Materials Literature
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Theoretical and experimental approaches were employed to study the effect of aggregation on the affinity between nanoparticles (NPs) and a flat surface that is quantified by the attachment efficiency. Computer simulations were used to generate virtual aggregates formed via either diffusion limited cluster aggregation…
While the cytotoxic effects of titanium dioxide (TiO(2)) nanoparticles have been under intense investigation, the molecular mechanisms of this cytotoxicity remain unknown. Here we investigated the influence of oncogenic transformation and a major apoptotic signaling pathway on cellular responses to TiO(2) nanoparticle…
Reduced sheet resistance and longer film stability of oCVD (oxidative chemical vapour deposition) PEDOT films were achieved by including a post-process acid rinse step in the production of the thin films. PEDOT films were rinsed in multiple concentrations of hydrobromic acid, sulfuric acid, and hydrochloric acid to te…
A hierarchically porous monolith with macro- and meso-pores was synthesized via a sol–gel and phase separation process. Due to the surface modification by organic silanes, the wettability of the silica material was effectively controlled. A series of hydrophobic porous silica monoliths (HPSM) were obtained. Using a “r…
Porous yttria‐stabilized zirconia ( YSZ ) ceramics were fabricated using tert‐butyl alcohol ( TBA )‐based gelcasting with monodisperse polymethylmethacrylate ( PMMA ) microspheres as both pore‐forming agent and lubricant agent. The TBA ‐based slurry of 50 vol% solid loading with excellent rheological properties approp…
Three new molecular building blocks 1 a-c for supramolecular polymerization are described that feature two dipolar merocyanine dyes tethered by p-xylylene spacers. Concentration- and temperature-dependent UV/Vis spectroscopy in chloroform combined with dynamic light scattering, capillary viscosimetry and atomic force…
We demonstrate the formation of a hybridized plasmon-exciton state exhibiting strong exciton-plasmon coupling in ZnO/Zn(0.85)Mg(0.15)O single quantum wells capped with arrays of Al nanodiscs. Tuning the quantum-well width and the diameter and pitch of the Al nanodisc arrays facilitates a transition from the weak-coupl…
Composites of unmodified or oxidized carbon nano-onions (CNOs/ox-CNOs) with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) are prepared with different compositions. By varying the ratio of PEDOT:PSS relative to CNOs, CNO/PEDOT:PSS composites with various PEDOT:PSS loadings are obtained and the cor…
In the present work, multiphase polycrystalline BTO nanorods were synthesized using template‐assisted sol–gel deposition and their structural evolution was studied using thermo Raman spectroscopy, X‐ray diffractometry and high‐resolution transmission electron microscopy (HRTEM). In the BTO nanorods, the tetragonal pha…
We designed and synthesized a novel double activatable prodrug system (drug-linker-deactivated photosensitizer), containing a photocleavable aminoacrylate-linker and a deactivated photosensitizer, to achieve the spatiotemporally controlled release of parent drugs using visible light. Three prodrugs of CA-4, SN-38, and…
First-principles density functional theory (DFT) is used to investigate the electronic structure of $\ensuremath{\beta}$-MnO${}_{2}$. From collinear spin-polarized calculations we find that DFT+$U$${}_{\mathrm{eff}}$ predicts a gapless ferromagnet in contrast with experiment, which indicates an insulating antiferromag…
Abstract Shear transparent cellulose free‐standing thin films can develop iridescence similar to that found in petals of the tulip “Queen of the Night.” The iridescence of the film arises from the modulation of the surface into bands periodically spread perpendicular to the shear direction. Small amounts of nanocrysta…
The slow crack growth parameters of several transparent armor ceramics were measured as part of a program to lighten next generation spacecraft windows. Transparent magnesium aluminate (spinel, MgAl 2 O 4 ) and AlON exhibit superior slow crack resistance relative to fused silica, which is the historical material of ch…
Abstract In this study, the effect of nanoparticle on hygroscopic thickness swelling rate of composites from hemp fiber and recycled plastic was investigated. To meet this objective, hemp fiber was mixed with either virgin or recycled polypropylene (PP) at 50% by weight fiber loading. The samples were made by melt com…
Spinel NiFe2O4 nanocrystals have been obtained by means of a novel composite-hydroxide-salt-mediated approach, which is based on a reaction between metallic salt and metallic oxide in the solution of composite-hydroxide-salt eutectic at ~225 ºC and normal atmosphere without any organic dispersant or capping agent. The…
Strain confinement in heterostructured films significantly affects ionic conductivity of the electrolytes for solid oxide fuel cells based on a multi-layered design strategy. Nearly ideal tensile strain can be achieved by a dedicated manipulation of the lattice mismatch between adjacent layers and fine control of the…
Related to their size and shape, plasmonic excitations of metal particles occur in an extremely broad spectral range from visible down to radio frequencies. They can couple to other kinds of excitation with a similar energy, which in the infrared (IR) is origin of vibrational signal enhancement. In this study, we reco…
Poly(L-lactide) (PLLA) is often regarded as tough and brittle while poly(1,3-trimethylene carbonate) (PTMC) is rather considered as a rubbery polymer. In an effort to improve the mechanical properties – especially ductility – of PLLA and thus to widen its field of applications, PLLA–PTMC diblock and triblock copolymer…
A monolayer of ${\text{MoS}}_{2}$ has a noncentrosymmetric crystal structure, with spin-polarized bands. It is a two-valley semiconductor with the direct gap falling in the visible range of the electromagnetic spectrum. Its optical properties are of particular interest in relation to valleytronics and possible device…
The vast application of fluorescent semiconductor nanoparticles (NPs) or quantum dots (QDs) has prompted the development of new, cheap and safer methods that allow generating QDs with improved biocompatibility. In this context, green or biological QDs production represents a still unexplored area. This work reports th…