Materials Literature
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It has been realized that resonance frequencies of imperfect acoustic cloaking based on a small perturbation of the transformation acoustics in ℝ 2 are located near Dirichlet eigenvalues of the cloaked region [Chin. Phys. Lett. 26 (2009) 014301 ; 29 (2012) 124301 ]. In this work, we study the performance of the three-…
Currently, cell culture systems that include nanoscale topography are widely used in order to provide cells additional cues closer to the in vivo environment, seeking to mimic the natural extracellular matrix. Electrospinning is one of the most common techniques to produce nano fiber mats. However, since many sensitiv…
Rural state highways in the Hawkes Bay region of New Zealand present a significant engineering challenge to maintain safe, skid resistant road surfaces. This is a result of tight curvilinear alignments, heavy commercial traffic that travels at comparatively high speed and local surfacing aggregates with a relatively l…
The potassium double tungstates KY(WO4)2, KGd(WO4)2, and KLu(WO4)2, are excellent host materials for rare-earth (RE) doped waveguide amplifiers and lasers, because RE ions exhibit very large absorption and emission cross-sections in these materials. Already the first planar waveguide laser demonstrated in KY(WO4)2:Yb3…
Abstract : The objective of this project is to develop an in-depth understanding of the influence of extrinsic and intrinsic microstructural parameters on dynamic response and failure behavior of Al-Cu alloys through carefully planned and fully instrumented parametric experiments and detailed microstructural character…
该文是一篇近两个月的锂电池文献评述,我们以“lithium”和“batter＊”为关键词检索了Web of Science从2014年2月1日至2014年3月31日上线的锂电池研究论文,共有1203篇,选择其中100篇加以评论.层状氧化物正极材料的研究主要集中于包覆等表面层改性对材料充放电循环寿命的影响,也有对材料表面结构的分析研究,高电压的尖晶石结构LiNi0.5M1.5O4材料主要研究了掺杂和表面包覆的作用,磷酸铁锂的研究主要是关于材料制备的.高容量的Si基负极材料一直是研究的热点,碳材料与Ge、Sn等复合负极材料、固态电解质、电解液添加剂、锂空电池、锂硫电池的论文也有多篇.理论模拟工作包括Si负极材料嵌锂研究和正极材料的动力…
In recent years, freight railways in Canada and the United States have had problems with wheels, through vertical split rim (VSR) wheel failures, in particular. As axle loads have increased, these have become more apparent. This article investigates the role of axial residual stress in those failures, in the face of n…
This thesis is primarily aimed at the development of new functional organic materials based on two classes of important π-conjugated molecular building blocks, namely conjugated oligomers and tetrathiafulvalene analogues (TTFVs). While rational molecular design has been the overarching theme of my synthetic and charac…
Magnetic materials have been coupled to conventional metamolecule structures to create magnetic hybrid metamolecules, with new opportunities. This approach brings the rich array of nonlinear effects found in magnetic materials into metamaterials, and has proven successful in adding functionalities such as magnetic tun…
This thesis outlines the development and application of methods for characterization of nanostructured biomaterials, specifically, collagen. Collagen is the most abundant protein in the human body and plays an important structural role. Therefore, research on the structural and mechanical properties of this protein is…
Wood is an important renewable material used by humans for a variety of downstream applications. The basic subcellular structure in wood is the cell wall, mainly consisting of the cross-linked polymers cellulose, hemicellulose, and lignin. Xylan is the main hemicellulose found in angiosperm wood, and its biosynthesis…
The green synthesis of nanoparticles that have environmentally acceptable solvent systems and eco-friendly reducing agents is of great importance. Meanwhile, the synthesis of metal nanoparticles of different sizes, shapes, chemical composition and controlled monodispersity is a key area of research in nanotechnology b…
Rail grades produced within Australia have been limited to the as-rolled and heat-treated (head hardened) C-Mn grades since commencement of rail production at the Whyalla Steelworks. The characteristics of these two grades are reflected in the current Australian standard for steel rails. In response to the increasing…
El present projecte estudia l’aliatge coure-crom, concretament Cu-Cr0.3. Es tracta d’un aliatge que desperta gran interes per les seves elevades propietats tan electriques com mecaniques aixi com per la seva resistencia a la corrosio. La gran afinitat que presenta el crom amb l’oxigen genera un greu problema a l’hora…
Természetes töltőanyagot és elasztomert tartalmazó PP kompozitok szerkezetét befolyásoló tényezőket, valamint a szerkezet tulajdonságokra gyakorolt hatását vizsgáltuk. A háromkomponensű kompozitok szerkezete eltérő lehet: függetlenül diszpergált, részlegesen vagy teljesen beágyazott. A szerkezet függ a feldolgozás kör…
Οι υψηλές θερμοκρασίες λειτουργίας των κελιών καυσίμου στερεού ηλεκτρολύτη (Solid Oxide Fuel Cells - SOFCs), οδηγούν σε σημαντική επιβάρυνση των σημείων συνένωσης και στεγανότητας των στοιχείων των επί μέρους εξαρτημάτων των κελιών, που διατάσσονται σε στοιβάδες. Στα σημεία συνένωσης και εναλλακτικά στα μέχρι σήμερα χ…
Zur wirtschaftlichen Herstellung von industriell gefertigten Betonbauteilen werden geringe Taktzeiten angestrebt, um die Formen und Schalungen moeglichst schnell wiederverwenden zu koennen. Dafuer ist es notwendig, dass der Beton eine hohe Fruehfestigkeit entwickelt, um die noetige Ausschalfestigkeit zu erreichen. Um…
Honors (Bachelor's)
Faculty advisers: Bharat Jalan, Chris Leighton
You know the drill: lotsa pretty pix, not much yap. Our first stop of the day was the Fruita Paleontological Area, which has a fanstastic diversity of Morrison animals, including the mammal Fruitafossor and the tiny ornithopod Fruitadens . Plus it's a pretty epic landscape, especially with the clouds and broken light…