Materials Literature
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We show that electronic coupling in quantum dot solids can be controlled thermomechanically. The amount and nature of interstitial material controls the shrinkage of the solids upon cooling and thereby the distances as well as electronic coupling between the constituting semiconductor nanocrystals. Using photoluminesc…
Bioresorbable materials are extensively used for a wide range of biomedical applications. In this study, the common industrial processes of compression moulding and solvent casting were utilised for initial preparation of thin film blends based on Poly (dl-lactide), Poly (l-lactide-glycolide) and Poly (ϵ-caprolactone)…
Abstract scCO 2 was used to assist in the preparation of PP/CNT composites. Two types of CNTs were used: MWNTs with and without HDPE coating (cMWNTs). The morphology of the nanocomposites and their mechanical and thermal properties were investigated and compared with samples made by traditional melt compounding. The u…
Barium zirconate titanate (short for BZT) ceramics were prepared by sol-gel method and solid state reaction method, respectively. The BZT ceramics prepared by two methods are both single cubic perovskite phase. The average grain size of the ceramics by sol-gel method is much smaller than that of the ceramics by solid…
The effect of waste office white paper (WOWP) loading and size on mechanical properties, morphology and thermal properties of LDPE/WOWP composites were investigated. The results showed that increasing of WOWP loading has increased tensile strength and Young's modulus but decreased elongation at break of composites. LD…
Photoluminescence (PL) measurements have been carried out on anodic porous silicon (PSi) at temperatures between T=20 and 300 K. He–Ne laser (1.96 eV), green laser diode (2.33 eV), and He–Cd laser (3.81 eV) are used as excitation light sources. Low-temperature (T≤250 K) PL spectra show a multiple-peak structure even w…
Though much research has been conducted for nanoparticles, naturally occurring nanoparticles have not yet been well explored for their diverse properties and potential applications. This paper reports the optical absorption and scattering properties of nanoparticles secreted by English ivy. Both experimental and theor…
Optical manipulation of colloidal particles in nematic liquid crystals is far more complex than manipulation in water-based colloids. Owing to the long-range nature of the orientational ordering, their elasticity and topological conservation laws, almost any kind of object can be trapped and manipulated in liquid crys…
Abstract Blood filtration requires a high removal ratio of leukocytes and with simultaneous high recovery ratio of platelets and other beneficial components. Problems are often encountered with blood filter materials in terms of high platelet loss. Zwitterions such as phosphorylcholine, sulfobetaine and carboxybetaine…
In this paper, the efficient transformation optics method has been utilized to design and analyze two-dimensional (2D) transparent cloaks, structures that can physically protect the devices inside but do not affect their electrical performances at all. The general and explicit expressions for the material parameters o…
Gelatin films were prepared from gelatin granules in aqueous medium by casting. Tensile strength, tensile modulus, elongation at break and the glass point of the gelatin films were found to be 27 MPa, 100 MPa, 4% and 51.7°C, respectively. After irradiated with gamma radiation tensile properties were increased due to d…
The transport properties of a graphene multiquantum well system are investigated numerically using transfer-matrix method. There are transmission gaps for electrons and holes in the transmission spectra at tilted incidence. In the transmission gaps, a few resonant tunneling peaks appear, defined as transmission window…
Strong blue and green visible lights are obtained in Tm3+/Ho3+-codoped LaOF tetragonal nanocrystals (NCs) through down and up fluorescence conversions when the sample is excited selectively with ultraviolet and infrared photons, respectively. The excitation spectrum by detecting at 545 nm (Ho3+:S52→I58) reveals two pe…
Stable tethering of bioactive peptides like RGD to surfaces can be achieved via chemical bonding, biotin streptavidin interaction, or photocross-linking. More challenging is the immobilization of proteins, since methods applied to immobilize peptides are either not specific or versatile enough or might even compromise…
Magnetic properties of multiferroic bi-layer BiFeO3 (BFO)/BaTiO3 (BTO) thin films were studied. It was found that the magnetization increased by the insertion of BTO buffer layer even though the interfacial stress was slightly relaxed, which indicated a coupling between the ferroelectric and ferromagnetic orders. Furt…
Jute fabrics-reinforced linear low density polyethylene (LLDPE) matrix composites (50 wt% fiber) were prepared by compression molding and mechanical properties were studied. Polyvinyl chloride (PVC) matrix was incorporated instead of LLDPE in the jute based composites and their mechanical properties were investigated…
We have developed a caged IP(3) analogue for two-photon photolysis in living animals. This probe is a cell permeable version and was coloaded with a fluorescent Ca(2+) dye into astrocytes in layer 1 of the somatosensory cortex of anesthetized mice. Two-photon irradiation of single cells at 720 nm produced rapid and ro…
The aluminum alloy 5083 in tempers such as H32 and H131 is an established light-weight armour material. While its dynamic response under high strain-rates has been investigated elsewhere, little account of the effect of material orientation has been made. In addition, little information on its strength under such load…
Protein stability and ligand-binding affinity measurements are widely required for the formulation of biopharmaceutical proteins, protein engineering and drug screening within life science research. Current techniques either consume too much of often precious biological or compound materials, in large sample volumes,…
Conventional visible and novel infrared (IR) emissions of Sm3+ in heavy-metal-gallate glasses (Li2O–K2O–BaO–PbO–Bi2O3–Ga2O3, LKBPBG for short) with low phonon energy have been observed. Judd–Ofelt parameters Ω2 (3.00×10−20 cm2), Ω4 (5.19×10−20 cm2), and Ω6 (1.69×10−20 cm2) indicate a higher asymmetry and stronger cova…