Department of Chemistry & BiochemistryUniversity of Maryland,  College Park, MD 20742    

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Last updated: Feb. 4, 2021
Operation protocol during Limited Occupancy restriction
from Aug. 24, 2020 until further notice.

MainRules + Contacts
& Detailed Operational Protocol

*** Training new users, supervised use, and work in pairs - on request only ***

Remote access to XRD analysis software including ICDD database (PDF-2013)
has been activated (see details here).  Login info is available upon request.

Covid info : WorldOmeters.info, CDC guidelines, Maryland info, & UMD info.

 Follow us on Facebook!

 XCC brochure

 McMurdie Award!McMurdie

 Blue Book: 2nd Ed.

New Lab Constrution:


  XCC offers

  and performs

  • characterization of materials using non-destructive X-ray diffraction analysis and

  • crystal structure determination from single crystal and polycrystalline samples:

  Chemical Crystallography:

  • provides single crystal structure determination of variety of inorganic, metal-organic, organic and pharmaceutical compounds as well as minerals and intermetallic compounds, including absolute structure determination, treatment of merohedral and non-merohedral twins, disordered, OD and modulated crystals at low, ambient or elevated temperature, in open or inert atmosphere.

  Materials Characterization:

  • provides powder X-ray diffraction analysis and characterization of polycrystalline and nano-crystalline materials and thin films, covering phase identification, qualitative and quantitative analysis, degree of crystallinity / amorphous content determination, micro-diffraction and area mapping, samples of any size and shape, crystallite size and micro-strain determination,

  • as well as extract structural information: as ab initio indexing and high precision unit cell refinement, crystal structure refinement using the Rietveld method or pair distribution function, as well as ab initio structure determination from powder diffraction data.

  Advanced Diffraction:

  • provides X-ray diffraction measurements for reflectivity (XRR) from thin films using X'Pert Pro MRD system and

  • small angle x-ray scattering Xeuss SAXS/WAXS/GISAXS system for proteins, polymers and nanomaterials.


  The Center also

  • offers its equipment and expertise for Collaborative research with other local universities, government institution as well as industry located in Maryland, Virginia, Delaware, Washington DC, and nationwide;
  • provides Consulting in the field of X-ray diffraction and crystallography, solid state and materials chemistry, forensic analysis, materials characterization, pharmaceuticals, patents, legal issues, and others.



Dash-board   PLEASE send only electronic forms, unless they have to be submitted with samples.
 XCC info

 XCC brochure
 How to become XCC user?
 How to submit samples
 Our rates

 FACES  Booking Instrumental Time - Faces Group: XCC_UMD
 Fill-In Submission Forms

Powder Diffraction (PXRD, XRR) Form [D8, C2, X'pert] 

Crystal Structure Determination Form [Apex2]

Small Angle X-ray Scattering Form [Xeuss]

 New User

 User Registration Form
 XCC Lab Access Form

 Radiation Safety

 Start Radiation Safety Training for Use of X-ray Devices (see Radiation Safety site)
 Apply for Unsupervised (Authorized) user status: Training & Experience (T&E) Form



 Peter Y. Zavalij, PhD

  Office: (301)405-1861, room B0108B, e-mail: pzavalij@umd.edu

 Crystallographer, Director of
 X-ray Crystallographic Center
 PXRD Lab: (301)405-3230, room B0112,
                  Research Assistant - Timothy Diethrich tjd5@umd.edu
 SAXS Lab: (301)405-9795, room B0108A,
                  Faculty Assistant - Dr. Wonseok Hwang whwang@umd.edu

See also:
 My webpage

 Google Scholar


 Mailing and Shipping addresses, Our location, Directions rom Visitor Parkings to XCC

 For directions (by Google maps) to the closest visitor
parking type:
       H College Park, MD or Regents Garage, College Park, MD

For directions to the Chemistry loading dock type (exactly) or click on:
      12 College Park, MD