Materials Literature
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Well-defined di- and triblock copolymers consisting of ε-caprolactone (CL), L-lactide (LA), and trimethylene carbonate (TMC) were synthesized via "PLA first route" in coordinated anionic ring opening polymerization/copolymerization (CAROP) with tin (II) octoate as catalyst. The desired block structure was preserved by…
Useful coating products may be obtained by chemical valorization (glycolysis) of post consumed poly (ethylene terephthalate) (PET) wastes. Glycolysis of PET waste was carried out using poly (propylene glycol) (PPG) of molecular weight 2000. The depolymerized oligoesters obtained were trans-esterified with Castor oil a…
Cluster formation in many-body systems is very common, yet still not fully understood. We employ direct confocal microscopy to measure the size distribution and reconstruct the shapes of permanent gel clusters formed by sticky colloidal spheres in a two-dimensional (2D) suspension; the linear dimensions of the cluster…
Integration of thermopiles in garments has been performed in this work in different ways. It is shown that textile has a minor effect on power generation, which enables completely hidden and unobtrusive energy harvester. A one-milliwatt thermoelectric generator is then integrated between two layers of a shirt and its…
We study the surface ordering and anchoring behaviour at liquid crystal/air interfaces laden with the semifluorinated alkane C18H37–C12F25. On alkanes, the semifluorinated alkane is known to form Gibbs films exhibiting a sharp transition from a dilute state at higher temperatures to a dense state at lower temperatures…
In this paper, the constitutive behaviour of a rare-earth magnesium alloy ZEK100 sheet is studied at room temperature and over a wide range of strain rates. The tensile data from 1.6 mm thick ZEK100 sheets at quasi-static and high strain rate conditions show strong in-plane anisotropy of tensile properties, such as yi…
The main aim of studies on dynamic behaviour of construction materials at high strain rates is to determine the variation of mechanical properties (strength, plasticity) in function of the strain rate and temperature. On the basis of results of dynamic tests on the properties of constructional materials the constituti…
Creation of nanoparticle (NP) architectures via a self-assembly strategy is the current means to integrate and/or modulate the functionalities of NPs. In this paper, we demonstrate the capability for constructing NP spherical superstructures through the specific interaction between host and guest molecules, for instan…
In this report, Cu(2-x)Se nanoplates with columnar superstructures have been synthesized via a facile, "green", phosphine-free, low-cost colloidal method. An inorganic tin(iv) selenium complex (Sn(2)Se(6))(4-) was attached on the surfaces of Cu(2-x)Se nanoplates directly during the synthesis of Cu(2-x)Se nanoplates. W…
We report on reconfigurable polymeric nanostructures based on ionic interactions between two Fmoc-amino acids coupled to polyoxazoline. The dimension, composition and thermal responsiveness of these structures can be selectively modified by the catalytic action of alkaline phosphatase.
A modified electrochemical route was developed to deposit powdery ZnO nanocrystals. The approach is based on sodium citrate acting as the supporting electrolyte as well as a complex agent, Zn2+ ions resulting from the electro-oxidation of a Zn anode rather than zinc salts, and a H2O–EtOH mixed-solvent as the electroly…
We report the control of the growth mode of Bi(2)FeCrO(6) thin and ultrathin films by either tuning the pulsed laser deposition parameters or by using a buffer layer. The films are epitaxial and the heterostructures exhibit very smooth interfaces, thus eliminating the main obstacle in the realization of tunnel junctio…
The high dispersion found in the literature for the conductivity of Reduced Graphene Oxide (RGO) layers makes it highly desirable to develop fast and non-invasive methods for their characterization. Here we show that Electrostatic Force Microscopy (EFM) is an in situ, fast, and contactless technique to evaluate the co…
As is shown in the literature, surface-enhanced Raman scattering (SERS)-active Ag films obtained by the salting-out of Ag colloids from solutions with some salts, are popularly used to examine the structure of analytes. SERS-active Ag nanoparticles (NPs) demonstrate more significant SERS effects than Au NPs, however,…
A comprehensive analysis of heterogeneous nanostructures based on TiO2 aerogels and Ag nanoparticles (NPs) is reported herein. The experimental techniques engaged along this study enable a multi-scale approach for the characterization of this composite system. The results clearly indicate that an increase of the Ag am…
In this letter, three different negative-index metamaterial designs based on single-particle degenerate dielectric resonators are presented. The resonator designs are realized by introducing high-contrast perturbations to the cavity geometry so as to bring the lowest-order electric and magnetic cavity resonances into…
Pentamerous oligoaniline (POA) was protonated with sulfuric acid to form emeraldine salts (ES) and then intercalated in montmorillonite (MMT) CL120 to develop a functional conductive organo-layered material. The characteristics of the modified clay CL120/ES-POA were analyzed by wide-angle X-ray diffraction (WAXD) to f…
Los hidróxidos dobles laminares (HDLs) son estructuras sintéticas formadas por láminas de hidróxidos metálicos cargadas positivamente que son estabilizadas con aniones interlaminares. La presencia de grupos hidroxilo en las superficies de sus láminas y los aniones intercambiables los hace compuestos ideales para prepa…
Syntheses of 2,3,4,5-tetraphenylcyclopenta-2,4-dienyl benzene derivatives tailored with seven substituents of various lengths and molecular composition were accomplished and their UV-Vis and fluorescence properties investigated. All of the novel fluorescent dyes displayed varying degrees of aggregation-induced emissio…
The ability of a chemiresistor sensor with a polyaniline active layer to detect insect infestation was investigated. The sensor detected various volatile organic compounds produced by plants, emitted as a defense mechanism when attacked by herbivores. This sensor was easy to fabricate and cost only 2 cents per each se…