Nano@Tech Lecture Series

Series

Nano@Tech Lecture Series

Permanent Link

https://hdl.handle.net/1853/70938

Series Type

Event Series

Associated Organization(s)

Organizational Unit

Institute for Electronics and Nanotechnology (IEN)

Full item page

Publication Search Results

Now showing 1 - 10 of 12

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.
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.
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.
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.
Nanopantography: A Method for Parallel Writing of Etched and Deposited Nanopatterns

(Georgia Institute of Technology, 2009-10-19) Donnelly, Vincent M.

Nanopantography is a radically different approach for parallel writing of pre-selected nanopatterns over large areas. Arrays of micro-electrostatic lenses (e.g., small round holes through a metal/insulator structure) on a substrate such as a silicon wafer focus ion beamlets at the bottoms of the holes. When the wafer is tilted, the focal points in each hole are laterally displaced, allowing the focused beamlets to be rastered across the hole bottoms and write patterns in a massively parallel manner. Examples will be given of Si nanoetching and Ni nanodot deposition.
Nanotechnology and Its Impact on Construction

(Georgia Institute of Technology, 2009-01-27) Teizer, Jochen

This presentation will review nanotechnology programs and summarize the existing knowledge and understanding of nanotechnology, explore existing nanotechnology ideas, needs, and products in various industry fields, learn from their history and experiences during product implementation, and quantify their potential value and implementation for construction. Benefits and limitations of selected nanotechnology applications will be evaluated for high impact potential in construction.
Silicon-Based Resonant Microsensors

(Georgia Institute of Technology, 2008-10-21) Brand, Oliver

The presentation gives an introduction to resonant microsensors providing a frequency output signal. These sensors generally benefit from an excellent frequency resolution, which is ideally limited only by the length of the counting period and the short-term frequency stability of the microstructure's resonance frequency. Device-level and system-level approaches to generate a measurand-dependent frequency signal are discussed and concepts to improve Q-factor, short-term frequency stability and ultimately sensor resolution are highlighted. Furthermore, the presentation discusses frequency drift challenges and introduces methods for drift compensation. The above concepts and approaches are illustrated using two resonant microsensor examples: (i) a mass-sensitive microsensor platform for gas- and liquid-phase chemical sensing based on disktype silicon microstructures and (ii) a cantilever-based resonant magnetic microsensor with a resolution suitable for Earth field applications.
State-Level Nanotechnology Policy Initiatives and Implications for Georgia

(Georgia Institute of Technology, 2008-09-23) McKeon, Patrick Edward Timothy

Nanotechnology has been proposed to hold the next industrial revolution. This interest has been incorporated into increases in research activities, commercialization efforts, and further economic development. The National Nanotechnology Initiative has provided a foundation and scope for these activities from a policy perspective. In addition to national efforts there have been local, state, and regional initiatives to bolster and supplement the national policies. This study looks into the factors driving the policies, the policy actions at the state-level, and the results of these policies. The work analyzes eighteen states and their policies were characterized into a system of developed formal models. There was additional focus given to the nano-specific assets in Georgia, and the potential plans to be implemented at the state-level to enhance its nanotechnology prominence as the new state-funded Nanotechnology Research Center comes on-line. This work was supported by the Program in Science, Technology, and Innovation Policy through the School of Public Policy and the Enterprise Innovation Institute at the Georgia Institute of Technology.
High-Performance Chip-to-Chip Communications Using Advanced Materials and Structures

(Georgia Institute of Technology, 2008-09-09) Kohl, Paul A. ; Spencer, Todd ; Osborn, Tyler

The "off-chip" bandwidth is a major bottleneck causing system delays and limited throughput, especially in areas such as processor-to-memory bandwidth and processor-to-network. The ITRS cites off-chip signal bandwidth exceeding 60 GHz within 10 years. Organic substrates (i.e. chip packages or interposers) with flip-chip solder connections are the core of the first and second level of interconnect. Off-chip bandwidth is limited to several GHz due to frequency dependent attenuation, signal reflections, and crosstalk within the polymer dielectric, via structures, and I/O signal path transitions within the chip substrate and mother board. In this work, we have introduced advances in off-chip interconnect using air-isolated, coaxial links on substrates and boards to demonstrate ultra high-speed chip-to-chip and chip-to-network communications. New approaches have been found to fabricating high frequency I/O, air-and isolated coaxial links on the substrate. The materials, processes and electrical characteristics will be presented.
Development of Implantable Wireless Pressure Sensors for Chronic Disease Management

(Georgia Institute of Technology, 2008-05-13) Fonseca, Michael Agapito

CardioMEMS is a medical device company that has developed and is commercializing a proprietary wireless sensing and communication technology for the human body. Our technology platform is designed to improve the management of severe chronic cardiovascular diseases such as heart failure and aneurysms. Our miniature wireless sensors can be implanted using minimally invasive techniques and transmit cardiac output, blood pressure and heart rate data that are critical to the management of patients. Due to their small size, durability, and lack of wires and batteries, our sensors are designed to be permanently implanted into the cardiovascular system. Using radiofrequency (RF) energy, our sensors can transmit real-time data to an external electronics module, which then communicates this information to the patient’s physician.