Tags: undergraduate research

Online Presentations (1-20 of 24)

  1. Modelling of Phase Transforming Cellular Material (PXCM)

    28 Aug 2017 | | Contributor(s):: Chidubem Nuela Enebechi, Yunlan Zhang, David Restrepo Arango, Pablo Daniel Zavattieri, Nilesh Mankame

    Phase transforming cellular materials (PXCMs) are a new class of materials that can go through large deformation and return to their original configuration. Currently, there are reliable cellular materials that can resist large deformation, for example, honey comb; however, when these materials...

  2. Electronic and Thermoelectric Characterization of Materials from Ab Initio Calculations

    15 Aug 2017 | | Contributor(s):: Gustavo Javier, David M Guzman, Austin Jacob Zadoks, Alejandro Strachan

    We present the Optimized Workflow for Electronic and Thermoelectric Properties (OWETP) python notebook, which uses Density Functional Theory (DFT) as implemented in the Quantum Espresso code for electronic properties of materials. The OWETP python notebook also enables connecting to the...

  3. Microstructure Evolution During Compaction of Powder Blends

    07 Aug 2017 | | Contributor(s):: Ayush Giri

    Powder Compaction is a manufacturing technology which is used to mold granular particles to solid materials. Powder compaction is widely used by pharmaceutical companies to manufacture tablets with desired properties. It is imperative to understand the mechanics underneath the constituent...

  4. Understanding the Role of Fabrication Method on Metal Alloys Used in Nuclear Power Plants

    07 Aug 2017 | | Contributor(s):: Esteban Bautista, Alexander Bullens, Janelle P Wharry

    Current nuclear reactor components consist of forged or casted Iron-based or Nickel-based alloys.  Both these fabrication techniques present challenges in long-term performance and structural integrity. A possible alternative investigated in this research includes Powder Metallurgy (PM)...

  5. Structure-Force Field Generator for Molecular Dynamics Simulations

    07 Aug 2017 | | Contributor(s):: Carlos Miguel Patiño, Lorena Alzate-Vargas, Alejandro Strachan

    Atomistic and molecular simulations have become an important research field due to the progress made in computer performance and the necessity of new and improved materials. Despite this, first principle simulations of large molecules are still not possible because the high computational time...

  6. Efficient Exploration of Quantified Uncertainty in Granular Crystals

    16 Mar 2016 | | Contributor(s):: Juan Camilo Lopez

    This work presents a way of quantifying uncertainty in granular crystals in a computationally efficient way. To accomplish this, a low dimensional response surface is approximated through the method of active subspaces. Within this framework, special structure within the inputs is exploited to...

  7. Nanomechanics Simulation Tool: Dislocations Make or Break Materials

    16 Mar 2016 | | Contributor(s):: Michael N Sakano

    The goal of computational material science is to improve existing materials and design new ones through mathematical calculations. In particular, molecular dynamic simulations can allow for visualization of dislocations in a material, along with its resulting behavior when under stress. For...

  8. Carbon Nanotube Mission

    02 Aug 2007 | | Contributor(s):: Adaku Ochia

    Carbon nanotubes have become an interesting phenomenon over the past couple of years as electrical devices and electro-mechanical systems have dramatically shrunk in size. Accidentally discovered by Sumio Iijima while he examined carbon fullerenes, these needle like structures, he later named...

  9. Introduction to Self-Assembled Monolayers and Biosensors

    01 Aug 2007 | | Contributor(s):: Michael Toole

    Recent research concerning self-assembled monolayers (SAMs) focuses on tasks from fabrication of microelectronics to creating biosensors. This presentation will address the fundamental principles of self-assembled monolayers, formation and analysis of self-assembled monolayers, the basics of...

  10. Oligodeoxyribonucleotide Association with Single-Walled Carbon Nanotubes

    02 Aug 2007 | | Contributor(s):: Jennifer McDonald

    Commercially available single-walled carbon nanotubes (SWCNTs) tend to aggregate as ropes and bundles during production making them of little use in many scientific and industrial applications. An effective technique for dispersing and solubilizing SWCNTs is required to fully utilize their...

