Materials Literature
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We studied the excited-state behavior of a family of mono- and diprotonated derivatives of 2-phenylbenzimidazole in different solvents, using steady-state and time-resolved fluorescence spectroscopy. The species investigated were 2-(4'-amino-2'-hydroxyphenyl)benzimidazole (1), the diethylamino analogue 2-(4'-N,N-dieth…
In this paper we report on Indium Tin Oxide (ITO)-free spray coated organic photodiodes with an active layer consisting of a poly(3-hexylthiophen) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) blend and patterned poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) electrodes. External qu…
We review some results from the literature describing the structure and dynamics of polymer molecules adsorbed at liquid interfaces as well as their behavior in foams. The first part describes theoretical and experimental results concerning the structure and dynamics of model polymer systems, i.e. homopolymers and cop…
We argue that spin-sensitive quasiparticle scattering may generate electron-hole imbalance in superconducting structures, such as, e.g., superconducting-normal hybrids with spin-active interfaces. We elucidate a transparent physical mechanism for this effect demonstrating that scattering rates for electrons and holes…
The investigations deal with the contribution of the dry friction to the damage‐caused increase of the anisotropic material damping in composite materials. Plate specimens made of glass fiber reinforced epoxy were damaged in controlled impact tests using two different projectile's geometries at three different kinetic…
Four gold complexes were tested as a precursor for focused-electron-beam-induced deposition: [ClAu(III)Me2]2, ClAu(I)(SMe2), ClAu(I)(PMe3), and MeAu(I)(PMe3). Complexes [ClAu(III)Me2]2 and MeAu(I)(PMe3) are volatile, have sufficient vapor pressure at room temperature for deposition experiments, and were found to yield…
The impact of donor-acceptor substitution on optical and electronic properties of conducting polymers was investigated with time-dependent density functional theory (TDDFT). A series of donor-acceptor systems with thiophene, 3,4-ethylenedioxythiophene, and pyrrole as donors and 3,4-difluorothiophene, diketopyrrolopyrr…
Biodegradable and injectable in situ thermosensitive hydrogels were investigated for sustained delivery of pro- tein therapeutics in the treatment of ocular posterior segment neovascular diseases. A series of triblock (TB, polycaprolac- tone-polyethylene glycol-polycaprolactone (PCL-PEG-PCL), B-A-B) and pentablock cop…
In the long-wavelength limit, a periodic array of bottom-mounted vertical cylinders may be used as a homogeneous medium for liquid surface waves and their effective parameters, such as their refractive index, depending on the filling fraction of the cylinders. Based on this effective medium theory, a gradient index (G…
Double skin facade is one of the possible approaches to bioclimatic design. Bright architectural expression is combined with lots of potential natural heating and ventilation of the internal space of buildings. Double skin facade considered as an element of building heating, ventilation, or, finally, as an element of…
Degradation of material properties by high-pressure hydrogen is an important factor in determining the safety and reliability of materials used in high-pressure hydrogen storage and delivery. Hydrogen damage mechanisms have a time dependence that is linked to hydrogen outgassing after exposure to the hydrogen atmosphe…
The study presents several cases where use of specimens with reduced overall dimensions, i.e. mini specimens in the course of fatigue tests is advantageous. The high-cycle fatigue tests based on a developed method have been performed on mini specimens and normative specimens (comparative tests). The tests have been co…
Within the formalizm of Usadel equations the Josephson effect in dirty point contacts between single-band and three-band superconductors is investigated. The general expression for the Josephson current, which is valid for arbitrary temperatures, is obtained. We calculate current-phase relations for very low temperatu…
Porous GaN based LEDs produced by corrosion etching techniques demonstrated enhanced light extraction efficiency in the past. However, these fabrication techniques require further postgrown processing steps, which increases the price of the final system. Also, the penetration depth of these etching techniques is limit…
An isothermal entropy change of 240 nm (111)-oriented PMN–PT 65/35 film near the ferroelectric Curie temperature, relative cooling power (RCP) and change of heat capacity have been investigated. The extracted data characterized giant isothermal entropy change of more than 16 J/kg K in electric field shift ΔE of 455 kV…
Abstract A process to make self‐aligned top‐gate amorphous indium‐gallium‐zinc‐oxide (a‐IGZO) thin‐film transistors (TFTs) on polyimide foil is presented. The source/drain (S/D) region's parasitic resistance reduced during the SiN interlayer deposition step. The sheet resistivity of S/D region after exposure to SiN in…
This paper presents a short review of the aging mechanism modeling of proton exchange membrane (PEM) fuel cell in automotive applications. The fuel cell aging mechanism is particularly important for fuel cell transportation applications, because the degradation rates of a fuel cell could increase very fast when operat…
One of the major challenges that the ITER tokamak will have to face during its operations are disruptions. During the last few years, it has been proven that the global consequences of a disruption can be mitigated by the injection of large quantities of impurities. But one aspect that has been difficult to study was…
Controlling human pathogenic bacteria is a worldwide problem due to increasing bacterial resistance. This has prompted a number of studies investigating peptides isolated from marine animals as a possible alternative for control of human pathogen infections. Clavanins are antimicrobial peptides isolated from the marin…
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