
Source: Materials Science and Engineering: B - October 24, 2019 Category: Materials Science Source Type: research

Effect of oxygen vacancies on photoluminescence and electrical properties of (2 0 0) oriented fluorine-doped SnO2 films
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Xuan Wang, Qingyin Di, Xiaolong Wang, Hongli Zhao, Bo Liang, Jingkai YangAbstractPolycrystalline fluorine-doped SnO2 (FTO) films have been deposited on glass substrate by ultrasonic spray pyrolysis at 500 °C. The effects of F/Sn atom ratio in precursor solution on the structural, optical and electrical properties of FTO films have been investigated. The XRD results indicate that all films consist of polycrystalline cassiterite tetragonal particles with obviously (2 0 0) preferred orientations. SEM images present that...
Source: Materials Science and Engineering: B - October 22, 2019 Category: Materials Science Source Type: research

A novel temperature stable Mg0.5Ti0.5NbO4-based microwave dielectric material
Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Liping Zhao, Peng Liu, Zhifen FuAbstractA novel temperature stable Mg0.5Ti0.5NbO4-based microwave dielectric ceramic was fabricated by using the nanopowders (317 nm) derived from high energy ball milling (HEBM) method. An orthorhombic ixiolite structure was detected for Mg0.5Ti0.5NbO4 ceramics coupled with a minor of second phase Mg0.167Nb0.33Ti0.5O2. With increasing sintering temperature, the amount of Mg0.167Nb0.33Ti0.5O2 phase decreased as well as the dielectric constant (εr) and temperature coefficient of resonan...
Source: Materials Science and Engineering: B - October 12, 2019 Category: Materials Science Source Type: research

Editorial Board
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): (Source: Materials Science and Engineering: B)
Source: Materials Science and Engineering: B - October 10, 2019 Category: Materials Science Source Type: research

Rapid investigation expiry drug green corrosion inhibitor on mild steel in NaCl medium
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): N. Palaniappan, J. Alphonsa, I.S. Cole, K. Balasubramanian, I.G. BoscoAbstractThe unused expired clinical drugs are a major environmental hazardous pollutant due to the pharmaceutically active organic compounds present in it. Until recently, a quantum of unused drugs is being disposed through sewers, drainage, sediment are a threat to the public health. Several researchers have already reported the potential use of expired drugs as corrosion inhibitors in both acidic and alkaline medium. In this paper, we have reported three di...
Source: Materials Science and Engineering: B - October 5, 2019 Category: Materials Science Source Type: research

Anisotropic hole drift velocity in 4H-SiC
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): Jackelinne L. Vasconcelos, Clóves G. Rodrigues, Roberto LuzziAbstractA theoretical study on the nonlinear transport of holes in the transient and steady state of p-doped 4H-SiC under the influence of high electric fields is presented. It is based on a nonlinear quantum kinetic theory which provides a clear description of the dissipative phenomena that are evolving in the system. The hole drift velocity and the nonequilibrium temperature are obtained, and their dependence on the electric field strength is derived and anal...
Source: Materials Science and Engineering: B - October 5, 2019 Category: Materials Science Source Type: research

A fast scanning calorimetry study of nucleation in a Se90Te10 glass
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): Suresh Kumar Pillai, Christoph Schick, Jiří MálekAbstractFast scanning calorimetry has been used to study isothermal nucleation rates in a Se90Te10 chalcogenide glass. Calorimetry scans at 2000 °C/s, sufficient to suppress crystallization of glass, were used on samples subjected to combined nucleation-growth treatments. Nuclei densities were obtained from the analysis of melting-peaks using the Johnson–Mehl–Avrami–Yerofeeyev–Kolmogorov equation. The estimated densities and rates of n...
Source: Materials Science and Engineering: B - September 30, 2019 Category: Materials Science Source Type: research

Fabrication of arrayed microwells with wrinkle microstructure by ink-jet and diamond-like carbon thin film deposition process
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): Masahito Ban, Yuuya Kogi, Taichi HiroseAbstractFabrication of microwells is an important technology to create and enhance the functions needed for the biological applications of microfluidic devices. In this paper, how to fabricate arrayed microwells on poly(dimethylsiloxane) (PDMS) substrates handily using an ink-jet processing was presented. More, the microwells having wrinkle microstructures with several μm size on the surfaces were fabricated by a combination procedure of the ink-jet and diamond-like carbon (DLC) thin fi...
Source: Materials Science and Engineering: B - September 18, 2019 Category: Materials Science Source Type: research

Broadband polarization-insensitive absorption by metasurface with metallic pieces for energy harvesting application
We present a broadband absorber in tri-layer plasmonic metamaterials with an electro-optic material as a substrate to fine tune the resonances. Broad resonant absorption peaks are achieved in a structure with metallic pieces. In the wavelength range from 300 nm to 2200 nm, the absorption spectral width is calculated to be 1078 nm, 566 nm, 282 nm, 119 nm, and 78 nm with absorption levels of 75%, 90%, 94.6%, 98.6%, and 99.4%, respectively. The total absorption efficiency, of the structure is evaluated to be 71.43%, which approaches to the absorption efficiency of a complex design with over 40-pair layers. The w...
Source: Materials Science and Engineering: B - September 18, 2019 Category: Materials Science Source Type: research

High dielectric constant polymer nanocomposite for embedded capacitor applications
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): V.P. Anju, Sunil K. NarayanankuttyAbstractThe advancement in communication technology has led to the enormous attention to the development of energy storage materials. Polymer based materials are emerging as one of the potential components for high energy storage devices. Here, we report the development of flexible high-performance composites based on poly(vinyl alcohol) (PVA) and polyaniline (PANI) modified carbon nanofibers (CNF) by solution casting method. High dielectric constant, metal-insulator-metal (MIM) capacitor was f...
Source: Materials Science and Engineering: B - September 17, 2019 Category: Materials Science Source Type: research

Structure and electrical properties of Bi0.5Ba0.5FeO3-Y2O3 composite NTC ceramics
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): Peng Fu, Guangtan Miao, Ming Yin, Wei Li, Jigong Hao, Guorong Li, Chuming WangAbstract(1 − x) Bi0.5Ba0.5FeO3 (BBF)-xY2O3 negative temperature coefficient (NTC) ceramics were prepared by solid-state reaction method. With increasing Y2O3 contents, the grain sizes of the samples increase. All (1 − x) BBF-xY2O3 ceramics have the typical NTC effect. The conductive mechanism of BBF based ceramics is largely the electron hopping. The thermistor constants B25/75 of the (1 − x) BBF-xY2O3 ceramics keep the l...
Source: Materials Science and Engineering: B - September 14, 2019 Category: Materials Science Source Type: research

Cobalt ferrites/activated carbon: Synthesis, magnetic separation and catalysis for potassium hydrogen persulfate
Publication date: October 2019Source: Materials Science and Engineering: B, Volume 249Author(s): Huidong Chen, Yanting Yang, Junqi Wei, Jiankang Xu, Jing Li, Panfeng Wang, Jingcai Xu, Yanbing Han, Hongxiao Jin, Dingfeng Jin, Xiaoling Peng, Bo Hong, Hongliang Ge, Xinqing WangAbstractMagnetic cobalt ferrites (CoFe2O4)/activated carbon (AC) nanocomposites were prepared by the hydrothermal method, and then the catalysis for potassium hydrogen persulfate (PMS) to degrade methylene blue (MB) was investigated. The results indicated that 9 wt% CoFe2O4 nanoparticles supplied the sufficient magnetic response for magnetic separatio...
Source: Materials Science and Engineering: B - September 12, 2019 Category: Materials Science Source Type: research