Nanoplasmonics: The physics behind the applications
The field of nanoplasmonics is young but rich in phenomena that have inspired practical uses in physics, biomedicine, environmental monitoring, and national security.
Materials Literature
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Porphyrin Derivatives as Optical Molecular Sensors
In this Doctorate Thesis project, a small library of four structurally related melamine-bridge bis(porphyrin-ZnII) receptors, was synthesized The coordination properties of these porphyrin derivatives has been investigated by UV-vis spectroscopy for a series of aliphatic diamines of general formula H2N (CH2)n NH2 (n =…
Single-Molecule Fluorescence Studies Of Metalloregulators, Metalloenzymes, And Nanocatalysts
This work presents the development and application of single-molecule fluorescence-based methodologies to study bio-inorganic systems and catalysis of nanostructured materials. Single-molecule fluorescence microscopy was used to examine: (i) protein-DNA interactions using single-molecule fluorescence resonance energy…
Advanced Materials For Next-Generation Lithography: Self-Assembling Block Copolymers And Inorganic Nanoparticle Photoresists
The constant demand for increased circuit density and higher resolution patterning calls for simultaneous advancements in materials chemistry. A variety of possible approaches for next-generation lithography are explored, centering on the use of directly patternable self-assembling block copolymers, along with hafnium…
Design And Characterization Of An Embedded Amperometric Analyzer For Field-Portable Electrochemical Applications
A novel miniaturized amperometric analyzer with enhanced performance was developed to meet the need of field-portable, wide adaptable, user friendly, and cost effective electrochemical detection in various application fields. Based on the new MSP430FG479 microcontroller, the embedded system was designed to either oper…
Anisotropic Etching Of Si(100) In Aqueous Solutions
The microelectronics industry has long sought an aqueous etchant that could produce atomically flat Si(100) surfaces by anisotropic etching. This dissertation shows that near-atomically-flat Si(100) surfaces can be produced by an aqueous silicon etchant - 40% NH4F (aq.). The etching of Si(100) in 40% NH4F (aq.) produc…
Stress Corrosion Susceptibility Coefficient and Lower Threshold Stress Intensity Factor of Sintered Hydroxyapatite Ceramics in 37℃ Distilled Water
37℃蒸留水中でのハイドロキシアパタイト(Hydroxyapatite : HAP)焼結体の疲労パラメータと下限界応力拡大係数をPost-Indentation 法を用いて測定した。緻密なHAP 焼結体表面にビッカース圧子を圧入し、圧痕端から発生するMedian / Radial crack のSbucritical crackgrowth(SCG)挙動を測定した。その結果、37℃蒸留水中でのHAP 焼結体の疲労パラメータは、わずかに圧子圧入荷重依存性を示すものの、12.5〜19.0の範囲であり、動疲労試験から求められた疲労パラメータと良い一致を示した。また、測定したSCG 挙動からき裂先端の応力拡大係数KI とき裂の成長速度V…
Transitions de phases dans les argiles : influence de la minéralogie et de la morphologie : comportement sous écoulement et sous champs
L’objectif de ce travail est d’étudier les transitions de phases sol-gel et isotrope-nématique dans des suspensions de smectites dioctaédriques en fonction de la morphologie et de la nature minéralogique des argiles. Bien que tous les systèmes étudiés présentent une transition sol-gel à de faibles fraction volumique,…
Modélisation de la fragmentation dynamique par la méthode des éléments discrets
L'objectif de ce travail de thèse a été de modéliser avec une méthode aux éléments discrets la fracturation en tension, et plus particulièrement la fragmentation dynamique, sur des matériaux fragiles pour de hautes vitesses de déformation. La fragmentation est un phénomène irréversible, non linéaire et aléatoire. Elle…
Contribution à la compréhension et à la modélisation du comportement mécanique de matériaux composites à renfort en fibres végétales
