Materials Literature
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We study the dynamics of semiflexible Vicsek fractals (SVF) following the framework established by Dolgushev and Blumen [J. Chem. Phys. 131, 044905 (2009)], a scheme which allows to model semiflexible treelike polymers of arbitrary architecture. We show, extending the methods used in the treatment of semiflexible dend…
Tumor suppressor Nore1, its acronym coming from novel Ras effector, is one of the 10 members of the Rassf (Ras association domain family) protein family that have been identified. It is expressed as two mRNA splice variants, Nore1A and a shorter isoform, Nore1B. It forms homo- and heterocomplexes through its C-termina…
The rough or faceted morphology of the solid–liquid interface during solidification of multi-crystalline silicon is discussed in terms of classical crystallographic, energetic and kinetic considerations. This allows establishing diagrams of the interface structure as a function of process parameters. It is shown that…
The recent development of aerosol generated crumpled graphene oxide nanopaper provides a test bed for studying the reactivity of physically deformed graphene-based materials. In this work, we measured the thermal reduction of aerosolized single sheet, crumpled graphene oxide (GO) nanopaper. Online aerosol mass analysi…
Fluorescent nanoparticles have enabled many discoveries regarding how molecular machines function. Quantum dots have been the dominant class of fluorescent nanoparticles but suffer from blinking and from a substantial dark fraction--particles where the fluorescence is never seen--complicating any analysis of biologica…
An ultrabroad-band metamaterial absorber was investigated in mid-IR regime based on a similar model in previous work. The high absorption of metamaterial was obtained in a band of 8–11.7 THz with energy loss distributed in SiO 2 , which is appropriate potentially for solar-cell applications. A perfect absorption peak…
Exposure to carbon nanotubes induces significant changes in cellular biomechanics. Using nanoindentation, it is observed that the exposed cells have significantly higher stiffness when compared to controls, especially at the nuclear region, and significant increases in surface area.
The effect of l -valine on the growth of the l -alanine (011) surface from solution crystallization is studied by combining single-crystal growth experiments and molecular simulation. For the first time, an unusual promotion effect of l -valine on l -alanine crystal growth, after the initial inhibition effect, is foun…
We demonstrate that the degree of hydrogenation of graphene directly controls the grafting density and thus, the layer thickness of grafted polymer brushes synthesized via self-initiated photografting and photopolymerization. Among the tested monomers, only styrene derivatives could be directly grafted onto copper-sup…
The mobility and spatial distribution of photoexcited electrons in CdSe/CdS core/shell nanorods was studied using optical-pump THz-probe spectroscopy. Measurements were conducted on two samples, differing in rod length. After photoexcitation the hole localizes in the CdSe core within a picosecond, while the electron d…
Information about the mechanisms underlying the interactions of nanoparticles with living cells is crucial for their medical application and also provides indications of the putative toxicity of such materials. Here the uptake and intracellular delivery of disc-shaped zeolite L nanocrystals as porous aminosilicates wi…
We present an investigation on a coupled system consists of gold nanoparticles and silicon nanocrystals. Gold nanoparticles (AuNPs) embedded into porous silicon (PSi) were prepared using the electrochemical deposition method. Scanning electron microscope images and energy-dispersive X-ray results indicated that the gr…
A new mechanochemical method for the fast and clean preparation of exchanged layered double hydroxides (LDHs) was designed and tested on compounds with different chemical features, to assess its feasibility and applicability, to optimize yields and reaction speeds, and to identify its potential and limitations. Thanks…
Simvastatin have been shown to induce bone formation and there is currently a urgent need to develop an appropriate delivery system to sustain the release of the drug to increase therapeutic efficacy whilst reducing side effects. In this study, a novel drug delivery system for simvastatin by means of hydrothermally co…
Nonlinear current–voltage properties of CaCu 3 Ti 4 O 12 ceramics were extremely enhanced by doping with Tb . Substitution of Tb to CaCu 3 Ti 4 O 12 resulted in a decrease in grain size due to the ability of Tb ions to inhibit grain boundary mobility. The dielectric properties of CaCu 3 Ti 4 O 12 ceramics were degrade…
Novel A-site ordered perovskites CaPd(3)Ti(4)O(12) and CaPd(3)V(4)O(12) were synthesized under high-pressure and high-temperature of 15 GPa and 1000 °C. These compounds are the first example in which a crystallographic site in a perovskite-type structure is occupied by Pd(2+) ions with a 4d(8) low spin configuration.…
To increase the sensitivity of uncooled thermal sensors in the terahertz (THz) spectral range (1 to 10 THz), we investigated thin metamaterial layers exhibiting resonant absorption in this region. These metamaterial films are comprised of periodic arrays of aluminum (Al) squares and an Al ground plane separated by a t…
The nature of metallicity and the level of electronic correlations in the antiferromagnetically ordered parent compounds are two important open issues for the iron-based superconductivity. We perform a temperature-dependent angle-resolved photoemission spectroscopy study of Fe(1.02)Te, the parent compound for iron cha…
Molecular silver clusters conjugated with DNA act as analyte sensors. Our studies evaluate a type of cluster-laden DNA strand whose structure and silver stoichiometry change with hybridization. The sensor strand integrates two functions: the 3' region binds target DNA strands through base recognition while the 5' sequ…
Homogeneous assemblies of the model peptides at interfaces have been achieved and observed with scanning tunneling microscopy. The dependence of the observed brightness in STM images is analyzed, and the correlation with the peptide residues is proposed. We have also investigated the conformational dynamics of the pep…