The Pittsburgh Diffraction Society 
The Pittsburgh Diffraction Society Annual Conference

We invite you to celebrate the PDC's 80th anniversary and join us at the Pittsburgh Diffraction Conference in Pittsburgh, PA, on Oct. 15-17, 2023 at the University of Pittsburgh. More details will be posted soon.   

Conference Web Page


Conference flyer 


Sidhu Award

The next Sidhu Award will be destowed at the 2024 PDS conference. It is awarded for Outstanding Contributions to the Fields of Crystallography or Diffraction by a Scientist within Six Years of Her / His Ph.D.


The 2023 George Jeffrey Award for Outstanding Graduate Students to attend the Congress of the 2023 IUCr in Melbourne, Australia.



Welcome to our Website
The Pittsburgh Diffraction Society (PDS) is a not-for-profit organization which promotes fundamental and applied diffraction and crystallographic research and the exchange of ideas and information concerning such research. The PDS was founded by Professor Surain S. Sidhu who organized the first Pittsburgh Diffraction Conference in 1943. Since that time the PDS has sponsored an annual conference which is held annually, returning to Pittsburgh, Pennsylvania every five years. Professor Sidhu is remembered and honored through the Sidhu Award, given to an outstanding scientist who is within six years of having earned the Ph.D. or its equivalent. Other awards sponsored by the PDS to support and encourage young scientists include the George Jeffrey Award, which provides travel assistance for students attending the triennial Congress of the International Union of Crystallography, and the Chung Soo Yoo Award given to the best student presenter at the annual Pittsburgh Diffraction Conference, and the Bryan M. Craven Scholarship, given to a foreign student, preferably from New Zealand or Australia, to assist with travel expenses to participate in the ACA Summer Course in Crystallography. 

Related Links
The International Union of Crystallography
The American Crystallographic Association
The ACA service crystallography homepage
The ACA small molecule SIG homepage