Search Results - "Papaefthymiou, Georgia C."

Size-Dependent Magnetic Properties of Single-Crystalline Multiferroic BiFeO3 Nanoparticles by Park, Tae-Jin, Papaefthymiou, Georgia C, Viescas, Arthur J, Moodenbaugh, Arnold R, Wong, Stanislaus S

“…As-prepared, single-crystalline bismuth ferrite nanoparticles show strong size-dependent magnetic properties that correlate with:  (a) increased suppression of…”
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Bifunctional Fe3O4-Ag Heterodimer Nanoparticles for Two-Photon Fluorescence Imaging and Magnetic Manipulation by Jiang, Jiang, Gu, Hongwei, Shao, Huilin, Devlin, Eamonn, Papaefthymiou, Georgia C., Ying, Jackie Y.

“…Fe3O4–Ag heterodimer nanocomposites of tunable sizes are synthesized with high yield under mild conditions, without the loss of high magnetic moment. A…”
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N−H Bond Formation at a Diiron Bridging Nitride by Zhang, Shaoguang, Cui, Peng, Liu, Tianchang, Wang, Qiuran, Longo, Thomas J., Thierer, Laura M., Manor, Brian C., Gau, Michael R., Carroll, Patrick J., Papaefthymiou, Georgia C., Tomson, Neil C.

“…Despite their connection to ammonia synthesis, little is known about the ability of iron‐bound, bridging nitrides to form N−H bonds. Herein we report a linear…”
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Silica-Coated Nanocomposites of Magnetic Nanoparticles and Quantum Dots by Yi, Dong Kee, Selvan, S. Tamil, Lee, Su Seong, Papaefthymiou, Georgia C, Kundaliya, Darshan, Ying, Jackie Y

“…Quantum dots (QDs) and magnetic nanoparticles (MPs) are of interest for biological imaging, drug targeting, and bioconjugation because of their unique…”
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Size- and Composition-Dependent Radio Frequency Magnetic Permeability of Iron Oxide Nanocrystals by Yun, Hongseok, Liu, Xiyu, Paik, Taejong, Palanisamy, Duraivelan, Kim, Jungkwun, Vogel, William D, Viescas, Arthur J, Chen, Jun, Papaefthymiou, Georgia C, Kikkawa, James M, Allen, Mark G, Murray, Christopher B

“…We investigate the size- and composition-dependent ac magnetic permeability of superparamagnetic iron oxide nanocrystals for radio frequency (RF) applications…”
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Magnetic, Electronic, and Structural Characterization of Nonstoichiometric Iron Oxides at the Nanoscale by Redl, Franz X, Black, Charles T, Papaefthymiou, Georgia C, Sandstrom, Robert L, Yin, Ming, Zeng, Hao, Murray, Christopher B, O'Brien, Stephen P

“…We have investigated the structural, magnetic, and electronic properties of nonstoichiometric iron oxide nanocrystals prepared by decomposition of iron(II) and…”
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Combined Mössbauer Spectral and Density Functional Study of an Eight-Coordinate Iron(II) Complex by Long, Gary J, Grandjean, Fernande, Harrop, Todd C, Petroccia, Heather M, Papaefthymiou, Georgia C

“…The iron-57 Mössbauer spectra of the eight-coordinate complex, [Fe(L(N4))2](BF4)2, where L(N4) is the tetradentate…”
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Micromagnetic and morphological characterization of heteropolymer human ferritin cores by Longo, Thomas, Kim, Steve, Srivastava, Ayush K, Hurley, Lauren, Ji, Kaixuan, Viescas, Arthur J, Flint, Nicholas, Foucher, Alexandre C, Yates, Douglas, Stach, Eric A, Bou-Abdallah, Fadi, Papaefthymiou, Georgia C

“…The physical properties of in vitro iron-reconstituted and genetically engineered human heteropolymer ferritins were investigated. High-angle annular…”
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Nanoparticle magnetism by Papaefthymiou, Georgia C.

