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Journal articles on the topic 'Shell mapping'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Takizawa, Kenji, Tayfun E. Tezduyar, and Takafumi Sasaki. "Isogeometric hyperelastic shell analysis with out-of-plane deformation mapping." Computational Mechanics 63, no. 4 (2018): 681–700. http://dx.doi.org/10.1007/s00466-018-1616-3.

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Abstract We derive a hyperelastic shell formulation based on the Kirchhoff–Love shell theory and isogeometric discretization, where we take into account the out-of-plane deformation mapping. Accounting for that mapping affects the curvature term. It also affects the accuracy in calculating the deformed-configuration out-of-plane position, and consequently the nonlinear response of the material. In fluid–structure interaction analysis, when the fluid is inside a shell structure, the shell midsurface is what it would know. We also propose, as an alternative, shifting the “midsurface” location in

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2

Fischer, R. F. H. "Calculation of shell frequency distributions obtained with shell-mapping schemes." IEEE Transactions on Information Theory 45, no. 5 (1999): 1631–39. http://dx.doi.org/10.1109/18.771233.

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3

Gohnert, Mitchell. "The Effects of Thermal Loading on Masonry Structures." Key Engineering Materials 517 (June 2012): 689–94. http://dx.doi.org/10.4028/www.scientific.net/kem.517.689.

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Thin shell masonry structures are ideal for low-cost housing. Curved structures are ideally suited to resist external forces and are the most efficient structures. In shell structures, the forces are primarily in-plane, referred to as membrane forces. Shells, dominated by compressive stresses, are an absolute requirement in masonry structures, to minimize cracking. However, shell structures which are designed for pure compression still exhibit cracking on the external surface. Cracked shells are unsightly and a precursor to durability problems. For this reason, several studies have been undert

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4

Lee, Y. H. "Improved shell mapping with coded modulation." Electronics Letters 29, no. 21 (1993): 1821. http://dx.doi.org/10.1049/el:19931211.

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5

Olsson, A., P. Janhunen, and W. K. Peterson. "Ion shell distributions as free energy source for plasma waves on auroral field lines mapping to plasma sheet boundary layer." Annales Geophysicae 22, no. 6 (2004): 2115–33. http://dx.doi.org/10.5194/angeo-22-2115-2004.

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Abstract. Ion shell distributions are hollow spherical shells in velocity space that can be formed by many processes and occur in several regions of geospace. They are interesting because they have free energy that can, in principle, be transmitted to ions and electrons. Recently, a technique has been developed to estimate the original free energy available in shell distributions from in-situ data, where some of the energy has already been lost (or consumed). We report a systematic survey of three years of data from the Polar satellite. We present an estimate of the free energy available from

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6

Skouras, L. D., P. Van Isacker, and M. A. Nagarajan. "A Democratic Mapping between the Shell Model and the IBM." HNPS Proceedings 1 (February 18, 2020): 115. http://dx.doi.org/10.12681/hnps.2830.

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A method is proposed to connect states of the shell model and the interacting boson model and derive the boson model hamiltonian from shell-model data. This novel mapping technique is based on the properties of the shell-model overlap matrix. An application to the /7/2 shell is presented and the results of the new mapping are compared with the standard OAI results.

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7

Ahn, Jae S., Seung H. Yang, and Kwang S. Woo. "ESL Based Cylindrical Shell Elements with Hierarchical Shape Functions for Laminated Composite Shells." Mathematical Problems in Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/676181.

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We introduce higher-order cylindrical shell element based on ESL (equivalent single-layer) theory for the analysis of laminated composite shells. The proposed elements are formulated by the dimensional reduction technique from three-dimensional solid to two-dimensional cylindrical surface with plane stress assumption. It allows the first-order shear deformation and considers anisotropic materials due to fiber orientation. The element displacement approximation is established by the integrals of Legendre polynomials with hierarchical concept to ensure theC0-continuity at the interface between a

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8

Halse, P. "On the OAI mapping for a shell." Nuclear Physics A 451, no. 1 (1986): 91–103. http://dx.doi.org/10.1016/0375-9474(86)90243-5.

