The New Diamond Age?
After the hype, what realistic applications might synthetic diamond films have in the near future?
Materials Literature
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pH-Responsive Poly(acrylic acid) Core Cross-Linked Star Polymers: Morphology Transitions in Solution and Multilayer Thin Films
Star polymers show great promise for a range of applications, including drug delivery and advanced coatings. Their unique solution properties and high functionality also make them attractive building blocks for the preparation of nanostructured thin films. This article describes the preparation of a poly(acrylic acid)…
Influence of Water on High-Temperature CO2 Capture Using Layered Double Hydroxide Derivatives
Mg−Al−CO 3 layered double hydroxide (LDH) was synthesized, and its thermal evolution was investigated using X-ray diffraction FTIR techniques. These patterns revealed the phase transformation of crystalline LDH to a nearly amorphous layered double oxide (LDO). LDOs derived after calcination at 400 °C showed good sorpt…
Nonadiabatic effects in the dissociation of oxygen molecules at the Al(111) surface
The measured low initial sticking probability of oxygen molecules at the Al(111) surface that had puzzled the field for many years was recently explained in a nonadiabatic picture invoking spin-selection rules [J. Behler et al., Phys. Rev. Lett. 94, 036104 (2005)]. These selection rules tend to conserve the initial sp…
Shape Memory Polymers and Their Nanocomposites: A Review of Science and Technology of New Multifunctional Materials
In this study Co(Ni)/MoS2 unsupported nanocatalysts (nanorods and nanoribbons) were synthesized with Co(Ni)/(Co(Ni) + Mo) = 0.3, 0.5 molar ratios for Co and Ni respectively. First the alpha-MoO3 nanostructures were impregnated with an aqueous solution of Co(Ni)Cl2 x 6H2O or Co(Ni)(NO3)2 x 6H2O, then were treated for 2…
Pd(II) Phthalocyanine-Sensitized Triplet−Triplet Annihilation from Rubrene
Upconverted yellow singlet fluorescence from rubrene (5,6,11,12-tetraphenylnapthacene) was generated from selective excitation (lambdaex = 725 nm) of the red light absorbing triplet sensitizer palladium(II) octabutoxyphthalocyanine, PdPc(OBu)8, in vacuum degassed toluene solutions using a Nd:YAG/OPO laser system in co…
High-field and low-field magnetoresistances of CoFe nanoparticles elaborated by organometallic chemistry
We report on magnetotransport measurements on CoFe nanoparticles surrounded by an insulating organic layer. Samples were obtained by evaporating a solution of nanoparticles on a patterned substrate. Typical behavior of Coulomb blockade in array of nanoparticles is observed. High- and low-field magnetoresistances have…
XANES analysis of structural changes in a transient photoexcited state of metalloporphyrin
We have performed a structural analysis of the Ni K-edge XANES spectrum of a square planar coordination complex, Ni-tetramesitylporphyrin, Ni(II)TMP, in dilute toluene solution. The fit of the spectrum was carried out in the frame of the full multiple scattering (FMS) approach, via the MXAN program, starting from a mu…
The Different Photoisomerization Efficiency of Azobenzene in the Lowest nπ* and ππ* Singlets: The Role of a Phantom State
Azobenzene E<==>Z photoisomerization, following excitation to the bright S(pi pi*) state, is investigated by means of ab initio CASSCF optimizations and perturbative CASPT2 corrections. Specifically, by elucidating the S(pi pi*) deactivation paths, we explain the mechanism responsible for azobenzene photoisomerization…
Synthesis of Macrocyclic Copolymer Brushes and Their Self-Assembly into Supramolecular Tubes
We report on an efficient route to design large macrocyclic polymers of controlled molar mass and narrow dispersity. The strategy is based on the synthesis of a triblock copolymer ABC, in which the long central block B is extended by two short A and C sequences bearing reactive antagonist functions. When reacted under…
