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Search for "dynamic light scattering" in Full Text gives 209 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Hierarchical coassembly of DNA–triptycene hybrid molecular building blocks and zinc protoporphyrin IX

  • Rina Kumari,
  • Sumit Singh,
  • Mohan Monisha,
  • Sourav Bhowmick,
  • Anindya Roy,
  • Neeladri Das and
  • Prolay Das

Beilstein J. Nanotechnol. 2016, 7, 697–707, doi:10.3762/bjnano.7.62

Graphical Abstract
  • stained with SYBR® Gold. The image was captured by an UVP-Gel documentation system. Dynamic light scattering (DLS) The size distributions of the DNA nanoconstructs in aqueous solution were obtained by CONTIN analysis of the DLS (Delsa Nano C Particle Analyser, Beckman-Coulter) data. The measurements have
  • Supporting Information File 1, Figure S9). MBN treatment has no effect on the self-assembly in the presence or absence of Zn PpIX, thereby ruling out the possibility of smaller units tagged with unhybridized ssDNA tails (see Supporting Information File 1, Figure S10). Dynamic light scattering studies of DNA
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Published 12 May 2016

Gold nanoparticles covalently assembled onto vesicle structures as possible biosensing platform

  • M. Fátima Barroso,
  • M. Alejandra Luna,
  • Juan S. Flores Tabares,
  • Cristina Delerue-Matos,
  • N. Mariano Correa,
  • Fernando Moyano and
  • Patricia G. Molina

Beilstein J. Nanotechnol. 2016, 7, 655–663, doi:10.3762/bjnano.7.58

Graphical Abstract
  • order to covalently bind the AuNPs to the bilayer and to immobilize the vesicle on the Au electrode. This nanosystem was characterized by using UV–vis spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS) and cyclic voltammetry (CV). The results show that the vesicles were
  • techniques discussed below. Nanomaterial characterization Dynamic light scattering (DLS) The diameters of the LUVs were determined by DLS (Malvern 4700 with goniometer and 7132 correlator) with an argon ion laser operating at 488 nm. All the measurements were performed by using a scattering angle of 90° at a
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Published 02 May 2016

Efficiency improvement in the cantilever photothermal excitation method using a photothermal conversion layer

  • Natsumi Inada,
  • Hitoshi Asakawa,
  • Taiki Kobayashi and
  • Takeshi Fukuma

Beilstein J. Nanotechnol. 2016, 7, 409–417, doi:10.3762/bjnano.7.36

Graphical Abstract
  • (Figure 3c), we found plate-like particles with a diameter between 0.1 and 1 μm. The diameters observed in the SEM images agree with the average diameter of the colloidal graphite (460 nm) measured by dynamic light scattering. The results show that the plate-like particles observed in the SEM images are
  • process. The colloidal graphite concentration of the dispersions used in this study are shown in the caption of Figure 5. Sonication of the coating solution was performed before the coating process. The average diameter of colloidal particles in the coating solution was measured by the dynamic light
  • scattering (Zetasizer Nano-ZS, Malvern, Worcestershire, UK). Measurement of photothermal excitation efficiency A custom-built AFM equipped with a photothermal excitation setup and a commercially available oscillation controller (Nanonis OC4, SPECS, Zürich, Switzerland) were used for the photothermal
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Published 10 Mar 2016

Surface coating affects behavior of metallic nanoparticles in a biological environment

  • Darija Domazet Jurašin,
  • Marija Ćurlin,
  • Ivona Capjak,
  • Tea Crnković,
  • Marija Lovrić,
  • Michal Babič,
  • Daniel Horák,
  • Ivana Vinković Vrček and
  • Srećko Gajović

Beilstein J. Nanotechnol. 2016, 7, 246–262, doi:10.3762/bjnano.7.23

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  • ability [3][45]. In addressing the effects of surface coating on the stability and behavior of NPs in selected model biological environments, three types of widely used measurement techniques were employed: dynamic light scattering (DLS), electrophoretic light scattering (ELS) and transmission electron
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Published 15 Feb 2016

pH-Triggered release from surface-modified poly(lactic-co-glycolic acid) nanoparticles

  • Manuel Häuser,
  • Klaus Langer and
  • Monika Schönhoff

Beilstein J. Nanotechnol. 2015, 6, 2504–2512, doi:10.3762/bjnano.6.260

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  • calculated with respect to the monomeric unit of the corresponding compound. If needed, pH was adjusted by addition of 1 molar hydrochloric acid (HCl) and 1 molar sodium hydroxide solution (NaOH). Dynamic light scattering (DLS): Average particle size, polydispersity, and zeta potential were determined using
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Published 30 Dec 2015

Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates

  • Joseba Irigoyen,
  • Nikolaos Politakos,
  • Eleftheria Diamanti,
  • Elena Rojas,
  • Marco Marradi,
  • Raquel Ledezma,
  • Layza Arizmendi,
  • J. Alberto Rodríguez,
  • Ronald F. Ziolo and
  • Sergio E. Moya

Beilstein J. Nanotechnol. 2015, 6, 2310–2318, doi:10.3762/bjnano.6.237

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  • polyallylamine hydrochloride (PAH) and polystyrenesulfonate sodium salt (PSS). Capsules where characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), dynamic light scattering (DLS) and Raman microscopy, the constituent layers by zeta potential and GO by TEM, XRD, and Raman and
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Published 04 Dec 2015

Silica-coated upconversion lanthanide nanoparticles: The effect of crystal design on morphology, structure and optical properties

  • Uliana Kostiv,
  • Miroslav Šlouf,
  • Hana Macková,
  • Alexander Zhigunov,
  • Hana Engstová,
  • Katarína Smolková,
  • Petr Ježek and
  • Daniel Horák

Beilstein J. Nanotechnol. 2015, 6, 2290–2299, doi:10.3762/bjnano.6.235

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  • and time on the properties of the particles was investigated. The nanoparticles were characterized by transmission electron microscopy (TEM), electron diffraction (ED), energy dispersive spectroscopy (EDX), dynamic light scattering (DLS), thermogravimetric analysis (TGA), elemental analysis and X-ray
  • particle size (Dh) was measured using dynamic light scattering (DLS) on a ZEN 3600 Zetasizer Nano Instrument (Malvern Instruments; Malvern, UK) at pH 1. Thermogravimetric analysis (TGA) was performed in air using a Perkin Elmer TGA 7 analyzer (Norwalk, CT, USA) from 30 to 850 °C at a heating rate of 10
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Published 03 Dec 2015

An ISA-TAB-Nano based data collection framework to support data-driven modelling of nanotoxicology

  • Richard L. Marchese Robinson,
  • Mark T. D. Cronin,
  • Andrea-Nicole Richarz and
  • Robert Rallo

Beilstein J. Nanotechnol. 2015, 6, 1978–1999, doi:10.3762/bjnano.6.202

Graphical Abstract
  • identifier (“Material Source Name”) is reported in an appropriate “Factor Value [factor name]” column (e.g., “Factor Value [nanomaterial]). If the assay measures nanomaterial physicochemical parameters (e.g., size by dynamic light scattering, zeta potential), the originally sourced nanomaterial sample is
  • [17][39].) The corresponding data points are presented in “Measurement Value [statistic(measurement name)]” columns, e.g., “Measurement Value [z-average(hydrodynamic diameter)]” for an Assay file describing dynamic light scattering (DLS) size measurements [41][42]. External files “External” files [17
  • […]”) would need to be created to record the (meta)data of interest. Indeed, the Investigation file is designed to associate a given “Study Assay Measurement Type” (e.g., size) and “Study Assay Technology Type” (e.g., dynamic light scattering) with a given “Study Assay File Name”. Hence, specific templates
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Published 05 Oct 2015

Temperature-dependent breakdown of hydrogen peroxide-treated ZnO and TiO2 nanoparticle agglomerates

  • Sinan Sabuncu and
  • Mustafa Çulha

Beilstein J. Nanotechnol. 2015, 6, 1897–1903, doi:10.3762/bjnano.6.193

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  • influence of heating on the dispersion of H2O2-treated ZnO and TiO2 NPs is investigated using dynamic light scattering. The untreated and H2O2-treated ZnO and TiO2 NP suspensions were heated from 30 °C to 90 °C at 5 °C intervals to monitor the breakdown of large aggregates into smaller aggregates and
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Published 14 Sep 2015

NanoE-Tox: New and in-depth database concerning ecotoxicity of nanomaterials

  • Katre Juganson,
  • Angela Ivask,
  • Irina Blinova,
  • Monika Mortimer and
  • Anne Kahru

Beilstein J. Nanotechnol. 2015, 6, 1788–1804, doi:10.3762/bjnano.6.183

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  • size (59% of all the entries) that usually (in 82% of the entries) was measured using dynamic light scattering (DLS) method. The data on hydrodynamic sizes indicated that ENMs tend to agglomerate in test conditions as 69% of the reported sizes were larger than 100 nm (in comparison, nearly all
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Published 25 Aug 2015

