Expanding Applications Of The Nano Intravital Device As A Platform For Exploring Tumor Microenvironments,
2014
University at Albany, State University of New York
Expanding Applications Of The Nano Intravital Device As A Platform For Exploring Tumor Microenvironments, Michael Padgen
Legacy Theses & Dissertations (2009 - 2024)
The tumor microenvironment has been demonstrated to be a key determinant in the progression of cancer. Unfortunately, the mechanisms behind the different microenvironments (cytokine gradients, hypoxia, hypoglycemia, etc) have not been fully elucidated. Identifying these mechanisms can lead to targeted, individualized therapy to prevent metastasis. The Nano Intravital Device (NANIVID) is a microfabricated, implantable device designed to initiate specific microenvironments in vivo so that the time course of the effects can be observed. With both spatial and temporal control over the induced environments, the affected regions of the tumor can be compared to the rest of the tumor. The NANIVID …
First-Principles Study Of The Electric Field Effect On The Water-Adsorbed Rutile Titanium Dioxide Surface,
2014
University at Albany, State University of New York
First-Principles Study Of The Electric Field Effect On The Water-Adsorbed Rutile Titanium Dioxide Surface, Abraham L. Hmiel
Legacy Theses & Dissertations (2009 - 2024)
TiO2 is a semiconducting material that has been used extensively in many industrial applications, and recently has become a candidate for photocatalytic water splitting, fuel cell anode support materials, sensors, and other novel nanodevices. The interface of TiO2 with water, historically well-studied but still poorly understood, presents a ubiquitous environmental challenge towards the ultimate practical usefulness of these technologies. Ground-state density functional theory (DFT) calculations studying the characteristics of molecular adsorption on model surfaces have been studied for decades, showing constant improvement in the description of the energetics and electronic structure at interfaces. These simulations are invaluable in the …
Development Of Novel Technologies To Enhance Performance And Reliability Of Iii-Nitride Avalanche Photodiodes,
2014
University at Albany, State University of New York
Development Of Novel Technologies To Enhance Performance And Reliability Of Iii-Nitride Avalanche Photodiodes, Puneet Harischandra Suvarna
Legacy Theses & Dissertations (2009 - 2024)
Solar-blind ultraviolet avalanche photodiodes are an enabling technology for applications in the fields of astronomy, communication, missile warning systems, biological agent detection and particle physics research. Avalanche photodiodes (APDs) are capable of detecting low-intensity light with high quantum efficiency and signal-to-noise ratio without the need for external amplification. The properties of III-N materials (GaN and AlGaN) are promising for UV photodetectors that are highly efficient, radiation-hard and capable of visible-blind or solar-blind operation without the need for external filters. However, the realization of reliable and high performance III-N APDs and imaging arrays has several technological challenges. The high price and …
Growth And Characterization Of Graphene On Cuni Substrates,
2014
University at Albany, State University of New York
Growth And Characterization Of Graphene On Cuni Substrates, Parul Tyagi
Legacy Theses & Dissertations (2009 - 2024)
Graphene is a single layer of sp2 bonded carbon atoms that crystallizes in the honeycomb structure. Because of its true two-dimensional structure, it has very unique electrical properties, including a very high carrier mobility that is symmetric for holes and electrons. To realize these unique properties, it is important to develop a method for growing graphene films with uniform thickness and low defect density. One of the most popular methods of growth is by chemical vapor deposition on Cu substrates, because it is self-limited. However many applications require the growth of graphene films that are more than one atomic layer …
An Implantable Device For Manipulation Of The In Vivo Tumor Microenvironment,
2014
University at Albany, State University of New York
An Implantable Device For Manipulation Of The In Vivo Tumor Microenvironment, James K. Williams
Legacy Theses & Dissertations (2009 - 2024)
In the past decade, it has become increasingly recognized that interactions between cancer cells and the tumor microenvironment (TME) regulate metastasis. One such interaction is the paracrine loop between macrophages and cancer cells which drives metastatic invasion in mammary tumors. Tumor associated macrophages release epidermal growth factor (EGF), a chemoattractant which induces the migration of cancer cells toward the blood vessels. The cancer cells reciprocate by releasing a macrophage chemoattractant, colony-stimulating factor 1 (CSF-1), resulting in the co-migration of both cell types and subsequent intravasation. In this work, a new technology has been developed for studying the mechanisms by which …
The Influence Of Impurities And Metallic Capping Layers On The Microstructure Of Copper Interconnects,
2014
University at Albany, State University of New York
The Influence Of Impurities And Metallic Capping Layers On The Microstructure Of Copper Interconnects, Michael Rizzolo
Legacy Theses & Dissertations (2009 - 2024)
As copper interconnects have scaled to ever smaller dimensions on semiconductor devices, the microstructure has become increasingly detrimental for performance and reliability. Small grains persist in interconnects despite annealing at high temperatures, leading to higher line resistance and more frequent electromigration-induced failures. Conventionally, it was believed that impurities from the electrodeposition pinned grain growth, but limitations in analytical techniques meant the effect was inferred rather than observed.
