The American Crystallographic Association, Inc. (ACA) is a non-profit, scientific organization for scientists who study the structure of matter via

crystallographic Crystallography is the experimental science of determining the arrangement of atoms in crystalline solids. Crystallography is a fundamental subject in the fields of materials science and solid-state physics ( condensed matter physics). The w ...

methodologies. Since its founding in 1949 it has amassed over 2000 members worldwide. The association meets annually in July and has several interest groups dealing with specific aspects of crystallography, including

fiber diffraction Fiber diffraction is a subarea of scattering, an area in which molecular structure is determined from scattering data (usually of X-rays, electrons or neutrons). In fiber diffraction the scattering pattern does not change, as the sample is rotat ...

neutron scattering Neutron scattering, the irregular dispersal of free neutrons by matter, can refer to either the naturally occurring physical process itself or to the man-made experimental techniques that use the natural process for investigating materials. Th ...

and

powder diffraction Powder diffraction is a scientific technique using X-ray, neutron, or electron diffraction on powder or microcrystalline samples for structural characterization of materials. An instrument dedicated to performing such powder measurements is call ...

. A quarterly magazine, called ''ACA RefleXions'', is published in addition to a scholarly journal. ''Structural Dynamics'' is a peer-reviewed, open access, online-only journal co-published by ACA and AIP Publishing. It highlights research articles on structural determination and dynamics of systems, enabled by the emerging new instruments (e.g. XFELs, high harmonic generation, ultra-short electron sources, etc.) and new experimental and theoretical methodologies. The journal is accepting short communications, topical reviews, and research papers in the following topics: Experimental Methodologies, Theory and Modeling, Surfaces and Interfaces, Materials, Liquids and Solutions, and Biological Systems. The association presents several awards

Past presidents

Past presidents of the association include: * Isidor Fankuchen (1950) *

Ralph Walter Graystone Wyckoff Ralph Walter Graystone Wyckoff, Sr. (August 9, 1897 in Geneva, New York – November 3, 1994 in Tucson, Arizona) was an American scientist and pioneer of X-ray crystallography. He was elected member of the National Academy of Sciences in 1949 and ...

(1951) *

Paul Peter Ewald Paul Peter Ewald, FRS (January 23, 1888 in Berlin, Germany – August 22, 1985 in Ithaca, New York) was a German crystallographer and physicist, a pioneer of X-ray diffraction methods. Education Ewald received his early education in the clas ...

(1952) *

William Lipscomb William Nunn Lipscomb Jr. (December 9, 1919April 14, 2011) was a Nobel Prize-winning American inorganic and organic chemist working in nuclear magnetic resonance, theoretical chemistry, boron chemistry, and biochemistry. Biography Overview Li ...

(1955) * Elizabeth A. Wood (1957) * Robert E. Rundle (1958) * Henri A. Levy (1965) *

Jerome Karle Jerome Karle (born Jerome Karfunkle; June 18, 1918 – June 6, 2013) was an American physical chemist. Jointly with Herbert A. Hauptman, he was awarded the Nobel Prize in Chemistry in 1985, for the direct analysis of crystal structures using X-ra ...

(1972) * Philip Coppens (1978) * Jenny Glusker (1979) * David Sayre (1983) *William L. Duax (1986) *

Helen M. Berman Helen Miriam Berman is a Board of Governors Professor of Chemistry and Chemical Biology at Rutgers University and a former director of the RCSB Protein Data Bank (one of the member organizations of the Worldwide Protein Data Bank). A structural b ...

(1988) *Thomas Koetzle (2011) *George N. Phillips, Jr. (2012) *Cheryl Stevens (2013) *Martha Teeter (2014) *Christopher Cahill (2015) *Thomas Terwilliger (2016) *Amy Sarjeant (2017) *Lisa Keefe (2018) *Joseph D. Ferrara (2019) *Brian Toby (2020) *David Rose (2021) *Diana Tomchick (2022)

References

External links

American Crystallographic Association website
{{authority control Crystallography organizations Scientific organizations established in 1949 1949 establishments in the United States Academic organizations based in the United States Chemistry societies Physics societies Organizations based in Buffalo, New York

Past presidents

See also

References

External links