Academic literature on the topic 'Neutron reflectivity'

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Journal articles on the topic "Neutron reflectivity"

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Cousin, Fabrice, and Alain Menelle. "Neutron reflectivity." EPJ Web of Conferences 104 (2015): 01005. http://dx.doi.org/10.1051/epjconf/201510401005.

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Penfold, Jeffrey. "Neutron Reflectivity." Langmuir 25, no. 7 (April 7, 2009): 3919. http://dx.doi.org/10.1021/la9003824.

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Cousin, Fabrice, and Alexis Chennevière. "Neutron reflectivity for soft matter." EPJ Web of Conferences 188 (2018): 04001. http://dx.doi.org/10.1051/epjconf/201818804001.

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Specular neutron reflectivity is a technique enabling the measurement of coherent neutron scattering length density profile perpendicular to the plane of a surface or interface, and thereby the profile of chemical composition. The characteristic sizes that are probed range from around 5Å up 5000 Å. It is a scattering technique that averages information over the entire surface and it is therefore not possible to obtain information on correlations in the plane of the interface. The specific properties of neutrons (possibility of tuning the contrast by isotopic substitution, negligible absorption, low energy of the incident neutrons) makes it particularly interesting in the fields of soft matter and biophysics. This course is composed of three parts describing respectively its principle, the experimental aspects (diffractometers, samples), and some scientific examples of neutron reflectometry focusing on the use of contrast variation to probe polymeric systems.
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Yamazaki, Dai, and Masahiro Hino. "Neutron Reflectivity Measurement." hamon 19, no. 1 (2009): 34–40. http://dx.doi.org/10.5611/hamon.19.1_34.

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Majkrzak, C. F., and N. F. Berk. "Inverting specular neutron reflectivity." Acta Crystallographica Section A Foundations of Crystallography 52, a1 (August 8, 1996): C472. http://dx.doi.org/10.1107/s0108767396080658.

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Penfold, J. "Instrumentation for neutron reflectivity." Physica B: Condensed Matter 173, no. 1-2 (August 1991): 1–10. http://dx.doi.org/10.1016/0921-4526(91)90028-d.

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Vignaud, Guillaume, and Alain Gibaud. "REFLEX: a program for the analysis of specular X-ray and neutron reflectivity data." Journal of Applied Crystallography 52, no. 1 (February 1, 2019): 201–13. http://dx.doi.org/10.1107/s1600576718018186.

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The use of X-ray and neutron reflectivity has been generalized worldwide for scientists who want to determine specific physical properties (such as electron-density profile, scattering-length density, roughness and thickness) of films less than 200 nm thick deposited on a substrate. This paper describes a freeware program named REFLEX, which is a standalone program dedicated to the simulation and analysis of X-ray and neutron reflectivity from multilayers. This program was first written two decades ago and has been constantly improved since, but never published until now. The latest version of REFLEX covers generalized types of calculation of reflectivity curves including both neutron and X-ray reflectivity. In the case of X-rays, the program can deal with both s and p polarization, which is quite important in the soft X-ray region where the two polarizations can yield different results. Neutron reflectivity is calculated within the framework of non-spin-polarized neutrons. REFLEX has also been designed to include any type of fluid (such as supercritical CO2) on top of the analysed film and includes corrections of the footprint effect for analysis on an absolute scale.
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Bucknall, D. G., S. A. Butler, and J. S. Higgins. "Neutron reflectivity of polymer interfaces." Journal of Physics and Chemistry of Solids 60, no. 8-9 (September 1999): 1273–77. http://dx.doi.org/10.1016/s0022-3697(99)00101-8.

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Zabel, Hartmut. "Neutron reflectivity of spintronic materials." Materials Today 9, no. 1-2 (January 2006): 42–49. http://dx.doi.org/10.1016/s1369-7021(05)71337-7.

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Berk, N. F., and C. F. Majkrzak. "Wavelet Analysis of Neutron Reflectivity†." Langmuir 19, no. 19 (September 2003): 7811–17. http://dx.doi.org/10.1021/la034126w.