“…The current status of fundamental physics that govern nanoparticle magnetism is reviewed. Emphasis is placed on studies of the particles’ intrinsic spin…”
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Monolayer Quantum-Dot Based Light-Sensor by a Photo-Electrochemical Mechanism by Nanda, Sitansu Sekhar, Kim, Minjik, Yoo, Sung Jong, Papaefthymiou, Georgia C, Yi, Dong Kee

“…Monolayer nanocrystal-based light sensors with cadmium-selenium thin film electrodes have been investigated using electrochemical cyclic voltammetry tests. An…”
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Functionalization of Graphene Oxide and its Biomedical Applications by Nanda, Sitansu Sekhar, Papaefthymiou, Georgia C., Yi, Dong Kee

“…Graphene oxide (GO) offers interesting physicochemical and biological properties for biomedicine due to its versatility, biocompatibility, small size, large…”
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The Mössbauer and magnetic properties of ferritin cores by Papaefthymiou, Georgia C.

“…Background: Mössbauer and magnetization measurements, singly or in combination, extract detailed information on the microscopic or internal magnetism of…”
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Mechanophysical Cues in Extracellular Matrix Regulation of Cell Behavior by Wang, Tuntun, Nanda, Sitansu Sekhar, Papaefthymiou, Georgia C., Yi, Dong Kee

“…The extracellular matrix (ECM) is a macromolecular network that can provide biochemical and structural support for cell adhesion and formation. It regulates…”
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A comparative Mössbauer study of the mineral cores of human H-chain ferritin employing dioxygen and hydrogen peroxide as iron oxidants by Bou-Abdallah, Fadi, Carney, Elissa, Chasteen, N. Dennis, Arosio, Paolo, Viescas, Arthur J., Papaefthymiou, Georgia C.

“…Ferritins are ubiquitous iron storage and detoxification proteins distributed throughout the plant and animal kingdoms. Mammalian ferritins oxidize and…”
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Size effects on the magnetic behavior of γ-Fe2O3 core/SiO2 shell nanoparticle assemblies by Vasilakaki, Marianna, Gemenetzi, Fevronia, Devlin, Eamonn, Yi, Dong Kee, Riduan, Siti Nurhanna, Lee, Su Seong, Ying, Jackie Y., Papaefthymiou, Georgia C., Trohidou, Kalliopi N.

“…•Effect of core size in nano-assemblies of γ-Fe2O3 core/SiO2 shell morphology is investigated.•Thermal stability is enhanced by increasing magnetic core size…”
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Effect of Phosphate and Ferritin Subunit Composition on the Kinetics, Structure, and Reactivity of the Iron Core in Human Homo- and Heteropolymer Ferritins by Reutovich, Aliaksandra A., Srivastava, Ayush K., Smith, Gideon L., Foucher, Alexandre, Yates, Douglas M., Stach, Eric A., Papaefthymiou, Georgia C., Arosio, Paolo, Bou-Abdallah, Fadi

“…Ferritins are highly conserved supramolecular protein nanostructures that play a key role in iron homeostasis. Thousands of iron atoms can be stored inside…”
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Nanoparticle Architectures Templated by SiO2/Fe2O3 Nanocomposites by Yi, Dong Kee, Lee, Su Seong, Papaefthymiou, Georgia C, Ying, Jackie Y

“…Reverse microemulsion techniques combined with templating strategies have led to the synthesis of four types of nanoparticles. First, homogeneous SiO2-coated…”
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GSK-3 Inhibitors in the Regulation and Control of Colon Carcinoma by Nanda, Sitansu S, Hossain, Md Imran, Ju, Heongkyu, Yi, Dong Kee

“…Glycogen syntheis kinase (GSK-3) inhibitors are novel therapeutic agents for treating various types of cancer, such as breast, lung, and gastric cancer. No…”
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Recent advances in biocompatible semiconductor nanocrystals for immunobiological applications by Nanda, Sitansu Sekhar, Kim, Min Jik, Kim, Kwangmeyung, Papaefthymiou, Georgia C., Selvan, Subramanian Tamil, Yi, Dong Kee

“…[Display omitted] •QDs enabled for promising in vivo diagnostics applications.•QDs have emerged as a versatile tool in immunosensing applications.•QDs showed…”
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Stable Eight-Coordinate Iron(III/II) Complexes by Patra, Ashis K, Dube, Koustubh S, Papaefthymiou, Georgia C, Conradie, Jeanet, Ghosh, Abhik, Harrop, Todd C

“…The chemistry of unusual coordination numbers of transition-metal complexes has been of interest because of their presence in biology and catalytic systems…”
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