Materials Literature
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The ligands of platinum anticancer complexes determine a multitude of factors including reactivity, distribution, tumour selectivity and penetration, cellular accumulation, mode of cytotoxicity, type of pharmaceutical formulation required, and route of drug administration. They can be tailored to fine-tune physicochem…
Renewable feedstocks are gaining traction in supplementing and replacing traditional petrochemical products. Seed oils are attractive renewable feedstocks because they are available on a large scale at low prices and contain multiple functional groups for further modifications. To help understand the effect of ethylen…
This chapter contains sections titled: Introduction Types of Hydrogels Properties of Hydrogels Preparation Methods of Hydrogels Characterization of Hydrogels Biomedical Applications of Hydrogels Hydrogels for Wound Management Recent Developments on Hydrogels Conclusions
Mucoadhesion is said to occur when two surfaces, one of which is a mucous membrane, adhere to each other. Mucoadhesive materials are typically hydrophilic macromolecules containing numerous hydrogen bond forming groups, the carbomers, cellulose derivatives and chitosans being well-known examples. Mucoadhesion is said…
Photocatalytically active nanostructures require a large specific surface area with the presence of many catalytically active sites for the oxidation and reduction half reactions, and fast electron (hole) diffusion and charge separation. Nanowires present suitable architectures to meet these requirements. Axially segm…
Little is known of the effects of combined blast and thermal loading on structures within an explosive fireball. This paper documents and discusses the response of 2mm thick steel plate within a fireball of a 41kg TNT equivalent explosive. This continues the study of work investigating the synergistic response of stru…
Spectroscopically resolved emission from single nanocrystals at cryogenic temperatures provides unique insight into photophysical processes that occur within these materials. At low temperatures the emission spectra collapse to narrow lines revealing a rich spectroscopic landscape and unexpected properties, completely…
Field theoretic approaches have been particularly useful in studying colloidal and biological systems, in which long-range electrostatic interactions are important. For weakly coupled systems, the field theoretic methods reduce to the commonly known Poisson- Boltzmann (PB) theory [Chapman (1913); Gouy (1910)], which ha…
We present an iterative design method for the coupling and the mode conversion of arbitrary modes to focused surface plasmons using a large array of aperiodically randomly located slits in a thin metal lm. As the distance between the slits is small and the number of slits is large, significant mutual coupling occurs b…
Abstract Two coordination polymers, namely {[Mn(2,4′‐bpdc)(bimb)(H2O)0.5]·0.5H2O}n (1) and [Mn(4,4′‐bpdc)(bimb)]n·2.5H2O (2) [2,4′‐bpdc = biphenyl‐2,4′‐dicarboxylate, 4,4′‐bpdc = biphenyl‐4,4′‐dicarboxylate, and bimb = 1,4‐bis(1‐imidazol‐yl)‐2,5‐dimethyl benzene], were hydrothermally synthesized by reactions of mangan…
Leakage radiation spectroscopy of organic para-Hexaphenylene (p-6P) molecules has been performed in the spectral range 420-675 nm which overlaps with the p-6P photoluminescence band. The p-6P was deposited on 40 nm silver (Ag) films on BK7 glass, covered with SiO2 layers. The SiO2 layer thickness was varied in the ran…
ABSTRACT In this article, boric acid‐modified poly(aryl ether sulfone) (PES‐B) membranes were prepared by solution blending, solution casting, evaporation, and programmed temperature curing method for the first time. The chemical modification of poly(aryl ether sulfone) was accomplished by the curing of poly(aryl ethe…
More than one pentacene triplet is produced from the absorption of one photon. In their Communication on page 6715 ff., Y. Teki et al. describe how transient absorption measurements performed on pentacene derivatives with stable radical substituents in dilute solution demonstrate that the ultrafast formation of a trip…
Guided mode resonance biosensors are of emerging interest as they allow integration on chip with fabrication on mass scale. The guided mode resonances (GMRs), observed in the transmission or reflection spectrum, are sensitive to refractive index changes in the vicinity of the photonic crystal (PhC) surface. Standard m…
In open nanophotonic structures, the natural modes are so-called quasi-normal modes satisfying an outgoing wave boundary condition. We present a new scheme based on a modal expansion technique, a scattering matrix approach and Bloch modes of periodic structures for determining these quasi-normal modes. As opposed to s…
Plasmonic nanostructures are known to influence the emission of near-by emitters. They can enhance the absorption and modify the external quantum efficiency of the coupled system. To evaluate the possibility of using plasmonics to enhance the light emission of a phosphor-converted LED device and create an efficient di…
We report on measurements of optical, morphological and electrical properties of silver nanolayers. The Ag films of thickness from 10 to 500 nm are deposited in e-beam evaporator. Fused silica and sapphire substrates are used with nominal root-mean-square (RMS) roughness equal 0.3 and 0.2 nm, respectively. Silver is d…
A polarization rotation is realized by subwavelength binary gratings, where the TE and TM round trip phases of the smallest grating modes are fixed to the smallest possible integer numbers of 2π that allow a straight-through phase difference of π. This results in a subwavelength grating allowing to realize a half-wave…
We show that periodic distributions of gain or losses on the wavelength scale allow managing spatial diffraction of light beams, with no index contrast. It has been recently predicted that such artificial periodic structures, analogous to Photonic Crystals (PhCs), would also hold the novel spatial beam propagation eff…
Since the first proposal of the idea of optical cloaking, huge research effort has been spent to implement hiding objects. We propose a broad band all-dielectric partial (unidirectional) cloaking device that hides arbitrary shaped objects. The cloaking structure is designed utilizing graded index (GRIN) photonic cryst…