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Instruments / Technical Area	Publication Details	Published	Actions
I24-Microfocus Macromolecular Crystallography	Reducing sample consumption for serial crystallography using acoustic drop ejection Bradley Davy , Danny Axford , John H. Beale , Agata Butryn , Peter Docker , Ali Ebrahim , Gabriel Leen , Allen M. Orville , Robin L. Owen , Pierre Aller Journal Of Synchrotron Radiation 26 DOI: 10.1107/S1600577519009329 Diamond Proposal Number(s): [14493, 19458] Open Access Show Abstract ▼ Abstract: Efficient sample delivery is an essential aspect of serial crystallography at both synchrotrons and X-ray free-electron lasers. Rastering fixed target chips through the X-ray beam is an efficient method for serial delivery from the perspectives of both sample consumption and beam time usage. Here, an approach for loading fixed targets using acoustic drop ejection is presented that does not compromise crystal quality, can reduce sample consumption by more than an order of magnitude and allows serial diffraction to be collected from a larger proportion of the crystals in the slurry.	Sep 2019
Data acquisition	Pico-litre Sample Introduction and Acoustic Levitation Systems for Time Resolved Protein Crystallography Experiments at XFELS Peter Docker , Robert Morris , Michael Newton , Elizabeth Dye , James Kay , John Beale , Danny Axford , Allen Orville , Dave Stuart , Gabriel Leen Sensors & Transducers Journal 7, 39-45 Open Access Show Abstract ▼ Abstract: The system described in this work is a variant from traditional acoustic levitation first described by, Marzo et al. It uses multiple transducers eliminating the requirement for a mirror surface, allowing for an open geometry as the sound from multiple transducers combines to generate the acoustic trap which is configured to catch pico litres of crystal slurries. These acoustic traps also have the significant benefit of eliminating potential beam attenuation due to support structures or microfluidic devices. Additionally they meet the need to eliminate sample environments when experiments are carried out using an X-ray Free Electron Lasers (XFEL) such as the Linac Coherent Light Source (LCLS) as any sample environment would not survive the exposure to the X-Ray beam. XFELs generate Light a billion times brighter than the sun. The application for this system will be to examine turn over in Beta lactamase proteins which is responsible for bacteria developing antibiotic resistance and therefore of significant importance to future world health. The system will allow for diffraction data to be collected before and after turnover allowing for a better understanding of the underling processes. The authors first described this work at Nanotech 2017.	Jul 2017

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