Relevant bibliographies by topics / Core-Shell Particle

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Core-Shell Particle'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Core-Shell Particle.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Core-Shell Particle"

1

Li, Ming Jue, Ying Yan Diao, and Xi Jun Liu. "Synthesis and Characterization of PBA/aPS Core-Shell Latex Particles." Advanced Materials Research 631-632 (January 2013): 588–91. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.588.

Full text
Abstract:
The core-shell structure copolymer of PBA/PS was prepared using pre-emulsion and semi-continues polymerization process. The particle size of core-shell latex and the St conversion of shell monomer were affected by emulsifier, initiator, pH and temperature etc. Meanwhile, the laser particle size analyzer, transmission electron microscope and other test methods were utilized to study latex particle average particle size, size distribution and morphological structure, respectively. The kinetics of polymerization was investigated. Well-defined core-shell structure and narrow particle sizedistribution could be achieved under starved conditions of monomer feeding. By the means of TEM found that PBA/PS latex particles had clearly core/shell morphology.
APA, Harvard, Vancouver, ISO, and other styles
2

Kantar, Ersin. "Dynamic calculations of the core/shell structured Ising-type endohedral fullerenes: The effect of core and core/shell interaction." Modern Physics Letters B 31, no. 33 (November 27, 2017): 1750307. http://dx.doi.org/10.1142/s0217984917503079.

Full text
Abstract:
In this study, we examine by comparing the dynamic magnetic and hysteretic properties of Ising-type endohedral fullerene (EF) with various dopant magnetic particles confined within a spherical cage. The model of EF X@C[Formula: see text] with X = spin-1/2, spin-1 and spin-3/2 is proposed to study the effect of the nature of core particle on the magnetic properties. The results were obtained by mean-field theory as well as Glauber-type stochastic dynamics, and focused on the response of thermal and hysteretic behaviors of systems. The system exhibits second- and first-order phase transitions. In three different core cases, the system also exhibits type-II superconductivity behavior with a dynamic hysteresis curves of the core. All results display magnetic properties of the EF which strongly depend on the nature of core particle. Moreover, core particle and core/shell (C–S) interaction are proposed as the basic factors affecting the magnetic properties of EF system.
APA, Harvard, Vancouver, ISO, and other styles
3

Inamoto, Shin, and Yuji Otsuka. "Energy-dispersive X-ray spectroscopy for an atomic-scale quantitative analysis of Pd–Pt core-shell nanoparticles." Microscopy 69, no. 1 (January 15, 2020): 26–30. http://dx.doi.org/10.1093/jmicro/dfz113.

Full text
Abstract:
Abstract The properties of core-shell nanoparticles, which are used for many catalytic processes as an alternative to platinum, depend on the size of both the particle and the shell. It is thus necessary to develop a quantitative method to determine the shell thickness. Pd–Pt core-shell particles were analyzed using scanning transmission electron microscopy (STEM) and energy-dispersive X-ray spectroscopy (EDX). Quantitative EDX line profiles acquired from the core-shell particle were compared to four core-shell models. The results indicate that the thickness of the Pt shell corresponds to two atomic layers. Meanwhile, high-angle annular dark-field STEM images from the same particle were analyzed and compared to simulated images. Again, this experiment demonstrates that the shell thickness was of two atomic layers. Our results indicate that, in small particles, it is possible to use EDX for a precise atomic-scale quantitative analysis.
APA, Harvard, Vancouver, ISO, and other styles
4

Ning, Na, Yiping Qiu, and Yi Wei. "Building effective core/shell polymer nanoparticles for epoxy composite toughening based on Hansen solubility parameters." Nanotechnology Reviews 10, no. 1 (January 1, 2021): 1183–96. http://dx.doi.org/10.1515/ntrev-2021-0077.

Full text
Abstract:
Abstract Particles have been demonstrated to toughen epoxy resins, especially for fiber-reinforced epoxy composites, and core/shell particles are one of them. It is known that not all particles toughen the same but most evaluations are through experimentation, and few studies have been conducted to accurately predict the particles’ toughening effect or guide the design of effective particles. In this study, efforts were made to find the control factors of core/shell particles, primarily interfacial compatibility and degree of dispersion, and how to predict them. Nanocomposites were fabricated by incorporating core/shell nanoparticles having various shell polymer compositions, especially their polarities. Their compatibility was estimated using a novel quantitative approach via adopting the theory of Hansen solubility parameters (HSP), in which the HSP of core/shell nanoparticles and the epoxy matrix were experimentally determined and compared. It was found that the HSP distance was a good predictor for particle dispersion and interfacial interaction. Particles having a small HSP distance (R a) to the epoxy resin, represented by the polybutylacrylate core/polymethyl methacrylate shell particle having the smallest R a of 0.50, indicated a uniform dispersion and strong interfacial bonding with the matrix and yielded outstanding toughening performance. In contrast, polybutylacrylate core/polyacrylonitrile shell particle having the largest HSP distance (6.56) formed aggregates and exhibited low interfacial interaction, leading to poor toughness. It was also demonstrated that HSP can provide an effective strategy to facilitate the design of effective core/shell nanoparticles for epoxy toughening.
APA, Harvard, Vancouver, ISO, and other styles
5

CHOI, H. J., M. S. CHO, and I. S. LEE. "ELECTRORHEOLOGY OF MONODISPERSE CORE/SHELL STRUCTURED PARTICLE SUSPENSIONS." International Journal of Modern Physics B 19, no. 07n09 (April 10, 2005): 1077–82. http://dx.doi.org/10.1142/s0217979205029882.

