Materials Literature
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Free-standing Au−polyelectrolyte brush bilayer objects were fabricated by a facile route based on microcontact printing and chemical etching. Patterned poly(methacryloxyethyltrimethylammonium chloride) (PMETAC) brushes were grown on a gold-coated silicon wafer, which was etched to produce free-standing bilayer objects…
A pixel isolated liquid crystal display was fabricated by polarization-selective anisotropic photoreaction of a prepolymer containing a cinnamate oligomer. The cinnamate oligomer was mainly distributed on the surface region of a UV-cured polymer wall. Anisotropic photo-dimerization of cinnamate moiety was achieved by…
Fabrication of highly ordered superstructures of single-walled carbon nanotubes (SWNTs) is of great interest for a wide range of potential applications. Here, we investigate the selective distribution of individually isolated SWNTs (1D nanoparticles with very large aspect ratios) in Pluronic P84/water/ p -xylene terna…
Abstract This study deals with the optical properties and plasticizer migration properties of vital wheat gluten (WG) films cast at pH 4 and 11. The films contained initially 8, 16, and 25 wt % glycerol and were aged at 23°C and 50% relative humidity for at least 17 weeks on a paper support to simulate a situation whe…
In magnetic resonance imaging (MRI), paramagnetic complexes are utilized as contrast agents. Much attention has been paid to the development of new contrast agents responsive to pH, temperature or concentration of various components of body liquids. We report a new type of MRI probe sensing the concentrations of calci…
Combined small- and wide-angle X-ray scattering (SAXS/WAXS) is a powerful technique for the study of materials at length scales ranging from atomic/molecular sizes (a few angstroms) to the mesoscopic regime ( approximately 1 nm to approximately 1 microm). A set-up to apply this technique at high X-ray energies (E > 50…
The origin of vibrational pumping in surface-enhanced Raman scattering is investigated applying subpicosecond Raman spectroscopy. We observe selective excitation of distinct fingerprint modes resulting in a pronounced nonequilibrium population distribution followed by a decay with a common time constant for all vibrat…
A large isothermal magnetic entropy change with a peak value of 17.7 J kg −1 K −1 has been observed across the austenite–martensite phase transition in Ni 50 Mn 33.66 Cr 0.34 In 16 alloy near 270 K. In comparison with the parent Ni 50 Mn 34 In 16 alloy this temperature regime of the peak in isothermal entropy change i…
Various studies have shown that various cell types can be labeled with iron oxide particles and visualized by magnetic resonance imaging (MRI). However, reported protocols for cell labeling show a large variation in terms of labeling dose and incubation time. It is therefore not clear how different labeling protocols…
Abstract\nElectron correlations in three electron emission associated with innershell photoionization are investigated for the first time through a combined theoretical and experimental approach. Namely, different kinds of Post Collisional Interactions (PCI) occurring in the decay of Argon 2p holes by emission of two…
A quantitative description of droplet evaporation is important to aerosol research for nanofabrication, spray drying, fuel combustion, pollution control, and respiratory medical treatments. Evaporation is a moving-boundary problem with coupled mass and heat transport. An explicit finite-difference methodology and comp…
Abstract Here we report the effect of various capping ligands on the optical properties and photostability of CdTe quantum dots in aqueous solutions. Ligand exchange procedure is used to prepare water dispersive CdTe nanocrystals capped with aminoethanethiol, 3-mercaptopropionic and dihydrolipoic acids. The dynamics o…
We have synthesized Pt@silica/nickel phyllosilicate and Pt@silica yolk-shell nanostructures from NiPt@silica core-shell particles by simple chemical treatments. Silica coating of the NiPt alloy nanoparticles via the microemulsion method yielded spherical NiPt@silica core-shell nanoparticles with an average core diamet…
Single-crystal diamond is a material with great potential for the fabrication of X-ray photon beam-position monitors with submicrometre spatial resolution. Low X-ray absorption combined with radiation hardness and excellent thermal-mechanical properties make possible beam-transmissive diamond devices for monitoring sy…
There are many important processes where the stability of nanoparticles can change due to changes in solution environment. These processes are often difficult to study under controlled changes to the solution conditions. Dynamic light scattering was used to measure the initial kinetics of aggregation of carboxylated p…
The complexes [Cu(kappa(2)-Ph(2)PC(6)H(4)(o-OMe))(2)(CH(3)CN)](BF(4)) (1) and [CuCl(Ph(2)PC(6)H(4)(o-OMe))(2)] (2) have been prepared by treating [Cu(CH(3)CN)(4)](BF(4)) or CuCl with two equivalents o-(diphenylphosphino)anisole (Ph(2)PC(6)H(4)(o-OMe)) at room temperature, respectively. The reaction of 1 and (PPN)(NO(2…
We present a method to fabricate micropatterns of a self-assembled block copolymer droplets with hierarchically ordered nanostructures by controlling solvent-assisted wetting of the droplets. This method is based on transfer-printing the micropatterned dewetted droplets formed onto a topographic poly(dimethylsiloxane)…
A novel multiscale model is developed for describing the damping characteristics of polymeric composites containing aligned or randomly oriented carbon nanotube (CNT) ropes. This is the first known model of damping behavior of CNT-based composites incorporating length scales from atomic to structural. The shear streng…
The behaviour of soap films pushed through tubes at large velocities, up to several metres per second, is investigated in this paper. The film shape deviates from its equilibrium configuration perpendicular to the walls and gets curved downstream. A simple model relates the radius of curvature of the film to the frict…
The detailed magnetic behavior of K(3)[Ru(2)(CO(3))(4)].xH(2)O (x = 2) reveals that it has a 2-K magnetization at 5 T of 11 125 emu Oe/mol, a 50-Oe coercive field, and a remnant magnetization of 670 emu Oe/mol. It magnetically orders as a canted ferrimagnet below 4.2 K, and is a rare example of a magnetically ordered…