28 Nov A hands-on approach to chemistry with 3D printed molecules

Dr. Anthony Williams of the National Center of Computational Toxicology and the Environmental Protection Agency in the US, has developed a JMol searchable database of over 30,000 3D printable crystal models for use in education.

The project first came about when Williams was working with the ChemSpider 2D and 3D database of molecular structures. Though effective, the complex structure of fibers can make them hard to understand simply by looking at them on a screen or on paper.

Bringing science to life

64 years ago, scientists still didn’t understand the structure of DNA. The now famous double-helix structure was only discovered in 1953 when, under the supervision of Rosalind Franklin, PhD student Raymond Gosling took an x-ray image of the molecules through a microscope. And even then, the researchers couldn’t be exactly sure of the shape that they saw. This is where ball and stick models usually come in.

Being able to physically hold the structure of a protein in your hands is an invaluable educational tool, and 3D printing can help speed-up the process, as we’ve seen in previous articles on the use of model brain aneurysmsused to teach surgeons, and in the visualisation of mathematical problems.

Instead of manually putting together lots of fiddly beads, Dr. Williams’ software means the complicated structures can simply be printed out.

3D printing models and tutorials available online

In Williams’ research, 3D printing the molecular structures has been tested with a range of industrial and desktop based 3D printers, including 3D Systems, the Stratasys Mojo and Makerbot. The 3D files are also easily convertible into the whole range of object files and are supported by Jmol interactive tutorials. ChemSpider is a “free chemical structure database providing fast access to over 58 million structures, properties, and associated information” and offers a 3D  view of these structures. Dr. Williams also hopes that such websites will add more molecular structures to the database.

For more information about the production process and the models the article Programmatic conversion of crystal structures into 3D printable files using Jmol is now available online.

Source: 3D Printing Industry

https://3dprintingindustry.com/news/a-hands-on-approach-to-chemistry-in-3d-printed-molecules-99687/