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Self-Assembly of Block Copolymers by Solvent Vapor Annealing, Mechanism and Lithographic Applications

Xiaodan Gu2020-08-17ScholarWorks@UMassAmherst (University of Massachusetts Amherst)

Block copolymers (BCP) are a unique class of polymers, which can self-assemble into ordered microdomains with sizes from 3 nm to about 50 nm making BCPs an appealing meso-scale material. In thin films, arrays of BCP microdomains with long-range lateral order can serve as ideal templates or scaffolds for patterning nan…

Advanced Polymer Synthesis and CharacterizationBlock Copolymer Self-Assembly

Nanoparticles in 472 Human Cerebrospinal Fluid: Changes in Extracellular Vesicle Concentration and miR-21 Expression as a Biomarker for Leptomeningeal Metastasis

Kyue-Yim Lee、Ji Hye Im、Weiwei Lin 等 14 位作者2020-08-17Research Square

Abstract Background Leptomeningeal metastasis (LM) has a poor prognosis and is difficult to diagnose and predict the response of treatment. In this study, we suggest that the monitoring of changes in the concentration of extracellular vesicles in cerebrospinal fluid could help to diagnose or predict outcomes for LM. M…

Extracellular vesicles in diseaseNanoplatforms for cancer theranosticsMXene and MAX Phase Materials

Carbon Nanotubes for Hydrogen Purification and Storage

Pietro Bartocci、Giovanni Russo、Haiping Yang 等 9 位作者2020-08-17OpenAlex

Hydrogen storage and purification processes represent two key steps in hydrogen fuel production and supply chain, and for this reason they have a critical role in the development of the hydrogen economy. On one hand, the use of carbon membranes can help to overcome some disadvantages of the already commercial techniqu…

Supercapacitor Materials and FabricationHydrogen Storage and MaterialsMembrane Separation and Gas Transport

Calculated Exchange Interactions and Competing S=0 and S=1 States in Doped NdNiO2

Xiangang Wan、Vsevolod Ivanov、Giacomo Resta 等 5 位作者2020-08-17arXiv (Cornell University)

Using density functional based LDA+U method and linear-response theory, we study the magnetic exchange interactions of the superconductor Nd{1-x}Sr{x}NiO2. Our calculated nearest-neighbor exchange constant J1=82 meV is large, weakly affected by doping and is only slightly smaller than that found in the sister compound…

Physics of Superconductivity and MagnetismHigh-pressure geophysics and materialsMagnetic and transport properties of perovskites and related materials

Tuning the Thermal Stability and Photoisomerization of Azoheteroarenes through Macrocycle Strain

Sergi Vela、Alan Scheidegger、Raimón Fabregat 等 4 位作者2020-08-17ChemRxiv

Azobenzene and its derivatives are one of the most-widespread molecular scaffolds in a range of modern applications, as well as in fundamental research. After photoexcitation, azo-based photoswitches revert back to the most stable isomer in a timescale (t1/2) that determines the range of potential applications. Attemp…

Organic Electronics and PhotovoltaicsMolecular Junctions and NanostructuresPhotochromic and Fluorescence Chemistry

Chemical characterisation of benzene oxidation products under high and low NO x conditions using chemical ionisation mass spectrometry

Michael Priestley、Thomas J. Bannan、Michael Le Breton 等 23 位作者2020-08-17OpenAlex

Abstract. Aromatic hydrocarbons are a class of volatile organic compounds associated with anthropogenic activity and make up a significant fraction of urban VOC emissions that contribute to the formation of secondary organic aerosol (SOA). Benzene is one of the most abundant species emitted from vehicles, biomass burn…

Atmospheric chemistry and aerosolsAir Quality and Health ImpactsCatalytic Processes in Materials Science

Biosynthesis of Silver Nanoparticles from Acacia nilotica (L.) Wild. Ex. Delile Leaf Extract

Karishma I. Sheikh、Kalpesh B. Ishnava2020-08-17OpenAlex

Synthesis of nanoparticles from biological sources is a rapidly growing area in nanotechnology. The issue with the vast majority of the substance and physical strategies for silver nanoparticles (AgNPs) is that they are costly and can likewise include the utilization of lethal, perilous synthetic compounds, which may…

Nanoparticles: synthesis and applicationsBiodiesel Production and ApplicationsLaser-Ablation Synthesis of Nanoparticles

Silver Nanoparticles Protects Streptozotocin-induced Hepatotoxicity: a Biochemical and Histopathological Approach

Qudsia Begum、Tabassum Mahboob2020-08-17OpenAlex

Abstract Recently in many industries biologically synthesized silver nanoparticles are used as an alternative for their biomedicinal applications predominantly demonstrated as an effective agent in the diabetes treatment. On the other hand, oxidative stress crucially associated with the pathogenesis of diabetic comorb…

Nanoparticles: synthesis and applicationsNigella sativa pharmacological applicationsAnesthesia and Neurotoxicity Research

Bulk-corner correspondence of time-reversal symmetric insulators: deduplicating real-space invariants

Sander H. Kooi、Guido van Miert、Carmine Ortix2020-08-17arXiv (Cornell University)

The topology of insulators is usually revealed through the presence of gapless boundary modes: this is the so-called bulk-boundary correspondence. However, the many-body wavefunction of a crystalline insulator is endowed with additional topological properties that do not yield surface spectral features, but manifest t…

Graphene research and applicationsTopological Materials and PhenomenaAdvanced Condensed Matter Physics

Decoding the Kinetic Limitations of Plasmon Catalysis: The Case of 4-Nitrothiophenol Dimerization