Characterization Of Extreme Ultraviolet Lithography Photoresists Using Advanced Metrology And Fitting Techniques,
2014
University at Albany, State University of New York
Characterization Of Extreme Ultraviolet Lithography Photoresists Using Advanced Metrology And Fitting Techniques, Genevieve Kane
Legacy Theses & Dissertations (2009 - 2024)
As extreme ultraviolet lithography (EUVL) prepares to be incorporated into high volume manufacturing, many challenges must be addressed. Among these challenges, a need for photoresist improvement exists. The work described here will look into some of the problems and challenges facing EUV resists, in particular out-of-band (OOB) wavelengths of light and their interaction with photoresists. Studies have been completed on the effect of out-of-band light on photoresists [1]-[3]. It is imperative that solutions to suppress the deep ultraviolet (DUV) OOB light be incorporated into next generation EUV production tools due to concerns of decreased performance of lithography, and an increase …
Experimental And Simulation Studies Of Printability Of Buried Euv Mask Defects And Study Of Euv Reflectivity Loss Mechanisms Due To Standard Euv Mask Cleaning Processes,
2014
University at Albany, State University of New York
Experimental And Simulation Studies Of Printability Of Buried Euv Mask Defects And Study Of Euv Reflectivity Loss Mechanisms Due To Standard Euv Mask Cleaning Processes, Mihirkant Upadhyaya
Legacy Theses & Dissertations (2009 - 2024)
There's a big push for development and commercialization of extreme ultraviolet (EUV) lithography for high-volume semiconductor manufacturing of 14 nm half-pitch patterning and beyond. One of the primary concerns for making this a reality has been the ability to achieve defect-free masks. My study is focused on two aspects related to the performance degradation of the EUV masks namely EUV mask cleaning induced reflectivity loss mechanisms, and the buried multilayer phase defects in EUV masks.
Radiation Effects In Gate-All-Around Silicon Nanowire Mosfets And Carbon Nanotube P-N Diodes,
2014
University at Albany, State University of New York
Radiation Effects In Gate-All-Around Silicon Nanowire Mosfets And Carbon Nanotube P-N Diodes, Everett Steven Comfort
Legacy Theses & Dissertations (2009 - 2024)
The scaling of MOSFETs has resulted in short channel effects that increase their power consumption above acceptable levels. In order to lower the power dissipation, new device designs and materials are being considered. For example, multiple-gate MOSFETs, including the gate-all-around silicon nanowire (GAA SiNW) MOSFET, are known to reduce short channel effects. Furthermore, new high-mobility channel materials such as single-walled carbon nanotubes (SWNTs) can be integrated to allow for further scaling of the supply voltage, again aiding in lowering power dissipation.
Development Of A One-Dimensional Position Sensitive Detector For Tracking Applications,
2014
University at Albany, State University of New York
Development Of A One-Dimensional Position Sensitive Detector For Tracking Applications, Leigh Kent Lydecker
Legacy Theses & Dissertations (2009 - 2024)
Optical Position Sensitive Detectors (PSDs) are a non-contact method of tracking the location of a light spot. Silicon-based versions of such sensors are fabricated with standard CMOS processing, are inexpensive and provide a real-time, analog signal output corresponding to the position of the light spot. Because they are non-contact, they do not degrade over time from surface friction due to repetitive sliding motion associated with standard full contact sliding potentiometers. This results in long, reliable device lifetimes. In this work, an innovative PSD was developed to replace the linear hard contact potentiometer currently being used in a human-computer interface architecture.