Full text
Abstract:
As a novel candidate of electrorheological (ER) material, core/shell composite particles (PAPMMA) of poly(methyl methacrylate) (PMMA) core and polyaniline (PANI) shell were prepared and adopted as a dispersed phase. PAPMMA particles, obtained by a dispersion polymerization method, were spherical and possessed a monodisperse particle size distribution, in which the PANI shell was introduced on the surface of PMMA via an in-situ polymerization of aniline by adding an oxidant in an aqueous acidic solution. Yield stress of the PAPMMA suspensions under an applied electric field was observed to be increased with a particle size. In addition, monodisperse acrylic microspheres with aniline moiety on the surface were prepared by a seeded emulsion method, and then composite particles possessing chemically bonded PANI shell (PA-PGMA) were prepared via an in-situ polymerization of aniline. Their ER characteristics were also examined.
APA, Harvard, Vancouver, ISO, and other styles
6

Xu, Xue Feng, H. F. Chen, H. T. Ma, B. X. Ma, and Wei Peng. "The Mechanism of Polymer Particles in Silicon Wafer CMP." Materials Science Forum 626-627 (August 2009): 231–36. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.231.

Full text
Abstract:
In order to increase the material removal rate of silicon wafer, composite abrasives slurry was used in CMP. Zeta potential of polymer particle was measured and interaction potential energy between silica abrasives and polymer particles in slurry were analyzed and calculated. Adsorptions between silica abrasives and polymer particles were observed with TEM. CMP experiments had been taken to analyze the effects of polishing parameters (the concentration of colloidal silica and polymer particle, the pressure and the speed of polishing) on the material removal rate. The mechanism of polymer particle in polishing was elaborated. Experimental results indicated that PS, PMMA and BGF polymer particles could adsorb silica abrasives in slurry. Silica shell/PS core, silica shell/PMMA core and silica shell/BGF core particles could be used to formulate composite abrasives slurries. The material removal rate with composite abrasives slurry was higher than that of single abrasive slurry. The maximum material removal rate was obtained with silica shell/BGF core composite abrasives slurry.
APA, Harvard, Vancouver, ISO, and other styles
7

Li, Xin, Kao-Hsiang Liu, Bin Wu, Luis Enrique Sanchez-Diaz, Gregory S. Smith, and Wei-Ren Chen. "Scattering functions of yolk–shell particles." Journal of Applied Crystallography 46, no. 6 (October 11, 2013): 1551–57. http://dx.doi.org/10.1107/s0021889813022917.

Full text
Abstract:
The single-particle small-angle scattering properties of the yolk–shell particle, a new type of core–shell particle with a mobile core within the hosting shell, are systematically investigated. The Debye spatial autocorrelation function, pair distance distribution function and intraparticle structure factor (form factor) are calculated and compared with the corresponding scattering functions of reference systems of hard sphere and concentric core–shell particles with identical sizes. On the basis of these theoretical calculations, it is found that the broken centrosymmetry, originating from the mobility of the trapped yolk, results in an imaginary scattering amplitude. As a result, it contributes an additional destructive interference term which smears certain features present in the scattering functions of the reference systems. These theoretical models raise the prospect of jointly using small-angle neutron and X-ray scattering techniques to quantitatively determine the structural characteristics of yolk–shell particles.
APA, Harvard, Vancouver, ISO, and other styles
8

Yano, Kazuhisa, Tadashi Nakamura, Hiroshi Nozaki, Noritomo Suzuki, and Yuusuke Akimoto. "Synthesis of Highly Monodispersed Core/Shell Mesoporous Silica Spheres." Advances in Science and Technology 45 (October 2006): 814–18. http://dx.doi.org/10.4028/www.scientific.net/ast.45.814.

Full text
Abstract:
Particle size development of monodispersed mesoporous silica spheres (MMSS) was investigated by laser scattering measurement, TEM and XRD in situ. Smaller particles suddenly appeared after the commencement of the experiment, then growing homogeneously to larger particles. It is assumed that residual silica precursors in solution preferentially reacted with existing particle surface silanol, preventing generation of new particles. This leads to the formation of monodispersed particles. Based on the mechanism, monodispersed mesoporous silica spheres with core/shell structure have been newly synthesized.
APA, Harvard, Vancouver, ISO, and other styles
9

Jia, Guobin, Jonathan Plentz, Ingmar Höger, Jan Dellith, Andrea Dellith, and Fritz Falk. "Core–shell diodes for particle detectors." Journal of Physics D: Applied Physics 49, no. 6 (January 15, 2016): 065106. http://dx.doi.org/10.1088/0022-3727/49/6/065106.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lin, King-Fu, and Yow-Der Shieh. "Core-shell particles designed for toughening the epoxy resins. II. Core-shell-particle-toughened epoxy resins." Journal of Applied Polymer Science 70, no. 12 (December 19, 1998): 2313–22. http://dx.doi.org/10.1002/(sici)1097-4628(19981219)70:12<2313::aid-app2>3.0.co;2-p.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Core-Shell Particle"

1

Khaleque, Tasnuva. "Modelling and experimental study of toughening mechanisms of core-shell rubber particle- and nanosilica particle-modified epoxy polymers." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/62639.

