Materials Literature
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Shape memory alloys (SMAs) are used in several technological applications thanks to their unique properties: superelasticity and shape memory effect. In recent decades, many efforts have been made to improve performance of SMA wires in order to utilize them as thermal actuators for hundreds thousands cycles. Near-equi…
Photoisomerization is an important reaction that confers photoresponsive functionality on nanoparticles. Although photoisomerization of molecules forming self-assembled monolayers on two-dimensional surfaces or three-dimensional clusters has been studied, a detailed picture of interactions of molecules undergoing isom…
Despite the practical need, no models exist to predict contact angles or wetting mode of surfactant solutions on rough hydrophobic or superhydrophobic surfaces. Using Gibbs' adsorption equation and a literature isotherm, a new model is constructed based on the Wenzel and Cassie equations. Experimental data for aqueous…
In this study, we have selectively introduced three types of chemical functional groups, namely nitrophenyl (C6H4NO2), aminophenyl (C6H4NH2) and benzoic acid (C6H4COOH), on the sidewalls of multiwalled carbon nanotubes (MWCNTs) with the aim to find the optimal functionalization of MWCNTs for the most desirable intermo…
In this communication, we report that 9-aryl-1,2-dihydropyrrolo[3,4-b]indolizin-3-one (Seoul-Fluor) can serve as a potential platform for colorful ratiometric fluorescent pH sensors by simple incorporation of pH responsive elements on Seoul-Fluor. Seoul-Fluor-based fluorescent pH sensors allow the emission- and pH-tun…
Algal communities from the Algeti National Park in eastern Georgia were studied between 2005 and 2008. The algal species diversity comes from 77 algological samples and includes 315 species and infraspecies, which belong to 7 taxonomical divisions. Of these findings, 295 species are reported for the first time in the…
The electrical conduction mechanism of mixed conductive perovskite oxides, La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O(3-δ), for cathode materials of solid oxide fuel cells has been investigated from electronic structural changes during oxygen vacancy formation. La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O(3-δ) was annealed under various oxygen p…
Fawley M.W., Fawley K.P. and Hegewald E. 2011. Taxonomy of Desmodesmus serratus (Chlorophyceae, Chlorophyta) and related taxa on the basis of morphological and DNA sequence data. Phycologia 50: 23–56. DOI: 10.2216/10-16.1The green alga Desmodesmus serratus is a common small Desmodesmus species. The highly variable mor…
1,6-Bis(trimethylammonium)hexane bis(trihalides) and mixed bis(trihalides) have been synthesized by treating the corresponding dihydrated halides with molecular dihalogens under gas–solid and solution conditions. Despite the starting halides being non-porous, the trihalide syntheses occur homogeneously, in quantitativ…
Understanding the self-discharge (SDC) mechanism is crucial for obtaining supercapacitors with tunable energy retention. Supercapacitors built with free standing single-walled carbon nanotube (SWNT) macro-films and 1M TEABF4/PC electrolyte exhibit a unique divided potential driving SDC discharge process as demonstrate…
In the present investigation, the crystallization and phase transition behaviours of normal alkane (n-docosane) in microcapsules with a mean diameter of 3.6 μm were studied by the combination of differential scanning calorimetry (DSC), temperature-dependent X-ray diffraction (XRD) and variable-temperature solid-state…
In this study, multilayers from polyethylene imine, heparin and chitosan are prepared at three different pH values of 5, 7 and 9. Water contact angle and quartz microbalance measurements show that resulting multilayers differ in terms of wetting behaviour, layer mass and mechanical properties. The multilayer is then f…
This paper is a review article covering various methods reported on synthesis of ?-SiAlON based ceramic materials and on their net-shape consolidation into radome structures. It also identifies a composition out of a wide-range ?-Si6-zAlzOzN8-z (where z = 0-4.1) solid solution suitable for radome applications and disc…
Eight inorganic-organic hybrid compounds with a formula of [R-Bz-1-APy][PbI(3)] (R-Bz-1-APy(+) = mono-substituted benzylidene-1-aminopyridinium Schiff base derivative; R = m-CN (1), m-CH(3) (2), H (3), p-F (4), p-Cl (5), p-Br (6), o-Cl (7), o-Br (8)) have been synthesized and characterized structurally. The common cha…
Poly(3-hydroxybutyrate) (PHB) is a natural biopolyester accumulated in microbial cells as tiny amorphous granules. The nano- micro-particles have a variety of potential applications and behave differently in different environments. In this work, the in situ crystallization of native PHB granules was investigated under…
Sensorial comfort, usually described as “fabric hand or feel”, is the sensation of how the fabric feels when it is worn next to the skin. This feeling deals with properties of the fabric such as prickling, itching, stiffness or smoothness. It can also be related to its attributes related to physiological comfort, as f…
This paper presents a new process for synthesizing a kind of nitrogen- doped carbon nanotubes (N-CNTs) with primarily a ‘graphite-like’ structure at N substitutions from flames using n-propylamine and n-butylamine as fuels. When the N-CNTs are used as the supercapacitor electrode materials, they exhibit a much larger…
Active, or microporous, carbons are established and effective adsorbents for toxic and other organic vapour-phase compounds. Their porosity results predominantly from slit-shaped pores of molecular dimensions (and hence widths < 2 nm) formed by spaces between graphene layers in a turbostratic structure. They are us…
Oxygen deficient gallium oxide films have been grown by pulsed-laser deposition. Depending on the growth conditions (oxygen pressure and laser power density), amorphous and insulating or partially crystalline and conducting gallium oxide films can be obtained. For very large oxygen deficiencies (Ga2O2.3), the oxide is…
Cryogenic deep rolling of metastable austenites is a new approach to achieve martensitic surface hardening of steel components. By combination of thermal and mechanical loads, more stable microstructures can be applied in the alternative heat-treatment-free production line referred to as cold surface hardening. Subseq…