Tags: simulation and modeling

All Categories (61-80 of 96)

  1. Modeling the quantum dot growth in the continuum approximation

    12 Jan 2011 | | Contributor(s):: Peter Cendula

    Quantum dots can grow spontaneously during molecular beam epitaxy oftwo materials with different lattice parameters, Stranski-Krastanow growth mode.We study a mathematical model based on the continuum approximation of thegrowing layer in two dimensions. Nonlinear evolution equation is solved...

  2. Nov 15 2010

    2010 Joint NNIN/C & NCN Fall Workshop: Building a Collaborative Framework for Nanoscale Simulations

    Nanoscience relies on intensive atomistic simulations that generate copious amounts of data. Since various ab-initio and empirical approaches exist in the field, there is a growing need to develop...

    http://nanohub.org/events/details/273

  3. Oct 31 2010

    2010 Joint NNIN/C & NCN Fall Workshop: Registration Deadline

    Nanoscience relies on intensive atomistic simulations that generate copious amounts of data. Since various ab-initio and empirical approaches exist in the field, there is a growing need to develop...

    http://nanohub.org/events/details/274

  4. Karim Elgammal

    I am a PhD student at the Royal Institute of Technology ()

    http://nanohub.org/members/47839

  5. Does nanoHUB’s online tools system support python modules outside Rappture? (Particulary SciPy/NumPy)

    Open | Responses: 1

    I’m in the process of developing a tool in Python and I’m thinking of moving the project on to nanoHUB with Rappture, but my current code makes extensive use of http://nanohub.org/answers/question/602

  6. Solar Cells Operation and Modeling

    19 Jul 2010 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck

    This set of slides decribes the basic principles of operation of various generations on solar cells with emphasis to single crystalline solar cells. Next, semiconductor equations that describe the operation of a solar cell under simplified conditions is given. Finally, modeling of single...

  7. Ripples and Warping of Graphene: A Theoretical Study

    08 Jun 2010 | | Contributor(s):: Umesh V. Waghmare

    We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked with a low energy branch of phonons that exhibits quadratic dispersion at long wave-lengths. Many...

  8. Sebastian Lee

    Sebastian Lee is an undergraduate student majoring in Industrial Engineering at Purdue University with a Specialization in Software Engineering. He is anticipated to graduate in May 2012 and plans...

    http://nanohub.org/members/44565

  9. Computer in Science Engineering: featuring nanoHUB.org

    22 Apr 2010 |

    The current issue of Computing in Science and Engineering focuses on cyber-enabled nanotechnology, and nanoHUB.org is featured extensively throughout.

  10. Carbon nanotube bandstructure

    22 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    Carbon nanotubes are allotropes of carbon with a cylindrical nanostructure, and can be categorized into single-walled nanotubes (SWNT) and multi-walled nanotubes (MWNT). These cylindrical carbon molecules have novel properties that make them potentially useful in many nanotechnology...

  11. Threshold voltage in a nanowire MOSFET

    22 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, SungGeun Kim, Gerhard Klimeck

    Threshold voltage in a metal oxide semiconductor field-effect transistor (better known as a MOSFET) is usually defined as the gate voltage at which an inversion layer forms at the interface between the insulating layer (oxide) and the substrate (body) of the transistor. A MOSFET is said to be...

  12. Resonant Tunneling Diode operation

    22 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    A resonant tunneling diode (RTD) is a type of diode with a resonant tunneling structure that allows electrons to tunnel through various resonant states at certain energy levels. RTDs can be fabricated using many different types of materials (such as III-V, type IV, II-VI semiconductors) and...

  13. Nanotechnology Animation Gallery

    22 Apr 2010 | | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    Animations and visualization are generated with various nanoHUB.org tools to enable insight into nanotechnology and nanoscience. Click on image for detailed description and larger image download. Additional animations are also available Featured nanoHUB tools: Band Structure Lab. Carrier...

  14. Comb Drive Levitation

    19 Jan 2010 | | Contributor(s):: Fengyuan (Thomas) Li, jason clark

    Model comb drive levitation effect with Schwarz-Christoffel based algorithm

  15. Semiconductor Device Theory Exercises

    30 Jul 2008 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck, Mark Lundstrom

    This collection of problems should help the students to better understand Semiconductor Device Physics on a fundamental and more complex level. Crystal lattices and Miller indiciesFrom 1 well to 2 wells to 5 wells to periodic potentialsPeriodic potentials and bandstructureBandstructure...

  16. Learning Module: Atomic Picture of Plastic Deformation in Metals

    The main goal of this learning module is to introduce students to the atomic-level processes responsible for plastic deformation in crystalline metals and help them develop a more intuitive...

    http://nanohub.org/wiki/LearningModulePlasticityMD

  17. Nanoelectronic Modeling Lecture 22: NEMO1D - Motivation, History and Key Insights

    05 Feb 2010 | | Contributor(s):: Gerhard Klimeck

    The primary objective of the NEMO-1D tool was the quantitative modeling of high performance Resonant Tunneling Diodes (RTDs). The software tool was intended for Engineers (concepts, fast turn-around, interactive) and Scientists (detailed device anaysis). Therefore various degrees of...

  18. Nanoelectronic Modeling Lecture 03: nanoHUB.org - Online Simulation and More

    30 Dec 2009 | | Contributor(s):: Gerhard Klimeck

    This presentation provides a brief overview of the nanoHUB capabilites, compares it to static web page delivery, highlights its technology basis, and provides a vision for future cyberinfrastructures in a system of federated HUBs powered by the HUBzero.org infrastructure.

  19. Nanoelectronic Modeling Lecture 02: (NEMO) Motivation and Background

    30 Dec 2009 | | Contributor(s):: Gerhard Klimeck, Dragica Vasileska

    Fundamental device modeling on the nanometer scale must include effect of open systems, high bias, and an atomistic basis. The non-equilibrium Green Function Formalism (NEGF) can include all these components in a fundamentally sound approach and has been the basis for a few novel device...

  20. Does anybody know how to submit LAMMPS jobs on nanoHub?

    Closed | Responses: 0

    The submission file is

    #PBS -l nodes=1:ppn=1
    #PBS -l walltime=10:00:00
    #PBS -q martinia #PBS -N tip4rot30
    cd $PBS_O_WORKDIR module load lammps lmp < in.tip4 http://nanohub.org/answers/question/425