Full text
Abstract:
Epoxies are high performance thermosetting polymers widely used in many engineering applications as structural adhesives, coatings and matrices of fibre reinforced polymer composites. They possess exceptional mechanical properties, chemical resistance and high temperature properties. However, the highly cross-linked epoxy networks, are brittle, and epoxies need toughening for engineering applications. This work presents the mechanical properties, fracture performance and toughening mechanisms of an anhydride cured epoxy polymer modified by different combinations of preformed core-shell rubber particles (CSR) and hybrid CSR-nanosilica particles. Two types of CSR particles, with nominal diameters of 100 nm and 300 nm, and nanosilica particles with a diameter of 20 nm were used. The Young's modulus of the epoxy decreased with the increasing weight percentage of CSR particles, but increased with the addition of the nanosilica particles. Both the compressive modulus and yield stress decreased with the increasing CSR particle content; however, the addition of nanosilica led to an increase of the compressive modulus, while the yield stress remained unchanged. The glass transition temperature of the unmodified epoxy was 159 °C and this was unchanged by the addition of the CSR particles or the nanosilica particles. The fracture energy increased from 78 J/m2 for the unmodified epoxy to 530 J/m2 with an addition of 9 wt% of the small CSR particles, this was further enhanced by the addition of the nanosilica particles. The hybrid toughening effect observed was additive, and no synergy was observed. A reactive diluent was added to further enhance the fracture toughness of the particle modified epoxies, and a synergistic toughening effect was observed. The toughening mechanisms identified were the cavitation of the CSR particles followed by plastic void growth in the epoxy matrix and shear band yielding of the epoxy induced by both the CSR and the nanosilica particles. The increases in toughness were successfully predicted using an analytical model. The fracture performances of carbon fibre reinforced polymer composites with matrices of the toughened epoxies were investigated. A complete transfer of toughness from the bulk epoxies to the fibre composites was observed. The toughening mechanisms of the modified epoxies were also investigated through non-linear finite element analyses. A two-dimensional plane strain elastic plastic model was developed to study the shear band yielding mechanism of the CSR modified and the hybrid modified epoxies. The model predicted that the CSR particle size has no significant effect on the shear band yielding mechanism and verified the contribution of the nanosilica particles to the shear band yielding of the hybrid epoxy. The toughening mechanism of the nanosilica particles was studied using a two-dimensional axisymmetric unit-cell model of nanosilica-embedded epoxy under triaxial loading, considering an elastic-plastic response for the epoxy and cohesive interaction between the nanosilica and the epoxy matrix. The model predicted that there is significant plastic deformation of the epoxy before it debonds from the nanosilica.
APA, Harvard, Vancouver, ISO, and other styles
2

Hanga, Mariana P. "Controlled particle production by membrane emulsification for mammalian cell culture and release." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14922.

Full text
Abstract:
Existing commercially available microcarriers are very efficient at encouraging cell attachment and proliferation. However, recovery of the cells is problematic as it requires the use of proteolytic enzymes which are damaging to critical cell adhesion proteins. From this perspective, temperature responsive polymers appear to be a valid option. The current innovative study is to produce and engineer microcarriers in terms of particle size, surface coating and properties, as well as thermo-responsiveness for cell release. All these benefits are based on particle production by membrane emulsification to provide a highly controlled particle size. The polymer of choice is poly N-isopropylacrylamide (pNIPAM) because of the sharpness of its phase transition, biocompatibility and transition temperature close to the physiological value. These characteristics make pNIPAM a very attractive material for Tissue Engineering applications. Cells are cultured on the hydrophobic surface at 37??C and can be readily detached without using proteolytic enzymes from the surface by lowering the temperature to room temperature. The Dispersion Cell (MicroPore Technologies Ltd, UK) was successfully employed for the production of W/O emulsions. The generated monomer droplets were additionally solidified by applying a free radical polymerisation to manufacture solid pNIPAM microspheres. Additionally, calcium alginate particles were also generated and further functionalised with amine terminated pNIPAM to form temperature responsive core-shell particles by simply taking advantage of the electrostatic interactions between the carboxyl groups of the alginate and amino groups of the modified pNIPAM. Controlled particle production was achieved by varying process parameters and changing the recipe formulation (e.g. monomer concentration, surfactant concentration, pore size and inter-pore spacing, injection rate, shear stress applied at the membrane s surface). The manufactured particles were then analysed in terms of particle size and size distribution, chemical composition, surface analysis, shrinkage ratio and thermo-responsiveness and further sterilised and used for cell culture and release experiments. Swiss Albino 3T3 fibroblastic cells (ATCC, USA) were utilised to show proof-of-concept for this technology. Cell attachment and proliferation were assessed and successfully demonstrated qualitatively and quantitatively. pNIPAM solid particles, uncoated and with different protein coatings were shown to allow a limited degree of cell attachment and proliferation compared to a commercially available microcarrier. On a different approach, uncoated core-shell structures demonstrated improved capabilities for cell attachment and proliferation, similar to commercially available microcarriers. Having in mind the potential of temperature responsive polymers and the aim of this innovative study, cell detachment from the generated microcarriers was evaluated and compared to a commercially available temperature responsive surface. Necessary time for detachment was recorded and detached cells were recovered and reseeded onto tissue culture plastic surfaces in order to evaluate the replating and reattachment capabilities of the recovered cells. Successful cell detachment was achieved when using the core-shell structures as cell microcarriers, but the necessary time of detachment was of an order higher than that for the commercial temperature responsive surface.
APA, Harvard, Vancouver, ISO, and other styles
3

