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Transactions - 7th World Biomaterials Congress

作者： Kato, M. Nagasaki, Y. Uchida, K. Takahashi, T. Kataoka, K. Preventure Program JST Department of Materials Science Tokyo University of Science 2641 Yamazaki Noda 278-8510 Japan Department of Materials Science Graduate School of Engineering University of Tokyo 7-3-1 Kongo Bunkyo-ku Tokyo 113-8656 Japan

ISBN: (纸本)1877040193

The specific sensing of antigen-antibody interaction was examined by using a PEGylated sensor. For the surface modification, acetal-PEG-SH was prepared and by using acetal-PEG-SH, PEG brush was constructed on the gold sensor chip surface. Modification of antibody was carried out by conjugation of SH group in Fab' to the maleimide group at the distal end of PEG chains on the surface. The result shows that the suitable modification of antibody on the PEG brush surface is very important to obtain high sensing character.

关键词： Polyethylene glycols

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Aberration-Corrected STEM Study of Magnetic Alloys

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Microscopy and Microanalysis 2012年第S2期18卷 394-395页

作者： Elhalawaty, S. Mardinly, A. John Carpenter, R.W. Materials Science and Engineering Graduate Program School for Engineering of Matter Transport and Energy Arizona State University 85287-6106 United States LeRoy Eyring Center for Solid State Science Arizona State University AZ 85287- 9506 United States

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

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Synthesis and characterization of few-layered carbon nanotubes decorated with magnetic nanoparticles envisaging potential technological applications

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Surfaces and Interfaces 2025年 66卷

作者： da Silva, Wellington Marcos da Silva, Mauro Francisco Pinheiro de Souza, Rodrigo Nunes Silva, Alysson Martins Almeida Rodrigues, Alisson Mendes Santos, Alexandre Silva da Silva, SebastiãoWilliam Mohallem, Nelcy Della Santina Coaquira, José Antonio Huamaní Graduate Program in Materials Science (PPGCIMA) Faculty UnB Planaltina (FUP) University of Brasília DF Brasilia 73.345-010 Brazil International Center of Physics Institute of Physics Campus Universitário Darcy Ribeiro University of Brasilia DF Brasilia 70.910-900 Brazil Mechanical Engineering Department Faculty of Technology Campus Universitário Darcy Ribeiro University of Brasilia DF Brasilia 70.910-900 Brazil Institute of Physics University of Brasilia Campus Universitário Darcy Ribeiro DF Brasilia 70.910-900 Brazil Department of Chemistry Institute of Exact Sciences Federal University of Minas Gerais Belo Horizonte-MG MG 31270-901 Brazil

In this work, high-quality few-layered carbon nanotubes (CNTs) were synthesized using a novel iron-oxide/sulfur-based catalyst via the chemical vapor deposition method (CVD). To enable external magnetic control for potential technological applications, CNTs incorporating magnetic nanoparticles were also produced. An efficient synthesis route, employing a microwave-assisted reaction, was used to generate and integrate the iron oxide nanoparticles and CNTs. The synthesized nanomaterials were thoroughly characterized using X-ray diffraction (XRD), Raman spectroscopy, thermogravimetric analysis (TGA/DTA), transmission electron microscopy (TEM) and magnetic measurements. The results indicate that the few-layered CNTs (sample CNT-Ox) exhibit a magnetic response, which is further modified upon the incorporation of magnetic nanoparticles (sample CNT-Ox-Mag), suggesting an effective interaction between the CNTs and the magnetic nanoparticles. However, after a reduction process (sample CNT-Ox-Mag-Red), the magnetization increases approximately 20-fold compared to the other two samples. This significant enhancement reflects the presence of a substantial amount (∼48 %) of metallic iron primarily located within the CNTs channel. Raman spectroscopy revealed characteristic bands at 261 and 263 cm⁻¹, confirming the presence of single and few-layered CNTs. TEM images further demonstrate that the nanoparticles are encapsulated within the CNTs. These findings indicate the successful formation of a hybrid CNTs/magnetic nanoparticles system, which serve as a multifunctional platform with promising potential for technological applications. © 2025 Elsevier B.V.

关键词： Carbon nanotubes Magnetic nanoparticles Magnetic properties Novel catalyst Synthesis

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Deterministic modeling of the corrosion of low-carbon steel by dissolved carbon dioxide and the effect of acetic acid. I-effect of carbon dioxide

Deterministic modeling of the corrosion of low-carbon steel ...