A facile method for the preparation of bifunctional Mn:ZnS/ZnS/Fe3O4 magnetic and fluorescent nanocrystals

  • Houcine Labiadh,
  • Tahar Ben Chaabane,
  • Romain Sibille,
  • Lavinia Balan and
  • Raphaël Schneider

Beilstein J. Nanotechnol. 2015, 6, 1743–1751, doi:10.3762/bjnano.6.178

Graphical Abstract
  • heterostructures were characterized by X-ray diffraction (XRD), dynamic light scattering (DLS), transmission electron microscopy (TEM), UV–vis spectroscopy and photoluminescence (PL) spectroscopy. The PL spectra of Mn:ZnS/ZnS/Fe3O4 quantum dots (QDs) showed marked visible emission around 584 nm related to the 4T1
  • is approximately 0.6 nm for Mn:ZnS/ZnS/Fe3O4 (1.5) QDs. The nanoparticles were characterized by their hydrodynamic diameter before and after the Fe3O4 coating using dynamic light scattering (DLS) (Table 1). The average hydrodynamic diameters, dH, are larger than the particles sizes determined using
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Published 17 Aug 2015

Synthesis, characterization and in vitro biocompatibility study of Au/TMC/Fe3O4 nanocomposites as a promising, nontoxic system for biomedical applications

  • Hanieh Shirazi,
  • Maryam Daneshpour,
  • Soheila Kashanian and
  • Kobra Omidfar

Beilstein J. Nanotechnol. 2015, 6, 1677–1689, doi:10.3762/bjnano.6.170

Graphical Abstract
  • (VSM), energy dispersive X-ray diffraction (EDXD), dynamic light scattering (DLS), and thermogravimetric analysis (TGA). Results and Discussion In this study we successfully designed, synthesized, and compared two hybrid magnetic–gold nanocomposites by applying chitosan and one of its well-known
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Published 03 Aug 2015

The eNanoMapper database for nanomaterial safety information

  • Nina Jeliazkova,
  • Charalampos Chomenidis,
  • Philip Doganis,
  • Bengt Fadeel,
  • Roland Grafström,
  • Barry Hardy,
  • Janna Hastings,
  • Markus Hegi,
  • Vedrin Jeliazkov,
  • Nikolay Kochev,
  • Pekka Kohonen,
  • Cristian R. Munteanu,
  • Haralambos Sarimveis,
  • Bart Smeets,
  • Pantelis Sopasakis,
  • Georgia Tsiliki,
  • David Vorgrimmler and
  • Egon Willighagen

Beilstein J. Nanotechnol. 2015, 6, 1609–1634, doi:10.3762/bjnano.6.165

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  • , modes of action), interactions (cell lines, assays) and a wide variety of measurements. A number of analytic techniques have been proposed and developed to characterise the physicochemical properties of nanomaterials, including the commonly used dynamic light scattering to measure the particle size
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Published 27 Jul 2015

PLGA nanoparticles as a platform for vitamin D-based cancer therapy

  • Maria J. Ramalho,
  • Joana A. Loureiro,
  • Bárbara Gomes,
  • Manuela F. Frasco,
  • Manuel A. N. Coelho and
  • M. Carmo Pereira

Beilstein J. Nanotechnol. 2015, 6, 1306–1318, doi:10.3762/bjnano.6.135

Graphical Abstract
  • parameters used to characterize the produced nanoparticles. The size distribution and zeta potential were determined by dynamic light scattering (DLS) and electrophoretic light scattering (ELS), respectively, using a ZetaSizer Nano ZS (Malvern Instruments, Worcestershire, UK). The size distribution was given
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Published 12 Jun 2015

Synthesis, characterization and in vitro effects of 7 nm alloyed silver–gold nanoparticles

  • Simon Ristig,
  • Svitlana Chernousova,
  • Wolfgang Meyer-Zaika and
  • Matthias Epple

Beilstein J. Nanotechnol. 2015, 6, 1212–1220, doi:10.3762/bjnano.6.124

Graphical Abstract
  • important factor for subsequent in vitro experiments) was carried out by multiple ultracentrifugation steps. Characterization by transmission electron microscopy (TEM), differential centrifugal sedimentation (DCS), dynamic light scattering (DLS), UV–vis spectroscopy and atomic absorption spectroscopy (AAS
  • size and morphology of the nanoparticles were determined by transmission electron microscopy (TEM), differential centrifugal sedimentation (DCS) and dynamic light scattering (DLS). TEM showed that the nanoparticles were nearly monodisperse, quasi-spherical, polycrystalline, and had a uniform diameter
  • exchange with PVP. Dynamic light scattering also showed a monomodal particle size distribution without agglomerates. The polydispersity index between 0.1 and 0.3 confirmed a good degree of monodispersity. Note that the hydrodynamic radius, dH, as probed by DLS, is slightly larger (10–12 nm) than the radius
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Published 27 May 2015