Tungchaiwattana, Somjit. "A study of particle structure and film formation mechanism on the mechanical properties of synthetic rubber films." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/a-study-of-particle-structure-and-film-formation-mechanism-on-the-mechanical-properties-of-synthetic-rubber-films(3014e013-bc99-4fbf-8282-5d13ed4251b3).html.

Full text
Abstract:
This thesis investigated a new group of poly(Bd)/poly(Bd-co-MAA) core-shell particles that were ionically crosslinked and cast as nanostructured ionomer films from aqueous dispersions. The new group of poly(Bd)/poly(Bd-co-MAA) core-shell particles were studied for structure-property relationships and morphology. The covalent crosslinking content in the core and the shell were varied at constant ionic crosslinking. Stress-strain data showed control of the nanostructured films. The chain transfer agent used during the preparation of the nanoparticles core-shells was shown to independently tune the mechanical properties of the films.
APA, Harvard, Vancouver, ISO, and other styles
4

Fujiwara, Atsushi. "Controlling Adsorption Properties of Metal-Organic Framework Particles through Synthesis Protocols." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263694.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Klingler, Andreas [Verfasser], and Ulf [Akademischer Betreuer] Breuer. "Morphology and Fracture of Block Copolymer and Core-Shell Rubber Particle Modified Epoxies and their Carbon Fibre Reinforced Composites / Andreas Klingler ; Betreuer: Ulf Breuer." Kaiserslautern : Technische Universität Kaiserslautern, 2021. http://d-nb.info/1233286382/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hain, Jessica. "Funktionalisierte Polymerkomposite auf Basis von Poly(3,4-ethylendioxythiophen) und Gold." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1209477679749-98205.

Full text
Abstract:
Poly(3,4-ethylenedioxythiophene), PEDOT, belongs to the group of conducting polymers and is characterized by its high stability, a moderate band gap and its optical transparency in the conductive state. A large disadvantage of conducting polymers, and also PEDOT, is their poor solubility. One way to achieve processible materials is the synthesis of colloidal particles. Thus, this work focuses on the development of conductive particles by preparing composite structures. Polymeric colloids like latex particles and microgels were used as templates for the oxidative polymerization of EDOT. Depending on template structure completely different composite morphologies with variable properties were obtained. It was found that modification with PEDOT did not only cause conductive particles for application as humidity sensor materials, but also candidates for further functionalization with gold nanoparticles (Au-NPs). Due to a multi-stage synthesis route it was possible to achieve polystyrene(core)-PEDOT(shell)-particles decored with Au-NPs. Microgels acting as “micro reactors” for the incorporation of PEDOT and Au-NPs were also used for preparing multifunctional composites for catalytic applications
Poly(3,4-ethylendioxythiophen), PEDOT, gehört zur Gruppe der leitfähigen Polymere und zeichnet sich durch seine hohe Stabilität, eine moderate Bandlücke und seine optische Transparenz im dotierten Zustand aus. Ein Nachteil leitfähiger Polymere, wie auch von PEDOT, ist deren schlechte Löslichkeit. Die Synthese kolloidaler Partikel bietet jedoch eine Möglichkeit dieses Problem zu umgehen. In diesem Zusammenhang richtete sich der Fokus dieser Arbeit auf die Darstellung leitfähiger Partikel in Form von Kompositstrukturen. Polymerkolloide, wie Latex- und Mikrogelpartikel, sind als Template eingesetzt worden, in deren Gegenwart PEDOT durch eine oxidative Polymerisation synthetisiert wurde. In Abhängigkeit von der Struktur des Templats sind unterschiedliche Kompositmorphologien mit steuerbaren Eigenschaften erhalten worden. Auf diese Weise wurden neben Materialien für die Feuchtigkeitssensorik leitfähige Kompositpartikel hergestellt, die zusätzlich mit Gold-Nanopartikeln (Au-NP) funktionalisiert werden konnten. Durch ein mehrstufiges Syntheseverfahren sind somit Polystyrol(Kern)-PEDOT(Schale)-Partikel mit Au-NP-funktionalisierter Oberfläche synthetisiert worden. Mikrogelpartikel, die als „Mikroreaktoren“ für die Inkorporation von PEDOT- und Au-NP dienten, wurden ebenfalls eingesetzt, um multifunktionale Komposite mit katalytischen Eigenschaften herzustellen
APA, Harvard, Vancouver, ISO, and other styles
7

Sarma, Dominik Arun. "Modular Hybrid Architectures for Single Particle-based Analytical Assays." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/22055.