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Dissertations / Theses on the topic "Neutron reflectivity"

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Harwood, N. M. "A neutron reflectivity study of thin films." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378329.

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Latter, Edward Gareth. "Interfacial adsorption of proteins : a neutron reflectivity study." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:7e4f1611-82f5-4923-a7cb-e6bd2289fbd5.

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Protein adsorption at the solid/liquid interface is of wide ranging importance in many different areas of science such as biomaterial design, the fate of nanoparticles and in the food industry. As a result, many studies have been undertaken with varying foci but there still remains a lack of agreement between many working in this field and fundamental questions regarding the adsorption of proteins at the solid/liquid interface. Neutron reflectivity is a powerful technique for probing the properties of adsorbed layers at interfaces due to its high structural resolution and the possibility of using isotopic substitution to distinguish between components of a mixture. In this work, neutron reflectivity has been used as the primary technique for the investigation of proteins adsorbed sequentially or from a binary mixture. Initially, the adsorption of four proteins (carbonic anhydrase II, lysozyme, human serum albumin and maltose binding protein) onto a clean silica surface was investigated which revealed the importance of electrostatic interactions and entropic contributions to the driving forces for adsorption. Most of the adsorbed layers were described by a 2-layer model with a thinner, denser layer adjacent to the surface and a thick, diffuse layer extending into the bulk solution. The presence of impurities is also shown to have a significant impact on the adsorption of HSA. A study of the HSA/myristic acid system shows that the presence of small amphiphiles can inhibit HSA adsorption and also remove a pre-adsorbed layer. A comparison was made between the protonated and deuterated forms of two proteins, HSA & MBP, showing the deuterated proteins to have a higher affinity for the surface with adsorption occurring in a 3:1 ratio when from a 1:1 mixture. Likewise, d-MBP displaced h-MBP more readily than vice versa in an investigation into the effect of incubation time on the properties of the protein layer. The extent of desorption into protein free buffer is not affected by incubation time but the extent to which d-MBP was displaced by h-MBP showed a clear trend of decreased exchange with increasing incubation time indicating an active exchange process was occurring. This was also observed to a lesser extent for the sequential adsorption of binary protein systems, HSA & LYS and HSA & MBP. When investigating binary protein mixtures the higher propensity for deuterated proteins to adsorb is observed. LYS dominates when adsorbed from a mixture with h-HSA but from a d-HSA & LYS mix both proteins were adsorbed. The marked difference between the adsorption characteristics of perdeuterated proteins and their protonated counterparts provides a good case study for testing the neutron reflectivity technique when investigating systems with more than one component. This thesis assesses the limitations of the methodology of contrast variation for investigating mixtures as well as using different solvent contrasts. A comparison of neutron reflectivity and dual polarisation interferometry (DPI) shows that the two techniques are similar and any small differences can be attributed to the small change in surface chemistry. This comparison also highlights the advantages of DPI; high throughput of samples and detailed information but the restriction to using a 1-layer model limits its use.
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Han, Sang-Wook. "Spin-polarized neutron reflectivity and x-ray scattering studies on thin film superconductors /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9962527.

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Warren, Nicola. "A study of polymer-surfactant interactions by neutron reflectivity." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365840.

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Miller, Kathryn Louise. "Neutron reflectivity of aqueous mineral and metal oxide interfaces." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708387.

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McKinley, Laura Ellen. "Neutron reflectivity studies of bacterial membranes, peptides and proteins." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28874.

