Materials Literature
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The appearance of topologically protected states at the surface of an ordinary insulator is a rare occurrence and to date only a handful of materials are known for having this property. An intriguing question concerns the possibility of forming topologically protected interfaces between different materials. Here we pr…
A series of amphiphilic ABA triblock copolymers containing polyisobutylene (PIB) and poly(p-(2-(4-biphenyl)perfluorocyclobutoxy)phenyl methacrylate) (PBPFCBPMA) segments was synthesized via sequential living carbocationic polymerization and atom transfer radical polymerization (ATRP). Living carbocationic polymerizati…
Low-temperature scanning tunneling microscopy (STM), scanning tunneling spectroscopy and dI/dV mapping techniques have been applied to study double-decker DyPc₂ molecules on Pb(111) films grown on silicon wafers. The DyPc₂ molecules firstly self-assemble into a monolayer where two neighbouring molecules form an azimut…
We have measured cross sections for the ionization of the K shell by electrons with energies from the respective thresholds up to 100 keV, for Au and Bi. The experimental values are obtained by dividing the number of counts in the K α peak by the number of counts in an energy interval near the tip of the bremsstrahlun…
This paper presents a controllable method for the high-throughout fabrication of pyramidal silicon nanopore arrays (PSNAs). Using this method, square nanopore arrays with an average size of 60 nm, rectangular nanopores with different length–width ratios, and nanoslits with feature sizes as small as 13 nm were created.…
In the present work, we describe the synthesis of two single-chain phenylene-modified bolalipids, namely PC-C17pPhC17-PC and PC-C17pPhC17-OH, with either symmetrical (phosphocholine) or asymmetrical (phosphocholine and hydroxyl) headgroups using a Sonogashira cross-coupling reaction as key step. The temperature-depend…
Monolithic zirconia aerogels were prepared using zirconium oxychloride (ZrOCl2) as the precursor in the presence of the epoxide (PO) in both ethanol and mixed ethanol–water solutions, respectively. The effects of nitric acid and water contents on the gel formation behavior and the properties of the resulting aerogel w…
The goal of this study is to better understand important reactions responsible for the suppression of anhydrosugars during the pyrolysis of microcrystalline Avicel, ball-milled Avicel, levoglucosan, cellobiosan, and Douglas fir at varied pyrolysis conditions (heating rate 100 °C/s, temperature 300–500 °C, H 2 SO 4 add…
Pure surface-tension-driven flow is a unique type of flow that can be controlled through external manipulation of thermal and/or mechanical boundary conditions at the free liquid surface where the entire driving force for the convection is generated. This unique feature has been exploited in recent studies for the act…
In this study, ultrafast optical transient absorption and X-ray transient absorption (XTA) spectroscopy are used to probe the excited-state dynamics and structural evolution of copper(I) bicinchoninic acid ([Cu(I)(BCA)2](+)), which has similar but less frequently studied biquinoline-based ligands compared to phenanthr…
The adducts formed between trans-(dimethylamino)(methylamino)dichloridoplatinum(II), [t-PtCl2(dma)(ma)], and two model proteins, i.e., hen egg white lysozyme and bovine pancreatic ribonuclease, were independently characterized by X-ray crystallography and electrospray ionization mass spectrometry. In these adducts, th…
Abstract By using the Suzuki–Miyaura reaction, a variety of 1,7‐ and 1,12‐disubstituted and 1,6,7,12‐tetraaryl‐substituted perylenetetracarbox‐3,4:9,10‐diimides have been synthesised starting from the corresponding halogen derivatives. Until now, the 1,12‐ and 1,6,7,12‐sustitutions were difficult to access and only si…
Aluminium alloy (AA7075) is largely used in various fields of transport applications, including marine, automotive and aviation and aerospace due to their high strength-to-density ratio. The present work deals with the influence of TiC on the mechanical behavior of AA 7075 composites. TiC is particularly attractive as…
A hybrid Al7075 metal matrix composites have been fabricated through liquid metallurgy route (Stir Casting method) using Al2O3 and B4C as reinforcement materials. The effect of weight percentage of reinforcement materials on mechanical properties of the composites have been studied by varying the weight percentage of…
Abstract New quinolines bearing a 2,2′‐bithiophene motif have been prepared through Ru‐ and In‐catalyzed reactions as well as by Suzuki cross‐coupling reactions. The novel quinolines have been characterized by using EI‐HRMS and NMR spectroscopy. Additionally, the molecular structures of the novel quinolines were confi…
Nanocrystalline Cd1−xFexSe thin films were successfully deposited onto glass substrates at temperature 573 K from aqueous solutions of ferric chloride, cadmium chloride and selenium powder using the chemical spray technique. The structural, morphological, compositional, electrical and optical characterizations were ca…
Islet Amyloid Polypeptide (IAPP) is a 37-residue hormone cosecreted with insulin by the β-cells of the pancreas. Amyloid fiber aggregation of IAPP has been correlated with the dysfunction and death of these cells in type II diabetics. The likely mechanisms by which IAPP gains toxic function include energy independent…
A series of mono- (MPTTF) and bis(pyrrolo)tetrathiafulvalene (BPTTF) derivatives tethered to one or two C60 moieties was synthesized and characterized. The synthetic strategy for these dumbbell-shaped compounds was based on a 1,3-dipolar cycloaddition reaction between aldehyde-functionalized MPTTF/BPTTF derivatives, t…
The effect of humidity on boron diffused and undiffused silicon samples passivated by aluminum oxide (Al2O3) synthesized by plasma-assisted atomic layer deposition (PA-ALD) is investigated. It is found that samples exposed to a saturated humidity ambient show a much higher degradation rate than those exposed to 85% re…
The integrity of a reactor pressure vessel (RPV) related to pressurized thermal shocks (PTSs) has been extensively studied. This paper introduces the method of using fracture mechanics for the integrity analysis of a RPV subjected to PTS transients. A 3-D finite element (FE) model is used to perform thermal and fractu…