Full text
Abstract:
Globale Megatrends erfordern immer flexiblere analytische Messmethoden und Assays. Insbesondere im Umwelt-, Agrar-, Lebensmittel- und Gesundheitssektor sind chemische Assays hier eine geeignete Wahl. Eine Vielzahl solcher Assays steht in akademischen und industriellen Bereichen zur Verfügung. Die Anpassung an neue Verbindungen hingegen ist oft schwierig zu realisieren, da der einzelne Test meist für einen spezifischen Analyten konzipiert ist. Eine modulare, analytische Plattform für die Entwicklung chemischer Assays ist daher sehr wünschenswert. Ein solches System sollte die Möglichkeit einer schnellen und flexiblen Implementierung verschiedener Erkennungstypen für neue Analyten und die Möglichkeit einer Multiparameter-(Multiplex-)Bestimmung in einem robusten und portablen Auslesegerät beinhalten. Einzelpartikel-basierte, chemische Assays haben sich hier als geeignete Lösung erwiesen. In dieser Arbeit stelle ich Polystyrol-Kern-Silikat-Schale-Partikel als modulare, hybride Plattform für die flexible Konfiguration von Einzelpartikel-basierten chemischen Assays vor. Zunächst wurde ein Verfahren entwickelt, das den Zugang zu verschiedenen-Partikelarchitekturen ermöglicht. Diese Partikel wurden für den DNA-Nachweis bis in den fmol-Bereich getestet (Kapitel 2). Ein neues Werkzeug zur Bestimmung der Rauheit der Partikel aus elektronenmikroskopischen Bildern wurde entwickelt und auf das breite Spektrum der im Projekt hergestellten SiO2@PS-Partikel angewendet (Kapitel 3). Damit soll die Grundlage zur Vergleichbarkeit zwischen zukünftigen Partikelcharakterisierungen geschaffen werden. Schließlich wurde ein Multiplex-Assay mit farbstoffkodierten, Protein-abweisenden Partikeln entwickelt, um kleine Moleküle durch immunochemische Reaktionen in einem waschfreien Verfahren nachzuweisen (Kapitel 4). Letzteres verdeutlicht, dass eine hohe analytische Leistung mit neuem Potenzial an flexibler Funktionalität durch die Verwendung hybrider SiO2@PS-Partikel kombiniert werden kann.
Global megatrends such as demographic change, personalization, climate change or urbanization demand for increasingly flexible and mobile analytical measurement methods and assays. Especially in the environmental, agricultural, food and health sectors, chemical assays are a suitable choice. A large variety of such assays is available in the academic and industry area. However, their modification to measure new compounds is time-consuming and laborious, because they are typically designed to detect a specific single analyte. A modular platform for chemical assay development is thus highly desirable. Such a system should include the possibility for fast, easy and flexible implementation of various recognition types towards emerging analytes and the possibility for multi-parameter (multiplexed) detection in a potentially portable fashion. Single particle-based assays have proven to be an adequate solution here. In this work, I present hybrid polystyrene core-silica shell (SiO2@PS) particles as new spherical substrates for the flexible configuration of single particle-based chemical assays. First, a procedure to control the surface topology of the beads was developed, giving access to smooth, raspberry-like or multilayer-like CS structures. These particles were used for DNA detection down to the fmol-level (Chapter 2). A new tool to extract the roughness of the particles from electron microscopy images was developed next and applied to the wide range of CS beads prepared throughout the project (Chapter 3). This general protocol provides the basis for the comparability of future CS particle characterization. Finally, a multiplex assay with dye-encoded beads with non-fouling surfaces was developed to detect small molecules via immunochemical reactions in a wash-free procedure (Chapter 4). The latter ultimately proves that hybrid CS particles can combine high analytical performance and unmatched potential for flexible functionality.
Suspension Array Technology
APA, Harvard, Vancouver, ISO, and other styles
8

Khan, Ikram Ullah. "Microfluidic-assisted synthesis and release properties of multi-domain polymer microparticles drug carriers." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF042/document.

