Questions & Answers (1-20 of 33)

1. In what order should I input multiple dielectric materials?

   Q&A|Open | Responses: 1

   When using the Concentric Ellipsoids function and 2 different dielectric materials (for the 2 layers), does "Composition 1" refer to the composition of the inner ellipsoid or the outer...

   https://nanohub.org/answers/question/2365

2. how to mix two different shapes of particles to obtain extinction spectrum?

   Q&A|Open | Responses: 1

   i am trying to mix two or more different shapes and size of particles, and want to see the effect on extinction coefficient ? is it possible ? how to do it?

   https://nanohub.org/answers/question/2300

3. Program fails

   Q&A|Open | Responses: 1

   We were able to get the program to work when we used gold as the metal but when we inputted our own complex refractive index, the program fails.

   The error is "not enough time or...

   https://nanohub.org/answers/question/2259

4. custom refractive index, nm or um?

   Q&A|Open | Responses: 1

   Dear Sir or madam,

   I'm using the option of include my own refractive index data (in .txt format) but I have one question, the wavelength data should be in micrometers or...

   https://nanohub.org/answers/question/2258

5. Unable to get near field E calculations

   Q&A|Closed | Responses: 0

   I am getting a "valuerror: cannot convert string to float" error when trying to find the nearfield. 

   https://nanohub.org/answers/question/2230

6. different aspect ratio gold rods showing almost same extiction in simulation

   Q&A|Closed | Responses: 1

   I have tried to simulate gold rods with length 578,641 and 735 nm and diameter 85 nm for all. but I got almost same extinction spectrum for all three cases. but as per literature it should not...

   https://nanohub.org/answers/question/2112

7. How to calculate the cross section of a ellipsoid with efficiency factor?

   Q&A|Closed | Responses: 1

   https://nanohub.org/answers/question/2109

8. Value Error Message?

   Q&A|Closed | Responses: 1

   Hello,

   I am wondering if nanoDDSCAT is appropriate for modeling waveguides with nanoparticles on the surface. Every time I attempt to model a rectangular waveguide with nanoparticle...

   https://nanohub.org/answers/question/1991

9. The absorption spectrum of a spherical nanoparticle with size > 50 nm has two peaks

   Q&A|Closed | Responses: 6

   I am trying to simulate the absorption spectrum of a spherical silver nanoparticle of 50 nm in the range of 300-700 nm. The obtained...

   https://nanohub.org/answers/question/1977

10. Questions with Array

    Q&A|Closed | Responses: 4

    Hey there,

    I have used the array function. I placed my shape in a square array with 700 nm distance y and z axis. I've had good results, my problem is knowing how many times is my...

    https://nanohub.org/answers/question/1976

11. Can I set error tolerance?

    Q&A|Closed | Responses: 0

    I'm trying to reproduce some literature results that used an error tolerance of 10^-6. I noticed from looking at the .par file that nanoDDSCAT uses 10^-5 by default. Is there any way of...

    https://nanohub.org/answers/question/1926

12. How can I simulate Zinc Oxide in this method and what data i should upload for correct simulation? Please help and send me the detailed process.

    Q&A|Closed | Responses: 1

    https://nanohub.org/answers/question/1895

13. Does DDA method useful for the study of optical properties of semiconductor nanoparticle like zinc oxide embedded in dielectric polymer like PVP?

    Q&A|Closed | Responses: 4

    https://nanohub.org/answers/question/1894

14. Uploading dielectric constants into nanoDDSCAT?

    Q&A|Open | Responses: 1

    I have complex dielectric constants for aluminum at given frequencies and was hoping to upload this into nanoDDSCAT, but unsure of the proper format or values to put into the...

    https://nanohub.org/answers/question/1819

15. Why do I get only one point after running the simulation

    Q&A|Open | Responses: 1

    I am trying to simulate nanorods for different aspect ratios, but after running the simulation, the graph shows only one point instead of a curve after setting the spectral window 400 - 700 nm....

    https://nanohub.org/answers/question/1637

16. Why do I get only one point after running the simulation

    Q&A|Closed | Responses: 1

    I am trying to simulate nanorods for different aspect ratios, but after running the simulation, the graph shows only one point instead of a curve after setting the spectral window 400 - 700 nm....

    https://nanohub.org/answers/question/1636

17. Nearfield not working?

    Q&A|Closed | Responses: 1

    I tried to do nearfield calculation, but the initialization always sets the parameter to 0, even if choosen in the menue.

    Is there any explanation for this?

    Can I generate...

    https://nanohub.org/answers/question/1592

18. How can one normalize the E-Field intensity?

    Q&A|Closed | Responses: 1

    More specifically, what is the initial Electric Field intensity (E₀)² of DDSCAT? 
    I want to create a normalized E-field intensity data map https://nanohub.org/answers/question/1500

19. limiting storage

    Q&A|Closed | Responses: 2

    Hello,

    I want to run a Nearfield generating simulation using DDSCAT, but i could not get the final results for limited storage. What should i do? Thanks.

    https://nanohub.org/answers/question/1444

20. I keep receiving an error after I run my simulations on a single cylinder.

    Q&A|Closed | Responses: 1

    Reason: 
    "The third parameter for Cylinder must have a value of 1 or 2 or 3." 
    
    I've done this test multiple times with the three different...

    https://nanohub.org/answers/question/1437