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Nano@Tech Lecture Series

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https://hdl.handle.net/1853/70938
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Now showing 1 - 4 of 4
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    Nano-Enabled Drug Delivery: Exploring Cancer Treatment Opportunities
    (Georgia Institute of Technology, 2014-09-23) Porter, Alan L. ; Ma, Jing
    We compile large sets of nano-related article and patent abstracts. We then analyze these records to learn about changing research emphases to try to project likely future developmental pathways. In this seminar we will focus on Nano-Enabled Drug Delivery (NEDD), considering key emerging topics over time. We will then focus on NEDD being used to treat cancers. We key on 3 dimensions: 1) Which nano components are being researched, 2) To facilitate delivery of which agents (drugs), 3) To treat which cancers. A key aim is to identify R&D opportunities that have not been well-explored yet.
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    Formation and Growth Mechanisms of Single-Walled Metal Oxide Nanotubes
    (Georgia Institute of Technology, 2012-04-23) Yucelen, Gulfem Ipek
    Metal oxide nanotubes have emerged as an important class of ‘building block’ materials for molecular recognition-based applications in catalysis, separations, sensing, and molecular encapsulation due to their well-defined wall structure and porosity, tunable dimensions, and chemically modifiable interior and exterior surfaces. However, their widespread application will depend on the development of synthesis processes that can yield structurally and compositionally well-controlled nanotubes. To this end, we have investigated the mechanisms of formation and growth of single-walled metal oxide nanotubes at multiple length scales, from the molecular scale to the micron-scale. We show how a wide range of quantitative and qualitative information regarding nanotube formation and growth can be obtained by nuclear magnetic resonance (NMR) spectroscopy, electrospray ionization (ESI) mass spectrometry, transmission electron microscopy (TEM), and solvated density functional theory (DFT) calculations. Integration of all this information leads to the construction of the first ‘design rules’ of single-walled metal oxide nanotube formation and growth.
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    Subtractive Etching of Cu with Hydrogen-Based Plasmas
    (Georgia Institute of Technology, 2011-02-22) Levitin, Galit
    Beginning at the 130 nm node, copper (Cu) interconnection layers were introduced to replace conventional Al layers in order to reduce the wiring resistance in logic devices. Due to the inability to form volatile etch products at temperatures less than 180 °C, the damascene process has been the prevailing patterning technology for Cu. Continuous device scaling introduces additional challenges to the currently used damascene process. For example, the “size effect” of Cu is a phenomenon in which the electrical resistivity of Cu increases rapidly as lateral dimensions are reduced below 100 nm. This limitation could be overcome in part by the use of copper films with larger grain size. Although this change could be implemented by annealing sputtered or evaporated Cu films, this approach to film pattering requires a plasma etch step which has not been feasible to date. In this presentation we discuss a simple, hydrogen (H2) plasma-based, low temperature etch process that was developed to allow an alternative method to Cu damascene technology. The effect of various gases and plasma conditions on the etch anisotropy were studied and the combined effects of ion bombardment, ultraviolet photon impingement, and H interaction with Cu surfaces appears to be responsible for the efficient removal of Cu in low temperature H2-based plasma environments.
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    Halogen-Free, UV-Curable High Refractive Index Materials for Light Management
    (Georgia Institute of Technology, 2010-10-12) Idacavage, Mike J.
    High refractive index (RI) materials, especially radiation curable high RI materials, have been used for light management in a wide variety of optical, photovoltaic, photonic and electronic applications. Recently, there have been fast growing demands for new materials with even higher RI, and better performance while also being halogen-free due to increasing environmental concerns. Achieving equivalent RI without the use of halogenated materials is a big challenge. Cytec has developed a series of halogen-free, UV-curable high refractive index materials including inorganic-organic hybrid Nanocomposite containing aromatic urethane (meth) acrylate oligomers. These materials have refractive indices in the range of nD20 = 1.58 – 1.65 (liquid) and good optical transparence, making them ideal for display and photovoltaic applications.