Materials Literature
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CO2 emissions are a significant environmental problem which has garnered global interest from both the scientific and political community. One method to reduce emissions is to capture CO2 and convert it to useful products, such as chemical feed-stocks. A method to achieve this is via co-electrolysis of CO2 and H2O, us…
Introduction: The properties of supercritical carbon dioxide (scCO2) have made it attractive in numerous industries and in a variety of applications [1-3]. The need for compatibility of materials with scCO2 has been identified as a stumbling block for even wider application in industry [4-6]. An expanded understanding…
In polymer membrane fuel cells (PEMFC) the performance as well as the degradation strongly depends on the water balance inside the fuel cell. The membrane must be humidified for a sufficient ion conductivity, but on the other side the excess product water needs to be removed from the fuel cell in order to avoid floodi…
Carbon nanotubes have strong assets for future integrated single-photon sources since their working wavelength can easily be tuned to the telecom C band by choosing an appropriate diameter [1]. In addition, they show a pronounced antibunching both at low and room temperature[2,3]. Nevertheless, the practical implement…
In polymer crystals (in particular, polyethylene), changes in the axial and contour lengths of skeletal interatomic bonds in chain molecules under mechanical loading (stretching) and heat treatment (heating) were measured using X-ray diffractometry and Raman spectrometry. The performed analysis of the measured force a…
The alkaline membrane fuel cells (AMFCs), which use the anion-exchange membranes to display the proton-exchange membranes with OH- anions instead of H+ ions, have aroused new interest due to their faster electrokinetics, lower fuel crossover, reduced CO poisoning, and use of non-precious metal catalysts 1,2.In the dev…
The modeling and simulation landscape for fuel-cells has increased dramatically over last years. A number of commercial and OpenSource (e.g. OpenFCST, FAST-FC, DuMux) software packages are available to the aspiring researcher or engineer in academia and industry. The complexity ranges from purely analytic models with…
The dimensional effect previously observed in various matrices for 2,6-polyphenylquinoline containing oxygen bridge and carbazolediyl groups is confirmed for phenylamine-containing 2,6-polyphenylquinolines with carbazole- and indolocarbazolediyl moieties in a polymethyl methacrylate matrix. The effect is observed from…
Their remarkable light absorption and energy transport characteristics make single-wall carbon nanotubes (SWNTs) intriguing candidates for photovoltaic applications. Here, we study the photophysical properties of polymer wrapped SWNT films with varying thickness, so as to help identify processes which may affect devic…
At the present time, semiconductor process technology node is going under 10nm from 20~30nm base. The 1X nm design rule will be general trend in the next few years. In this situation, the Chemical Mechanical Planarization (CMP) is focusing on the fine defect which is under 20nm. At this conference, I would present the…
We explore the design of support for Co-based water oxidation electrocatalysts. While earth abundant metals (EAM) have adequate conductivity, they lack the porosity provided by carbon support. To alleviate this problem and make the electrode more three dimensional, we demonstrate the utility of electrodeposited metal…
Developing efficient catalysts based on inexpensive and abundant materials for the sluggish oxygen reduction reaction (ORR) constitutes one of the grand challenges in the fabrication of commercially viable fuel cell devices and metal–air batteries for future energy applications. Despite recent advances in developing a…
ZnO thin films have wide application areas due to its versatile properties as transparent conductors, wide-bandgap n-type semiconductors, gas sensor materials, and etc. We have performed a systematic investigation on ultraviolet-assisted CVD (chemical vapor deposition) method. Ultraviolet irradiation during the deposi…
In this study, we propose a highly sensitive electrolyte–insulator–semiconductor (EIS) pH sensor witha layer of novel metal-oxide. We compared the ZnO and Ti-doped ZnO sensing membrane applied in EIS structure and investigated the characteristics of Ti-doped ZnO sensing membrane. Furthermore, we studied the sensing pe…
It is shown that modulation of the superluminescence intensity on a characteristic time scale on the order of a few picoseconds may occur in a semiconductor because of relaxation oscillations that result from the “healing” of local perturbations of the quasi-Fermi distribution of nonequilibrium electrons in energy spa…
There is an increased interest in very high dielectric constant (high-k) material studies due to their potential applications in energy storage elements. In this aspect, the perovskite materials seem to achieve very high-k values [1]. In this study, the focus has been to deposit thin films of CaCu3Ti4O12. These films…
A variety of hypotheses have been put forward as to the nature of secondary alteration. They were tested by using the amount of insoluble SiO 2 accumulated in the rocks (Q) as the index of secondary alteration degree. This parameter allows any sample to be characterized with the degree of its secondary alteration. By…
In this paper, piezoelectric ceramics with the composition of (Na0.525K0.4425Li0.0375)(Nb0.8975Sb0.065Ta0.0375)O3 + 0.3 wt% CoO + x CuO (0.005≤x≤0.025) (abbreviated to NKL-NST) were fabricated for ultrasonic sensor application. The effects of CuO addition and sintering on the microstructure and the piezoelectric prope…
Introduction: Lithium ion batteries (LIB) are considered to be a promising solution for various energy storage applications owing to their high energy density. These batteries have grown in popularity in recent years and are often found integrated into portable electronic devices and electric vehicles. In order to sup…
Non noble metal "earth abundant" electrocatalysts will significantly reduce the costs and make it possible to use electrochemical water splitting (electrolysis) on a very large scale. Non noble metal catalysts can be an effective replacement even if their electrochemical activities are a fraction of their noble metal…