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9

Hausmann, N., P. Siozos, A. Lemonis, A. C. Colonese, H. K. Robson, and D. Anglos. "Elemental mapping of Mg/Ca intensity ratios in marine mollusc shells using laser-induced breakdown spectroscopy." Journal of Analytical Atomic Spectrometry 32, no. 8 (2017): 1467–72. http://dx.doi.org/10.1039/c7ja00131b.

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Here we apply Laser Induced Breakdown Spectroscopy (LIBS) to efficiently map the elemental change throughout the growth increments of three mollusc shells. We employ an automated LIBS setup to map the Mg/Ca composition of whole shell sections with over 2000 data points per hour.

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10

Branco, J. N. Rodrigues, and C. Guedes Soares. "Mapping of Shell Plates of Double Curvature Into Plane Surfaces." Journal of Ship Production 21, no. 04 (2005): 248–57. http://dx.doi.org/10.5957/jsp.2005.21.4.248.

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A solution for mapping of shell plates of double curvature into plane surfaces is presented. As in most cases in which the equation of the surface of a compound-curved shell plate is unknown, the mapping of the surface of such a plate is done to a so-called "associated surface," which is specified in three dimensions and can substitute for the previous one within the shipbuilding tolerances. This solution allows a plane peripheral contour of one of these shell plates to be built according to the forming process chosen. It also allows the calculation of the parameters involved instead of the tr

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11

Ahn, Jae S., Seung H. Yang, and Kwang S. Woo. "Robustness of Hierarchical Laminated Shell Element Based on Equivalent Single-Layer Theory." Mathematical Problems in Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/301054.

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This paper deals with the hierarchical laminated shell elements with nonsensitivity to adverse conditions for linear static analysis of cylindrical problems. Displacement approximation of the elements is established by high-order shape functions using the integrals of Legendre polynomials to ensureC0continuity at the interface between adjacent elements. For exact linear mapping of cylindrical shell problems, cylindrical coordinate is adopted. To find global response of laminated composite shells, equivalent single-layer theory is also considered. Thus, the proposed elements are formulated by t

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12

Khandani, A. K., and P. Kabal. "Shaping multidimensional signal spaces. I. Optimum shaping, shell mapping." IEEE Transactions on Information Theory 39, no. 6 (1993): 1799–808. http://dx.doi.org/10.1109/18.265491.

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13

Coda, Humberto Breves, and Rodrigo Ribeiro Paccola. "Unconstrained Finite Element for Geometrical Nonlinear Dynamics of Shells." Mathematical Problems in Engineering 2009 (2009): 1–32. http://dx.doi.org/10.1155/2009/575131.

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This paper presents a positional FEM formulation to deal with geometrical nonlinear dynamics of shells. The main objective is to develop a new FEM methodology based on the minimum potential energy theorem written regarding nodal positions and generalized unconstrained vectors not displacements and rotations. These characteristics are the novelty of the present work and avoid the use of large rotation approximations. A nondimensional auxiliary coordinate system is created, and the change of configuration function is written following two independent mappings from which the strain energy functio

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14

Shi, Xiaowen, Ross Harder, Zhen Liu, et al. "Nanoscale Mapping of Heterogeneous Strain and Defects in Individual Magnetic Nanocrystals." Crystals 10, no. 8 (2020): 658. http://dx.doi.org/10.3390/cryst10080658.

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We map the three-dimensional strain heterogeneity within a single core-shell Ni nanoparticle using Bragg coherent diffractive imaging. We report the direct observation of both uniform displacements and strain within the crystalline core Ni region. We identify non-uniform displacements and dislocation morphologies across the core–shell interface, and within the outer shell at the nanoscale. By tracking individual dislocation lines in the outer shell region, and comparing the relative orientation between the Burgers vector and dislocation lines, we identify full and partial dislocations. The ful

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15

Kirakosian, Katie. "Mapping the Social Worlds of Shell Midden Archaeology in Massachusetts." Bulletin of the History of Archaeology 25, no. 2 (2015): 6. http://dx.doi.org/10.5334/bha.260.

