Materials Literature
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Crucial for the development of enhanced electrooptic materials is the construction of highly anisotropic materials. Nematic liquid crystals are able to control the chain conformation and alignment of poly(phenylene ethynylene)s (PPEs), producing electronic polymers with chain-extended planar conformations for improved…
The relationships between 49 naviculoid diatoms, currently arranged in 14 families and four orders were investigated using cladistic analysis in order to test the types of characters used in diatom systematics and to assess how well the current classification reflects possible phylogenetic relationships in this group.…
Hollow polyelectrolyte multilayer capsules made of ionizable segments (e.g., carboxylic acid, amine, pyridine) have an equilibrium size that is independent of salt concentration and pH in a wide pH range but swell to a larger size at lower and higher pH. Besides, at the edges of the stability plateau their equilibrium…
Phosphohedyphane, Ca 2 Pb 3 (PO 4 ) 3 Cl, space group P6 3 /m, a = 9.857(1), c = 7.130(2) Å, V = 599.9(2) Å 3 , Z = 2, is a new mineral from the Capitana mine, Copiapó, Atacama Province, Chile and has been identified from numerous other deposits world-wide. At the Capitana mine, it occurs as transparent, colorless, ta…
Thin films of metallophthalocyanine (MPc,M=Co,Ni) evaporated onto a “5×20” reconstructed Au(001) substrate at room temperature have been investigated by employing low energy electron diffraction (LEED) and ultraviolet photoelectron spectroscopy (UPS). The LEED images from NiPc thin films show that the overlayers are h…
The SOFC group at Forschungszentrum Juelich has assembled and tested more than 220 SOFC stacks during the last 10 years, rated between 100 W and 15 kW. The topics of high‐performance materials, corrosion, materials compatibility, and cost‐effectiveness, including manufacturing processes, etc., are being continuously a…
Poly[(R)-3-hydroxybutyrate] (PHB) depolymerase from Ralstonia pickettii T1 (PhaZ(RpiT1)) adsorbs to denatured PHB (dPHB) via its substrate-binding domain (SBD) to enhance dPHB degradation. To evaluate the amino acid residues participating in dPHB adsorption, PhaZ(RpiT1) was subjected to a high-throughput screening sys…
The centric diatom order Thalassiosirales includes all diatoms with a fultoportula (strutted process), a feature now recognized as a synapomorphy for the lineage. Within Thalassiosirales, Thalassiosira is perhaps the most taxonomically and morphologically diverse genus, and at least two distinct morphological groups h…
Ultraviolet photoemission spectroscopic (UPS) and x-ray photoemission spectroscopic (XPS) characterizations of indium tin oxide (ITO) surfaces prepared in ambient environment significantly lower the work function of the ITO surface. This artifact complicates the investigation of ITO surfaces and interfaces using XPS a…
The dielectric properties of high density amorphous ice, which is produced by slow isothermal pressurization $(\ensuremath{\sim}0.1\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}\phantom{\rule{0.3em}{0ex}}{\mathrm{h}}^{\ensuremath{-}1})$ at $130\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, have been studied by dielectric spectrosco…
The crystal structure of [Fe(bt)2(NCS)2] (A) was determined by X-ray diffraction at 293 and at 150 K in order to analyze the structural changes associated with the spin transition. The space group is P1 with Z = 2 at both temperatures. Lattice constants are as follows: a = 8.5240(4), b = 11.0730(6), c = 12.5300(8) at…
Abstract The gelatinous layer (G-layer) formed on the lumen wall in early- and latewood fibres of poplar and birch tension wood was characterised using a novel molecular marker specific for crystalline cellulose in conjunction with fluorescence and FE-SEM microscopy. Crystalline cellulose was localised using a cloned…
To evaluate the appropriate time frame for applying mechanical stimuli to induce mesenchymal stromal cell (MSC) differentiation for ligament tissue engineering, developmental cell phenotypes were monitored during a period of in vitro culture. MSCs were seeded onto surface-modified silk fibroin fiber matrices and cultu…
We have applied one-dimensional (1D) 1 H MAS NMR, 27 Al → 1 H CP MAS NMR, as well as 2D 27 Al triple-quantum (3Q) MAS NMR, 27 Al → 1 H heteronuclear correlation (HETCOR) and high-resolution 3QMAS/HETCOR NMR techniques to KAlSi 3 O 8 (Or), NaAlSi 3 O 8 (Ab) and NaAlSiO 4 (Ne) glasses containing 0~2 wt% H 2 O to shed li…
It has been shown that a metal film with a one-dimensional array of subwavelength cut-through slits can be accurately modeled as an anisotropic and uniform metamaterial film with nondispersive electric permittivity [epsimacr] and magnetic permeability [mumacr] tensors. This model has an interesting scaling property: T…
A layer-by-layer assembly composed of avidin and 2-iminobiotin-labeled poly(ethyleneimine) (ib-PEI) was prepared on the surface of a platinum (Pt) film-coated quartz resonator, and an electrochemically induced disintegration of the avidin-ib-PEI assembly was studied using a quartz crystal microbalance. The resonance f…
Photoinduced electron transfer (ET) and excitation energy transfer (ENT) reactions in monomer and slipped-cofacial dimer systems of a directly linked Zn porphyrin (Por)-Zn phthalocyanine (Pc) heterodyad, ZnPc-ZnPor, were investigated by means of the picosecond and femtosecond transient absorption spectroscopies. In th…
Removal of organic compounds and inorganic nutrients from aquaculture wastewaters prior to discharge can not only minimize deterioration of receiving water quality, but it could also be further reused to culture prawn, fish and shellfish. Chitosan can be used as a coagulant, adsorbent, or bactericide; therefore it has…
A Comment on the Letter by Li Liu et al., Phys. Rev. Lett. 95, 117802 (2005). The authors of the Letter offer a Reply.Received 20 September 2005DOI:https://doi.org/10.1103/PhysRevLett.97.189802©2006 American Physical Society
G. PELZL*†, S. DIELE†, A.JÁKLI‡ and W. WEISSFLOG† †Martin‐Luther‐Universitat Halle‐Wittenberg, Institut fur Physikalische Chemie, Muhlpforte 1, 06108 Halle (Saale), Germany ‡Liquid Crystal Institut...