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1

Sahoo, Prangya P., Martin Kemeny, Boris Hudec, et al. "Enhanced Performance of LiFePO4 Cathodes Protected By Atomic Layer Deposited Ultrathin Alumina Films." ECS Meeting Abstracts MA2022-02, no. 3 (2022): 306. http://dx.doi.org/10.1149/ma2022-023306mtgabs.

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The LiFePO4 (LFP) cathode has a theoretical specific capacity of 170 mAh/g. This material is stable, safe, and environmentally benign. Li-ion batteries with LFP cathodes have a long cycle life with excellent charging/discharging performance. In our contribution, we show that the surface modification of the LFP cathode using ultrathin alumina films grown by atomic layer deposition (ALD) can improve Li-ions charge transfer and rate performance of the Li-ion in half-cell configuration with the LFP cathode. We used two types of LFP cathodes in our study with Li-metal as an anode in a half cell con
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2

Frąckiewicz, Justyna E., Tomasz K. Pietrzak, Maciej Boczar, et al. "Electrochemical Properties of Pristine and Vanadium Doped LiFePO4 Nanocrystallized Glasses." Energies 14, no. 23 (2021): 8042. http://dx.doi.org/10.3390/en14238042.

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In our recent papers, it was shown that the thermal nanocrystallization of glassy analogs of selected cathode materials led to a substantial increase in electrical conductivity. The advantage of this technique is the lack of carbon additive during synthesis. In this paper, the electrochemical performance of nanocrystalline LiFePO4 (LFP) and LiFe0.88V0.08PO4 (LFVP) cathode materials was studied and compared with commercially purchased high-performance LiFePO4 (C-LFP). The structure of the nanocrystalline materials was confirmed using X-ray diffractometry. The laboratory cells were tested at a w
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Fu, Yanqing, Qiliang Wei, Gaixia Zhang, et al. "LiFePO4-Graphene Composites as High-Performance Cathodes for Lithium-Ion Batteries: The Impact of Size and Morphology of Graphene." Materials 12, no. 6 (2019): 842. http://dx.doi.org/10.3390/ma12060842.

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In this work, we investigated three types of graphene (i.e., home-made G, G V4, and G V20) with different size and morphology, as additives to a lithium iron phosphate (LFP) cathode for the lithium-ion battery. Both the LFP and the two types of graphene (G V4 and G V20) were sourced from industrial, large-volume manufacturers, enabling cathode production at low cost. The use of wrinkled and/or large pieces of a graphene matrix shows promising electrochemical performance when used as an additive to the LFP, which indicates that the features of large and curved graphene pieces enable constructio
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4

Sahoo, Prangya Parimita, Alper Güneren, Boris Hudec, et al. "Improved Properties of Li-Ion Battery Electrodes Protected By Al2O3 and ZnO Ultrathin Layers Prepared By Atomic Layer Deposition." ECS Meeting Abstracts MA2022-02, no. 31 (2022): 1136. http://dx.doi.org/10.1149/ma2022-02311136mtgabs.

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Surface modification using thin layers grown by atomic layer deposition (ALD) is an effective strategy for performance improvement of Li-ion batteries. Ultrathin Al2O3 layers are the most studied coating material. In our contribution we compare properties of Al2O3 and ZnO ultrathin layers prepared by ALD on lithium-iron-phosphate (LFP) cathodes and Si-graphite anodes. Ultrathin Al2O3 and ZnO films were grown at 100 °C using trimethylaluminum (TMA) and diethylzinc (DEZ) precursors, respectively, with water vapors as reactant. The growth rates of the Al2O3 and ZnO films were about 0.1 nm/cycle o
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5

Pattammattel, A., R. Tappero, M. Ge, et al. "High-sensitivity nanoscale chemical imaging with hard x-ray nano-XANES." Science Advances 6, no. 37 (2020): eabb3615. http://dx.doi.org/10.1126/sciadv.abb3615.

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Resolving chemical species at the nanoscale is of paramount importance to many scientific and technological developments across a broad spectrum of disciplines. Hard x-rays with excellent penetration power and high chemical sensitivity are suitable for speciation of heterogeneous (thick) materials. Here, we report nanoscale chemical speciation by combining scanning nanoprobe and fluorescence-yield x-ray absorption near-edge structure (nano-XANES). First, the resolving power of nano-XANES was demonstrated by mapping Fe(0) and Fe(III) states of a reference sample composed of stainless steel and
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6

Ni, Jie, Yike Lei, Yongkang Han, et al. "Prefabrication of a Lithium Fluoride Interfacial Layer to Enable Dendrite-Free Lithium Deposition." Batteries 9, no. 5 (2023): 283. http://dx.doi.org/10.3390/batteries9050283.