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This thesis uses neutron and x-ray reflectivity to measure the interfacial structures of three molecular components associated with bacteria. Firstly, the way in which the membrane targeting sequence of a cell division protein interacts with monolayer models for the inner leaflet of the inner membrane of bacteria was measured at the air-water interface. Secondly, the influence of lipopolysaccharide on a monolayer model for the outer leaflet of the outer membrane of Gram-negative bacteria was measured at the air-water interface, as well as how this lipopolysaccharide interacts with an antimicrobial peptide. Finally, the structure of a layer of protein found at the surface of a Gram-positive biofilm was measured at the air-water interface. Binding of the membrane targeting sequence of the MinD protein (MinD-mts) to the inner leaflet of the cytoplasmic membrane is thought to be key for bacterial cell division. Modelling this membrane as a monolayer at the air-water interface, it was found that the insertion of the MinD-mts increased with decreasing lateral pressure within the monolayer, as well as with increasing unsaturation of the lipid components, and the incorporation of cardiolipin into the monolayer. Lipopolysaccharide (LPS) is the major component of Gram-negative outer membranes, such as Escherichia coli, and can be considered as having three structural components: lipid A, a core oligosaccharide, and a variable polysaccharide chain. By incorporating LPS into a model membrane at the air-water interface, it was found that the polysaccharide chain undergoes conformational changes depending on the area per molecule. The effect of the antimicrobial peptide Pexiganan on the structure of this LPS layer was also determined, and was found to insert into the polysaccharide chain layer, but have no impact on the conformation of the chains. In nature, many bacteria live within a biofilm structure. A critical component of the Gram-positive Bacillus subtilis biofilm is a surface active amphipathic protein called BslA, which gives rise to the formation of the highly hydrophobic surface of the biofilm. The kinetics of this film formation, its thickness, and the lateral packing of the protein at the air-water interface, were measured using both neutron and x-ray reflectivity. It was found that a native BslA protein consistently formed the same structural film, whilst the structure of films formed by mutant proteins depended on the conditions under which the film was formed.
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Willatt, A. J. "Specular reflection of neutrons and X-rays from interfaces." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235074.

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Dennison, Andrew. "Neutron reflectivity studies of insulin and phosphatidylcholine floating lipid bilayers." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574586.

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Stidder, Barry David. "Phase behaviour of supported lipid bilayers studied by neutron reflectivity." Thesis, University of Bath, 2004. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414602.

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Phillips, Pepe Louise. "Characterization of liquid crystal surfaces by X-ray and neutron scattering." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388101.

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Books on the topic "Neutron reflectivity"

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Daillant, Jean, and Alain Gibaud, eds. X-ray and Neutron Reflectivity. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88588-7.

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X-ray and neutron reflectivity: Principles and applications. 2nd ed. Berlin: Springer, 2009.

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Foton Fakutorī Kenkyūkai (2001 KEK). Heisei 13-nendo PF Kenkyūkai "X-sen chūseishi hansharitsuhō ni yoru hakumaku tasōmaku no kōzō kaiseki": X-ray and neutron reflectivity studies on thin films and multilayers : KEK, Tsukuba, Japan, December 21-22, 2001. [Tsukuba-shi]: High Energy Accelerator Research Organization, 2002.

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Gibaud, Alain, and Jean Daillant. X-ray and Neutron Reflectivity: Principles and Applications. Springer, 2010.

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X-Ray and Neutron Reflectivity: Principles and Applications (Lecture Notes in Physics). Springer, 1999.

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Book chapters on the topic "Neutron reflectivity"

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Ott, Frédéric. "Neutron Reflectivity." In Surface Science Techniques, 307–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34243-1_11.

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de Bergevin, F. "The Interaction of X-Rays (and Neutrons) with Matter." In X-ray and Neutron Reflectivity, 1–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88588-7_1.

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Burgess, Ian J. "Applications of Neutron Reflectivity in Bioelectrochemistry." In Advances in Electrochemical Sciences and Engineering, 143–88. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527644117.ch3.

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Atkinson, Peter J., Eric Dickinson, David S. Horne, and Robert M. Richardson. "Neutron Reflectivity of Adsorbed Protein Films." In ACS Symposium Series, 311–20. Washington, DC: American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0602.ch022.

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Gayen, Sirshendu, Milan K. Sanyal, and Max Wolff. "Neutron Reflectivity to Characterize Nanostructured Films." In Magnetic Characterization Techniques for Nanomaterials, 339–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-52780-1_10.

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Clemens, D. "Numerical Determination of the Reflectivity of Multilayered Neutron Mirrors." In Physics, Fabrication, and Applications of Multilayered Structures, 370. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4757-0091-6_38.

