Ion binding often mediates electron transfer in biological systems as a cofactor strategy, either promoter or an inhibitor. However, it has rarely, if ever, been exploited for that purpose synthetic host-guest assemblies. We report here strong of specific anions (chloride, bromide, and methylsulfate but not tetrafluoroborate hexafluorophosphate) to tetrathiafulvalene calix[4]pyrrole (TTF-C4P) donor enforces host conformation favors bisimidazolium quinone (BIQ2+) guest acceptor. In contrast,...

Polymer residue-free graphene nanoribbons (GNRs) of 200 nm width at 1 μm pitch were periodically generated in an area cm2 via laser interference lithography using a chromium interlayer prior to photoresist coating. High-quality GNRs evidenced by atomic force microscopy, micro-Raman spectroscopy, and X-ray photoelectron spectroscopy measurements. Palladium nanoparticles then deposited on the as catalysts for sensing hydrogen gases, GNR array was utilized electrically conductive path with less...

In this study, blue-emitting CH3NH3PbBr3 NCs were achieved by changing the precipitation solvent used in LARP from a non-polar to polar solvent. As dipole moment of (Sol. B) with oxygen functional groups increased, PL spectrum was blue-shifted and crystal size decreased. The high Sol. B increased interaction between ligands B, promoting growth bulk particles rather than NCs. This decreased monomer concentration reaction vessel, thereby limiting study demonstrates that can be controlling...

An accurate and reliable prediction of reactive flow is a challenging task when characterizing an energetic material subjected to external shock impact as the detonation transition time on order micro second. The present study aims at investigating size effect behavior heavily aluminized cyclotrimethylene-trinitramine (RDX) which contains 35% aluminum by using rate model that includes ignition growth mechanisms for initiation subsequent detonation. A series unconfined stick tests...

Substantial effort has been devoted to the synthesis of molecular receptors that can function as chemosensors for nitroaromatic explosives. In spite several advantages, these suffer from low sensitivity and difficulties translating response into gas phase. We have combined tetrathiafulvalene-functionalized calix[4]pyrrole, a colorimetric receptor, with polyimide microcantilever, includes mechanical stress sensing element. The resulting system is capable detecting 10 ppb trinitrobenzene...

Bioinspired hierarchical structures on the surface of vertical light-emitting diodes (VLEDs) are demonstrated by combining a self-assembled dip-coating process and nanopatterning transfer method using thermal release tape. This versatile structure can efficiently reduce total internal reflection add functions, such as superhydrophobicity high oleophobicity, to achieve an antifouling effect for VLEDs. As service our authors readers, this journal provides supporting information supplied...

A periodically aligned array of graphene nanorings (GRNRs) with a sub-15 nm linewidth at pitch 450 is fabricated large area, 9 cm(2) , through conventional nanoimprint lithography coupled sophisticated metal deposition and plasma-etching processes. The existence the single-layer GRNRs verified by various techniques.

This article is concerned with the effect of strain rate on hardening behavior polymer-bonded explosives at a wide range rates ranging from 0.0001 s –1 to 3870 −1 . Inert explosive simulants are prepared as specialized particulate composites acquire analogous mechanical characteristics for safety reasons. Uniaxial compressive tests were conducted quasi-static states intermediate 100 cylindrical specimens using dynamic material testing machine (INSTRON 8801) and high-speed machine. An...

We report spectroscopic characterization of Fe:ZnSe quantum dots (for 2% Zn/Fe molar ratio) fabricated by microemulsion hydrothermal synthesis. Mid-IR photoluminescence the 5E↔5T2 transition Fe2+ ions over 3.5-4.5 μm spectral range was observed in dot samples and kinetics luminescence have been characterized at temperatures 30-300 K under direct (2.788 μm) mid-IR excitation indirect (0.355 photoionization excitation. The radiative lifetime (τrad) estimated from these measurements to be 48 µs...

Hollow nanoporous gold nanoshells are fabricated by the size reduction of colloid templates and sintering AuNPs induced plasma etching.

A pyrotechnic system consisting of donor/acceptor pair separated by a gap relies on shock attenuation characteristics the material and sensitivity donor acceptor charges. Despite its common use, numerical study such train configuration is seldom reported because proper modeling full process requires precise capturing wave in prior to triggering detonation high explosive accurate description strain rate dynamics explosively loaded inert confinements. We apply hybrid particle level-set based...

We have constructed an ultraviolet (UV)‐apertureless near‐field scanning optical microscope‐Raman spectroscopy system by using aluminum tip for the simultaneous measurement of topography and Raman scattering nanomaterials with high spatial resolution. The topography, Rayleigh image, tip‐enhanced image carbon nanotube film showed that a resolution around 19 nm was achieved. This UV‐Raman mapping exceeds previous approaches, which several hundred nanometers Copyright © 2012 John Wiley & Sons, Ltd.

Localized self-assembly of conjugated polyelectrolytes (CPEs) in a film is realized by simply contacting the to appropriate surfactant solutions. This situ allows simultaneous optical and structural reforming on selected areas highly resolved patterning CPE film. As service our authors readers, this journal provides supporting information supplied authors. Such materials are peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues...

Secretory leukocyte protease inhibitor (SLPI) plays an important role in promoting the invasion and metastasis of a range cancer cells. However, there are no reports expression function SLPI oral carcinoma In this study, cell line KB was used to determine whether affects proliferation, migration RT-PCR Western blotting revealed high levels endogenous cells as well strong increase secretion after wounding compared immortalized normal keratinocytes (INOK). The wound healing assay more than...

The kinetic analysis of a heavily aluminized cyclotrimethylene-trinitramine (RDX) using differential scanning calorimetry (DSC) is conducted. Friedman isoconversional method applied to DSC experimental data and AKTS software used for the analysis. preexponential factor activation energy are extracted as function product mass fraction. scheme does not assume multiple chemical steps describe complex response energetic materials; instead, set Arrhenius factors constructed based on local...

Abstract A lateral dislocation in a double-layer microsphere film is very difficult to identify because the constituent domains have same two-dimensional crystalline orientation. Orientation-sensitive optical techniques cannot resolve this issue. Here, we demonstrate that partial dark-field (pDF) microscopy can be effective identifying type of domain boundary and close-packed double-layer. Using hexagonal symmetry light-focusing property microspheres, partially blocked condenser provide much...

Controlling the assembly of nanoparticles is important because optical properties noble metal nanoparticles, such as surface plasmon resonance (SPR) and surface-enhanced Raman scattering (SERS), are critically dependent on interparticle distances. Among many approaches available, light-induced disassembly particularly attractive it enables spatial modification nanoparticle assemblies. In this study, we prepare gold (AuNP) aggregates in a gel matrix. Irradiation gelated AuNP at 532 nm leads...

A nanoporous silver film (npAgF), a promising structure for surface-enhanced Raman spectroscopy (SERS), can be fabricated by using successive O2 and Ar plasma treatments on planar film. The common dealloying method producing an npAgF involves annealing at high temperatures to produce alloy film, as well harsh etching corrosive chemicals. By contrast, the plasma-based applied directly various functional substrates more sophisticated structures. Herein, we report facile fabrication wrinkled...