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16

Ramirez, E. M., D. Ackermann, K. Blaum, et al. "Direct Mapping of Nuclear Shell Effects in the Heaviest Elements." Science 337, no. 6099 (2012): 1207–10. http://dx.doi.org/10.1126/science.1225636.

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17

Elliott, J. P., and J. A. Evans. "A direct mapping from shell modelSU(3) to bosonSU(3)." Journal of Physics G: Nuclear and Particle Physics 25, no. 10 (1999): 2071–85. http://dx.doi.org/10.1088/0954-3899/25/10/307.

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18

Avancini, S. S., J. R. Marinelli, and D. P. Menezes. "Boson mapping for a singlej-shell within the quon statistics." Journal of Physics G: Nuclear and Particle Physics 25, no. 9 (1999): 1829–37. http://dx.doi.org/10.1088/0954-3899/25/9/306.

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19

FLETCHER, ALASTAIR, and DANIEL A. NICKS. "Superattracting fixed points of quasiregular mappings." Ergodic Theory and Dynamical Systems 36, no. 3 (2014): 781–93. http://dx.doi.org/10.1017/etds.2014.88.

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We investigate the rate of convergence of the iterates of an $n$-dimensional quasiregular mapping within the basin of attraction of a fixed point of high local index. A key tool is a refinement of a result that gives bounds on the distortion of the image of a small spherical shell. This result also has applications to the rate of growth of quasiregular mappings of polynomial type, and to the rate at which the iterates of such maps can escape to infinity.

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20

Bonatsos, Dennis, L. D. Skouras, P. Van Isacker, and M. A. Nagarajan. "AN APPLICATION OF THE DEMOCRATIC MAPPING IN REALISTIC SYSTEMS." HNPS Proceedings 2 (February 18, 2020): 99. http://dx.doi.org/10.12681/hnps.2845.

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The democratic mapping is used for the calculation of low lying states of nuclei in the sd and fp shells. In addition to demonstrating the applicability of the method in realistic cases where many non-degenerate levels are present, the method allows for the ranking of the various bosons according to their importance as building blocks of low lying states. It is proven that the s and d bosons are the most important building blocks, followed by the d' and g bosons. Thus one of the basic assumptions of the Interacting Boson Model (IBM) is proven to be correct. Very good agreement between the boso

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21

Stelbrink, Björn, Romy Richter, Frank Köhler, et al. "Global Diversification Dynamics Since the Jurassic: Low Dispersal and Habitat-Dependent Evolution Explain Hotspots of Diversity and Shell Disparity in River Snails (Viviparidae)." Systematic Biology 69, no. 5 (2020): 944–61. http://dx.doi.org/10.1093/sysbio/syaa011.

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Abstract The Viviparidae, commonly known as River Snails, is a dominant group of freshwater snails with a nearly worldwide distribution that reaches its highest taxonomic and morphological diversity in Southeast Asia. The rich fossil record is indicative of a probable Middle Jurassic origin on the Laurasian supercontinent where the group started to diversify during the Cretaceous. However, it remains uncertain when and how the biodiversity hotspot in Southeast Asia was formed. Here, we used a comprehensive genetic data set containing both mitochondrial and nuclear markers and comprising specie

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22

Izumiura, Hideyuki, L. B. F. M. Waters, T. De Jong, C. Loup, and O. Hashimoto. "Extended Dust Shells around Carbon Stars in the Infrared and in Optical Light." Symposium - International Astronomical Union 177 (2000): 425–32. http://dx.doi.org/10.1017/s0074180900002692.

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We investigate the structure of extended dust shells around optical carbon stars in the far-infrared and in optical light. In the optical we have discovered that R Scl and U Ant are associated with circularly extended emission, the radii of which are about 20″ and 58″, respectively. The emission is probably scattered light of the central star by dust grains in their circumstellar shells. In the far-infrared we have discovered a double shell structure surrounding U Ant in high resolution IRAS images, which is direct evidence of a periodic change of mass-loss on a time-scale of the order of 104

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23

Kumar, Arun, Raimondo Cecchini, Claudia Wiemer, et al. "MOCVD Growth of GeTe/Sb2Te3 Core–Shell Nanowires." Coatings 11, no. 6 (2021): 718. http://dx.doi.org/10.3390/coatings11060718.