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作者： Rosas-Camacho, O. Urquidi-Macdonald, M. Macdonald, D.D. Intercollegiate Graduate Program in Materials Science and Engineering Penn State University University Park PA 16802 United States Department of Engineering Science and Mechanics Penn State University University Park PA 16802 United States Center for Electrochemical Science and Technology Department of Materials Science and Engineering Penn State University University Park PA 16802 United States

ISBN: (纸本)9781607681212

Carbon dioxide (CO2) corrosion of carbon steel in the presence of brine has been a recognized problem in oil production for many years and it is becoming more common with the extensive use of CO2-flooding as an oil recovery technique. The presence of acetic acid is systematic in oil fields, however, its role in corrosion has not been well-recognized and its exact mechanistic role is still debated. The present work was carried out, in the first instance, to focus on developing an understanding of CO 2-corrosion of low-carbon steel and, in the second instance to ascertain the corrosion mechanistic effect of acetic acid. This understanding is achieved by developing a deterministic model that explains and accounts for the experimental observations from Electrochemical Impedance Spectroscopy (EIS) data and by extracting values for physical und chemical parameters that describe the system. The impedance model, based on the Point Defect Model, provides a good account of the formation and growth of a bi-layer passive film that comprises an point-defective oxide (inner) layer adjacent to the metal surface and a precipitated (outer) layer of siderite, FeCO3, that forms on the top of the inner layer. We conclude that the barrier oxide layer exists on the steel surface at pH values ranging from 4 to 6. ©The Electrochemical Society.

关键词： Carbon dioxide

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Characterisation of sand casting and oyster shells as potential sources of raw material for the production of soda-lime glasses

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Chemical engineering Transactions 2015年 43卷 1795-1800页

作者： De Oliveira Maia, Bianca G. Arcaro, Sabrina Souza, Marcelo T. Novaes De Oliveira, Antonio P. Novais De Oliveira, T.M. Rodrigues Neto, João B. Graduate Program in Materials Science and Engineering - PGMAT Laboratory of Glass-Ceramic Materials - VITROCER Federal University of Santa Catarina - UFSC Florianópolis - SC88040- 900 Brazil University of Joinville Region - UNIVILLE Joinville - SC89219-710 Brazil

ISBN: (纸本)9788895608341

In this work, foundry sands (silica source) from metal casting and oyster shells (source of calcium carbonate) wastes were collected and characterized for use as raw materials for the production of soda-lime glasses. The wastes were characterized and classified according to their physical, chemical and mineralogical natures. The sands and crushed oyster shell samples had a particle size distribution suitable for the production of glasses (up to 200 μm). Chemical analysis confirmed the high silica content of sand samples (∼ 96 %) and calcium oxide in oyster shells (∼ 54 %). The results showed that the foundry sands and oyster shells are potential candidates to be used for the production of soda-lime glasses allowing thus the recovery of these wastes. Copyright © 2015, AIDIC Servizi S.r.l.

关键词： Lime

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Trace Determination of Cardiac Troponin I Using a Label-Free Fiber Optical Localized Surface Plasmon Resonance Biosensors

Trace Determination of Cardiac Troponin I Using a Label-Free...

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2024 Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2024 - Part of Optica Sensing Congress

作者： Chiang, Chang-Yue Chen, Chien-Hsing Wang, Chien-Tsung Wu, Chin-Wei Chiang, Hsing-Yu Graduate School of Engineering Science and Technology Interdisciplinary Program of Engineering National Yunlin University of Science and Technology Yunlin64002 Taiwan Department of Biomechatronics Engineering National Pingtung University of Science and Technology Pingtung91201 Taiwan Department of Chemical & Materials Engineering National Yunlin University of Science and Technology Yunlin64002 Taiwan

ISBN: (纸本)9781957171371

This work proposes a carboxyl-graphene-oxide-based fiber optic localized surface plasmon resonance biosensor which employed anti-Cardiac Troponin I (anti-cTnI) as the recognition element to detect the cTnI-protein in 10 min with a limit of detection (LOD) of 5.8 pM, which meets the acceptable LOD for clinical testing of 0.04 ng/mL. © Optica Publishing Group 2024, © 2024 The Author(s)

关键词： Surface plasmon resonance

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Correction: N-doped carbon nanoparticles on highly porous carbon nanofiber electrodes for sodium ion batteries

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RSC advances 2025年第8期15卷 6370页

作者： Meltem Yanilmaz Bülin Atıcı Jiadeng Zhu Ozan Toprakci Juran Kim Nano-Science and Nano-Engineering Program Graduate School of Science Engineering and Technology Istanbul Technical University Istanbul 34469 Turkey yanilmaz@itu.edu.tr. Textile Engineering Istanbul Technical University Istanbul 34469 Turkey. Smart Devices Brewer Science Inc. Springfield MO 65806 USA. Department of Polymer Materials Engineering Yalova University 77200 Yalova Turkey. Advanced Textile R&D Department Korea Institute of Industrial Technology (KITECH) Ansan 15588 Korea jkim0106@kitech.re.kr.

[This corrects the article DOI: 10.1039/D3RA00635B.].