Full text
Abstract:
Les caractéristiques et les propriétés de libération de microparticules chargées de médicament dépendent de la nature des matériaux employés, des propriétés physicochimiques des microparticules, du choix de la méthode de production, et enfin des propriétés des molécules encapsulées. A l'inverse de la plupart des méthodes conventionnelles, les méthodes microfluidiques présentent l’avantage de bien mieux contrôler la génération de gouttelettes, leur taille et leur distribution de tailles. Ainsi des dispositifs microfluidiques à base de capillaires ont été développés pour obtenir des microbilles de polymère mais également des microparticules de type janus, coeur-écorce ou troyenne, toutes monodisperses en taille et chargées de médicament(s). Ces particules ont été produites à partir de solutions de monomère qui furent polymérisées par irradiations UV de telle sorte à garder intacte l'activité des molécules chargées. Ces dispositifs peuvent être assemblés dans un court laps de temps et un simple changement dans leur conception permet d’obtenir des morphologies de particules très différentes. Ces particules ont été développées dans le but de résoudre les problèmes rencontrés dans l’administration orale de médicaments. Par exemple les microbilles peuvent être utilisées pour délivrer des anti-inflammatoires non stéroïdiens de manière continue tandis que les particules Janus peuvent libérer, simultanément et sur le même site, deux principes actifs possédant des propriétés complètement différentes (solubilité, compatibilité) également de manière prolongée. Quant aux particules coeur-écorce, elles ont été conçues pour cibler la région du côlon de l'intestin humain, et y libérer simultanément deux médicaments. Les particules troyennes furent synthétisées à l’aide d’un procédé microfluidique semi-continu qui a permis une manipulation plus sécurisée des nanoparticules vectrices ainsi que la libération continue d’un médicament dans un liquide gastrique simulé. Chaque système a été entièrement caractérisé pour assurer l’invariance entre lots et la reproductibilité. En général, la libération des ingrédients actifs a pu être facilement contrôlée/ajustée par le réglage des paramètres opératoires et de matériaux tels que les débits des différentes phases, la nature et la concentration du médicament, des (co)monomères, des agents tensioactif et de réticulation, le pH du milieu de libération. Ces différents paramètres influencent les propriétés des microparticules telles que leur morphologie, forme, taille et densité de réticulation du réseau polymère
Characteristics and release properties of drug loaded microparticles depend upon material used and choice of production method. Conversely to most of the conventional ones, microfluidic methods give an edge by improving the control over droplet generation, size and size distribution. Capillary-based microfluidic devices were successfully used to obtain monodisperse drug(s) loaded microbeads, janus, core-shell and trojan particles using UV initiated free radical polymerization while keeping activity of active loaded molecules. These devices can be assembled in a short period of time and a slight change in design gives completely different microparticles morphologies. These particles were developed with the aim to address different issues experienced in oral drug delivery. For instance microbeads can be used to deliver NASIDs in a sustained release manner while janus particles can release two APIs with completely different properties (solubility, compatibility) also in a sustained release manner. Core-shell particles were designed to target colonic region of human intestine for dual drug delivery. Trojan particles were synthesized in a new semi-continuous microfluidic process, thus improving nanoparticles safety handling and release in simulated gastric fluid. Each system was fully characterized to insure batch to batch consistency and reproducibility. In general, the release of active ingredients was controlled by tuning the operating and material parameters like phases flow rates, nature and concentration of drug, (co)monomers, surfactant and crosslinker, pH of release media with the result of different particle morphologies, sizes and shapes or matrix crosslinking density
APA, Harvard, Vancouver, ISO, and other styles
9

Zhou, Xiamo. "OSTE Microfluidic Technologies for Cell Encapsulation and Biomolecular Analysis." Doctoral thesis, KTH, Mikro- och nanosystemteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217995.

