Materials Literature
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The sixteenth international conference on X-ray Absorption Fine Structure, XAFS16, was held August 23–28, 2015, at the Karlsruhe Institute of Technology (KIT) in Germany. Since the first such meeting in 1981, the XAFS conference series has become the foremost international meeting covering developments and application…
Abstract ZnO nanowires have been grown by metalorganic chemical vapor deposition on sapphire substrates. The use of N2O and DEZn as oxygen and zinc precursors combined with high temperature leads to the spontaneous growth of vertical ZnO nanowires (NWs) on underlying three dimensional islands present at the bottom of…
U cijevi svakog vatrenog oružja dolazi do vrlo složenih i intenzivnih mehaničkih, toplinskih i kemijskih procesa prilikom paljbe. Materijal cijevi izložen je djelovanju višestrukih mehanizama trošenja materijala, poglavito njezin unutrašnji dio ili kanal cijevi, koji je u izravnom dodiru s projektilom. U radu su prouč…
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Završni rad se sastoji od teorijskog i eksperimentalnog dijela. \nU teorijskom dijelu opisane su osnovne metode za zaštitu od korozije, a detaljnije zaštita inhibitorima korozije: njihova podjela, značajke, djelotvornost, mehanizam te područje primjene hlapljivih inhibitora korozije. \nU eksperimentalnom dijelu rada i…
Avec le developpement des technologies de modelisation, les recherches sur les materiaux se sont d’abord etendues de l’echelle macroscopique a l’echelle microscopique, puis de l’echelle microscopique a l’echelle nanoscopique. Le developpement d'outils de modelisation moleculaire pour decrire et predire les proprietes…
Despite a plethora of applications ranging from quantum memories to high-resolution lithography, the current technologies to generate vector vortex beams (VVBs) suffer from less efficient energy use, poor resolution, low damage threshold, bulky size and complicated experimental setup, preventing further practical appl…
Diverse phenomena emerge at the interface between band insulators LaAlO3 and SrTiO3, such as superconductivity and ferromagnetism, showing an opportunity for potential applications as well as bringing fundamental research interests. Particularly, the two-dimensional electron gas formed at LaAlO3/SrTiO3(110) interface…
U prvom dijelu rada opisani su uvjeti korozijske postojanosti čelika i čeličnih ljevova, metode obrade površine čelika i čeličnih ljevova te mehanizmi korozije koji uobičajeno zahvaćaju nehrđajuće čelike i čelične ljevove. Definirani su čelični ljevovi i nehrđajući čelični ljevovi. Objašnjen je utjecaj legirnih elemen…
The paper was presented to study the microstructure and magnetic properties of Mo/[NdFeB/Mo] × 10/Mo multilayered films prepared by magnetron sputtering on Si(100) substrate. The SEM observation of microstructure showed that the specimen had fine multilayer structure and the NdFeB layers were successfully separated by…
U ovom radu je ispitan utjecaj temperature medija na pojavu rupičaste korozije kod nehrđajućih čelika. \nTeorijski dio rada objašnjava podjelu nehrđajućih čelika kao i njihova svojstva, te utjecaje i podložnosti pojedinim vrstama korozije od kojih je detaljnije objašnjena rupičasta korozija. \nEksperimentalni dio je o…
Dopants of transition metal ions in II-VI semiconductors exhibit a native 2+ valency. Despite this, 3+ or mixed 3+/2+ valency of iron ions in ZnO was reported previously. Several contradictory mechanisms have been proposed for explanation of this fact so far. Our ab initio calculations indicate that the Fe ion is a no…
At Fukushima, robots performed poorly at first but are now critical players in the cleanup.
Broadband antireflection coatings are commonly required in many silicon or III-V compound semiconductor based optoelectronic devices such as solar cells, photodetectors, and image sensors so as to enhance light conversion efficiency. Conventional approach using a single-layer antireflection coating is simple and commo…
U radu je ispitivan utjecaj plazmatskog nitriranja na titanovoj leguri Ti6Al4V koja je poznata po svojoj širokoj primjeni u medicini, zrakoplovstvu i visokonapregnutim konstrukcijskim dijelovim u strojarstvu. Plazmatskim nitriranjem na 600 °C u trajanju 9 sati, dušik difuzijom obogaćuje površinski sloj Ti6Al4V legure.…
Thermoelectric energy harvesters can have much higher conversion efficiency by implementing quantum dots/wells between the high temperature region and the low temperature region forming three-terminal inelastic thermoelectric energy conversion devices compared to the classic two-terminal Seebeck arrangement. To furthe…
The temperature dependences of g factors of underdoped YBa2Cu3O7-x (Tc approximates 86.5K) indicate that the pseudogap onset temperature T*( approximates 190 K) coincides with the phase boundary established by resistivity, Nernst effect, neutron diffraction and ultrasound measurements in YBCO phase diagram. The obtain…
We would like to comment that the prediction of Half-mtallicity in only B edge H-passivated zigzag boron nitride nanoribbons (ZBNNR-BH), by Zheng et al.1, is not correct as their interpretation is erroneous. Since it is well known that for a material, to be a half-metal, as a primary condition one type of spin channel…
Resin akrilik heat cured merupakan campuran antara monomer metil metakrilat dan polimer poli (metil metakrilat) yang dipolimerisasi dengan cara pemanasan. Proses polimerisasi tidak sempurna dan selalu menghasilkan monomer sisa. Kandungan monomer sisa yang tinggi dapat menyebabkan iritasi atau alergi terhadap jaringan…
Let $Δ$ be the optimal packing density of $\mathbb R^n$ by unit balls. We show the optimal packing density using two sizes of balls approaches $Δ+ (1 - Δ) Δ$ as the ratio of the radii tends to infinity. More generally, if $B$ is a body and $D$ is a finite set of bodies, then the optimal density $Δ_{\{rB\} \cup D}$ of…