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What's the HUBbub? - Panel Discussion
31 Jan 2011 | | Contributor(s):: Michael McLennan, Mark Lundstrom, Rudi Eigenmann
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Quantum Dot Wave Function (still image)
31 Jan 2011 | | Contributor(s):: Gerhard Klimeck, David S. Ebert, Wei Qiao
Electron density of an artificial atom. The image shown displays the excited electron state in an Indium Arsenide (InAs) / Gallium Arsenide (GaAs) self-assembled quantum dot.
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Self-Assembled Quantum Dot Wave Structure
31 Jan 2011 | | Contributor(s):: Gerhard Klimeck, Insoo Woo, Muhammad Usman, David S. Ebert
A 20nm wide and 5nm high dome shaped InAs quantum dot grown on GaAs and embedded in InAlAs is visualized.
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Electron Density in a Nanowire
30 Jan 2011 | | Contributor(s):: Gerhard Klimeck, Saumitra Raj Mehrotra
Electron Density in a circular Silicon nanowire transistor.
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Tunneling in an Nanometer-Scaled Transistor
25 Jan 2011 | | Contributor(s):: Gerhard Klimeck, Mathieu Luisier, Neerav Kharche, George A. Howlett, Insoo Woo, David Ebert
Electrons tunneling through the gate of an ultra-scaled transistor.
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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...
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A methodology for SPICE-compatible modeling of nanoMOSFETs
17 Nov 2010 | | Contributor(s):: Alba Graciela Avila, David Espejo
An original SPICE-compatible model for Intel's 45nm High-K MOSFET is presented. It takes into account some Quantum-Mechanical Effects that occur at small scale like Channel Length Modulation (CLM), Threshold Voltage variation and Velocity saturation, and is the first in his class that is not...
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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...
https://nanohub.org/events/details/273
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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...
https://nanohub.org/events/details/274
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Karim Elgammal
I am a PhD student at the Royal Institute of Technology ()
https://nanohub.org/members/47839
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Does nanoHUB’s online tools system support python modules outside Rappture? (Particulary SciPy/NumPy)
Q&A|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 https://nanohub.org/answers/question/602
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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 junction...
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Exercise for MOSFET Lab: Device Scaling
28 Jun 2010 | | Contributor(s):: Dragica Vasileska, Gerhard Klimeck
This exercise explores device scaling and how well devices are designed.
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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...
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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...
https://nanohub.org/members/44565
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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.
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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 applications,...
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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...
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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...
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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...