Microwave assisted synthesis and characterisation of a zinc oxide/tobacco mosaic virus hybrid material. An active hybrid semiconductor in a field-effect transistor device

  • Shawn Sanctis,
  • Rudolf C. Hoffmann,
  • Sabine Eiben and
  • Jörg J. Schneider

Beilstein J. Nanotechnol. 2015, 6, 785–791, doi:10.3762/bjnano.6.81

Graphical Abstract
  • using Tecnai F20 G20 (FEI) electron microscope working at 200 kV, using lacey carbon coated copper grids. Dynamic light scattering (DLS) measurements for the ZnO suspensions were carried out using a Zetasizer Nano (Malvern). Atomic force microscopy was performed with CP-II (Bruker-Veeco) microscope
  • display the optimum conditions leading to the formation of nanocrystalline ZnO. Dynamic light scattering measurements indicate the formation of stable ≈5 nm particles, after a synthesis period of 30 min (see Supporting Information File 1, Figure S1). The indicated particle size is in good agreement with
  • light scattering (DLS), transmission electron microscopy (TEM), grazing incidence X-ray diffractometry (GI-XRD) and atomic force microscopy (AFM). TEM and DLS data confirm the formation of crystalline ZnO nanoparticles tethered on top of the virus template. GI-XRD investigations exhibit an orientated
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Published 20 Mar 2015

Pulmonary surfactant augments cytotoxicity of silica nanoparticles: Studies on an in vitro air–blood barrier model

  • Jennifer Y. Kasper,
  • Lisa Feiden,
  • Maria I. Hermanns,
  • Christoph Bantz,
  • Michael Maskos,
  • Ronald E. Unger and
  • C. James Kirkpatrick

Beilstein J. Nanotechnol. 2015, 6, 517–528, doi:10.3762/bjnano.6.54

Graphical Abstract
  • nanoparticles. Particle size was determined using the method of dynamic light scattering (DLS). Thus, the reported sizes are z-weighted mean values of the hydrodynamic diameter. Particle diameters were measured in cell culture medium (RPMI 1640) and, for reference, in water (containing 2 mmol/L sodium bromide
  • highly complex and requires the use of multi-angle dynamic light scattering instrumentation and sophisticated data analysis methods [14]. Therefore, it will not be discussed within the scope of this publication. Alveolar surfactant: Alveofact® is a commercially available (Lyomark Pharma) neonatal
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Published 20 Feb 2015

Tailoring the ligand shell for the control of cellular uptake and optical properties of nanocrystals

  • Johannes Ostermann,
  • Christian Schmidtke,
  • Christopher Wolter,
  • Jan-Philip Merkl,
  • Hauke Kloust and
  • Horst Weller

Beilstein J. Nanotechnol. 2015, 6, 232–242, doi:10.3762/bjnano.6.22

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  • -b-PEGs in water was investigated and showed the expected behavior depending on the size and block length ratio of the polymer [19]. The analytical data of the used characterization methods like dynamic light scattering (DLS) and fluorescence microscopy are summarized in Figure 1. As can be seen from
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Published 21 Jan 2015

Caveolin-1 and CDC42 mediated endocytosis of silica-coated iron oxide nanoparticles in HeLa cells

  • Nils Bohmer and
  • Andreas Jordan

Beilstein J. Nanotechnol. 2015, 6, 167–176, doi:10.3762/bjnano.6.16

Graphical Abstract
  • hydrodynamic diameter in physiological environment were measured by dynamic light scattering (Zetasizer, Malvern Instruments Ltd). Due to the synthesis route, often more than one iron core was enclosed during growth of the silica shells. This caused aggregation and therefore the nanoparticle suspensions were
  • = dynamic light scattering). Sequences of siRNAs used for transfection with Lipofectamine™ 2000 transfection reagent. siRNA-pools used to transfect HeLa cells (Dharmacon SMARTpool®). Primary antibodies with source and dilution used for detection of target proteins. Acknowledgements The authors would like
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Published 14 Jan 2015

The fate of a designed protein corona on nanoparticles in vitro and in vivo

  • Denise Bargheer,
  • Julius Nielsen,
  • Gabriella Gébel,
  • Markus Heine,
  • Sunhild C. Salmen,
  • Roland Stauber,
  • Horst Weller,
  • Joerg Heeren and
  • Peter Nielsen

