Materials Literature
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Shape memory alloy (SMA) actuators have recently been developed in the form of torsional tubes that can undergo large twisting deformations. Wing twisting has been investigated as a means to reduce induced drag in cruise conditions in small aircraft, but the actuation hardware required to generate wing twist at larger…
Abstract This paper investigates the microstructure and texture evolution of as-rolled Mg-5Li-3Al-2Zn-1.2Y-0.8Nd. During rolling (both warm rolling and hot rolling), many twins appear in the alloy, some of which are cross-twins. Dynamic recrystallization occurs, resulting in grain refinement. With the increase of roll…
An ionic polymer-metal composite (IPMC) sensor typically consists of a thin ion-exchange membrane with electrodes on both surfaces. Such IPMC sensors respond to deflections in the beam-bending directions only and thus are considered one-dimensional. In this paper, a novel IPMC sensor capable of two-dimensional sensing…
To predict the resin absorbing content of bamboo bundle fiber, a model relating to the soaking time and mass ratio of polyvinyl acetate (PVAC) adhesive to phenol formaldehyde (PF) resin defined on the basis of the Lucas-Washburn equation was proposed. Various dipping times and different PVAC/PF ratios were investigate…
A new hydrazone N′-(3-bromo-2-hydroxybenzylidene)isonicotinohydrazide (H2L) and its oxovanadium(V) complex, [VOLL′]·2H2O (L′ = 2-hydroxybenzohydroxamate), were prepared and structurally characterized by physico-chemical, spectroscopic methods, and single-crystal X-ray determination. The hydrazone coordinates to V thro…
Once considered an inert element, gold has recently gained attention as a catalyst. This book presents a comprehensive review of this rapidly-evolving field. It provides readers with a thorough background to the use of gold in catalysis, as well as the latest methods for the preparation of gold catalysts. Written to b…
In most of the existing SMA constitutive models, it is assumed that transformation starts when a thermodynamic driving force reaches a specified amount regardless of loading history. In this work, a phenomenological approach is used to develop an enhanced one-dimensional constitutive model in which loading history is…
Three imidazolium derivatives 3–5 were designed and synthesized, in which naphthaimidazolium group acted as both fluorophore and anion receptor. Compound 3 exhibited high selectivity for F− in CH3CN solution over all the other anions and acted as a ratiometric fluorescent probe for F− with an enhanced blue-shift in em…
Energy efficient systems and environmentally friendly solutions are the focus of many commercial development projects. Current refrigeration technology carries a significant share of global energy consumption and exploring alternative refrigeration principles has become increasingly important. Shape memory alloys (SMA…
Due to their high actuation energy density and ability to recover large deformation, Shape Memory Alloys (SMAs) have many promising engineering applications. However, applications are sometimes limited to non-structural or non-critical components due to the lack of fatigue characterization standards and general unders…
Large-grain SiGe-crystal-on-insulator is essential for fabrication of devices such as advanced thin film transistors and/or photosensors. For these purposes, rapid-melting growth of amorphous SiGe stripes (7%–20% Si concentration) on insulating substrates is investigated over a wide range of cooling rates (from 2 to 1…
In this research, the enhanced power conversion efficiency of PBnDT-FTAZ:PC70BM bulk-heterojunction (BHJ) solar cells (over 7%), fabricated with a solvent additive (1,8-diiodooctane, 3%), was demonstrated. The appropriate ratio of solvent additive leads to a device with increased JSC, fill factor, and favorably contro…
A novel computational approach is proposed to investigate the shear modulus of graphene nanostructures. In this approach, the factors that affect the shear modulus of graphene structures are analysed using an integrated artificial intelligence (AI) cluster comprising molecular dynamics (MD) and gene expression program…
Caterpillar-like (CL) Au/Ag nanotubes (NTs) with high surface roughness were synthesized by a simple, rapid route using silver nanowires as sacrificial template and 3,4-dihydroxyphenylalanine (DOPA) as reducing and capping agent. Further experiments revealed that, by simply varying the ratios of the chlorauric acid an…
The properties of dialkylcarbonate + n-alkane mixed fluids were studied both from macroscopic and from microscopic viewpoints using thermophysical measurements combined with classic molecular dynamics simulations and DFT quantum chemistry studies. The objective of this study is a whole range characterization of dialky…
A facile method to coat silica surfaces with THPMP is introduced, forming simultaneously a protein resistant and bioconjugable surface. The coating is experimentally identified and its anti-fouling and bioconjugable characteristics are demonstrated.
We present the measurement of the temperature dependence of the energy transfer up-conversion coefficient from the main upper laser level (4F3/2) of 1at.% doped Nd:YAG. This is achieved by a very simple method employing a z-scan technique, monitoring the transmitted power of a probe laser tuned to the main absorption…
The growth behavior of vertically-oriented few-layer graphene (V-FLG), produced by radio-frequency plasma enhanced chemical vapor deposition (PECVD), is studied here as a function of catalyst and catalyst film thickness. The Co catalyst and catalyst film thickness were observed as being crucial for the growth states a…
A novel and versatile fabrication route for titanium-based biocomposites has been realized by mussel adhesion chemistry through layer-by-layer assembly of polydopamine (PDOA) and hydroxyapatite (HA). The assembly process was monitored by XPS analysis and weight shifts. The chemical structure and the surface morphologi…
Self-assembly of the tripyridyl ligand 2,4,6-tris(4-pyridyl)triazine(TPT) and ZnI2via the gas phase produced three kinds of networks: [(ZnI2)(TPT)]n; [(ZnI2)3(TPT)2]n; and [(ZnI2)(μ-I)(ZnI)(TPT)]n. [(ZnI2)3(TPT)2]n is the first example of the single crystal formation of a porous network via the gas phase and showed th…