Amine-Capped ZnS−Mn2+ Nanocrystals for Fluorescence Detection of Trace TNT Explosive
Mn2+-doped ZnS nanocrystals with an amine-capping layer have been synthesized and used for the fluorescence detection of ultratrace 2,4,6-trinitrotoluene (TNT) by quenching the strong orange Mn2+ photoluminescence. The organic amine-capped nanocrystals can bind TNT species from solution and atmosphere by the acid-base…
Targeted Delivery of Gemcitabine to Pancreatic Adenocarcinoma Using Cetuximab as a Targeting Agent
One of the key challenges in anticancer therapy is the toxicity and poor bioavailability of the anticancer drugs. Nanotechnology can play a pivotal role by delivering drugs in a targeted fashion to the malignant cells that will reduce the systemic toxicity of the anticancer drug. In this report, we show a stepwise dev…
Coherent Dynamics of a Single Spin Interacting with an Adjustable Spin Bath
Phase coherence is a fundamental concept in quantum mechanics. Understanding the loss of coherence is paramount for future quantum information processing. We studied the coherent dynamics of a single central spin (a nitrogen-vacancy center) coupled to a bath of spins (nitrogen impurities) in diamond. Our experiments s…
Gate-Variable Optical Transitions in Graphene
Two-dimensional graphene monolayers and bilayers exhibit fascinating electrical transport behaviors. Using infrared spectroscopy, we find that they also have strong interband transitions and that their optical transitions can be substantially modified through electrical gating, much like electrical transport in field-…
Canon's development status of EUVL technologies
We developed a small field exposure tool (SFET) in collaboration with EUVA (Extreme Ultraviolet Lithography System Development Association). SFET was installed at SELETE (Semiconductor Leading Edge Technologies; Japanese Consortium) in 2006. SFET is positioned as a cornerstone of the manufacturing technologies for EUV…
Changes in dielectric properties of Pb(In 1/2 Nb 1/2 )O 3 -PbTiO 3 ceramics under compressive stress applied parallel and perpendicular to an electric field
Changes in dielectric properties of Pb(In1/2Nb1/2)O3-PbTiO3 ceramics under compressive stress applied parallel and perpendicular to an electric field, Unruan, M, Wongsaenmai, S, Laosiritaworn, Y, Ananta, S, Yimnirun, R
Solid state structure and mechanical properties of melt mixed poly(trimethylene terephthalate)/polycarbonate blends
Abstract Poly(trimethylene terephthalate) (PTT)/poly (carbonate of bisphenol A) (PC) blends were obtained in the melt state by direct injection molding and also by extrusion followed by injection molding. The blends rich in PTT were monophasic, while the blends rich in PC were biphasic with the two components of the b…
Emulsion‐induced ordered microporous films using amphiphilic poly(ethylene oxide)‐block‐poly(n‐butyl isocyanate) block copolymers
Abstract Well‐defined poly(ethylene oxide)‐block‐poly(n‐butyl isocyanate) (PEO‐block‐PBIC; AB) diblock copolymers were prepared with trichloropentadienyl titanium (IV) (CpTiCl3) catalyst. Ordered microporous films (hexagonal pattern) were constructed by emulsion micelles of A110B230 diblock copolymer (the subscript in…
Magnetotransport study on La0.5Sr0.5CoO3−δ∕YBa2Cu3O7−δ∕La0.7Ca0.3MnO3−δ trilayer system
Epitaxial ferromagnetic $({\mathrm{La}}_{0.5}{\mathrm{Sr}}_{0.5}\mathrm{Co}{\mathrm{O}}_{3\ensuremath{-}\ensuremath{\delta}})$/superconducting $(\mathrm{Y}{\mathrm{Ba}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}})$/ferromagnetic $({\mathrm{La}}_{0.7}{\mathrm{Ca}}_{0.3}\mathrm{Mn}{\mathrm{O}}_…
Analytically Evaluating the Properties and Performance of Layered Magnetoelectric Composites
A theoretical model has been developed for predicting the magnetoelectric (M-E) coupling effect of magnetostrictive-piezoelectric layered composites (MPLC). This model determines the individual effects of MPLC configurations and material properties on the homogenized M-E voltage coefficient, α ' , curves. By analyzing…