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Lithium metal is one of the most attractive anode materials for rechargeable batteries. However, its high reactivity with electrolytes, huge volume change, and dendrite growth upon charge or discharge lead to a low CE and the cycle instability of batteries. Due to the low surface diffusion resistance, LiF is conducive to guiding Li+ deposition rapidly and is an ideal component for the surface coating of lithium metal. In the current study, a fluorinated layer was prepared on a lithium metal anode surface by means of chemical vapor deposition (CVD). In the carbonate-based electrolyte, smooth Li
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7

Ramirez-Meyers, Katrina, and Jay Whitacre. "Characterization of Used A123 LiFePO4 Cells from a Hybrid-Bus Battery Pack." ECS Meeting Abstracts MA2022-01, no. 5 (2022): 596. http://dx.doi.org/10.1149/ma2022-015596mtgabs.

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As the battery market grows, developing a battery waste management economy becomes imperative. After primary use, the main options for discarded batteries are recycling, refurbishment, reuse, or disposal. Recycling involves extracting valuables materials from ground-up battery cells, while reuse and refurbishment involve direct use of packs or their components, with or without maintenance adjustments. Recycling and disposal are the most common battery waste pathways, while reuse and refurbishment practices require further understanding of battery degradation before being implemented on a large
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8

Kang, Seok Hyeon, Hwan Yeop Jeong, Sang Jun Yoon, et al. "Hydrocarbon-Based Composite Membrane Using LCP-Nonwoven Fabrics for Durable Proton Exchange Membrane Water Electrolysis." Polymers 15, no. 9 (2023): 2109. http://dx.doi.org/10.3390/polym15092109.

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A new hydrocarbon-based (HC) composite membrane was developed using liquid crystal polymer (LCP)-nonwoven fabrics for application in proton exchange membrane water electrolysis (PEMWE). A copolymer of sulfonated poly(arylene ether sulfone) with a sulfonation degree of 50 mol% (SPAES50) was utilized as an ionomer for the HC membranes and impregnated into the LCP-nonwoven fabrics without any surface treatment of the LCP. The physical interlocking structure between the SPAES50 and LCP-nonwoven fabrics was investigated, validating the outstanding mechanical properties and dimensional stability of
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9

Wu, Mi, Zhengyi Han, Wen Liu, et al. "Silk-based hybrid microfibrous mats as guided bone regeneration membranes." Journal of Materials Chemistry B 9, no. 8 (2021): 2025–32. http://dx.doi.org/10.1039/d0tb02687e.

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LAPONITE® (LAP) nanoplatelets were incorporated within a regenerated silk fibroin (RSF) microfibrous mat via electrospinning, which exhibited better cell adhesion and proliferation of bone marrow mesenchymal stem cells (BMSCs) than the pristine RSF ones.
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10

Silva, Jhonatan M., Fernando E. Maturi, Hernane S. Barud, Vera R. L. Constantino, and Sidney J. L. Ribeiro. "New organic-inorganic hybrid composites based on cellulose nanofibers and modified Laponite." Advanced Optical Technologies 7, no. 5 (2018): 327–34. http://dx.doi.org/10.1515/aot-2018-0030.

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Abstract The combination of cellulosic materials and clays, such as Laponite, can provide composites with superior optical and mechanical properties compared to pristine cellulose. Synthetic clays can also be used as a host matrix for the immobilization of luminescent complexes, as the incorporated complexes may present enhanced emission quantum efficiency, photo and thermostability compared to the non-immobilized ones. In this way, we, herein, report the preparation of luminescent composites through the incorporation of a Eu(III) complex [Eu3+(tta)n] containing Laponite (Lap) into cellulose n
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11

Cho, Sung-Woo, Henrik Ullsten, Mikael Gällstedt, and Mikael S. Hedenqvist. "Heat-Sealing Properties of Compression-Molded Wheat Gluten Films." Journal of Biobased Materials and Bioenergy 1, no. 1 (2007): 56–63. http://dx.doi.org/10.1166/jbmb.2007.1978.

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The impulse heat-sealing properties of wheat gluten films were investigated. Films containing 30 wt% glycerol were compression molded at 100–130 °C and then sealed in a lap-shear or peel-test geometry at 120–175 °C. The tensile properties of the pristine films and the lap-shear and peel strength of the sealed films were evaluated and the seals were examined by scanning electron microscopy. Glycerol was added to the film surfaces prior to sealing in an attempt to enhance the seal strength. It was observed that the wheat gluten films were readily sealable. At a 120 °C sealing temperature and wit
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12

Hawi, Sara, Somayeh Gharavian, Marek Burda, et al. "Development of carbonaceous tin-based solder composite achieving unprecedented joint performance." Emergent Materials 4, no. 6 (2021): 1679–96. http://dx.doi.org/10.1007/s42247-021-00337-9.

