QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: sathyajit on June 17, 2015, 16:48

Title: How to calculate Id Vds for given gate bias
Post by: sathyajit on June 17, 2015, 16:48: Hi,

I used the script MoS2_FET_Mo_test-3-gatescan-test-3.py to loop over gate bias to get to Vg=0.5V
Now to run Id Vd I am using MoS2_FET_Mo_iv-test-1.py
But it gives the following error

File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
+------------------------------------------------------------------------------+
| |
| Atomistix ToolKit 2014.2 [Build 811a2e4] |
| |
+------------------------------------------------------------------------------+
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
^
SyntaxError: invalid syntax
File "MoS2_FET_Mo_iv-test-1.py", line 10
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]

How to resolve the issue ?

Regards
Sathyajit
Title: Re: How to calculate Id Vds for given gate bias
Post by: Jess Wellendorff on June 18, 2015, 07:56: This is a syntax error. The correct syntax for nlread is
device_configuration = nlread("ncfile.nc", DeviceConfiguration, "object_id")[0]
where "object_id" should be a string (and may often be left out).

Therefore,
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,trans0.5)[0]
should be
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc", DeviceConfiguration, "trans0.5")[0]
Title: Re: How to calculate Id Vds for given gate bias
Post by: sathyajit on June 19, 2015, 06:23: Hi Jess,

I changed it to "trans0.5" but now the error is :

Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
+------------------------------------------------------------------------------+
| |
| Atomistix ToolKit 2014.2 [Build 811a2e4] |
| |
+------------------------------------------------------------------------------+
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range
Traceback (most recent call last):
File "MoS2_FET_Mo_iv-test-1.py", line 10, in <module>
device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc",DeviceConfiguration,"trans0.5")[0]
IndexError: list index out of range

I am now attaching a snapshot of my lab floor for the .nc file.
Title: Re: How to calculate Id Vds for given gate bias
Post by: Jess Wellendorff on June 19, 2015, 09:02: OK, is see the problem. The issue is that you did not name the object_id "trans0.5". Instead, you have used "trans0.5 V". The strings used for nlread must exactly match what you used for nlsave:

device_configuration = nlread("/home/sathya/.vnl/MoS2_FET/MoS2_FET_Mo_test-3.nc", DeviceConfiguration, "trans0.5 V")[0]
Title: Re: How to calculate Id Vds for given gate bias
Post by: sathyajit on June 19, 2015, 09:34: Hi,

I tried using "trans 0.5 V" and "trans0.5V" and "trans0.5" , but still I face the same issue. Kindly help me out.

Regards
Sathyajit
Title: Re: How to calculate Id Vds for given gate bias
Post by: Jess Wellendorff on June 19, 2015, 09:50: You need to use the exact same string (whatever it is) for reading the nc file as you used for writing the nc file.