## Github with Quantum Espresso Scripts

Hello All, As those who know me in person are aware, I will be defending my thesis here in March and will be leaving MIT in June. I started this blog as a way to keep track of my own research advancements and I have been blown away by how much help it has been…

A large part of computational material science is simply visualizing the input and output of our calculations. I use a variety of tools to do this including VESTA and Avogadro. While both have their strengths and weaknesses (VESTA is great for making publication-quality images, for example), Avogadro is very simple to use and quickly visualize…

## Quantum Espresso Charge Density Backup

In the past couple of months, we have been actively developing a machine learning method to learn charge-density functionals. We have developed this to map charge-density to a property of interest (such as the band-gap or some other property of interest). We are very excited about this code and I will be updating this site…

## Combined Band Diagram and pDOS

Hello All, I wanted to provide another update on creating those cool plots that have both the band diagram with a cool pDOS plot next to it. This guide will build upon my previous guides that you may have found helpful. Check out my guide on pDOS plots here and my band diagram plot here….

## Band Diagram Tutorial for Quantum Espresso

Hello, In this tutorial we will go over how to perform a band structure calculation in Quantum Espresso and then how to plot it in python. This tutorial assumes you use the following things: Quantum Espresso 5.3+ xcrysden python3.4+ Matplotlib Numpy The python requirements will only be if you want to use the plotting tools…

## Another pDOS Plotter

tl;dr: This python script generates many subplots based on a directories file. Download it here: DOS.Layered.zip Hello All, If you come here often for tutorials you may have seen some brief write ups on how to use dos.x and projwfc.x to generate pDOS data (here) or my python script to automatically generate a pDOS plot…

## Integrated Charge Density from Cube File

Hello All, I hope you are starting to enjoy summer as much as I am. This is a quick tutorial on how to read a cube file into a numpy array in python and integrate it. This was born out of a very unique problem I am having right now involving adding electrons to a…

## Parallel Runscript with Parallel Jobs

Hello All, This probably should have been one of my first tutorial posts, but it is worth rehashing now. As many of you will be running on large many processor systems, tuning your runscript is hugely important for a couple reasons: Proper scaling of codes Proper use of Computational Resources Proper use of your time…

## Supercell Builder from QE Output

To download the new version of the QE.py code, click here: www.levilentz.com/Codes/QE.py Hello All, As I read about the new discovery of gravity waves at MIT (check it out: http://news.mit.edu/2016/ligo-first-detection-gravitational-waves-0211), I figured I could make myself feel a bit more impactful by adding into my QE module one other important feature. Recently I have been…

## Further Extending the QE Module

Hello All, Welcome to another post in my publishing my work in my perpetual pursuit of get better at coding in the object oriented (OO) coding paradigm and its application(s) to computational material science. Recently I have been working on iOS app development, and it is amazing how important it is to understand OO coding…