Exposure Assessment And Risk Management Of Engineered Nanoparticles : Investigation In Semiconductor Wafer Processing,
2014
University at Albany, State University of New York
Exposure Assessment And Risk Management Of Engineered Nanoparticles : Investigation In Semiconductor Wafer Processing, Michele Shepard
Legacy Theses & Dissertations (2009 - 2024)
Engineered nanomaterials (ENMs) are currently used in hundreds of commercial products and industrial processes, with more applications being investigated. Nanomaterials have unique properties that differ from bulk materials. While these properties may enable technological advancements, the potential risks of ENMs to people and the environment are not yet fully understood. Certain low solubility nanoparticles are more toxic than their bulk material, such that existing occupational exposure limits may not be sufficiently protective for workers. Risk assessments are currently challenging due to gaps in data on the numerous emerging materials and applications as well as method uncertainties and limitations.
Biomacromolecule Conjugated Nanofiber Scaffold For Salivary Gland Tissue Engineering,
2014
University at Albany, State University of New York
Biomacromolecule Conjugated Nanofiber Scaffold For Salivary Gland Tissue Engineering, Kavitha Jayarathanam
Legacy Theses & Dissertations (2009 - 2024)
ABSTRACT :
Enhancing The Insulation Of Wide-Range Spectrum In The Pva/N Thin Film By Doping Zno Nanowires,
2014
Old Dominion University
Enhancing The Insulation Of Wide-Range Spectrum In The Pva/N Thin Film By Doping Zno Nanowires, Yu-Chen Lin, Ching-Hsiang Vhen, Liang-Yih Chen, Shih-Chieh Hsu, Shizhi Qian
Mechanical & Aerospace Engineering Faculty Publications
In this study, polyvinyl alcohol/nitrogen (PVA/N) hybrid thin films doped with sharp-sword ZnO nanowires with insulating effect and wide-range spectrum are demonstrated for the first time. PVA/N doped ZnO nanocomposites were developed by blending PVA and N-doped ZnO nanowires in water at room temperature. Measurements from the field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Raman, and photoluminescence emission (PL) spectra of the products show that nitrogen is successfully doped into the ZnO wurtzite crystal lattice. In addition, the refractive index of PVA/N doped ZnO hybrid thin films can be controlled by varying the doped ZnO nanowires under different …
Fluid Dynamic Modeling Of Nano-Thermite Reactions,
2014
The University of Texas Rio Grande Valley
Fluid Dynamic Modeling Of Nano-Thermite Reactions, Karen S. Martirosyan, Maxim Zyskin, Charles M. Jenkins, Yasuyuki Horie
Physics & Astronomy Faculty Publications
This paper presents a direct numerical method based on gas dynamic equations to predict pressure evolution during the discharge of nanoenergetic materials. The direct numerical method provides for modeling reflections of the shock waves from the reactor walls that generates pressure-time fluctuations. The results of gas pressure prediction are consistent with the experimental evidence and estimates based on the self-similar solution. Artificial viscosity provides sufficient smoothing of shock wave discontinuity for the numerical procedure. The direct numerical method is more computationally demanding and flexible than self-similar solution, in particular it allows study of a shock wave in its early stage …
Fabrication Of Yttrium Ferrite Nanoparticles By Solution Combustion Synthesis,
2014
Kazak National Technical University
Fabrication Of Yttrium Ferrite Nanoparticles By Solution Combustion Synthesis, A. A. Saukhimov, Mkhitar A. Hobosyan, Gamage C. Dannangoda, N. N. Zhumabekova, S. E. Kumekov
Physics & Astronomy Faculty Publications
The ternary oxide system Y-Fe-O presents fascinating magnetic properties that are sensitive to the crystalline size of particles. There is a major challenge to fabricate these materials in nano-crystalline forms due to particle conglomeration during nucleation and synthesis. In this paper we report the fabrication of nano sized crystalline yttrium ferrite by solution combustion synthesis (SCS) where yttrium and iron nitrates were used as metal precursors with glycine as a fuel. The magnetic properties of the product can be selectively controlled by adjusting the ratio of glycine to metal nitrates. Yttrium ferrite nano-powder was obtained by using three concentration of …
3d Printing & Open Access Databases For Crystallographic College Education,
2014
Portland State University
3d Printing & Open Access Databases For Crystallographic College Education, Peter Moeck, Jennifer Stone-Sundberg, Trevor J. Snyder, Werner Kaminsky, Saulius Grazulis, International Advisory Board Of The Crystallography Open Database
Physics Faculty Publications and Presentations
Presentation gives an overview of available open access databases of crystals and crystal structures, as well as discussions of how newly developed 3D printing technologies can be used to teach crystallography at the college level. Offers advice regarding conversion of crystallographic information files to 3D printing files, and shares news from the 3D printing of crystallographic models community.