Full text
Abstract:
In novel drug delivery system, the encapsulation of therapeutic cells in microparticles has great promises for the treatment of a range of health con- ditions. Therefore, the encapsulation material and technology are of great importance to the validity and efficiency of the advanced medical therapy. Several unsolved challenges in regards to versatile microparticle synthesis ma- terials and methods form the main obstacle for a translation of novel cell therapy concepts from research to clinical practice. Thiol-ene based polymer systems have emerged and gained great popular- ity in material development in general and in biomedical applications specif- ically. The thiol-ene platform is broad and therefore of interest for a variety of applications. At the same time, many aspects of this material platform are largely unexplored, for example material and manufacturing technology developments for microfluidic applications . In this Ph.D. thesis, thiol-ene materials are explored for use in cell encap- sulation. The marriage of these two technology fields breeds the possibility for a novel microfluidic cell encapsulation approach using a novel encapsulation material. To this end, several new manufacturing technologies for thiol-ene and thiol-ene-epoxy droplet microfluidic devices were developed. Moreover, core-shell microparticle synthesis for cell encapsulation based on a novel co- synthesis concept using a thiol-ene based material was developed and inves- tigated. Finally, a thiol-ene-epoxy system was also used for the formation of microwells and microchannels that improve protein analysis on microarrays. The first part of the thesis presents the background and state-of-the-art technologies in regards to cell therapy, microfluidics, and thiol-ene based ma- terials. In the second part of the thesis, a novel manufacturing approach of thiol-ene-epoxy material as well as core-shell particle co-synthesis in micro- fluidics using thiol-ene based material are presented and characterized. The third part of the thesis presents the cell viability studies of encapsulated cells using the novel encapsulation material and method. In the final part of the thesis, two applications of thiol-ene-epoxy gaskets for protein detection mi- croarrays are presented.
Inkapsling av levande celler i mikrokapslar för terapeutiska ändamål är mycket lovande för frmatida behandling av många olika sjukdomar. Emeller- tid är en behandlings effektivitet i hög grad beroende av vilka material som används för inkapsling och vilken teknisk lösning som används för att ska- pa mikrokapslarna. För närvarande återstår det många utmaningar för att omvandla grundforskningresultat till klinisk verklighet, vilken kräver mer än- damålsenliga tillvägagångssätt för att tillverka mikrokapslar i material som är kompatibla med användningsområdena. De senaste åren har tiol-en baserade polymerer har blivit mycket använda för materialutveckling i stort och för biomedicinska tillämpningar i synnerhet. Med tiol-en kemi kan en mycket stor mängd helt olika syntetiska material framställas, vilket gör tiol-ener intressanta för en mängd applikationer. För närvarande är dock mycket inom denna materialklass outforskat, t.ex. inom material och tillverkningmetodik för mikrofluidiktillämpningar. I denna avhandling används tiol-ener för cellinkapsling. Sammanslagning av dessa teknologier möjliggör en ny typ av cellinkapsling med nya materi- alegenskaper. En mängd olika tillverkningssätt där tiol-en eller tiol-en-epoxi används för droplet-mikrofluidiksystem utvecklades. Core-shell mikrokapsel- syntes för cell-inkapsling baserat på en ny metod för samtidig syntes av både core och shell utvecklades och karaktäriserades. Slutligen utvecklades ett tiol- en-epoxi system för enkel integrering med proteinmikroarrayer på objektsglas. I avhandlingens första del presenteras bakgrund och dagens bästa teknolo- gier för terapeutisk cellinkapsling, mikrofluidik och tiol-en baserade material. I avhandlingens andra del presenteras en ny tillverkningsmetod för mikro- strukturerade tiol-en-epoxi artiklar och samtidig syntes av core och shell för mikrokapslar med användande av mikrofluidik. I den tredje delen presenteras cellöverlevandsstudier för de celler som inkapslats med de nya materialen och de nyutvecklade metoderna. I den avslutande delen beskrivs två specifika fall där tiol-en-epoxi komponenter används för proteindetektion och mikroarrayer.

QC 20171122

APA, Harvard, Vancouver, ISO, and other styles
10

Etmimi, Hussein Mohamed. "Hydrophobic core/shell particles via miniemulsion polymerization." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019/539.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Core-Shell Particle"

1

Buscaglia, Vincenzo, and Maria Teresa Buscaglia. "Core-Shell Heterostructures: From Particle Synthesis to Bulk Dielectric, Ferroelectric, and Multiferroic Composite Materials." In Nanoscale Ferroelectrics and Multiferroics, 72–99. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118935743.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Han, Fei, Junzhi Cui, and Yan Yu. "Prediction for Mechanical Properties of Core-Shell Particle-filled Polymers via Statistical Two-Scale Method." In Computational Mechanics, 302. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75999-7_102.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Musyanovych, Anna, and Katharina Landfester. "Core-Shell Particles." In Macromolecular Engineering, 1209–47. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527631421.ch29.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ruckenstein, Eli, Hangquan Li, and Chong Cheng. "Core-Shell Latex Particles." In Concentrated Emulsion Polymerization, 87–88. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2018.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429026577-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Kawaguchi, Haruma. "Core-Shell Particles with a Temperature-Sensitive Shell." In Hydrogel Micro and Nanoparticles, 63–80. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527646425.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Yun, Yang, Hangquan Li, and Eli Ruckenstein. "Hydrophobic Core/Hydrophilic Shell Amphiphilic Particles *." In Concentrated Emulsion Polymerization, 128–38. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2018.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429026577-12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Litchfield, William J. "Shell-Core Particles for Turbidimetric Immunoassays." In Nonisotopic Immunoassay, 403–13. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-5466-6_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Spasova, M., and M. Farle. "Magnetism of Monodisperse Core/Shell Particles." In Low-Dimensional Systems: Theory, Preparation, and Some Applications, 173–92. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0143-4_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Sun, Tianying, and Feng Wang. "Lanthanide-Doped Core–Shell Upconversion Nanophosphors." In Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications, 289–309. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1590-8_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ruhl, T., P. Spahn, H. Winkler, and G. P. Hellmann. "Colloidal crystals from core-shell latex spheres by compression molding." In Mesophases, Polymers, and Particles, 82–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b100307.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Core-Shell Particle"

1

Chvátal, Lukáš, Martin Šiler, and Pavel Zemánek. "Metallic Core-shell particle in a standing wave." In 18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, edited by Jan Peřina, Libor Nozka, Miroslav Hrabovský, Dagmar Senderáková, Waclaw Urbańczyk, and Ondrej Haderka. SPIE, 2012. http://dx.doi.org/10.1117/12.2008210.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

CHOI, H. J., M. S. CHO, and I. S. LEE. "ELETRORHEOLOGY OF MONODISPERSE CORE/SHELL STRUCTURED PARTICLE SUSPENSIONS." In Proceedings of the Ninth International Conference. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812702197_0003.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sun, Qiang, Kishan Dholakia, and Andrew D. Greentree. "Optical Force on Asymmetric Au@SiO2 Core-Shell Particle." In Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/cleopr.2020.c4e_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Yang, Huan, Jinyou Shao, and Ben Q. Li. "Self-Assembly of Ordered SiO2@Au Core-Shell Nanoparticle Arrays." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36539.

