ACA: The Structural Science Society is returning to an in-person gathering for the 72nd annual meeting. Scientists interested in biological, chemical, and material structures will travel to the heart of Portland, Oregon, July 29 - August 3, 2022.  Registration closes on July 8th!

Registration Ends July 8th!


There is still space in our block!


Plan your trip to Portland!


Call for Submissions

The American Crystallographic Association (ACA) is in the preliminary stages of creating a online portal of videos that aim to help the ACA community promote and develop crystallographic literacy in the classroom and beyond.  Find out more...  


Introducing ACA: The Structural Science Society

After over a year of development we are excited to launch the new ACA logo incorporating "The Structural Science Society".  The ACA has always been a home for structural scientists and as the science develops and grows so are we.  ACA Vice President Cora Lind-Kovacs summed up the change perfectly:

"As we continue to push for new frontiers, combining data obtained by such methods with traditional crystallographic diffraction or other scattering techniques holds tremendous potential, and the addition of “The Structural Science Society” shows that the ACA is committed to providing a place that brings together all scientists that are pursuing atomic level structural analysis."  

Read the announcement and find out more about the logo.  


Join or Renew Today!


Crystallography and structural science have been and continue to be on the forefront of major discoveries in the life sciences, medicinal chemistry, and materials science. The American Crystallographic Association, Inc. (ACA) is the home for over 1,000 structural scientists all over the world who are united by the common purpose to “promote interactions among scientists who study the structure of matter at atomic (or near atomic) resolution”.

The annual ACA membership renewal period for 2022 is open and new members are always welcome to join! Annual dues allow us to share our scientific passions and accomplishments through different approaches, including the annual conference, publications and educational outreach.

Membership in the ACA is open to any person who is actively interested in the purposes of the Association. The ACA welcomes everyone from students to retirees. All of our members contribute to the life and vigor of the Association.

ReleXions: Spring 2022



Education & Outreach

Crystal growing competitions are wonderful events that get kids excited about science.  We are proud to support a number of crystal growing competitions around the US.  Find out more...

(pictured above: STARS Teammates from the Cobb County Crystal Growing Competition)


ACA Statement on the Russian Invasion of the Ukraine

On March 14, 2022 ACA issued a statement concerning the situation in the Ukraine.