ChemInform Abstract: Synthesis, Crystal Structure and Nonlinear Optical Property of CsV2O5.
Abstract Single crystals of CsV2O5 are prepared by solid state reaction of stoichiometric amounts of Cs2CO3 and V2O5 (Pt crucible, 500 °C, 120 h).
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Waveguide integrated silicon avalanche photodetectors
We have fabricated silicon avalanche photodetectors integrated with silicon-on-insulator straight waveguides as well as ring resonator structures. The photodetectors comprise a p-i-n junction, with photogeneration mediated by the presence of deep-levels. For a 400 μm straight waveguide detector we measure a responsivi…
Light extraction by Lambertian sources from light emitting diodes
Internal back-and-forth propagation of photons within a light emitting diode (LED) will naturally tend towards a Lambertian intensity profile when surface texturing is sufficiently rough. Novel designs in light extraction efficiency (LEE) can therefore benefit by optimizing under this expectation. This paper develops…
ChemInform Abstract: Solvent and Substituent Effects on the Electronic Spectra of 3‐Arylazo‐imidazo[1,2‐b]pyrazolo[4,3‐d]pyridazines.
Abstract The solvatochromic and substituent effects on the absorption spectra of azo dyes (III) are interpreted by correlation of absorption frequencies with Kamlet—Taft and Hammet equations, respectively.
Gold nanoparticle absorption under a nanoscale tip illuminated by surface-plasmon polaritons
This research numerically calculated the optical absorption of gold nanoparticles (AuNP) in the presence of metallic (Au) and dielectric (Si) AFM probes, illuminated by a surface plasmon polaritons on an infinite gold substrate. Nanoscale probes localize and enhance the field between the apex of the tip and the partic…
The finite generalized Hankel–Clifford transformation of third kind
In this paper, a variant of the finite generalized Hankel–Clifford transformation of third kind is introduced and its inversion formula established. In order to illustrate the advantageous use of this transformation respecting the finite Hankel–Clifford transformation, at the end some important partial differential eq…
Study of silicon solar cell top and bottom grating location
The paper presents the optical power absorption simulation in a silicon solar cell utilizing single and double diffraction gratings at varying locations (depths) within the device. The solar cell under discussion consists of a rectangular top grating, P-type Si, N-type Si, a rectangular bottom grating, and a reflectiv…
The design and fabrication of the metallic nano-annular aperture structure on the glass and the study of its optical property
The concentrated local electric field on a substrate surface is very helpful to enhance the signal for surface-enhanced Raman scattering (SERS) and surface plasmon resonance (SPR) techniques. In this research, the metallic nano-cylinder, the nano-hole, and nano-annular aperture structures on the glass have been simula…
ChemInform Abstract: [Ni(dien)2]3 [Ge3Sb8S21]·0.5H2O: A New 2‐D Layered Thiogermanate—Thioantimonate with Metal Complexes as Template Ions.
Abstract The title compound (dien: diethylenetriamine) is solvothermally synthesized from a mixture of GeO2, Sb, S, Ni, and dien (sealed Pyrex tube, 170 °C, 10 d, 25% yield).
Oxygen vacancies in oxides: nature, properties and challenges for DFT-based calculations
Point defects play a crucial role in determining the properties of oxide materials. Hence, the study of point defects is of fundamental importance in the design of microelectronic devices, optical fibers, sensors, transparent conductors, ferroelectrics, catalysts, etc. In particular, oxygen vacancies come into play in…
A thermodynamic consistent multi-phase-field model base onthe maximal entropy production princip
The maximal entropy production principle (MEPP) based on which the additional constrains can be incorporated conveniently by the Lagrange method is applied to propose a new multi-phase-field model. The phase-field and diffusion equations follow the classical Onsanger reciprocal law which means that the present work is…
ChemInform Abstract: Ba1.01Sr0.99P2O7: A Novel Ba2+ Site Revealed by X‐Ray Diffraction.
Abstract Single crystals of the title compound are prepared by solid state reaction of Ba(NO3)2, SrCO3, and P2O5 in a molar ratio of 3:4:12 (723 and 1323 k for 24 h each).
Ultra-Low Damage High-Throughput Sputter Deposition on Graphene
This study systematically investigated the sputtering induced graphene disorder. We identified the energetic sputtering gas neutrals as the primary cause of defects, and we introduced the grazing-angle sputtering that strongly suppressed fast neutral bombardment to retain the structural integrity of the underlying gra…
Electrodynamic properties of graphene and their technological applications
Graphene is a novel two-dimensional material with fascinating electrodynamic properties like the ability to support collective electron oscillations (plasmons) accompanied by tight confinement of electromagnetic fields. Our goal is to explore light-matter interaction in graphene in the context of plasmonics and other…
微細藻類「バイノス」による放射性物質の除去
福島第一原子力発電所事故により大量の放射性物質が環境中に放出され,外部被曝および内部被曝による健康被害が危惧されている。これを防止するためにも,環境中や原子力発電所の放射能汚染水の低コストかつ効果的な処理方法の開発が求められている。我々は,微細緑藻類の新種を発見し,それが原子力発電所事故で放出された放射性物質を取り込む事を発見した。この新種微細緑藻類Parachlorella sp. binos(バイノス)は,アルギン酸に富む細胞外マトリックスと葉緑体を豊富に持つ性質がある。放射性セシウムと放射性ストロンチウムの速やかな取り込みが認められ,二次元質量分析法(SIMS)により,ストロンチウムはバイノスの細胞外マトリックスに結合するこ…
Engineering of gold and aluminum plasmonic structures:Fabrication and fluorescence enhancement
In this thesis the optical properties of short range ordered plasmonic nanostructures in gold and aluminum fabricated using colloidal lithography is investigated and explored for use in plasmon enhanced fluorescence from monomers, exciplexes and excimers.Nanostructures investigated include nanohole arrays, nanocaps, n…
The study of the growth mechanism of TiO2 nanotubes and their applications
This research project focused on the creation of nanomaterials and their applications. The main aim was to control the growth of TiO2 nanotubes with various morphologies and to investigate potential applications for controlled drug release and for photocatalytic water splitting. The electrochemical anodisation process…
Nuclear Power: The Last Best Option
ADVERTISEMENT RETURN TO ISSUECommentNEXTNuclear Power: The Last Best OptionJerald L. SchnoorCite this: Environ. Sci. Technol. 2013, 47, 7, 3019Publication Date (Web):March 14, 2013Publication History Published online14 March 2013Published inissue 2 April 2013https://pubs.acs.org/doi/10.1021/es400852nhttps://doi.org/10…
Deformation Micromechanics of Graphene Nanocomposites
Graphene nanocomposites have been successfully prepared in this study in the form of a sandwich structure of PMMA/graphene/SU-8. It has been proved that Raman spectroscopy is a powerful technique in the characterisation of the structure and deformation of graphene. The 2D band of the monolayer graphene has been used i…
Caracterización de la Pasividad del Acero Inoxidable uns N08031 en Ácido Fosfórico Contaminado mediante Técnicas Electroquímicas.
La obtencion de acido fosforico a partir del proceso humedo constituye aproximadamente un 95% de su produccion. Entre las etapas principales de este proceso productivo, hay que mencionar el ataque de la roca fosforica con acido sulfurico concentrado, la filtracion y posterior concentracion del acido producido. Esta te…