An account is given of the use of neutron diffraction techniques in the study of the structure of inorganic amorphous solids, involving both steady-state and pulsed neutron sources. The quantification of amorphous solids structures is discussed and the various types of structural model employed in the interpretation of neutron diffraction data are outlined, using examples taken from a wide range of materials including amorphous semiconductors, oxide, halide, chalcogenide and metallic glasses. Special emphasis is placed on the correct procedures for the intercomparison of models and experiments and it is shown that the greatest barrier to progress in understanding the structure of amorphous solids lies not with the diffraction data themselves but in the development of new modeling techniques in which parameters can be varied in a systematic way.
I study the structure of inorganic amorphous solids with both steady-state and pulsed neutron diffraction. The use of models to characterize structure is illustrated for materials as diverse as amorphous semiconductor, chalcogenide glasses or metallic glasses. The greatest challenge to understanding the structure of amorphous solids lies not in the improvement of better diffraction techniques but in the development of new modeling techniques in which parameters can be varied in a systematic way.
Judith Butler, a professor of rhetoric and comparative literature at the University of California at Berkeley, wrote this one-sentence abstract for a 1997 article in Diacritics.
The move from a structuralist account in which capital is understood to structure social relations in relatively homologous ways to a view of hegemony in which power relations are subject to repetition, convergence, and rearticulation brought the question of temporality into the thinking of structure, and marked a shift from a form of Althusserian theory that takes structural totalities as theoretical objects to one in which the insights into the contingent possibility of structure inaugurate a renewed conception of hegemony as bound up with the contingent sites and strategies of the rearticulation of power.
Can you even begin to fix this?