L’industrie des matériaux composites ne cesse d’évoluer et de croître en mettant en place de nouveaux matériaux et de nouvelles technologies. En substitution des matériaux d’origine fossile que les matériaux d’origine naturelles (et surtout végétales) commencent à voir le jour. C’est dans ce contexte que notre travail…
UJI AKTIFITAS PRODUK MODIFIKASI SISTIN DENGAN PEG 400 SEBAGAI INHIBITOR KOROSI BAJA KARBON DALAM MEDIA HCl 0,5 M JENUH CO2
HCl banyak digunakan dalam beberapa proses industri, terutama untuk menghilangkan kerak dan karat karena dapat melarutkan oksida pada permukaan logam dengan cepat. Tetapi media asam tersebut dapat mengkorosi bagian dalam logam. Sehingga perlu ditambahkan inhibitor untuk mereduksi korosi yang terjadi. Penelitian ini be…
Correlation between Superhydrophobicity and the Power Spectral Density of Random Rough Surfaces
peer reviewed
Dimensionamiento de subestaciones eléctricas de media tensión aplicativo en java
Esta Versión 2.0 del aplicativo DimeSEMT se desarrolló empleando el lenguaje de programación Java, el entorno NetBeans IDE 6.7.1 utilizado por gran cantidad de plataformas software. Como punto de partida, se utilizó el aplicativo DimeSEMT desarrollado en ambiente de programación Microsoft Office Excel presentado como…
Síntese não-convencional para polianilina: radiação x, radiação , radiação ultravioleta e ultrassom
Polianilina (PANI), na forma de sal de esmeraldina, e compósitos de polianilina e prata (PANI/Ag) foram sintetizados por via não convencional, utilizando-se radiação ionizantes (raios X e γ), ultravioleta e ultrassom, em lugar de oxidantes químicos ou eletroquímicos normalmente empregados na síntese da PANI. Nos dois…
ESTRUTURA DO MICROFITOPLÂNCTON NO ARQUIPÉLAGO DE SÃO PEDRO E SÃO PAULO (Lat. 0056 2 N e Long. 2920 6 W): ESTIMATIVA DA BIOMASSA EM CARBONO ATRAVÉS DO BIOVOLUME CELULAR
O presente trabalho foi desenvolvido no Arquipélago de São Pedro e São Paulo (lat. 0056 2‖ N e long. 2920 6‖ W), com o objetivo de descrever a estrutura da comunidade fitoplanctônica e a estimativa da biomassa através do biovolume celular. Um protocolo de análise de rotina laboratorial foi elaborado tentando contrib…
Jave is one (' ehad) in Dt 6,4-9
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Desenvolvimento de uma nova metodologia para a detecção de pesticidas aromáticos em meio aquoso, utilizando β-ciclodextrinas e quantum dots de CdTe incorporados em hidrógels de agarose
Os organofosforados caracterizam-se como uma classe importante de pesticidas, atuando como inibidores da atividade enzimática da acetil colinesterase (AChE). Dentre os organofosforados de uso permitido no Brasil, destacamos o clorpirifós (CPF). Neste trabalho, desenvolveu-se novas metodologias para a obtenção de Qds d…
Final Report, Eastern Painted Bunting Monitoring
Final report for the Eastern Painted Bunting Monitoring project (NG07-101), which was conducted between July 1, 2007 and January 31, 2011. Includes descriptions of objectives, study area, methods, habitat types, surveys, data preparation, data analysis, and results.
Biopolymer composite based on natural and derived hemp cellulose fibres
The aim of this research was to study the effect of pre-treatment and modification processes on the properties of hemp cellulose fibre for biopolymer composites application. Hemp fibres have been modified by various extraction, swelling, chemical and enzymatic treatments. The morphology and mechanical properties of th…
Synthesis of Hyper Crosslinked Polymer Particle Having Hydroxyl Group
현탁중합에 이은 프리델 크래프츠 촉매에 의한 hyper crosslinking 반응 및 hydrolysis반응으로 hydroxyl 반응 관능기를 포함하는 hyper crosslinked polymer particle(HCPP)을 합성할 시, 1) 각 단량체의 함량 변화에 따른 HCPP의 표면 모폴로지, 기공 크기 및 분포도의 변화, 2) hyper crosslinking 반응조건 변화에 따른 HCPP의 BET 비표면적 값의 변화 및 3) CO2 초임계 건조공정을 이용한 HCPP에서의 미반응 잔류 단량체, 올리고머 및 촉매의 제거 등에 관해 연구하였다. 이번 연구를…