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Block Copolymer Thin Films Above and Below the Order-Disorder Transition Temperature

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MRS Online Proceedings Library 2011年第1期629卷 1-6页

作者： Ratchana Limary Peter F. Green Dept. of Chemical Engineering and the Graduate Program in Materials Science The University of Texas at Austin Austin USA

Symmetric diblock copolymers undergo a disorder to order transition below a microphase separation transition temperature. In this temperature range the structure is characterized by alternating lamellae of thickness L. In thin film geometries, the lamellae are oriented normal to the substrate if there is a preferential interaction between either of the block constituents and the substrate/copolymer or copolymer/vacuum interfaces. Depending on the relation between the film thickness and L, the topography of the film might comprise of holes, islands or spinodal-like structures. We show that in a polystyrene-b-poly(methyl methacrylate) diblock copolymer of molecular weight 20, 000 g/mol, above the microphase separation transition temperature, the topography of the film depends on the thickness. A heirarchy of bicontinuous patterns and holes is observed with increasing film thickness for films thinner than 35 nm.

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The Alumina Film Nanomorphology Formed to Improve the Corrosion Resistance of Al-2.0 wt% Fe Alloy as Result of the Laser Surface Melting Technique Applied

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Advances in Chemical engineering and science 2017年第1期7卷 10-22页

作者： Moises Meza Pariona Katieli Tives Micene Graduate Program in Engineering and Materials Science State University of Ponta Grossa (UEPG) Ponta Grossa Brazil

The laser surface remelting (LSR) treatment was performed to Al-2.0 wt% Fe alloy with a 2 kW Yb-fiber laser (IPG YLR-2000S). The substrate and laser-treated material characterization were executed using different techniques. Among them, the microstructure was analyzed by optical microscope, SEM, low-angle X-ray diffraction (LAXRD) and the corrosion test was made in aerated solution of 0.1 M H2SO4 at a temperature of 25°C ± 0.5°C. As result was shown, the micrograph of LSR-treated material displaying can be a fine cellular structure and the existence of certain nano-porosities and a similar to a nano-dendritic growth was observed too. The characteristic of melted zone was constituted of metastable phases according to the result of x-rays and the behavior corrosion as a result of the LSR-treated sample, which it was shown to be more resistant to corrosion than the untreated sample. A comparative study was carried out of the cyclic polarization of the laser-treated and untreated samples, demonstrating that the reduction and oxidation reverse peaks were not observed and being the cyclic polarization behavior was of irreversible character in both samples, however, the LSR-treated sample propitious the passivity on the surface also reduced the corrosion phenomena. Wherefore, this type of laser-treated alloy can be applied in the aerospace, aeronautic and automobilist industries.

关键词： Al-2.0 wt% Fe Alloy Laser-Treated Microstructure Low-Angle X-Ray Diffraction Cyclical Polarization

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Effect of Surface Roughness on the Magnetism, Nano-indentation, Surface Energy, and Electrical Properties of Co60Fe20Dy20 Films on Si (100) Substrate

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Journal of Electronic materials 2024年第4期53卷 1752-1762页

作者： Liu, Wen-Jen Chang, Yung-Huang Chiang, Chia-Chin Chen, Yuan-Tsung Lin, Chih-Chien Chen, Pei-Ling Lin, Shih-Hung Department of Materials Science and Engineering I-Shou University Kaohsiung840 Taiwan Bachelor Program in Industrial Technology National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan Department of Mechanical Engineering National Kaohsiung University of Science and Technology Kaohsiung City80778 Taiwan Graduate School of Materials Science National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan

In this study, we focused on depositing a target material, cobalt-iron-dysprosium (Co60Fe20Dy20), onto silicon (Si) (100) substrates with thickness varying from 10 nm to 50 nm through a direct-current (DC) magnetron sputtering technique. The subsequent step involved subjecting the samples to an hour-long annealing process in a vacuum annealing furnace at temperatures of 100°C, 200°C, and 300°C. To assess the elemental composition of the CoFeDy films, energy-dispersive X-ray spectroscopy (EDS) was employed. An observed trend indicated an increase in low-frequency alternating-current magnetic susceptibility (χac) with the increasing thickness. Remarkably, the CoFeDy films exhibited their peak χac following annealing at 300°C, with an optimal resonance frequency of 50 Hz. After annealing at 300°C, the CoFeDy film’s surface energy peaked at 50 nm. The magnetic, electrical, and adhesive properties of the CoFeDy films were notably influenced by surface roughness at different annealing temperatures. Atomic force microscopy (AFM) analysis revealed a gradual reduction in film roughness post-annealing, corresponding to smoother surfaces indicative of a weaker domain wall pinning effect, heightened carrier conductivity, and increased liquid spreading. Collectively, these outcomes contributed to diminished χac, reduced electrical resistance, and enhanced adhesion. Graphical Abstract: (Figure presented.) © The Minerals, Metals & materials Society 2024.

关键词： Adhesion

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