Materials Science and Engineering Commons^™

Inkjet Printing Of Resistive-Type Humidity Sensor For Harsh Environments, Hamed Kazerani

Dissertations

A flexible resistive-type humidity sensor for harsh environments is successfully designed and fabricated by an inkjet printing method using a Dimatix materials printer (DMP-2800 series from Fujifilm). Construction of the sensors is based on inkjet printed interdigitated silver electrodes on a polyimide flexible substrate along with an inkjet printable polyaniline (PANi) as humidity sensitive material. A copolymer of ethylene and vinyl alcohol (EVOH) is used as sensor protective coating. Double strand water- soluble PANi ink is synthesized by polymerization of aniline monomers with poly(4- styrenesulfonic acid) (PSSA) as a template.

Manufactured devices showed high sensitivity (/% @ 45%RH) to humidity …

Magnetic Targeted Drug Delivery System In Gene Therapy, Weilong Lu

Theses

Drug delivery system is a method to transport the drug of the required amount accurately to the targeted diseased part. Recently, the concept of Magnetic Targeted Drug Delivery System (MTDDS), based upon magnetic particles under the action of an external magnetic field, exhibits considerable potential for a wide range of medical applications. Gene therapy is the insertion of genes into an individual's cells and tissues to treat diseases. As the recombinant virus vector has many limits and problems, more studies turn to the nonvirus vectors, which have transfection efficiency and low cytotoxicity. PLLA(poly(L lactic acid)) can be biodegradable and has …

Magnetic Iron Oxide Nanoparticles: Synthesis, Characteristics, Magnetic Behavior, And Biomedical Applications, Chengyin Fu

Theses

Magnetic iron oxide nanoparticles are attracting increasing attention due to their interesting properties that can be applied in a great number of applications such as catalysis and biomedicine. This thesis focuses on the synthesis, characteristics, and biomedical applications of iron oxide nanoparticles. The two most common iron oxides, including magnetite and maghemite, are discussed in this thesis.

For most of their applications, the magnetic behavior of iron oxide nanoparticles in a fluid is very important, especially, the high gradient magnetic separation of the particles from a nonmagnetic liquid medium, such as blood in the human body. A 2D model, which …

Simulation Of Polymer Solar Cell Characteristics By Amps-1d, Lu Zhang

Theses

Simulation of polymer solar cell characteristics is presented in this study. The solar cells are made of materials such as the following: Poly (3-hexylthiophene): [6, 6]-phenyl C61- butyric acid methylester (P3HT: PCBM) and poly[2,1,3-benzothiadiazole-4,7-diyl[4,4- bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene-2,6-diyl]]: [6, 6]-phenyl C₆₁- butyric acid methylester (PCPDTBT: PCBM) are used as active layer materials. Analysis of Microelectronic and Photonic Structures One Dimension (AMPS-1D) is a computer simulation tool for solar cell device characteristics. The first part of this study focuses on the performance and comparison of current-voltage (I-V) simulations of indium oxide (In₂O₃) and tin oxide (SnO₂) …

Glasses For Radiotherapy, Delbert E. Day

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Active Response Of Polymer Materials From External Stimuli – Solvents And Light; Grafting Reactions On Perovskite Layers, Jianxia Zhang

LSU New Orleans Theses and Dissertations

The active response of a series of polymeric materials was investigated. Both solvent activated and light activated thin films and wire systems show dynamic behaviors when exposed to different stimuli.

Solvent mediated fluxional behavior of polymer thin films involved extensive, rapid curling both on infusion and evaporation of good solvents. These films can be either lab-fabricated ones or commercial ones, and the curling behavior can be as fast as seconds. Conditions including polymer materials, chosen solvents, and film geometry can affect the behavior.

Methods that allowed for the creation and retention of distorted wire structures were also developed; the asymmetric …

Ultra-High Temperature Thermal And Mechanical Properties Of Zrb2-Based Ceramics, Greg Hilmas, Bill Fahrenholtz

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

High Temperature Mechanical, Oxidation And Shock Resistance Properties Of Hot Pressed And Spark Plasma Sintered Tib2-Based Ceramics, Bikramjit Basu, G.B. Raju, V. Jayaram, K.P.J. Reddy

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Where We Are With The Understanding Of Metal/Ceramic Interactions: The Case Of Transition Metal Borides, A. Passerone, F. Valenza, C. Artini, M.L. Muolo

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Correlation Of Shear Strength Between Longitudial And Transverse Specimens, Erasto A. Fernandez

LSU New Orleans Theses and Dissertations

In this thesis, new methods for shear strength are proposed and backed up through extensive experimentation, ABAQUS models and data analysis of Titanium welds of three different alloys. The results are compared with those obtained by using the procedure outlined by AWS B4 for calculating Shear Strength in the transverse and longitudinal directions; this equation is widely used by the American Welding Society (AWS) and all those in search of more efficient designs involving welding.

It is a well-documented issue that the equation provided by AWS yields a large discrepancy between the values for shear strength of longitudinal and transverse …

High Temperature Mechanical Properties Of Zirconium Diboride, L.J. Vandeperre, J. Wang, F. Giuliani

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Advanced Characterization Of Composite Ultra High Temperature Ceramic Systems, W.E. Lee, Emily Eakins, Heather Jackson, Doni Jayaseelan

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Microstructures And Thermal Conductivities Of Hot-Pressed Zrb2-Sic Ceramics With A Variety Of Sic Sources, Seongwon Kim, Chang-Sup Kwon, Sung-Min Lee, Yoon-Suk Oh, Hyung-Tae Kim, Byung-Koog Jang

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

A Cost Effective Screening Technique For Testing Uhtc Materials Using An Oxyacetylene Torch Flame, Anish Paul, Saranya Venugopal, Jon Binner, Bala Vaidhyanathan, Andrew Heaton, Peter Brown

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Uhtc-Based Hot Structures For Space Re-Entry: Lesson Learned And Future Perspectives, Luigi Scatteia

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Solid State Diffusion Bonding Of Zrc To Zr-Based Alloys, Andrew Gillen, Lyndon Edwards, Daniel Riley, George Franks

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Joining Of Ultra-High Temperature Ceramics, Laura Silvestroni, Diletta Sciti, Laura Esposito, Andreas Glaeser

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Low Temperature Synthesis And Sintering Of Mechanically Activated Zrb2 Powders, Mustafa Tuncer

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

Fusion Welding Of Zrb2-Based Ceramics, H.J. Brown, W.G. Fahrenholtz, G.E. Hilmas

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.

In-Situ Imaging And Strain Determination During Fracture In A Sic/Sic Ceramic Matrix Composite, Joaquin Ramirez, F. Stoltzenburg, K.T. Faber, J. Almer, D. Singh, J. Routbort

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.