Materials Literature
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The fluorescing dye Pyronine Y has been incorporated by crystallization inclusion into three different one-dimensional microporous aluminophosphate host materials. A computer-aided rational choice of the framework of the host material made it possible to modulate the aggregation state of the guest dye molecules. Undes…
Abstract The effects of noncircular cross‐section (NCCS) poly ethylene terephthalate (PET) filaments and its shape factor on deep‐black‐coloring of dyed fabrics were investigated by comparing to that of the circular cross‐section PET ones. Indexes such as K/S, L* and Integ values were used for characterizing the deep‐…
In this work, two types of nanocomposites, silica-coated nano-sea-urchins and silica-coated gold nanostars, were fabricated. CTAB-coated nano-sea-urchins with an average size of about 100 nm demonstrate an absorption peak near 600-700 nm and stability in aqueous suspension. CTAB was exchanged with m-PEG-SH by an inter…
This work studied the phases in the Al corner of the Al-Mn-Be phase diagram in the as-cast state and heat-treated conditions. Metallographic investigations, X-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy were used for identifying the phases. The Be contents in the identified phases…
Accumulated evidence indicates that phase separation occurs in potassium intercalated iron selenides, a superconducting phase coexisting with the antiferromagnetic phase K2Fe4Se5, the so-called '245 phase'. Here, we report a comparative study of substitution effects by Co and Mn for Fe sites in K0.8Fe2-ySe2 within the…
Presented are new measurements of the standard Gibbs free energy of formation of rhombohedral LaCrO 3 from component oxides La 2 O 3 and Cr 2 O 3 in the temperature range from 875 to 1175 K, using a bielectrolyte solid‐state cell incorporating single crystal CaF 2 and composition‐graded solid electrolyte ( LaF 3 ) y ·…
Thin film oxide heterostructures with a bound charge at the interface require electrical compensation, which can involve redistribution of mobile charge carriers. We explore a model LaGaO${}_{3}$(001)//MgAl${}_{2}$O${}_{4}$(001) heterostructure with nominally negatively charged interfaces using first-principles method…
Abstract Foam extrusion of polypropylene with a foaming agent, Expancel 950 MB 80 and 950 MB 120, was performed. The process was performed using a co-rotating twin screw extruder, with an 18 mm screw diameter and 24 L/D ratio. Dependences of polymer mass flow rate, extrudate foam rate, and polymer pressure on screw sp…
In this study, the effects of ultrasound on the bioscouring of cotton by alkaline pectinase were examined. Conventional alkaline scouring was considered as the control treatment, and two different sources of ultrasound, an ultrasonic bath and an ultrasonic homogeniser, were tested, along with the enzymatic scouring pr…
Active metamaterials loaded with non-Foster inclusions may exhibit broadband and low-loss material properties, as compared to their passive counterparts. However, the study of their noise performance still remains to be explored. In addition to the Johnson-Nyquist noise from lossy conductors, nonlinear materials used…
The defect structure of ZnO nanoparticles is characterized by means of high-field electron paramagnetic resonance (EPR) spectroscopy. Different point and complex defects could be identified, located at the "bulk" or the surface region of the nanoparticles. In particular, by exploiting the enhanced g-value resolution a…
The tight-binding method is employed to investigate the single-electron electronic structure of triangular graphene quantum dots subject to non-uniform electric fields. The specially designed non-uniform electric fields can provide the equal or opposite electrostatic potentials for all edge carbon atoms. The low-energ…
In 2004, we reported single-pair fluorescence resonance energy transfer (spFRET), based on a perylene diimide (PDI) and terrylene diimide (TDI) dyad (1) that was bridged by a rigid substituted para-terphenyl spacer. Since then, several further single-molecule-level investigations on this specific compound have been pe…
The decoration of nanoparticle surfaces with receptor-specific ligands can improve the delivery of their therapeutic load to cancer cells. Using as the ligand, U11, a peptide specific for the cancer-associated urokinase plasminogen activator receptor, we examined the effect of manipulation of nanoparticle properties o…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTChemorheology of Poly(high internal phase emulsions)Reza Foudazi†, Polina Gokun†, Donald L. Feke‡, Stuart J. Rowan†*, and Ica Manas-Zloczower†*View Author Information† Department of Macromolecular Science & Engineering, Case Western Reserve University, Cleveland, Ohio 44106, Un…
Dye aggregates give energy transfer a boost! Efficient energy transfer between organoboron and Rhodamine dyes are utilized to produce two-photon excitable polylactide nanoparticles, which exhibit high brightness and photostability. These ‘super-bright’ nanoparticles are particularly suited for imaging sensitive specim…
Surface-enhanced Raman scattering (SERS) is quickly growing as an analytical technique, because it offers both molecular specificity and excellent sensitivity. For select substrates, SERS can even be observed from single molecules, which is the ultimate limit of detection. This review describes recent developments in…
A series of new peptide dendrimers with amphiphilic surface, designed around a dendronized ornithine (Orn) core were synthesized and characterized by ESI-MS, ¹H-, ¹³C- NMR, and CD spectrometry. An improved antimicrobial potency against S. aureus and E. coli was detected as a result of an increased charge, higher branc…
Bulk lifetime and doping images on silicon bricks can be obtained by spectral luminescence intensity ratio analysis as established recently. Here, we report on calibrated full spectrum band-to-band luminescence measurements taken on the flat side faces of mono- and multicrystalline silicon bricks at room temperature.…
This paper aims to present a thorough investigation into the mechanics of a C60 fullerene oscillating within the center of a carbon nanotube bundle. To model this nanoscale oscillator, a continuum approximation is used along with a classical Lennard–Jones potential function. Accordingly, new semianalytical expressions…