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We report the self-assembly of core–shell GeTe/Sb2Te3 nanowires (NWs) on Si (100), and SiO2/Si substrates by metalorganic chemical vapour deposition, coupled to the vapour–liquid–solid mechanism, catalyzed by Au nanoparticles. Scanning electron microscopy, X-ray diffraction, micro-Raman mapping, high-resolution transmission electron microscopy, and electron energy loss spectroscopy were employed to investigate the morphology, structure, and composition of the obtained core and core–shell NWs. A single crystalline GeTe core and a polycrystalline Sb2Te3 shell formed the NWs, having core and core

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24

Zwolak, Karolina, Yulia Zarayskaya, Rochelle Ann Wigley, et al. "The Shell Ocean Discovery Xprize Competition Impact on the Development of Ocean Mapping Possibilities." Annual of Navigation 25, no. 1 (2018): 125–36. http://dx.doi.org/10.1515/aon-2018-0009.

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AbstractThe paper presents the impact that the XPRIZE Foundation competition, the Shell Ocean Discovery XPRIZE, has had on the development of current ocean mapping possibilities. A race for the prize has accelerated the development of innovative seabed mapping approaches that concentrated on new systems engineering or cutting-edge and innovative methods of existing equipment exploitation. The GEBCO - Nippon Foundation (NF) Alumni Team’s entry is presented in details as a state of the art example of mature and robust oceanmapping solution utilizing a high degree of autonomy and providing the po

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25

Lei, Zhen, Frederic Gillot, and Louis Jezequel. "Shape Optimization for Natural Frequency with Isogeometric Kirchhoff-Love Shell and Sensitivity Mapping." Mathematical Problems in Engineering 2018 (June 26, 2018): 1–11. http://dx.doi.org/10.1155/2018/9531651.

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A fast shape optimization strategy for free form shell structure design with structural dynamics criteria is proposed in this paper. The structures are modelled with Non-Uniform Rational B-Spline based isogeometric Kirchhoff-Love shell elements. The substitution of the traditional finite elements not only makes the mesh model geometrically exact but also avoids the laborious mesh regeneration during the design update. As for the structural response evaluation, the modal synthesis method is adopted to avoid a repeated evaluation of some substructures where there are no designed variables attach

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26

Taquet, Maxime, Benoit Scherrer, Nicolas Boumal, Jurriaan M. Peters, Benoit Macq, and Simon K. Warfield. "Improved fidelity of brain microstructure mapping from single-shell diffusion MRI." Medical Image Analysis 26, no. 1 (2015): 268–86. http://dx.doi.org/10.1016/j.media.2015.10.004.

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27

Takada, Kenjiro, Shigeru Tazaki, and Seiichi Yasumoto. "Dyson Boson Mapping and Shell-Model Calculations for Even-Even Nuclei." Progress of Theoretical Physics 116, no. 1 (2006): 107–26. http://dx.doi.org/10.1143/ptp.116.107.

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28

Monteforte, Marianne, Shoko Kobayashi, Le D. Tung, et al. "Quantitative two-dimensional strain mapping of small core–shell FePt@Fe3O4nanoparticles." New Journal of Physics 18, no. 3 (2016): 033016. http://dx.doi.org/10.1088/1367-2630/18/3/033016.

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29

Liu, Z., and F. G. A. Al-Bermani. "A return mapping algorithm for plane stress and degenerated shell plasticity." Structural Engineering and Mechanics 3, no. 2 (1995): 185–92. http://dx.doi.org/10.12989/sem.1995.3.2.185.

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30

Chung, Jayhoon, and Lew Rabenberg. "Mapping of electrostatic potentials within core-shell nanowires by electron holography." Applied Physics Letters 88, no. 1 (2006): 013106. http://dx.doi.org/10.1063/1.2159560.

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31

Suleiman, S., S. Haddad, and H. Suman. "Mapping of the interacting boson model 4 into the shell model." Europhysics Letters (EPL) 59, no. 3 (2002): 351–56. http://dx.doi.org/10.1209/epl/i2002-00201-y.

