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  • Abstract
  • Zhdanov2015, author={Zhdanov, Vladimir P.}, title={Ostwald ripening of charged supported metal nanoparticles: Schottky model}, journal={Physica E-Low-Dimensional Systems & Nanostructures}, issn={1386-9477}, volume={71}, pages={130-133}, abstract={Due to high surface area, supported metal nanoparticles are thermodynamically prone to sintering. (chalmers.se)
  • Catalytic
  • Catalytic Performance of Metal Nanoparticles Supported by Ceramic. (ingentaconnect.com)
  • More recently, it has been observed that alloying gold with a second metal greatly enhances the catalytic efficacy. (rsc.org)
  • New catalytic materials obtained by careful control of the morphology of the metal nanoparticles and their use under solvent -free conditions all contribute to the latest developments. (rsc.org)
  • The research, completed in Mpourmpakis' Computer-Aided Nano and Energy Lab (C.A.N.E.LA.), is funded through a National Science Foundation CAREER award and bridges previous research focused on designing nanoparticles for catalytic applications. (phys.org)
  • We wanted to investigate not just the catalytic applications of nanoparticles , but to make a step further and understand nanoparticle stability and formation. (phys.org)
  • Now that we have a more complete understanding of this stability, we can better tailor the nanoparticle morphologies and in turn properties, to applications from biolabeling of individual cells and targeted drug delivery to catalytic reactions, thereby creating more efficient and sustainable production processes. (phys.org)
  • Metal complexes bearing N-heterocyclic carbene ligands (NHC ligands) have been successfully used in a number of catalytic reactions. (phys.org)
  • advances
  • In the Science Advances paper, the researchers present an experimental X-ray total structure determination and theoretical optimization and analysis of the atomic arrangement in the nanoparticle whose chemical formula is (TOA) 3 AuAg 16 (TBBT) 12 , where TBBT (4-tert-butylbenzenethiol) denotes the organic thiol ligand molecules, and TOA (tetraoctylammonium) serves as a counterion. (nanowerk.com)
  • 2017
  • Michael G. Taylor et al, Thermodynamic stability of ligand-protected metal nanoclusters, Nature Communications (2017). (phys.org)
  • atomic
  • Metal nanoparticles capped by organic ligands have fundamental and applied significance for understanding the physical and chemical principles controlling the assembly and atomic organization in nanocrystalline materials, and to their potential usage in fields as quantum dots, sensors, nanocatalysts, biomedical imaging, nanocrystalline superlattices and plasmonics, said Uzi Landman, Regent s Professor and F.E. Callaway Chair in the Georgia Tech School of Physics. (nanowerk.com)
  • The atomic constituents in such stable nanoparticles are organized in structures that differ from the corresponding bulk atomic arrangements of the constituent metals. (nanowerk.com)
  • excitation
  • Prof Xu said, "Enhanced two-photon excitation provides the Au-Ag nanoparticles with strong photo-thermal effects and superior antibacterial activity . (phys.org)
  • Chemistry professor Jie Zheng and graduate student Chen Zhou of the University of Texas, Dallas, reported that metal nanoparticles can be used as universal probes for five types of microscopy-bright field, dark field, fluorescence, Raman, and two-photon excitation. (acs.org)
  • alloy
  • Surface-modified magnetic Ni2.33Fe alloy nanoparticles were prepared using a hydrothermal method. (environmental-expert.com)
  • The findings might also have broad influence on not only metal dusting and carburization, but also in other research areas such as alloy development and surface coatings for high-temperature fuel cell applications. (phys.org)
  • SERS
  • We present a microscopic theory of quantum-size effects in surface-enhanced Raman scattering (SERS) from molecules adsorbed on small metal nanoparticles. (nsti.org)
  • continuous
  • A network of continuous metal nanoparticles allow the carbon to dissolve and diffuse through the protective oxide scales without the need of a crack or a pore. (phys.org)
  • Cole JJ, Lin EC, Barry CR, Jacobs H (2009) Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge. (springer.com)
  • efficacy
  • Metal nanoparticles have shown promise in improving the efficacy of radiotherapy but there is a need to find cheaper and safer alternatives for therapeutic use. (healthcanal.com)
  • To test the efficacy of bismuth, Mr Alqathami placed the nanoparticles inside a detector developed by his team to measure the radiation dose in three dimensions. (healthcanal.com)
  • microscopy
  • The development of liquid cells for transmission electron microscopy (TEM) has enabled direct observation of nanoparticle growth in a liquid phase. (rsc.org)
  • Metal nanoparticles can be used for imaging cancer cells with fluorescence microscopy. (acs.org)
  • A new type of nanoparticle works as a label for five types of microscopy. (acs.org)
  • In this work, we use dark-field optical microscopy ( DFM ) and hyper spectral imaging (HSI) to study the interactions of single Ag and Au nanoparticles (NPs) with Hg 2+ in real time, at room temperature (25 °C). NPs were immobilized on glass substrates using 3-aminopropyltrimethoxysilane (APTMS) as the anchoring agent. (rsc.org)
