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Title Electrochemistry and Microfluidic Environments for the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS
  • W.H. Wilendorf, R.R. Geraldes, L.M. Kofukuda, I.T. Neckel, H.C.N. Tolentino
    LNLS, Campinas, Brazil
  • P.S. Fernández
    UNICAMP, Campinas, São Paulo, Brazil
Abstract CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) is a state-of-the-art multi-technique beamline at the 4th-generation Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS), with achromatic optics and fully-coherent X-ray beam in the energy range between 2.05 and 15 keV. At the TARUMÃ station, the in-vacuum KB focusing system has been designed with a large working distance of 440 mm, allowing for a broad range of independent sample environments to be developed in open atmosphere to benefit from the spot size between 550 to 120 nm with a flux in the order of 1e11 ph/s/100mA. Hence, together with a number of different detectors that can be simultaneously used, a wide variety of studies of organic and inorganic materials and systems are possible using cutting-edge X-ray-based techniques in theμand nanoscale, including coherent diffractive imaging (CDI), fluorescence (XRF), optical luminescence (XEOL), absorption spectroscopy (XAS), and diffraction (XRD). Even though samples over the centimeter range can be taken at Tarumã, the small beam and relatively low energies point towards optimized and reduced-size sample holders for in situ experiments. This work describes two related setups that have been developed in-house: a small-volume electrochemical cell with static fluid*; and another multifunctional environment that can be used both as a microfluidic device and as an electrochemistry cell that allows for fluid control over samples deposited on a working electrode. The mechanical design of the devices, as well as the architecture for the fluid and electrical supply systems, according to the precision engineering concepts required for nanopositioning performance, are described in details.
Footnotes & References *Vicente, Rafael A., et al., "Bragg Coherent Diffraction Imaging for In Situ Studies in Electrocatalysis," ACS nano (2021).
Funding Ministry of Science, Technology and Innovation (MCTI)
Paper download WEPC03.PDF [1.185 MB / 4 pages]
Poster download WEPC03_POSTER.PDF [2.107 MB]
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Conference MEDSI2020
Series Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation (11th)
Location Chicago, IL, USA
Date 24-29 July 2021
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Yifei Jaski (ANL, Lemont, IL, USA); Patric Den Hartog (ANL, Lemont, IL, USA); Kelly Jaje (ANL, Lemont, IL, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany)
Online ISBN 978-3-95450-229-5
Online ISSN 2673-5520
Received 29 July 2021
Accepted 19 October 2021
Issue Date 07 November 2021
DOI doi:10.18429/JACoW-MEDSI2020-WEPC03
Pages 310-313
Creative Commons CC logoPublished by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.