Materials Literature
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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…
The objective of the study was to investigate the effectiveness and efficacy of the randomized, parallel, and controlled trial of Traditional Chinese Medicine, general acteoside of Rehmanniae leaves, compared with piperazine ferulate in the treatment of primary chronic glomerulonephritis. Rehmanniae leaves and piperaz…
This research introduces a new, numerical and experimental approach to the analysis of the vibration of laminated structures resulting from magnetostriction. The focus is on the in-plane magnetostriction of electrical steel and its transmission into the out-of-plane direction, in which laminated structures (e.g., tran…
Two novel double-stranded dicopper(II) metallacyclophanes of formula (nBu4N)4[Cu2(dpeba)2]·4MeOH·2Et2O (1) and (nBu4N)4[Cu2(tpeba)2]·12H2O (2) have been prepared by the Cu(II)-mediated self-assembly of the rigid ('rod-like') bridging ligands N,N'-4,4'-diphenylethynebis(oxamate) (dpeba) and N,N'-1,4-di(4-phenylethynyl)…
In this report, a technique for rapid synthesis of ZnO microstructures by microwave-assisted heating of precursors at hydrothermal conditions is demonstrated. Further, the reaction mechanism for the growth of ZnO microstructures is analyzed. An accelerated rate of reaction obtained using microwaves enables a dissoluti…
In this work, the effect of film thickness on the photoluminescence (PL) spectra of Si quantum dots embedded in silicon nitride films is investigated experimentally and theoretically. The films were deposited by remote plasma enhanced chemical vapor deposition using the same SiH2Cl2/H2/Ar/NH3 mixture and deposition co…
BACKGROUND: A promising way in diagnostic and therapeutic applications is the development of peptide amphiphiles (PAs). Peptides with a palmitic acid alkylchain were designed and characterized to study the effect of the structure modifications on self-assembling capabilities and the multiple binding capacity to hemagg…
TiCl4 grafted to dehydrated silica is an industrially applied catalyst for the epoxidation of propylene. As with many heterogeneous catalysts, the precise nature of the surface species is not yet fully known, prohibiting reliable structure-activity correlations. In this study, the speciation and restructuring of site-…
1-(Triisopropylsilyl)-3,4-dichloropyrrole and 1-(triisopropylsilyl)-3,4-difluoropyrrole were conveniently prepared from the corresponding 3,4-dibromopyrrole by lithiation followed by halogenation. 2,3,17,18-Tetrahalogeno [26]- and [28]hexaphyrins have been prepared by condensation of 3,4-dihalopyrroles and a dipyrrome…
A local glass transition temperature, T g, around ionic aggregates in poly(ethylene- random -methacrylic acid) (E-MAA) ionomers neutralized with sodium has been studied by the combination of the position-selective spin probing and microwave power saturation method of electron spin resonance (ESR). 5DSA, 7DSA, 10DSA, a…