  11. Re-engineering a Healthy Eye Tissue to Restore Damaged Eyesight

    02 Aug 2007 | | Contributor(s):: Margarita Shalaev

    Age-related macular degeneration (AMD) is an eye disease that is the leading cause of blindness in the USA and Western Europe. It affects over one million people in the United States alone. One of the symptoms of AMD is a diseased Bruch’s membrane, which is an important layer in the eye. Our...

  12. Direct Microcontact Printing of Gold and Silver on Silicon

    02 Aug 2007 | | Contributor(s):: Jamie Nipple

    Because microcontact printing (µCP) allows the fabrication of disposable electronic devices with minimum cost, this technique has proven useful in the patterned functionalization of certain chemicals onto surfaces. In time, µCP should allow for the fabrication of sub-10-nanometer structures and...

  13. Biosensing applications of Plasmon Resonance in gold nanoparticles

    02 Aug 2007 | | Contributor(s):: Karina Moore

    Light can be used to excite plasmon resonance in gold nanoparticles. Plasmon resonance occurs on the nanoscale as the particles become excited and plasmon oscillations arise in each particle of a pair of metal nanoparticles. There is plasmon coupling between the neighboring particles as the...

  14. The Effect of Physical Geometry on the Frequency Response of Carbon Nanotube Field-Effect Transistors

    03 Aug 2007 | | Contributor(s):: Dave Lyzenga

    In order for carbon nanotube (CNT) electrical devices to be fabricated, it is necessary to obtain modifiable operation characteristics. Developing parametric equations to achieve this controllability in the vertical field-effect transistor (FET) design is an important first step toward...

  15. Pulsed Laser Deposition of Thin Films

    02 Aug 2007 | | Contributor(s):: Josh Kaufman

    Thin metal films have many applications from optical limiters to nanocircuits. Methods for fabricating these films differ in theory and complexity. Pulsed Laser Deposition (PLD) is a popular method for fabricating thin films. A number of thin films were fabricated using PLD. Silver films of...

  16. Characterization of Colloids Using the BET method and X-ray Scattering

    03 Aug 2006 | | Contributor(s)::

    Colloids are promising materials for a wide range of applications such as selective separations, catalytic processing, and enhanced chemical activity. However, these applications are limited without proper knowledge of colloidal bulk properties. Therefore, the characterization of colloids is...

  17. Three-Dimensional Simulations of Field Effect Sensors for DNA Detection

    03 Aug 2006 | | Contributor(s):: Eddie Howell, Gerhard Klimeck

    Here, the development of a DNA field-effect transistor (DNAFET) simulator is described. In DNAFETs the gate structure of a silicon on insulator (SOI) field-effect transistor is replaced by a layer of immobilized single-stranded DNA molecules which act as surface probe molecules. When...

  18. Investigation of the Electrical Characteristics of Triple-Gate FinFETs and Silicon-Nanowire FETs

    08 Aug 2006 | | Contributor(s):: Monica Taba, Gerhard Klimeck

    Electrical characteristics of various Fin field-effect transistors (FinFETs) and silicon-nanowires were analyzed and compared using a modified three-dimensional self-consistent quantum-mechanical simulator in order to investigate device performance. FinFETs have been proposed to fulfill the...

  19. Chemical Modification of GaAs with TAT Peptide and Alkylthiol Self-Assembled Monolayers

    03 Aug 2006 | | Contributor(s):: Hamsa Jaganathan

    The use of self-assembled monolayers (SAM) on semiconductors creates a basis for the design and creation of bioelectronics, such as biosensors. The interface between the surface and an organic monolayer can change significant electrical and physiochemical properties of a biological device....

  20. Technique for High Spatial Resolution, Focused Electrical Stimulation for Electrically Excitable Tissue

    08 Aug 2006 | | Contributor(s):: Matteo Mannino

    Cochlear implant devices have made use of electrode pulses as a method of nerve fiber stimulation since their early conception. Electrode stimulation is limiting in both quality and consistency, and a new method is required if significant improvements to implant devices are to be made. By using...