Materials Literature
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An air bubble driven by ultrasound can become shape-unstable through a parametric instability. We report time-resolved optical observations of shape oscillations (mode n=2 to 6) of micron-sized single air bubbles. The observed mode number n was found to be linearly related to the ambient radius of the bubble. Above th…
Hierarchical dendritic gold microstrutures (HDGMs) with secondary and tertiary branches are directly electrodeposited on an indium tin oxide (ITO) substrate without the use of any templates, surfactants, or stabilizers. The effects of electrodeposition potential and HAuCl 4 concentration on the formation of HDGMs and…
We report the first observation of linear magnetoresistance (LMR) in multilayer epitaxial graphene grown on SiC. We show that multilayer epitaxial graphene exhibits large LMR from 2.2 K up to room temperature and that it can be best explained by a purely quantum mechanical model. We attribute the observation of LMR to…
Ag-capped Au nanopillar arrays on a resin supporter (see left upper figure), with a typical adjacent pillar tip gap of 10 nm, show obviously higher surface-enhanced Raman scattering (SERS) sensitivity (right column in red) than that of the bare Au nanopillar array while using 10 nM R6G as probe molecules. The large-ar…
Thermal decomposition of citric acid, trans - and cis -aconitic acid has been studied using the TG-MS, TG-FTIR and DSC techniques. The measurements were carried out in an argon atmosphere over a temperature range of 293–673 K. The influence of the acid structures and configurational geometry on stability of the transi…
Abstract The detonation nanodiamond is a versatile low‐cost nanomaterial with tunable properties and surface chemistry. In this work, it is shown how the application of nanodiamond (ND) can greatly increase the performance of electrochemically active polymers, such as polyaniline (PANI). Symmetric supercapacitors cont…
Abstract An increasing number of applications using ultraviolet radiation have renewed interest in ultraviolet photodetector research. Particularly, solar‐blind photodetectors sensitive to only deep UV (<280 nm), have attracted growing attention because of their wide applicability. Among recent advances in UV detec…
p -type BiCuSeO, a layered oxyselenide composed of conductive (Cu2Se2)2− layers alternately stacked with insulating (Bi2O2)2+ layers, shows an enhancement of the electrical conductivity after substituting Bi3+ by Sr2+, from 470 S m−1 (BiCuSeO) to 4.8×104 S m−1 (Bi0.85Sr0.15CuSeO) at 293 K. Coupled to high Seebeck coef…
A unique Eu3+/Tb3+ luminescent self-referencing nanothermometer allowing absolute measurements in the 10–350 K temperature range and sub-micrometer spatial resolution is reported (see Figure). It has up to 4.9%·K−1 temperature sensitivity and high photostability for long-term use. The combination of molecular thermome…
Gold nanostars are multibranched nanoparticles with sharp tips, which display extremely interesting plasmonic properties but require optimization. We present a systematic investigation of the influence of different parameters on the size, morphology, and monodispersity of Au nanostars obtained via seeded growth in con…
MoleCoolQt is a molecular viewer designed to be a useful tool for charge-density science. Features include the visualization of local-atomic coordinate systems in multipole refinements based on the Hansen and Coppens formalism Residual peaks and holes show up next to the atoms of the asymmetric unit if they are calcul…
Microfibrillated cellulose was utilized at low concentrations as a filler material, added prior to free radical polymerization, in cross-linked superabsorbent polysodium acrylate hydrogels. The effect of microfibrillated cellulose concentration on equilibrium swelling, shear modulus after synthesis, and shear modulus…
The crystal structure of the compound FeOCl with the orthorhombic space group Pmmn was determined by Goldsztaub in 1934 [1]. The magnetic phase transition at T N 80 K has been studied by several authors [2][3][4]. Here, we present temperature-dependent X-ray diffraction studies of this transition. With synchrotron rad…
The low-temperature phase transition of the Zn 6 Sc cubic 1/1 approximant [1] has been investigated by X-ray diffraction.It is a crystalline approximant to a recently discovered quasicrystal Zn 88 Sc 12 [2] and has a bcc lattice composed of a Tsai-type cluster with an orientationally disordered Zn tetrahedra at the ce…
The ultrafast pulses from X-ray free-electron lasers have opened up a new form of protein nanocrystallography. In this "diffract and destroy" method [1,2] the specimen is completely vaporized by the intense focused pulse but that destruction only happens after the duration of the pulse without affecting the recorded d…
Poly(vinylidene fluoride) (PVDF) electrospun membranes are obtained from a 20% w/w solution of the polymer in dimethyl formamide. Processing parameters are systematically changed to analyze their influence on fiber morphology, fiber orientation, and on the crystallinity and crystal phase of the membranes. The PVDF con…
Abstract A novel flame retardant (SPDH) containing phosphorus was synthesized through the reaction of 10‐(2, 5‐dihydroxyphenyl)‐9, 10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO‐HQ) and synthesized intermediate product 3, 9‐dichloro‐2, 4, 8, 10‐tetraoxa‐3, 9‐diphosphaspiro(5.5)undecane‐3, 9‐dioxide (SPDPC). Th…
Abstract The intercalation of sodium valproate, a hygroscopic antiepileptic drug, was successful for the first time in the interlayer region of nitrate-type LDH simply by mixing both powders in a mortar at room temperature. The addition of a small amount of water accelerated the reaction.
Nanomaterials are being incorporated into many biological applications for use as therapeutics, sensors, or labels. Silver nanomaterials are being utilized for biological implants and wound dressings as an antiviral material, whereas gold nanomaterials are being used as biological labels or sensors due to their surfac…
Abstract The properties of the crystalline L ‐alanine have been attracting attention for a very long time, and there is much controversy in the results already reported. One of the most interesting problems is that of the localization of vibrational energy and the micro‐transitions (named ‘breathers’ by Barthes et al.…