  • synergistic
  • Au-Ag core-shell nanoparticles for simultaneous bacterial imaging and synergistic antibacterial activity, Nanomedicine: Nanotechnology, Biology and Medicine (2016). (phys.org)
  • luminescent metal
  • A further understanding of the design of renal-clearable luminescent metal NPs and their metabolic behavior in the body is important to achieve their clinical transition and extend their bioapplications in disease theranostics. (rsc.org)
  • We also summarize the current disease-related applications of these renal-clearable luminescent metal NPs in tumor targeting, kidney disease and antimicrobial investigations after a discussion of their biological behavior including the pharmacokinetics and biodistribution. (rsc.org)
  • Finally, we provide perspectives on the current challenges and upcoming chances for renal-clearable luminescent metal NPs. (rsc.org)
  • reaction
  • In this article, we summarize recent progress in metal-nanoparticle-initiated liquid-phase chemiluminescence, including reaction systems, mechanisms, and their applications in chemiluminescence-based bioassays, especially for immunoassays, DNA assays, aptamer-based assays, high-performance liquid chromatography or capillary electrophoresis analysis, and flow injection analysis. (springer.com)
  • diffuse
  • Carbon can easily diffuse through the metals and create a path for carbon atom transport which does not involve defects in the scale. (phys.org)
  • structures
  • Despite a very similar metal dispersion, different structures are revealed depending on the second metal, with alloyed systems being preferred in the case of Pd, Pt and Cu, and core-shell in the case of Ru. (rsc.org)
  • copper
  • Furkawa S, Amakawa T, Adachi K (2002) Effects of copper vapor on heat transfer from atmospheric nitrogen plasma to a molten metal anode. (springer.com)
  • applications
  • In recent years, there has been an increasing interest in liquid cell TEM and its applications include real time imaging of nanoparticles, biological materials, liquids, and so on. (rsc.org)
  • Comprehensive summary of metal nanoparticle (NP)-involved chemiluminescence (CL) systems and their applications. (springer.com)
  • nanostructures
  • Results suggest the existence of powerful design criteria for the formation of metal-based nanostructures from designer blocked macromolecules. (wur.nl)
  • ligands
  • A ligand is a molecule that binds to metal atoms to form metal cores that are stabilized by a shell of ligands, and so understanding how they contribute to nanoparticle stabilization is essential to any process of nanoparticle application. (phys.org)
  • The novelty of our contribution is that we revealed that for experimentally synthesizable nanoclusters there has to be a fine balance between the average bond strength of the nanocluster's metal core, and the binding strength of the ligands to the metal core," he said. (phys.org)
  • Moreover, the metal nanoparticles are capped by sulfur-containing ligands, whose bonding to the metal constituents further complicates the structural predictions, Landman noted. (nanowerk.com)
  • different
  • A production rate of sub 200 nm particles from 20 up to 2,500 mg/h has been realized for the different metals. (springer.com)
  • Free Mechanical Vibrations Determination of download from bioimaging to biosensors noble metal, sort different, and invicem video from targeted sects. (sftv.org)
  • Specifically
  • Specifically, they worry that nanoparticles alter the bioavailability, or how much your body can absorb of a substance, and may cause unforeseen safety or health issues that aren't present in traditionally manufactured foods. (prevention.com)
  • electrons
  • Namely, the spillout of delocalized sp-electrons beyond the classical nanoparticle boundary results in an incomplete embedding of s-electron distribution in the background of localized d-electrons whose density profile follows more closely the classical shape. (nsti.org)
  • Dr. Mpourmpakis explained that previous theories describing why nanoclusters stabilized at specific sizes were based on empirical electron counting rules - the number of electrons that form a closed shell electronic structure, but show limitations since there have been metal nanoclusters experimentally synthesized that do not necessarily follow these rules. (phys.org)
  • When a nanoparticle is much smaller than the wave length of light, coherent oscillation of the conduction band electrons induced by interaction with an electromagnetic field. (slideserve.com)
  • When the metal nanoparticle is larger than the ~30 nm, the electrons oscillating with the light is not perfectly in phase. (slideserve.com)
  • composition
  • Alternatively, solution-based methods, such as electrodeposition, are relatively inexpensive and can produce ultrathin metal nanoparticles and micrometer-thick films, depending on plating condition and bath composition [ 5 ]. (hindawi.com)
  • interaction
  • In real systems, this charge is often associated with the metal support interaction and can be interpreted in the framework of the Schottky model. (chalmers.se)