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Ankner, J. F. "Profile Refinement in Neutron Reflectivity and Grazing Angle Diffraction." In Springer Proceedings in Physics, 105–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77144-6_20.

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Krueger, S., B. W. Koenig, W. J. Orts, N. F. Berk, C. F. Majkrzak, and K. Gawrisch. "Neutron Reflectivity Studies of Single Lipid Bilayers Supported on Planar Substrates." In Neutrons in Biology, 205–13. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5847-7_19.

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Nanda, Hirsh. "Resolving Membrane-Bound Protein Orientation and Conformation by Neutron Reflectivity." In Proteins in Solution and at Interfaces, 99–111. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118523063.ch5.

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Vaknin, D., J. Als-Nielsen, M. Piepenstock, and M. Lösche. "Protein Recognition Processes at Functionalized Lipid Surfaces: A Neutron Reflectivity Study." In Springer Proceedings in Physics, 155–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77144-6_30.

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Conference papers on the topic "Neutron reflectivity"

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Al-Dabbagh, J. B., and B. L. Evans. "Neutron reflectivity of Ni-Si multilayers." In 32nd Annual Technical Symposium, edited by Charles F. Majkrzak. SPIE, 1989. http://dx.doi.org/10.1117/12.948763.

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Al -Dabbagh, J. B., and B. L. Evans. "Neutron Reflectivity Of Ni-Si Multilayers." In 32nd Annual Technical Symposium, edited by Finn E. Christensen. SPIE, 1988. http://dx.doi.org/10.1117/12.948769.

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Vidal, Bernard, Z. Jiang, and Francois J. Samuel. "Reflectivity improvements for neutron mirrors and supermirrors." In San Diego '92, edited by Charles F. Majkrzak and James L. Wood. SPIE, 1992. http://dx.doi.org/10.1117/12.130617.

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Popovici, Alexander M., Brent J. Heuser, William B. Yelon, and John E. Keem. "Determination of reflectivity curves of multilayer neutron monochromators." In San Diego '92, edited by Charles F. Majkrzak and James L. Wood. SPIE, 1992. http://dx.doi.org/10.1117/12.130631.

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Ankner, John F., and Charles F. Majkrzak. "Subsurface profile refinement for neutron specular reflectivity (Invited Paper)." In San Diego '92, edited by Charles F. Majkrzak and James L. Wood. SPIE, 1992. http://dx.doi.org/10.1117/12.130637.

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Majkrzak, Charles F., N. F. Berk, John F. Ankner, Sushil K. Satija, and Terence P. Russell. "Determination of nonmagnetic density profiles using polarized neutron reflectivity." In San Diego '92, edited by Charles F. Majkrzak and James L. Wood. SPIE, 1992. http://dx.doi.org/10.1117/12.130639.

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Maruyama, Ryuji, Dai Yamazaki, and Kazuhiko Soyama. "Effect of the Interface Roughness Correlation on the Reflectivity in a Neutron Multilayer Mirror." In Proceedings of the International Conference on Neutron Optics (NOP2017). Journal of the Physical Society of Japan, 2018. http://dx.doi.org/10.7566/jpscp.22.011011.

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Steyerl, Albert, S. S. Malik, A. C. Nunes, W. Drexel, W. Mampe, P. Ageron, W. Turba, and Tohru Ebisawa. "Reflectivity and profile studies in ultracold neutron mirror reflection and grating diffraction." In San Diego '92, edited by Charles F. Majkrzak and James L. Wood. SPIE, 1992. http://dx.doi.org/10.1117/12.130641.

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Singh, Surendra, and Saibal Basu. "Simultaneous parameter optimization of x-ray and neutron reflectivity data using genetic algorithms." In DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4947885.

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Singh, Surendra, and Saibal Basu. "Probing depth dependent structure and magnetic properties of thin films using polarized neutron reflectivity." In NANOFORUM 2014. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4917574.

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Reports on the topic "Neutron reflectivity"

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Deutsch, M., and B. M. Ocko. X-ray and neutron reflectivity. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10117612.

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