Materials Literature
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We investigate the wave propagation properties in lossy structures with graded permittivity and permeability involving lefthanded metamaterials.An exact analytic solution to Helmholtz' equation for a lossy case with both real and imaginary parts of permittivity and permeability profile, changing according to a hyperbo…
Self-Assembled Nano-Stuffing Structure in CVD and ALD Co(W) Films as a Single-Layered Barrier/Liner for Future Cu-Interconnects, Shimizu, Hideharu, Kumamoto, Akihito, Shima, Kohei, Kobayashi, Yoshihiko, Momose, Takeshi, Nogami, Takeshi, Shimogaki, Yukihiro
Cobalt xanthate thin films (CXTFs) were successfully deposited by chemical bath deposition, onto amorphous glass substrates, as well as on p‐ and n‐silicon, indium tin oxide, and poly(methyl methacrylate). The structure of the films was analyzed by far‐infrared spectrum (FIR), mid‐infrared (MIR) spectrum, nuclear magn…
In this work we report on the ultrafast photodynamics of the photosensitizer zinc phthalocyanine (ZnPc) and manipulation thereof. Two approaches are followed: active control via pulse shaping and passive control via strategic manipulation in the periphery of the molecular structure. The objective of both of these cont…
ZnO thin films were deposited on patterned gold electrodes using the sol‐gel spin coating technique. Conventional photolithography process was used to obtain the variable microgaps of 30 and 43 μ m in butterfly topology by using zero‐gap chrome mask. The structural, morphological, and electrical properties of the depo…
Three single-walled carbon nanotubes (SWNTs), (8,4), (7,5) and (7,6), are significantly enriched via selective dispersion of SWNTs using a cationic surfactant, where the electronic donor–acceptor interaction with the nanotube is assumed to play an important role in the observed selectivity.
The development of drug‐eluting coatings based on hyaluronic acid (HA) is especially promising for implant‐associated local drug delivery (LDD) systems, whose implantation provokes high insertion forces, as, for instance, cochlear implants or drug‐coated balloons (DCB). The lubricious character of HA can then reduce t…
A fluorescence resonance energy transfer (FRET) platform for the detection of ozone was developed by combining the overlap of the fluorescence spectrum of Ru(bpy)3(2+)-doped silica nanoparticles with the absorption spectrum of indigo carmine at around 600 nm. This FRET system can be used to detect ozone simply within…
A newly-designed drug carrier with enzyme-triggered release behavior and the ability to circumvent multidrug resistance was successfully developed. By optimizing the ratio of lecithin and polysaccharide in reverse micelles, encapsulation efficiency and encapsulation stability can be significantly improved.
The structure of hydrated Co ions confined in the nanospace of single-walled carbon nanotubes (SWNTs) has been studied using the X-ray absorption fine structure (XAFS) technique. Water adsorption isotherms on Co-impregnated SWNTs indicate a high affinity of Co ions to water molecules. The results of XAFS analysis prov…
Cat's claw oxindole alkaloids are prone to isomerization in aqueous solution. However, studies on their behavior in extraction processes are scarce. This paper addressed the issue by considering five commonly used extraction processes. Unlike dynamic maceration (DM) and ultrasound-assisted extraction, substantial isom…
Using a facile method, Fe/Mo anti-site defect (ASD) concentration in double perovskite Sr2FeMoO6 is quantitatively controlled within a wide range of 2%–21%. Our systematic investigation demonstrates the significant effects of ASD on the physical properties, such as magnetization, magnetoresistance and the Curie temper…
An all-dielectric carpet cloak, formulated using the optical transformation technique, is presented here. The carpet cloak was fabricated by implementing a dielectric disk matrix (DDM) with varying periods. To demonstrate that it is functional for multiple angles of incidence, the cloak is measured in a near-field sca…
This mini-review highlights the recent advances in the photosensitized electron-transfer processes of nanocarbons decorated with electron-donating or electron-accepting photosensitizer molecules. As nanocarbons, well-characterized fullerenes, size (diameter)-sorted single wall carbon nanotubes (SWCNTs), few-layer grap…
In this paper, a simple and stable composite electrode based on intrinsically conducting polymer poly(3,4-ethylenedioxythiophene):poly(sty-renesulfonate) (PEDOT:PSS) and ion-exchange polymer Nafion, was successfully fabricated by drop-coating the blended commercially available PEDOT:PSS aqueous dispersion and Nafion s…
This study aims to use sweet sorghum juice (SSJ) to produce an environmentally friendly biopolymer of polyhydroxyalkanoates (PHAs) by bacteria isolated from soil. Among 18 isolates, only 3 isolates, coded as S4, S6, and S11, were chosen to produce PHA via batch fermentation compared to 3 strains of Alcaligenes eutroph…
To promote possible applications of graphene in molecular identification based on stacking effects, in particular in recognizing aromatic amino acids and even sequencing nucleobases in life sciences, we comprehensively study the interaction between graphene segments and different cyclic organic hydrocarbons including…
The traditional concept of the synthesis of semiconductor nanocrystals (NCs) by solvent routes usually performed under high temperatures, causes the semiconductor materials to nucleate and grow into various shaped NCs in solution. Therefore, these methods are named as “solvent-thermal approachs”. In this work, we desc…
porphyrin were synthesized in the 3 solvents mixture by Adler-Longo method. The porphyrin purification was carried out by ethyl acetate extraction.
Two 2D silver lamella frameworks, [Ag4(C5H4NS)2(NO3)2]n (1) and [Ag3(C5H4NS)2]n·nClO4 (2) based on binuclear units have been solvothermally synthesized. The C5H4NS ligand was in situ generated from the cleavage of bis(2,4,6-trimethyl-3,5-bis((pyridin-2-ylthio)methyl)phenyl)methane (bmpm). Furthermore, the formation of…