Materials Literature
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With recent advancement in the semiconductor technology, various electronic gadgets have been designed and produced to keep up with the strong demand from end customers. Compared with the electronic products of twenty years ago, the electronic gadgets are now smaller, faster and have more functionalities as the semico…
The present work simulated the explosive forming of a torisperical dished head from the Al-5083 aluminum alloy against a male die. The simulation was used to investigate the strain distribution across the final product as well as to capture the complex nature behind this High Energy Rate Forming (HERF) technique. The…
Characteristics of velocity-fields and pressure-fields of a swirling flow in a disk shape planar solid oxide fuel cell (SOFC) were experimentally investigated with the aid of a particle image velocimetry (PIV). In the case of applying circle involute shape current collectors, a swirling flow was generated and its velo…
Pulsed Laser Deposition (PLD) is an emerging technology, which is versatile tool for thin-film research. From the first found in years 1980’s, PLD system has received an intensive development due to its wide-range application in various areas of thin-film and multilayer research. The advantages of PLD system including…
Import 11/07/2012
This article has been retracted at the request of the authors and under the agreement between the Editor-in-chief, Taku Demura and the authors.
Diatoms (Bacillariophyceae) and dinoflagellates (Dinophyceae) are the most numerous group of periphyton communities. Because it's primary production and diversity affect multiple trophic links of the chain, and thereby on biodiversity, gives them a great deal of attention in scientific research. Each research paper on…
Import 11/07/2012
Polymer has high flexibility and high elasticity, which make it a potential choice for applications such as packaging. However the applications are limited by low thermal and electrical conductivities of polymer. Addictive fillers can be introduced to increase the mechanical, electrical and thermal properties of polym…
When a bubble is formed in a temperature field, the surface tension effect is significant on the movement of the bubble. The phenomenon is important in the micro- or nano- scale manufacturing or in space activities. The present project is a study of the effects on the transport driven bubble by the temperature gradien…
Topological insulator, the new class of material with conducting surface and insulating bulk, is attracting much attention in research field. Theoretical calculations have predicted some material as topological insulators, and some of them have been verified experimentally. Experimental confirmation of topological ins…
ABSTRACT This paper demonstrates the dynamic stressing of viscous liquids in microfluidic channels. An infrared laser pulse is focused within the testing liquid in a microfluidic channel and a spherical shock wave near the interface is created. The shock is reflected by the free surface due to acoustic impedance misma…
The stabilization effects of Li on Si20Li20 cage clusters, as a special example of SinLin clusters, are studied by high accuracy all electron density functional theory calculations. This allows to assess the capability of Li to play a role similar to hydrogen in stabilizing silicon cages similar to SinHn (and CnHn), i…
Composite steel and concrete slabs are often used in the reconstruction of architectural monuments to replace timber elements. Insufficient awareness of the nature of the stress-strain state of steel-concrete slabs limits their use in the construction of residential housing. This article describes the composition, geo…
This project looks at the energy absorption ability of a Nickel-Titanium Shape Memory Alloy in the form of a circular thin-wall tube. Cyclic compression tests were conducted on the Ni-Ti specimen, where the specimen strain is incremented after every complete cycle of loading and unloading. The energy absorption of the…
В представленной статье рассматривается решение задачи повышения быстродействия микроболометров, величина тепловой постоянной времени которых составляет порядка 10 мс. Быстродействие может быть повышено до микросекунды, если поглощающий (термочувствительный) элемент выполнить в виде набора дипольных микроантенн, длина…
Tato prace je zaměřena na studium difuznich barierových výbojů v Penningovských směsich s argonem. Cilem je odhalit parametry, majici vliv na typ a homogenitu výboje. Ziskane poznatky jsou urceny k porovnani s numerickými výpocty. Hlavni důraz je proto kladen na fazi zapaleni výboje, ktera je sledovana pomoci velice r…
Dissertação de mestrado em Investigação Biomédica (Oncobiologia), apresentada à Faculdade de Medicina da Universidade de Coimbra
The RAFT polymerization is a versatile technique to synthesize polymers with narrow dispersity and high chain-end functionality. To enable a switch from RAFT to other polymerization protocols, the RAFT polymers were transformed via a novel end-group conversion into OH functional polymers. The procedure was employed to…
This project aims to design and analyze the energy absorption capabilities of various patterns on shells. The patterns tested were a trapezium and a pair of rectangles, placed on the center or a fixed distance apart. The project primarily on square shells was extended to hexagonal shell. Under quasi-static axial loadi…