nanoHUB.org: online simulations and more

Latest Questions

• + 20  

  intraband transitions- quantum dot lab

  Regarding the Quantum dot lab,I have a question. I want to put the simulations in my thesis, so i must be sure that my understanding is correct. The software is using a single band model.So that ...

  Asked by Neelanjan Bhattacharya - 1 week ago    0  0  

  Tags:

  1. intraband transitions- quantum dot lab
   

• + 5  

  nanowire simulation quantum dot lab

  Dear Sir, Is it possible to simulate optical properties of a quantum wire in quantum dot lab? We made GaAs quantum wires of 15nm radius, but in "quantum dot lab", we can modify a sphere in to a ...

  Asked by Neelanjan Bhattacharya - 2 weeks ago    1  0  

  Tags:

  1. nanowire simulation quantum dot lab
   

• + 5  

  bandgap in quantum dot lab

  The quantum dot lab has an option to insert the effective mass to help select a user defined material. To make it more effective, could you please also include the bandgap and dielectric constant as ...

  Asked by Neelanjan Bhattacharya - 3 weeks ago    0  0  

  Tags:

  1. bandgap in quantum dot lab
   

• + 10  

  Si and GaAs structure appear to be on different scales or different origins.

  It is hard to compare the two materials as the origin is shifted out of the field of view. Can get this get fixed?

  Asked by Anonymous - 3 weeks ago    0  0  

  Tags:

  1. tool:crystal_viewer
   

• + 10  

  graphene unit cell representation shows very small atoms

  when the graphene material system is displayed as a unit cell the carbon atoms are really small. In the diamond lattice or the bucky ball that is not the case. Can this get so the atoms are more ...

  Asked by Anonymous - 3 weeks ago    1  0  

  Tags:

  1. tool:crystal_viewer
   

• + 5  

  code posts error message for negative threshold voltages

  If I choose a carbon nanotube and a negative threshold voltage the code stops with an error message "mrdivide" or something like this.

  Asked by Gerhard Klimeck - 2 months ago    0  0  

  Tags:

  1. tool:fettoy
   

• + 5  

  please plot a sweep of Vgs

  I am ramping the gate-source voltage, but only one plot appears a plot as a function of Vds. Can a new plot be added, please? In fact the citation below does exactly perform this. But they must ...

  Asked by Gerhard Klimeck - 2 months ago    1  0  

  Tags:

  1. tool:sbcnfet
   

• How do I interpret CV measurements of self-assembled quantum dot stacks?

  I've been reading papers where CV measurements of stacks of self-assembled quantum dots are used to characterise the energy levels in the dots. I am at a loss to interpret the plots. For example, if ...

  Asked by Shreyas Shah - 15 hours ago    0  0  

  Tags:

  1. capacitance-voltage
  2. quantum dots
   

• Highly non-spherical heavy hole bands for bulk GaAs??

  I calculated the band structure of bulk GaAs. The effective masses for the heavy holes were given as: [100] 0.376848 [110] 0.657788 [111] 0.839029 I thought the heavy hole bands of GaAs ...

  Asked by Anonymous - 1 day ago    0  0  

  Tags:

  1. tool:bandstrlab
   

• What is the dimension of the electrode?

  In the calculation of the CNT catilever, the electrode's dimension is also very important factor. So, what is the assumption of the electrode dimension in CNTNEMSCANT tool.

  Asked by Sansiri Tanachutiwat - 1 week ago    0  0  

  Tags:

  1. tool:CNTNEMSCANT
   

• is the Nano Tube diameter changeable in moscnt.1.0 software?

  Asked by rezaei - 1 week ago    0  0  

  Tags:

  1. moscnt.1.0
   

• Negative voltages for Fettoy

  Hi, i am simulating for negative gate voltages, but i find that i have not been able to do so and i get back an error "mrdivide". does that mean the tool cant simulate for -VG or is there a fix to ...

  Asked by Harish Narendar - 1 week ago    0  0  

  Tags:

  1. tool:fettoy
   

• Negative gate voltages

  Hi there, I am trying to simulate Nanowire MOSFET in a depletion mode. so i would need to have negative gate voltages. But as far as i can see, the simulator doesnt let me simulate for negative ...

  Asked by Harish Narendar - 1 week ago    0  0  

  Tags:

  1. fettoy
   

• What dose it exactly mean by MTP's ?

  Please can any one explaine me the basic concepts of Mulitply Twinned Particles

  Asked by Nimrodh Ananth. A - 1 week ago    0  0  

  Tags:

  1. Multiply Twinned Particles (MTP's)
   

• source/drain and gate lenght in fettoy software

  what are the source/drain and gate lenghts in fettoy software for cntmosfet simulation?

  Asked by Abbas Rezaei - 1 week ago    1  0  

  Tags:

  1. fettoy
   

• how do i minimise radiation losses

  Asked by pratheek g hegde - 2 weeks ago    0  0  

  Tags:

  1. thermoelectronics
   

• Yes please give more citations

  Asked by Anonymous - 2 weeks ago    0  0  

  Tags:

  1. tool:devrel
   

• moscnt.1.0 parameters range

  What is the defined ranges for these parameters in moscnt.1.0 software? Lsd (Source/Drain Lenght) Lg (Gate Electrode Lenght) t_in (Oxide Thickness) Vg0 (Gate Contact Bias) Vd0 (Drain Contact ...

  Asked by Abbas Rezaei - 2 weeks ago    0  0  

  Tags:

  1. moscnt.1.0
   

• moscnt.1.0 NanoTube diameter

  Dear Sir How much is the Nano Tube diameter that has been used in moscnt.1.0 software? Best Regards

  Asked by Abbas Rezaei - 2 weeks ago    0  0  

  Tags:

  1. moscnt.1.0
   

• Answered

  abinit MPI doesnot work

  it seems that the abinit MPI does not work. it says that" abinip does not exsist "

  Asked by Anonymous - 2 weeks ago    2  0  

  Tags:

  1. tool:ABINIT