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AbstractWeight reduction and improved strength are two common engineering goals in the joining sector to benefit transport, aerospace, and nuclear industries amongst others. Here, in this paper, we show that the suitable addition of carbon nanomaterials to a tin-based solder material matrix (C-Solder® supplied by Cametics Ltd.) results in two-fold strength of soldered composite joints. Single-lap shear joint experiments were conducted on soldered aluminium alloy (6082 T6) substrates. The soldering material was reinforced in different mix ratios by carbon black, graphene, and single-walled carb
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13

Abdelhamid, Leila, Xavier Cabana-Puig, Brianna Swartwout, et al. "Retinoic acid exerts disease stage-dependent and tissue-specific effects on pristane-induced lupus." Journal of Immunology 204, no. 1_Supplement (2020): 236.11. http://dx.doi.org/10.4049/jimmunol.204.supp.236.11.

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Abstract We previously showed that all-trans-retinoic acid (tRA) exacerbated pre-existing autoimmunity in lupus; however, its effects before disease onset are unknown. Here, using a pristane-induced model, we show that tRA exerts tissue-specific effects when given at the initiation vs. continuation phase of lupus. Pre-pristane treatment with tRA aggravated glomerulonephritis through increasing renal expression of pro-fibrotic protein laminin β1, activating bone marrow CD11b- conventional dendritic cells, increasing the splenic CD4:CD8 ratio, and upregulating the interaction of ICAM-1 and LFA-1
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14

Francis, Lijo, and Nidal Hilal. "Electrosprayed CNTs on Electrospun PVDF-Co-HFP Membrane for Robust Membrane Distillation." Nanomaterials 12, no. 23 (2022): 4331. http://dx.doi.org/10.3390/nano12234331.

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In this investigation, the electrospraying of CNTs on an electrospun PVDF-Co-HFP membrane was carried out to fabricate robust membranes for the membrane distillation (MD) process. A CNT-modified PVDF-Co-HFP membrane was heat pressed and characterized for water contact angle, liquid entry pressure (LEP), pore size distribution, tensile strength, and surface morphology. A higher water contact angle, higher liquid entry pressure (LEP), and higher tensile strength were observed in the electrosprayed CNT-coated PVDF-Co-HFP membrane than in the pristine membrane. The MD process test was conducted at
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15

Ciardiello, R., B. Martorana, VG Lambertini, and V. Brunella. "Iron-based reversible adhesives: Effect of particles size on mechanical properties." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 8 (2017): 1446–55. http://dx.doi.org/10.1177/0954406217736552.

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A hot melt adhesive – mainly used for bonding plastic component in automotive field – was modified with different iron-based particles to give it a reversible behaviour. Mechanical and physical properties of these reversible adhesives were experimentally assessed in the work. The modified adhesives, coupled with electromagnetic induction, are able to guarantee separation of the joints without any damage to the substrates for recycling, reuse or repairing of components. Single lap joint specimens were prepared using epoxy/glass fibres substrates and tests were carried out on neat and modified a
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16

Zhuang, Fujian, and Puhui Chen. "Effects of missing fasteners on the mechanical behavior of double-lap, multi-row composite bolted joints." Journal of Composite Materials 52, no. 28 (2018): 3919–33. http://dx.doi.org/10.1177/0021998318771464.

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This paper presents a numerical investigation into the effects of missing fasteners on the mechanical characteristics of double-lap, multi-row composite bolted joints. A highly efficient explicit finite element model, which was validated effective and accurate by experiments, was developed and employed to conduct the virtual tests. Single-column and multi-column joints with various positions of missing fastener were considered. It is shown that the removal of fasteners can reduce the joint stiffness significantly, especially in joints with fewer columns or missing fasteners in the outside rows
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17

Wu, Chi-Chin, John Derek Demaree, Amanda Weerasooriya, Andres Bujanda, and Eric Jason Robinette. "Enhanced Interfacial Adhesion of Nylon 66 to Epoxy Resin EPON 825 by Non-thermal Atmospheric Pressure Dielectric Barrier Discharge Plasmas." Coatings 12, no. 7 (2022): 919. http://dx.doi.org/10.3390/coatings12070919.

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Poly(hexamethylene adipamide), nylon 66, is a popular plastic that requires high surface wettability and strong adhesive bonds for many applications. However, pristine nylon is difficult to bond due to its hydrophobic nature and poor surface wettability. The objective of this work was to modify the physio-chemical surface properties of nylon 66 via a novel atmospheric plasma surface treatment approach using oxygen (O2) or water vapor (H2O) plasma glow. The surface hydrophilicity of the plasma-treated nylon surface was substantially enhanced immediately after either helium (He)/H2O or He/O2 pla
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18

Garcia Freitas, Pedro, Luísa da Eira, Samuel Santos, and Mylene Farias. "On the Application LBP Texture Descriptors and Its Variants for No-Reference Image Quality Assessment." Journal of Imaging 4, no. 10 (2018): 114. http://dx.doi.org/10.3390/jimaging4100114.