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32

Schulte, Patrick, and Fabian Steiner. "Divergence-Optimal Fixed-to-Fixed Length Distribution Matching With Shell Mapping." IEEE Wireless Communications Letters 8, no. 2 (2019): 620–23. http://dx.doi.org/10.1109/lwc.2018.2890595.

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33

Zhang, Hui, Ran Zhang, Yongfeng Geng, et al. "Strain mapping in symmetrical core-shell gold nanorods from HRTEM images." Vacuum 193 (November 2021): 110509. http://dx.doi.org/10.1016/j.vacuum.2021.110509.

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34

Bonatsos, D., and C. Dascaloyannis. "Quantum algebraic symmetries in nuclear physics." HNPS Proceedings 3 (December 5, 2019): 175. http://dx.doi.org/10.12681/hnps.2384.

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The pairing correlations in a single-j nuclear shell are considered. It is proven that a simple boson mapping in terms of q-defonned bosons exists, which reproduces correctly both the commutation relations and the energy up to first order corrections, the parameter q being connected to the size of the shell. An exact solution in terms of a generalized deformed oscillator is also found

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35

Viré, A., J. Xiang, and C. C. Pain. "An immersed-shell method for modelling fluid–structure interactions." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2035 (2015): 20140085. http://dx.doi.org/10.1098/rsta.2014.0085.

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The paper presents a novel method for numerically modelling fluid–structure interactions. The method consists of solving the fluid-dynamics equations on an extended domain, where the computational mesh covers both fluid and solid structures. The fluid and solid velocities are relaxed to one another through a penalty force. The latter acts on a thin shell surrounding the solid structures. Additionally, the shell is represented on the extended domain by a non-zero shell-concentration field, which is obtained by conservatively mapping the shell mesh onto the extended mesh. The paper outlines the

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36

Wang, D., W. H. Zhang, Ji Hong Zhu, J. G. Yang, and M. M. Zhang. "Buckling Optimization of Perforated Curved Shells." Materials Science Forum 697-698 (September 2011): 614–17. http://dx.doi.org/10.4028/www.scientific.net/msf.697-698.614.

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Shape optimization design is carried out in the paper aiming at the feature of openings on curved shells to enhance the structural stability and reduce the stress concentration. In order to make sure that the hole boundary curve are always located on the prescribed curved shell, the parametrical mapping method is employed to describe the hole boundary on the curved shells with shape design variables defined in the intrinsic reference domain. Then, different optimization models are established and the specific sensitivity is calculated for buckling optimization. Finally, it concludes from numer

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37

Belyaev, D. A., A. S. Aleksandrov, Yu N. Zuev, et al. "Structure of a shell made from uranium alloyed with iron and germanium after explosive loading." EPJ Web of Conferences 250 (2021): 03003. http://dx.doi.org/10.1051/epjconf/202125003003.

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This paper presents results of metallographic examination of a thick-wall spherical shell from uranium alloyed with iron and germanium. This shell is recovered after low-level explosive loading. Light microscopy, hardness measurement, scanning electron microscopy and X-Ray diffraction study were used to investigate the meridional section of the test shell as this section most completely exhibits the whole variety of structural features associated with explosive loading of the material. Processing, presentation, and analysis of experimental data on volumetric distribution of studied physical qu

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38

Wittkowski, M., D. A. Boboltz, K. Ohnaka, T. Driebe, and M. Scholz. "The Mira star S Ori: SiO maser shells related to the stellar photosphere, the molecular layers, and the dust shell at three epochs." Proceedings of the International Astronomical Union 3, S242 (2007): 246–50. http://dx.doi.org/10.1017/s1743921307013075.

