I22: SAXS/WAXS beamline at Diamond Light Source -- an overview of 10 years operation

Smith, Andrew J.; Alcock, Simon G.; Davidson, L.S.; Emmins, J.H.; Bardsley, J.C. Hiller; Holloway, P. H.; Malfois, Marc; Marshall, Andrew; Pizzey, Claire; Rogers, Sarah E.; Shebanova, Olga; Snow, Tim; Sutter, John P.; Williams, Eugene; Terrill, Nicholas J.

doi:10.48550/arxiv.1903.05405

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2019

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“…Small-Angle X-ray Scattering. High-pressure SAXS measurements were performed at beamline I22, Diamond Light Source, Didcot, U.K, 39 employing the beamline's high pressure setup. 40 The setup consists of a high pressure sample cell, which is sealed by two diamond windows to allow the Xray beam to pass.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Supercrystal Formation of Gold Nanorods by High Pressure Stimulation

et al. 2019

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We demonstrate the pressure-induced formation of supercrystals made from PE-Gylated gold nanorods in aqueous suspension. Utilizing the combined effect of hydrostatic pressure and salt on the solubility of the organic PEG shell that passivates the nanorods, the reversible formation of two-dimensional hexagonal supercrystals has been observed by means of small angle X-ray scattering. The pressure dependence of the crystal lattice's structural parameters is determined. By time-resolved measurements performed after a pressure-jump, the growth process of the crystals is found to be finished already after a few seconds. The presented results demonstrate that by PEGylating nanoparticles pressure-induced homogeneous supercrystals can be formed for different particle shapes, in particular anisotropic nanorods, which determine the resulting lattice type.

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Section: ■ Materials and Methodsmentioning

confidence: 99%