3d Printing Of Crystallographic Models For Interdisciplinary College Education,
2014
Portland State University
3d Printing Of Crystallographic Models For Interdisciplinary College Education, Peter Moeck, Werner Kaminsky, Trevor J. Snyder
Physics Faculty Publications and Presentations
Provides a brief overview of the Crystallography Open Database, and how advances in 3D printing have created opportunities in teaching of college level crystallography courses.
Microfluidic Electrical Sorting Of Particles Based On Shape In A Spiral Microchannel,
2014
Old Dominion University
Microfluidic Electrical Sorting Of Particles Based On Shape In A Spiral Microchannel, John Dubose, Xinyu Lu, Saurin Patel, Shizhi Qian, Sang Woo Joo
Mechanical & Aerospace Engineering Faculty Publications
Shape is an intrinsic marker of cell cycle, an important factor for identifying a bioparticle, and also a useful indicator of cell state for disease diagnostics. Therefore, shape can be a specific marker in label-free particle and cell separation for various chemical and biological applications. We demonstrate in this work a continuous-flow electrical sorting of spherical and peanut-shaped particles of similar volumes in an asymmetric double-spiral microchannel. It exploits curvature-induced dielectrophoresis to focus particles to a tight stream in the first spiral without any sheath flow and subsequently displace them to shape-dependent flow paths in the second spiral without any …
Effect Of Electrospun Nanofibers On The Short Beam Strength Of Laminated Fiberglass Composite,
2014
North Carolina Agricultural and Technical State University
Effect Of Electrospun Nanofibers On The Short Beam Strength Of Laminated Fiberglass Composite, Dattaji K. Shinde
Dissertations
High specific modulus and strength are the most desirable properties for the material used in structural applications. Composite materials exhibit these properties and over the last decade, their usage has increased significantly, particularly in automotive, defense, and aerospace applications. The major cause of failures in composite laminates is due to delaminations. Delamination in composite laminates can occur due to fatigue, low velocity impact and other loadings modes. Conventional methods like “through-the-thickness stitching” or “Z-Pinning” have limitations for improving flexural and interlaminar properties in woven composites due to the fact that while improving interlaminar properties, the presence of stitches or Z …
Fabrication Of Magnetic Two-Dimensional And Three-Dimensional Microstructures For Microfluidics And Microrobotics Applications,
2014
University of Kentucky
Fabrication Of Magnetic Two-Dimensional And Three-Dimensional Microstructures For Microfluidics And Microrobotics Applications, Hui Li
Theses and Dissertations--Mechanical and Aerospace Engineering
Micro-electro-mechanical systems (MEMS) technology has had an increasing impact on industry and our society. A wide range of MEMS devices are used in every aspects of our life, from microaccelerators and microgyroscopes to microscale drug-delivery systems. The increasing complexity of microsystems demands diverse microfabrication methods and actuation strategies to realize. Currently, it is challenging for existing microfabrication methods—particularly 3D microfabrication methods—to integrate multiple materials into the same component. This is a particular challenge for some applications, such as microrobotics and microfluidics, where integration of magnetically-responsive materials would be beneficial, because it enables contact-free actuation. In addition, most existing microfabrication methods …