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AbstractWe present recent results from our project of concurrent radio and infrared interferometry of oxygen-rich Mira stars. Our pilot study on the Mira variable S Ori included coordinated VLBA mapping of the v=1, J=1-0 43.1 GHz and v=2, J=1-0 42.8 GHz SiO maser radiation at one epoch and concurrent near-infrared K-band interferometry to constrain the stellar photospheric diameter. We recently obtained new maps of these SiO maser transitions toward S Ori at three additional epochs with the VLBA and concurrent mid-infrared interferometric data with VLTI/MIDI. The MIDI data are analyzed using r

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39

Amarie, Sergiu, Paul Zaslansky, Yusuke Kajihara, Erika Griesshaber, Wolfgang W. Schmahl, and Fritz Keilmann. "Nano-FTIR chemical mapping of minerals in biological materials." Beilstein Journal of Nanotechnology 3 (April 5, 2012): 312–23. http://dx.doi.org/10.3762/bjnano.3.35.

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Methods for imaging of nanocomposites based on X-ray, electron, tunneling or force microscopy provide information about the shapes of nanoparticles; however, all of these methods fail on chemical recognition. Neither do they allow local identification of mineral type. We demonstrate that infrared near-field microscopy solves these requirements at 20 nm spatial resolution, highlighting, in its first application to natural nanostructures, the mineral particles in shell and bone. "Nano-FTIR" spectral images result from Fourier-transform infrared (FTIR) spectroscopy combined with scattering scanni

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40

Harun, Zawati, Nazri Mohd Nawi, Mohd Faizal Batcha, and David Gethin. "Modeling of Layering Ceramic Shell Mould." Applied Mechanics and Materials 232 (November 2012): 548–52. http://dx.doi.org/10.4028/www.scientific.net/amm.232.548.

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This paper presents the modeling the drying process of shell mould layering process for the ceramic shell mould fabrication process. As this process involves the repeated drying of the different wetted/saturated layers, therefore modeling of this phenomena involve a sequent approach to tackle the whole development of shell mould layering process. In this work an Ab-Initia approach was selected as the best simulation technique to map the drying mechanism. Saturation or moisture content was selected as the best parameter that will represent the drying of layering process. Using FEM with quadrila

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41

Andriichuk, О. V., and S. O. Uzhehov. "THE FRACTURE TOUGHNESS OF THIN-WALLED COVER SHELLS HYPERBOLIC PARABOLOID SHAPED OF FERROCEMENT AND STEEL FIBER CONCRETE UNDER THE ACTION OF OPERATING LOADS." Ресурсоекономні матеріали, конструкції, будівлі та споруди, no. 37 (January 30, 2020): 89–96. http://dx.doi.org/10.31713/budres.v0i37.334.

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Experimental research of new materials and structures with improved parameters of strength, fracture toughness, bearing capacity and their lifetime in comparison with typical elements is an actual problem of building science.Nowadays there is a trend to design and use for buildings covering the new design solutions as the thin shells. One of the types of thin shells are Gaussian shells with negative curvature. It’s worth to note that in the last decade, a considerable number of researches of thin-walled structures made of steel fiber reinforced concrete were conducted, which confirmed the effi

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42

Ahmad, Waqar, and Greg J. E. Hill. "A classification strategy for mapping trochus shell habitat in Torres Strait, Australia." Geocarto International 9, no. 3 (1994): 39–47. http://dx.doi.org/10.1080/10106049409354458.

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43

Thamburaj, Priya, and J. Q. Sun. "Modal Analysis of a Non-Circular Cylindrical Laminated Shell Using Conformal Mapping." Journal of Sandwich Structures & Materials 3, no. 1 (2001): 50–74. http://dx.doi.org/10.1106/glmv-n1em-y6df-e3nv.

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44

Takizawa, Kenji, Tayfun E. Tezduyar, and Takafumi Sasaki. "Correction to: Isogeometric hyperelastic shell analysis with out-of-plane deformation mapping." Computational Mechanics 65, no. 1 (2019): 267–68. http://dx.doi.org/10.1007/s00466-019-01793-1.

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45

Skouras, L. D., P. Van Isacker, and M. A. Nagarajan. "A democratic mapping between the shell model and the interacting boson model." Nuclear Physics A 516, no. 2 (1990): 255–75. http://dx.doi.org/10.1016/0375-9474(90)90308-9.