Full text
Abstract:
This paper presents a wet-based self-assembly process for nano-fabricating 1-D arrays of spherical nanoparticles and/or gold-nanoshells with controllable inter-particle distance for near infrared optical communications and for plasmon polariton waveguides featured with the lateral mode size below the optical diffraction limit. The process entails two main procedures. First, the SiO2 nanoparticle colloidal solution was restricted to flow through the gap between the patterned substrate and the cover slip, and the particles, trapped in the patterned, recessed regions, self-assembled to form closely arranged SiO2 particle arrays. These SiO2 particle arrays then acted as a template with which SiO2@Au nanoshell particle arrays of interest with desirable interparticle distance were obtained by repeating the above procedure with SiO2@Au dispersed solution. The needed high quality SiO2@Au core-shell nanoparticles with tunable surface plasma resonance also were synthesized in our laboratory using the seed-and-grow method. Results show that, with this method, the interparticle distance of the nanoshell particle arrays can be controlled by a proper selection of the patterned groove and the sizes of SiO2 and SiO2@Au nanoshell particles. As demonstrated by experiment, the method is general and can be applied to obtain nanoparticle particle arrays of other materials with controllable distance.
APA, Harvard, Vancouver, ISO, and other styles
5

Stetcu, Ionel, Livius Trache, and Sabin Stoica. "No-Core Shell Model as an Effective Theory." In EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (II): Proceedings of the Carpathian Summer School of Physics 2007. AIP, 2008. http://dx.doi.org/10.1063/1.2870453.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Vary, J. P., P. Maris, A. Negoita, P. Navrátil, V. G. Gueorguiev, W. E. Ormand, A. Nogga, et al. "Elements of the ab initio No Core Shell Model." In EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (II): Proceedings of the Carpathian Summer School of Physics 2007. AIP, 2008. http://dx.doi.org/10.1063/1.2870419.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Khandhar, A. P., R. M. Ferguson, H. Arami, and K. M. Krishnan. "Physical and biological optimization of core-shell nanoparticle tracers for in vivo MPI." In 2013 International Workshop on Magnetic Particle Imaging (IWMPI). IEEE, 2013. http://dx.doi.org/10.1109/iwmpi.2013.6528377.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Hwang, Ho-Sang, Bum-Kyoung Seo, and Kune-Woo Lee. "Strippable Core-Shell Polymer Emulsion for Decontamination of Radioactive Surface Contamination." In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2010. http://dx.doi.org/10.1115/icem2010-40193.

Full text
Abstract:
In this study, the core-shell composite polymer for decontamination from the surface contamination was synthesized by the method of emulsion polymerization and blends of polymers. The strippable polymer emulsion is composed of the poly(styrene-ethyl acrylate) [poly(St-EA)] composite polymer, poly(vinyl alcohol) (PVA) and polyvinylpyrrolidone (PVP). The morphology of the poly(St-EA) composite emulsion particle was core-shell structure, with polystyrene (PS) as the core and poly(ethyl acrylate) (PEA) as the shell. Core-shell polymers of styrene (St)/ethyl acrylate (EA) pair were prepared by sequential emulsion polymerization in the presence of sodium dodecyl sulfate (SDS) as an emulsifier using ammonium persulfate (APS) as an initiator. Related tests and analysis confirmed the success in synthesis of composite polymer. The products are characterized by FT-IR spectroscopy, TGA that were used, respectively, to show the structure, the thermal stability of the prepared polymer. Two-phase particles with a core-shell structure were obtained in experiments where the estimated glass transition temperature and the morphologies of emulsion particles. Decontamination factors of the strippable polymeric emulsion were evaluated with the polymer blend contents.
APA, Harvard, Vancouver, ISO, and other styles
9

Panaretos, Anastasios H., and Douglas H. Werner. "Analysis of a dual mode nanodipole loaded by a plasmonic core-shell particle." In 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2013. http://dx.doi.org/10.1109/aps.2013.6710727.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

YOU, J. L., B. J. PARK, H. J. CHOI, S. B. CHOI, and M. S. JHON. "PREPARATION AND MAGNETORHEOLOGICAL CHARACTERIZATION OF CI/PVB CORE/SHELL PARTICLE SUSEPENDED MR FLUIDS." In Proceedings of the 10th International Conference on ERMR 2006. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812771209_0100.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Core-Shell Particle' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography