Materials Literature
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Superconducting metamaterials combine the advantages of low-loss, large inductance (with the addition of kinetic inductance), and extreme tunability compared to their normal metal counterparts. Therefore, they allow realization of compact designs operating at low frequencies. We have recently developed radio frequency…
Abstract A new bis(triphenylamine)‐type dicarboxylic acid monomer, N , N ‐bis(4‐carboxyphenyl)‐ N ′, N ′‐bis(4‐ tert ‐butylphenyl)‐1,4‐phenylenediamine, was prepared by a well‐established procedure and led to a new family of redox‐active aromatic polyamides with di‐ tert ‐butyl‐substituted N , N , N ′, N ′‐tetraphenyl…
Abstract Surface‐initiated reversible addition‐fragmentation chain transfer (SI‐RAFT) polymerization of N ‐[3‐(dimethylamino)propyl]methacrylamide (DMAPMA) on the silicon wafer was conducted in attempt to create controllable cationic polymer films. The RAFT agent‐immobilized substrate was prepared by the silanization…
The density of states (DOS) and the optical conductivity of graphene is calculated in the presence of a perpendicular magnetic field and where scattering on charged and short-range impurities is included. The standard Kubo formula is employed where the self-energy induced by impurity scattering and the Green's functio…
Abstract Phosphido‐diphosphine Group 3 metal complexes 1–4 [( o ‐C 6 H 4 PR 2 ) 2 P‐M(CH 2 SiMe 3 ) 2 ; R = Ph, 1 : M = Y, 2 : M = Sc; R = iPr, 3 : M = Y, 4 : M = Sc] are very efficient catalysts for the ring‐opening polymerization (ROP) of cyclic esters such as ε‐caprolactone (ε‐CL), L ‐lactide, and δ‐valerolactone u…
Abstract Two series of multiblock poly(ether‐ester)s based on poly(trimethylene terephthalate) (PTT) as the rigid segments and poly(tetramethylene oxide) (PTMO) as the flexible/soft segments were synthesized with the aim of developing of the new family polyester thermoplastic elastomers (TPEs) based on PTT as rigid se…
Hybrid materials based heteropolyacids, silicotungstic acid or phosphomolybdic acid , and a room temperature ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM] ) were synthesized. Carbon analysis showed that of reacts with of and of reacts with of . Fourier transform infrared spectra showed the presenc…
New liquid crystals having a non-conventional structure have been synthesised from a six-armed cyclotriphosphazene core, [N(3) P(3) (OC(6) H(4) OH-4)(6) ], which was condensed with polycatenar acids. Reactions were monitored by (31) P{(1) H} and (1) H NMR spectroscopy and the chemical structure of the resulting materi…
A mechanically based structural optimization method is utilized to explore the phenomena of jamming for assemblies of frictionless Platonic solids. Systems of these regular convex polyhedra exhibit mechanically stable phases with density substantially less than optimal for a given shape, revealing that thermal motion…
In this paper, the dehydrogenation properties of ammonia-borane (AB, NH 3 BH 3 ) modified with platinum nanoparticle functionalized carbon nanotubes (CNTs) (Pt@CNTs) that were prepared through a new “ammonia-deliquescence” method are reported. It has been demonstrated that the synergetic catalysis of CNTs and platinum…
Polarization gratings (PGs) have been recently been developed for ultraefficient liquid crystal displays, nonmechanical optical beam steering, and telecommunication devices at optical and near-infrared wavelengths (0.4–2.0 µm). A PG simultaneously acts as both a spectroscopic and polarimetric disperser for circularly…
The critical role of charged nanoclusters and nanoparticles in the growth of thin films and nanostructures by chemical vapour deposition (CVD) is reviewed. Advanced nanoparticle detection techniques have shown that charged gas-phase nuclei tend to be formed under conventional processing conditions of thin films and na…
We have investigated structure, electronic, and magnetic properties of metal-terminated zigzag graphene nanoribbons (M-ZGNRs) by first-principles calculations. Two families of metal terminations are studied: (1) $3d$-transition metals (TMs) Fe, Co, and Ni and (2) noble metals (NMs) Cu, Ag, and Au. All systems have spi…
Fish out of water: Amphiphilic tetrakis(2,6-xylylisocyanide)rhodium(I) complexes can self-assemble in water, through RhI⋅⋅⋅RhI and hydrophobic interactions, into ultralong crystalline nanowires and in turn hierarchically organize into a variety of ordered micro- and macrostructures. These solution-processable organome…
We report the formation of hierarchically ordered polymer nanofiber structures, named as nanofiber shish kebabs (NFSKs), by combining electrospinning and controlled polymer crystallization. Nanofibers were produced by electrospinning polycaprolactone (PCL), which was used as the shish, and a secondary polymer [either…
The aim of the present study was to investigate the potential of hydrogel-electrospun mesh hybrid scaffolds as coronary artery bypass grafts. The circumferential mechanical properties of blood vessels modulate a broad range of phenomena, including vessel stress and mass transport, which, in turn, have a critical impac…
Abstract Well‐defined amphiphilic graft copolymer with hydrophobic polysulfone (PSU) backbone and hydrophilic poly(acrylic acid) (PAA) side chains were synthesized and characterized. For this purpose, commercially available PSU was converted to azido‐functionalized polymer (PSU‐N 3 ) by successive chloromethylation an…
Fe K-edge and Se K-edge x-ray absorption near edge structure (XANES) measurements are used to study the FeSe(1 - x)Te(x) electronic structure of chalcogenides. An intense Fe K-edge pre-edge peak due to Fe 1s --> 3d (and admixed Se/Te p states) is observed, showing substantial change with Te substitution and x-ray pola…
Single-crystalline mixed metal oxide nanoparticles and 3D hierarchical mesocrystal microspheres of MnWO4 have been synthesized on a large scale by a facile single-step hydrothermal method using Mn(NO3)2 and Na2WO4 precursors, and capping bifunctional amino acid biomolecules with different alkyl chain lengths, and wate…
To enhance site-specific intracellular delivery against folate receptor, heparin-PEG-folate (H-PEG-F) containing succinylated-heparin conjugated with folate via PEG 1000/3000 spacers has been prepared. Due to covalent strategy, H-PEG-F displays amphiphilic property, which is capable of entrapping a hydrophobic agent,…