Materials Literature
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Using a novel bi-axial confocal rheoscope, we investigate the structure and rheology of sheared colloidal suspensions under confinement. Consistent with previous work [X. Cheng \textit{et al., Proc. Natl. Acad. Sci. U. S. A.}, 2011, 109, 63], we observe a vorticity-aligned string phase in moderate concentrated colloid…
A rail is an important and the most heavily laden element in the railway superstructure, because it \nfunctions as both the running surface used for vehicle guidance and the beam directly transmitting the \nload of the vehicles to the ballast bed and the railway substructure. The first part of the thesis describes \nt…
A study of exchange bias systems has been made focusing on the characteristics of the interfacial spin clusters found in-between the bilayers. The materials studied were primarily IrMn (10nm) / CoFe (2nm) thin films of varying grain sizes. They were selected as the bulk properties have already been well characterised…
Nanotechnology interest and research has increased dramatically over the last decade, but there remain fundamental limitations and barriers to the fabrication of ever smaller devices. To overcome these limitations, new nanofabrication methods and novel nanoscale systems must be explored. To form nanoscale systems, we…
Abstract : This Phase III research proposal was a continuation effort on the Phase I and II work. The overall program focuses on the development of new explorations towards the development of better understanding of non-linear ultrasonic methods for the quantitative materials state evaluation and characterization of d…
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
Les dispersions col·loidals, un terme encunyat pel cientific escoces Thomas Graham el 1861, han estat objecte d’interes en diferents arees cientifiques durant mes d'un segle. Una dispersio col·loidal es caracteritza per l’existencia d'una fase dispersa uniformement distribuida dins un medi dispersiu. Diferents compost…
We obtain atomic decomposition formulas for weighted Bergman spaces , , where belongs to the class of regulated domains. We are able to construct atomic decomposition directly on a give regulated domain by using its geometric properties.
It In alcuni stagni costieri della Sardegna centro-occidentale (Oristano) vive una Ruppia, che per ora indicheremo come pseudotuberosa, caratterizzata dalla presenza, ai nodi del rizoma, di piccole gemme ibernanti, dette turioni, in grado di germinare come fossero semi, che la diversificano dalle altre entita del gene…
[EN] The present memory has been divided into two different sections, the first devoted to the production, by means of microwave technology, of carbon xerogels with tuneable properties, while the second is focused on the evaluation of these laboratory-synthesized carbon xerogels as active materials in supercapacitors.…
The project was component of the US DOE, Metal Hydride Center of Excellence (MHCoE). The Sandia National Laboratory led center was established to conduct highly collaborative and multi-disciplinary applied R&D to develop new reversible hydrogen storage materials that meet or exceed DOE/FreedomCAR 2010 and 2015 system…
The purpose of the work presented in this dissertation was to investigate the correlation between the particle size of crystalline active pharmaceutical ingredients (APIs) and their solid-state NMR (SSNMR) proton spin-lattice relaxation times (1H T1) using model compounds. Dicumarol and salicylic acid were selected as…
The helium coolant in high-temperature reactors inevitably contains low levels of impurities during steady-state operation, primarily consisting of small amounts of H{sub 2}, H{sub 2}O, CH{sub 4}, CO, CO{sub 2}, and N{sub 2} from a variety of sources in the reactor circuit. These impurities are problematic because the…
The Hanford Tank Waste Treatment and Immobilization Plant (WTP) is being constructed to treat the 56 million gallons of radioactive waste stored in 177 underground tanks at the Hanford Site. The WTP includes a pretreatment facility to separate the wastes into high-level waste (HLW) and low-activity waste (LAW) fractio…
This chapter contains sections titled: Introduction Axisymmetric Model Constitutive Models of the Adherends and FMGB Adhesive Variational Approach Solution Procedure Results and discussion Summary
This paper reports the fabrication and evaluation of a high-frequency ultrasonic transducer based on a new lead-free piezoelectric material for intravascular imaging application. Lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO4(BZT-50BCT) ceramic with a high dielectric constant (~2800) was employed to develop a high-…
전기이중층 커패시터용 활성탄의 정전 용량 향상을 위해 우레아를 이용해 활성탄 표면에 펩티드 결합을 유도하였다. 우레아 도입에 따른 활성탄은 소성과정을 거쳐 안정화되었으며, 전기화학적 특성을 순환전류 전압법을 이용하여 정전 용량을 관찰하고, 임피던스를 통해 저항 변화를 관찰하였으며, 충방전 평가를 통해 싸이클 성능을 관찰하였다. 결과적으로 질소성 작용기의 도입으로 정전 용량은 기존 탄소재에 비해 약 22.9%의 향상을 이루었으며, 저항 감소 및 우수한 싸이클 성능을 나타냄을 확인하였다. In order to improve capacitance of activated…
The influence of the source gas supply sequence prior to growth and the NH3input partial pressure (PoNH3) on the nucleation of InN islands during the initial stages of hydride vapor phase epitaxy on a nitrided (0001) sapphire substrate was investigated. The crystalline quality of the InN layer after subsequent lateral…
Trace Elements Speciation Research Laboratory, Environmental and Analytical Chemistry Division, School of Advanced Sciences, VIT University, Vellore-632 014, Tamilnadu, India E-mail : badalmandal@vit.ac. in, badalkmandal@gmail.com Manuscript received online 12 April 2012, revised 22 June 2012, accepted 25 June 2012 Th…
In this research, fiber-optic pressure sensors were fabricated with rugate-structured porous silicon (RPS) diaphragms coated with PMMA (Polymethyl-Methacrylate). The reflectance spectrum of the PMMA/RPS diaphragm was almost the same as that of uncoated RPS diaphragm. However the mechanical strength of the PMMA/RPS dia…