Beilstein J. Nanotechnol. 2015, 6, 36–46, doi:10.3762/bjnano.6.5

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  • measured using the large volume Hamburg whole body radioactivity counter [39]. 125I was measured with an automatic gamma counter (Perkin Elmer 2470 Wizard). DLS measurement Dynamic light scattering of SPIOs or proteins solutions in PBS-buffer was performed using a Malvern Zen1690. In vivo studies All
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Published 06 Jan 2015

Intake of silica nanoparticles by giant lipid vesicles: influence of particle size and thermodynamic membrane state

  • Florian G. Strobl,
  • Florian Seitz,
  • Christoph Westerhausen,
  • Armin Reller,
  • Adriano A. Torrano,
  • Christoph Bräuchle,
  • Achim Wixforth and
  • Matthias F. Schneider

Beilstein J. Nanotechnol. 2014, 5, 2468–2478, doi:10.3762/bjnano.5.256

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  • . This is to prevent osmotic tension of the vesicle membrane at the beginning of an experiment. The colloidal stability of the particles under these conditions was confirmed by dynamic light scattering (DLS). Figure 9 describes the easy experimental procedure. Due to the slight density difference between
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Published 23 Dec 2014

Proinflammatory and cytotoxic response to nanoparticles in precision-cut lung slices

  • Stephanie Hirn,
  • Nadine Haberl,
  • Kateryna Loza,
  • Matthias Epple,
  • Wolfgang G. Kreyling,
  • Barbara Rothen-Rutishauser,
  • Markus Rehberg and
  • Fritz Krombach

Beilstein J. Nanotechnol. 2014, 5, 2440–2449, doi:10.3762/bjnano.5.253

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  • vitro as well as in vivo assays. Results Particle characterization The mean hydrodynamic diameter of the Ag-NPs as determined by dynamic light scattering (DLS) was 116 nm and the polydispersity index (PDI) was below 0.3 for all measurements. The mean diameter of the metallic core as determined by
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Published 18 Dec 2014

Nanoparticle interactions with live cells: Quantitative fluorescence microscopy of nanoparticle size effects

  • Li Shang,
  • Karin Nienhaus,
  • Xiue Jiang,
  • Linxiao Yang,
  • Katharina Landfester,
  • Volker Mailänder,
  • Thomas Simmet and
  • G. Ulrich Nienhaus

Beilstein J. Nanotechnol. 2014, 5, 2388–2397, doi:10.3762/bjnano.5.248

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  • adsorbed amphiphiles, the anionic surfactant SDS or cetyltrimethylammonium (CTMA) chloride to yield negatively (PS−) and positively (PS+) charged NPs, respectively. The hydrodynamic diameters of these NPs suspended in PBS, pH 7.4, were determined by dynamic light scattering (DLS) (Table 1). Furthermore
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Published 11 Dec 2014

Inorganic Janus particles for biomedical applications

  • Isabel Schick,
  • Steffen Lorenz,
  • Dominik Gehrig,
  • Stefan Tenzer,
  • Wiebke Storck,
  • Karl Fischer,
  • Dennis Strand,
  • Frédéric Laquai and
  • Wolfgang Tremel

Beilstein J. Nanotechnol. 2014, 5, 2346–2362, doi:10.3762/bjnano.5.244

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  • ]. Copyright 2014 American Chemical Society. TEM micrographs of silica encapsulated Janus particles; (a,b) Au@MnO@SiO2 (10@20 nm), and (c,d) Au@Fe3O4@SiO2 (9@15 nm). Dynamic light scattering results of Au (red dots), Au@Fe3O4 (blue dots) dispersed in n-heptane, and Au@Fe3O4@SiO2 (black dots) in water (λ
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Published 05 Dec 2014

Nanobioarchitectures based on chlorophyll photopigment, artificial lipid bilayers and carbon nanotubes

  • Marcela Elisabeta Barbinta-Patrascu,
  • Stefan Marian Iordache,
  • Ana Maria Iordache,
  • Nicoleta Badea and
  • Camelia Ungureanu

Beilstein J. Nanotechnol. 2014, 5, 2316–2325, doi:10.3762/bjnano.5.240

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  • . Dynamic light scattering (DLS) measurements The size of the liposomes represented by the hydrodynamic diameter, Zaverage (the particle diameter plus the double layer thickness) was measured using DLS (Zetasizer Nano ZS, Malvern Instruments Ltd., U.K.) at 25 °C at a scattering angle of 90°. The average
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Published 02 Dec 2014
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