-
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.
-
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,...
-
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...
-
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...
-
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...
-
The Transparency Paradox: Computational Simulations as Learning Tools for Engineering Graduate Education
08 Apr 2010 | | Contributor(s):: Alejandra J. Magana, Sean Brophy,
Computational simulations have become a critical part of computational science, which is being described as the third leg in this century’s methodologies of science. Computational simulations have also become a critical element of learning experiences as they can provide engineering students with...
-
Are Simulation Tools Developed and Used by Experts Appropriate Experimentation Tools for Educational Contexts?
08 Apr 2010 | | Contributor(s):: Alejandra J. Magana, Sean Brophy,
Simulations and visualizations can lead to significant improvements in students'conceptual understanding. This increased understanding may be due to the formation of expert-like dynamic mental models. Laboratory simulations have been used in educational contexts forinquiry learning by allowing...
-
Professors' Instructional Approaches and Students' Perceptions of nanoHUB Simulations as Learning Tools.
08 Apr 2010 | | Contributor(s):: Alejandra J. Magana, Sean Brophy,
Simulations can provide a critical element of learning experiences. Simulations are alsobecoming a critical part of computational science, which is being described as the thirdlegin this century's methodologies of science (Sabelli, et. al, 2005). Opportunities existto use the same simulation as...
-
Professor's and Student's Perceptions and Experiences of Computational Simulations as Learning Tools
04 Apr 2010 | | Contributor(s):: Alejandra J. Magana
Computational simulations are becoming a critical component of scientific and engineering research, and now are becoming an important component for learning. This dissertation provides findings from a multifaceted research study exploring the ways computational simulations have been perceived and...
-
Nanoelectronic Modeling Lecture 26: NEMO1D -
09 Mar 2010 | | Contributor(s):: Gerhard Klimeck
NEMO1D demonstrated the first industrial strength implementation of NEGF into a simulator that quantitatively simulated resonant tunneling diodes. The development of efficient algorithms that simulate scattering from polar optical phonons, acoustic phonons, alloy disorder, and interface roughness...
-
Nanoelectronic Modeling Lecture 22: NEMO1D - Motivation, History and Key Insights
07 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...
-
Nanoelectronic Modeling Lecture 03: nanoHUB.org - Online Simulation and More
25 Jan 2010 | | 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.
-
Nanoelectronic Modeling Lecture 02: (NEMO) Motivation and Background
25 Jan 2010 | | 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...
-
N-N junction
Q&A|Closed | Responses: 0
I am trying to simulate N-N junction the first with Nd=1018 and the second with Nd=1014.the doping graph has problem, the doping was 10^18 within the first region and was zero within...
https://nanohub.org/answers/question/428
-
ECE 656 Lecture 31: Monte Carlo Simulation
01 Dec 2009 | | Contributor(s):: Mark Lundstrom
Outline:IntroductionReview of carrier scatteringSimulating carrier trajectoriesFree flightCollisionUpdate after collisionPutting it all togetherSummary
-
ECE 656 Lecture 30: Balance Equation Approach III
01 Dec 2009 | | Contributor(s):: Mark Lundstrom
OutlineCarrier Temperature and Heat FluxBalance equations in 3DHeterostructuresSummary
-
MIT Tools for Energy Conversion and Storage
13 Sep 2009 | | Contributor(s):: Jeffrey C Grossman, Joo-Hyoung Lee, Varadharajan Srinivasan, Alexander S McLeod, Lucas Wagner
Atomic-Scale Simulation Tools to Explore Energy Conversion and Storage Materials
-
Lecture 5: NEGF Simulation of Graphene Nanodevices
21 Sep 2009 | | Contributor(s):: Supriyo Datta
-
From Semi-Classical to Quantum Transport Modeling: Particle-Based Device Simulations
09 Aug 2009 | | Contributor(s):: Dragica Vasileska
This set of powerpoint slides series provides insight on what are the tools available for modeling devices that behave either classically or quantum-mechanically. An in-depth description is provided to the approaches with emphasis on the advantages and disadvantages of each approach. Conclusions...
-
Could VEDA gives a animation of the movement of the all cantilever?
Q&A|Closed | Responses: 0
VEDA gives the equation of the movement of the end of the cantilever y(xL,t) (where xL is the lentght of the cantilever). Could it be possible to have an animation (that the user could download)...
https://nanohub.org/answers/question/328