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Automatic assessing the quality of an image is a critical problem for a wide range of applications in the fields of computer vision and image processing. For example, many computer vision applications, such as biometric identification, content retrieval, and object recognition, rely on input images with a specific range of quality. Therefore, an effort has been made to develop image quality assessment (IQA) methods that are able to automatically estimate quality. Among the possible IQA approaches, No-Reference IQA (NR-IQA) methods are of fundamental interest, since they can be used in most rea
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19

Mamiński, Mariusz Ł., Igor Novák, Matej Mičušík, Artur Małolepszy, and Renata Toczyłowska-Mamińska. "Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions." Materials 14, no. 13 (2021): 3672. http://dx.doi.org/10.3390/ma14133672.

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Poly(lactide) (PLA) films obtained by thermoforming or solution-casting were modified by diffuse coplanar surface barrier discharge plasma (300 W and 60 s). PLA films were used as hot-melt adhesive in joints in oak wood. It was demonstrated that lap shear strength increased from 3.4 to 8.2 MPa, respectively, for the untreated and plasma-treated series. Pull-off tests performed on particleboard for the untreated and treated PLA films showed 100% cohesive failure. Pull-off strength tests on solid oak demonstrated adhesion enhancement from 3.3 MPa with the adhesion failure mode to 6.6 MPa with th
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20

Palmieri, Barbara, Fabrizia Cilento, Eugenio Amendola, et al. "An Investigation of the Healing Efficiency of Epoxy Vitrimer Composites Based on Zn2+ Catalyst." Polymers 15, no. 17 (2023): 3611. http://dx.doi.org/10.3390/polym15173611.

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The need to recycle carbon-fibre-reinforced composite polymers (CFRP) has grown significantly to reduce the environmental impact generated by their production. To meet this need, thermoreversible epoxy matrices have been developed in recent years. This study investigates the performance of an epoxy vitrimer made by introducing a metal catalyst (Zn2+) and its carbon fibre composites, focusing on the healing capability of the system. The dynamic crosslinking networks endow vitrimers with interesting rheological behaviour; the capability of the formulated resin (AV-5) has been assessed by creep t
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21

Chae, Gyeong-Seok, Hee-Woong Park, Kiok Kwon, and Seunghan Shin. "Comparative Study of the Impact Wedge-Peel Performance of Epoxy Structural Adhesives Modified with Functionalized Silica Nanoparticles." Polymers 13, no. 3 (2021): 469. http://dx.doi.org/10.3390/polym13030469.

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Epoxy structural adhesives have strong adhesion, minimal shrinkage and high thermal and chemical resistance. However, despite these excellent properties, their high-energy impact resistance should be improved to satisfy the increasing demands of the automotive industry. For this reason, we used four types of silica nanoparticles with different surface groups, such as polydimethylsiloxane (PDMS), hydroxyl, epoxy and amine groups, as toughening agents and examined their effect on the glass transition temperature (Tg), crosslinking density and phase separation of epoxy structural adhesives. High-
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22

Liao, Michael E., Kenny Huynh, Lezli Matto, Dorian P. Luccioni та Mark S. Goorsky. "Optimization of chemical mechanical polishing of (010) β-Ga2O3". Journal of Vacuum Science & Technology A 41, № 1 (2023): 013205. http://dx.doi.org/10.1116/6.0002241.

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Smooth (< 0.5 nm rms) and subsurface damage-free (010) β-Ga2O3 was achieved with low-pressure chemical mechanical polishing. An applied pressure of 1 kPa along with colloidal silica and poromeric polyurethane polishing pads rotating at 30 rpm was found to be the optimal polishing parameters for (010) β-Ga2O3. Using higher pressures typically employed in the current literature induced subsurface damage in the substrates. Diffuse scatter intensity of triple-axis x-ray rocking curves was used to determine the presence of subsurface lattice damage, which was quantified by measuring peak widths
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23

Wical, Carol. "Matter Out of Place." M/C Journal 9, no. 5 (2006). http://dx.doi.org/10.5204/mcj.2673.

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 My title comes from anthropologist Mary Douglas’ assertion that dirt, when understood as “matter out of place” simultaneously implies both the existence and the contravention of an established order or system and that this in turn establishes dirt as symbolic (35). Further, Phyllis Palmer has written that dirt is “a principal means to arrange culture” (139). This paper suggests both that dirt has a function in cultural constructions of gender and that action films featuring a female protagonist provide a fertile site for investigation. Normative white femininity traditiona
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