Wouter Koopman、Radwan M. Sarhan、Felix Stete 等 5 位作者2020-08-17ChemRxiv

Plasmon-mediated chemistry presents an intriguing new approach to photocatalysis. However, the reaction enhancement mechanism is not well understood. In particular, the relative importance of plasmon-generated hot charges and photoheating are strongly debated. In this article, we evaluate the influence of microscopic…

Advanced Photocatalysis TechniquesGold and Silver Nanoparticles Synthesis and ApplicationsNanomaterials for catalytic reactions

Synthesis of Metallic and Metal Oxide Nanomaterials

Ayşe Demırbas、Tuna Karaytuğ、Nihan Arabacı 等 5 位作者2020-08-17OpenAlex

Materials in nano size called “nanomaterials” convey novel and enhanced properties based upon their size, shape, morphology, and component and have been intensively employed in a variety of scientific and industrial fields. Specifically, nanomaterials have been exposed to humans, plants, and animals, so toxicity of na…

Nanoparticles: synthesis and applicationsGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis

Surface Preparation for Structural Adhesive Joints

Anushka Purabgola、Shivani Rastogi、Gaurav Sharma 等 4 位作者2020-08-17OpenAlex

Advanced structures require materials that can provide high tensile strength, modulus, along with good load bearing capacity. Several structural adhesives provide good strength to joints made of different materials. The applications of structural adhesives range from domestic appliances to ships and aircraft along wit…

Surface Modification and SuperhydrophobicitySilicone and Siloxane ChemistryPhotopolymerization techniques and applications

Fabrication and Characterization of Copper Nanoparticles by Green Synthesis Approach Using Plectranthus Amboinicus Leaves Extract

Srividya Parthasarathy、Sanjana Jayacumar、Sudestna Chakraborty 等 8 位作者2020-08-17OpenAlex

Abstract The field of nanotechnology is gaining interest among the researchers towards the eco-friendly way of synthesis of nanoparticles. In this project, green synthesis technique was employed to induce the synthesis of copper nanoparticles using Plectranthus amboinicus, i.e. Mexican mint, identified as Coleus amboi…

Nanoparticles: synthesis and applications

Analysis of Green Methods to Synthesize Nanomaterials

Pavlos Nikolaidis2020-08-17OpenAlex

Nanoengineering shows promise for combining the electrochemical advantages of different materials, yielding composite designs with satisfactory performance in terms of safety and sustainability. Nanotechnology mainly involves the synthesis of nanoparticles distinguished by their size, shape, chemical composition, cont…

Advanced Photocatalysis TechniquesNanoparticles: synthesis and applicationsMicrobial Fuel Cells and Bioremediation

Nanomaterials

Zahra Vaseghi、Ali Nematollahzadeh2020-08-17OpenAlex

The present chapter represents comprehensive information regarding different types and classifications of nanomaterials including dimensionality-confined nanomaterials (e.g. zero-dimensional, one-dimensional, two-dimensional, and three-dimensional nanomaterials) and organic, inorganic, and hybrid nanomaterials. Top–do…

Nanoparticles: synthesis and applicationsCarbon and Quantum Dots ApplicationsGraphene and Nanomaterials Applications

100th Anniversary of Macromolecular Science Viewpoint: Piezoelectrically Mediated Mechanochemical Reactions for Adaptive Materials

Jorge Ayarza、Zhao Wang、Jun Wang 等 5 位作者2020-08-17ACS Macro Letters

Synthetic polymeric materials with adaptive capabilities triggered by mechanical stimuli could significantly extend their life cycle and boost performance. To achieve this, robust mechanically responsive chemistries must be developed. Piezoelectrically mediated chemistry is an emergent area of interest for this purpos…

Advanced Polymer Synthesis and CharacterizationPolymer composites and self-healingLuminescence and Fluorescent Materials

Recent Advances on Classification, Properties, Synthesis, and Characterization of Nanomaterials

Veer Singh、Priyanka Yadav、Vishal Mishra2020-08-17OpenAlex

Nanomaterials have an emerging application because of their unique chemical, physical, and biological properties. According to ISO and ASTM guidelines, the size of nanoparticles varies from 1 to 100 nm. The nanoparticles have one or more dimensions such as zero dimensions, one dimension, two dimensions, and three dime…

Nanoparticles: synthesis and applicationsGold and Silver Nanoparticles Synthesis and ApplicationsLaser-Ablation Synthesis of Nanoparticles

Fine Calcium Carbonate Production by CO2 Mineralization of Industrial Waste Brines

Dante Simonetti2020-08-17OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)

Calcium carbonate production via CO2 mineralization offers an attractive route for carbon capture and utilization. The process sequesters CO2 in a stable form of fine precipitated calcium carbonate, a high-value product with unit price in the range of $230-$280/t and a global market projected to reach 99 M tons in 202…

Drilling and Well EngineeringCalcium Carbonate Crystallization and InhibitionCO2 Sequestration and Geologic Interactions

Nucleation modalities in poly(lactide), poly(butylene succinate), and poly(ε‐caprolactone) ternary blends with partial wetting morphology

Seif Eddine Fenni、Jun Wang、N. Haddaoui 等 6 位作者2020-08-17Polymer Crystallization

Ternary biodegradable polymer blends of poly(lactic acid) (PLA), poly(butylene succinate) (PBS), and poly(ε-caprolactone) (PCL) with the composition 45/10/45 wt% and exhibiting partial-wetting morphology were prepared. In this morphology, the minor phase is present as self-assembled droplets at the co-continuous inter…

Bone Tissue Engineering MaterialsPolymer crystallization and propertiesbiodegradable polymer synthesis and properties