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46

Lin, Guosong, Jing Li, S. Jack Hu, and Wayne Cai. "A Computational Response Surface Study of Three-Dimensional Aluminum Hemming Using Solid-to-Shell Mapping." Journal of Manufacturing Science and Engineering 129, no. 2 (2006): 360–68. http://dx.doi.org/10.1115/1.2515430.

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Hemming is a manufacturing process of folding a panel onto itself or another sheet. Quality of hemming is characterized by geometry and formability. This paper presents a response surface study of three-dimensional (3D) curved-surface-curved-edge hemming of an aluminum alloy, AA6111-T4, using finite-element (FE) analysis. Solid elements and explicit FE solver are used for simulations of flanging, pre- and final hemming, and shell elements with implicit solver are deployed for springback prediction. A novel procedure called “solid-to-shell mapping” is developed to bridge the solid elements with

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47

Lingeshwar Reddy, Kumbam, Neeraj Prabhakar, Jessica Rosenholm, and Venkata Krishnan. "Core-Shell Structures of Upconversion Nanocrystals Coated with Silica for Near Infrared Light Enabled Optical Imaging of Cancer Cells." Micromachines 9, no. 8 (2018): 400. http://dx.doi.org/10.3390/mi9080400.

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Optical imaging of cancer cells using near infrared (NIR) light is currently an active area of research, as this spectral region directly corresponds to the therapeutic window of biological tissues. Upconversion nanocrystals are photostable alternatives to conventional fluorophores. In our work, we have prepared upconversion nanocrystals of NaYF4:Yb/Er and encapsulated them in silica to form core-shell structures. The as-prepared core-shell nanostructures have been characterized for their structure, morphology, and optical properties using X-ray diffraction, transmission electron microscopy co

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48

Koumoulos, Elias P., Dimitris A. Dragatogiannis, Ioannis A. Kartsonakis, Evangelia Karaxi, Thomas Kehagias, and Costas A. Charitidis. "Nanomechanical performance of protective coatings reinforced with core/shell composite materials." International Journal of Structural Integrity 7, no. 5 (2016): 671–89. http://dx.doi.org/10.1108/ijsi-10-2015-0051.

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Purpose The purpose of this paper is to focus on the investigation of nanomechanical behavior of new types of metal alloys protective coatings. For this purpose, poly(n-butylacrylate) was synthesized via activators regenerated by electron transfer-atom transfer radical polymerization and mixed with epoxy resins, and microcomposites. Design/methodology/approach Multi-layered coatings were applied on hot dip galvanized steel via a baker film applicator. Every layer containing the aforementioned copolymer differs in the proportion of the epoxy resin resulting in the production of a coating with a

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Zouari, Wajdi, M. Elhadrouz, and T. Ben Zineb. "Development of a Ferroelectric Shell Finite Element." Advances in Science and Technology 56 (September 2008): 57–63. http://dx.doi.org/10.4028/www.scientific.net/ast.56.57.

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Ferroelectricity is the non-linear behaviour exhibited by piezoelectric ceramics, especially in the application of high electric field. Actually, the demand for numerical tools taking into account this non linear phenomenon is increasing to reliably design applications using piezoelectric ceramics. In this context, a shell finite element based on the Reissner/Mindlin's theory and integrating a bi-dimensional macroscopic constitutive law for domain switching effects (ferroelectricity) is developed. This element is implemented into the finite element code ABAQUS using the subroutine UEL (User EL

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Reaz, Mahmud, Ariful Haque, and Kartik Ghosh. "Synthesis, Characterization, and Optimization of Magnetoelectric BaTiO3–Iron Oxide Core–Shell Nanoparticles." Nanomaterials 10, no. 3 (2020): 563. http://dx.doi.org/10.3390/nano10030563.

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Improvement of magnetic, electronic, optical, and catalytic properties in cutting-edge technologies including drug delivery, energy storage, magnetic transistor, and spintronics requires novel nanomaterials. This article discusses the unique, clean, and homogeneous physiochemical synthesis of BaTiO3/iron oxide core–shell nanoparticles with interfaces between ferroelectric and ferromagnetic materials. High-resolution transmission electron microscopy displayed the distinguished disparity between the core and shell of the synthesized nanoparticles. Elemental mapping and line scan confirmed the fo

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