Description

The Brazilian Synchrotron Light Laboratory (LNLS) of the Brazilian Center for Research in Energy and Materials (CNPEM) will host the third International Sirius Workshop on X-ray Nanospectroscopy, Nanodiffraction and Nanoimaging, which has been named with the acronym XAYNAN, recalling in our autochthon language Tupi-Guarani, the hummingbird. This one-day workshop will be held on November 7, 2023, as one of the satellite events of the 33rd Annual LNLS Users Meeting.

This workshop aims to bring together the LNLS community – external users, including students, staff scientists, and engineers – and experts working in the field of x-ray spectroscopy, diffraction, and imaging at leading laboratories around the world.

The first of the series was held in October 2019 and focused on the X-ray nanoprobe beamline for the Sirius storage ring. This edition enlarges the scope of the workshop, and x-ray techniques and applications, encompassing other beamlines, bringing a more comprehensive panel around x-ray techniques for imaging, diffraction, and spectroscopy with a micrometer to nanometer scale resolution.

The 3rd XAYNAN Workshop will consist of invited and contributed talks presenting and discussing the new scientific opportunities offered by x-ray nanoprobes, fully coherent x-ray sources, x-ray computed tomography, as well as research and experimental challenges in multidisciplinary areas.

Organization

Chair: Carlos A. Pérez (LNLS/CNPEM)

Co-chair: Douglas Galante (LNLS/CNPEM)

Aline Ribeiro Passos (LNLS/CNPEM)

Daniela Zanchet (IQ-UNICAMP)

Haroldo Cavalcante Pinto (USP-São Carlos)

  • Event Location: Auditorium – at Sirius entrance, at CNPEM campus in Campinas-SP

Program

Time Satelite Workshop XAYNAN
08:00 – 08:30 Registration and check-in
08:30 – 08:40 Welcome – Carlos A. Pérez
Moderator: Daniela Zanchet
08:40 – 09:20 Highlights of the Hierarchical and Heterogeneous Matter Division – Hélio Tolentino (Head, Division of Heterogeneous and Hierarchical Matter, LNLS/Sirius)
09:20 – 10:00 In operando studies for X-ray mapping in cathodic materials in Li-ion cells. Effects of chemical heterogeneities (Invited talk-1) – Felix Requejo (INIFTA, La Plata, Argentina)
10:00 – 10:30 Coffee Break
Moderator: Douglas Galante
10:30 – 11:00 Tracing paleoenvironmental and preservational aspects of 3.4 billion years old fossils from Pilbara region, Western Australia by using synchrotron-based X-rays techniques – Flávia Callefo (CNB beamline, LNLS/Sirius)
11:00 – 11:30 How tomography helps to solve geological puzzles – Carolina Camarda (CNB beamline, LNLS/Sirius)
11:30 – 12:00 In situ Monitoring of Exsolving Nanoparticles from Perovskite Oxides using Synchrotron-based XRD and XAS – Swathi Raju (IQ-UNICAMP)
12:00 – 14:00 Lunch Break
Moderator: Carlos A. Pérez
14:00 – 14:40 Science opportunities with scanning microscopy at new generation X-ray sources (Invited talk-2) – Dina Carbone (MAX IV, Lund- Sweden)
14:40 – 15:10 Three-Dimensional Imaging of Hierarchically Mesoporous Catalysts with Coherent X-ray Diffractive Imaging – Florian Meneau (CAT beamline, LNLS/Sirius)
15:10 – 15:40 Multispectral studies of metal halide perovskites: simultaneous x-ray ptychography, x-ray fluorescence, and x-ray excited optical luminescence experiments – Francisco M. C. da Silva (CNB beamline, LNLS/Sirius)
15:40 – 16:10 Coffee Break
Moderator: Haroldo Cavalcanti Pinto
16:10 – 16:50 Dynamics in soft matter probed by X-ray photon correlation spectroscopy (Invited talk-3) – Aline Ribeiro Passos (CAT beamline, LNLS/Sirius)
16:50 – 17:30 Discussion with the community/Closing

Topics

  • Catalysis, electrocatalysis, electrochemistry
  • Biomaterials, biotechnology
  • Plant and soil science
  • Nutrition, food security, biofortification
  • Cell and tissue imaging, bioimaging
  • Batteries, Solar cells
  • Porous materials, multiphysics and multiphase flow
  • Environmental remediation
  • CO2 sequestration
  • Dose, radiation damage

Invited Speakers

Geraldine Carbone - MAX-IV, Lund, Sweden

Title: Science opportunities with scanning microscopy at new generation X-ray sources

Abstract: The use of focused X-ray beams in the micron and sub-micron range has fostered the progress of a wide range of scanning microscopy approaches that exploit the numerous interactions of X-rays with matter. These methods are becoming crucial for an increasing number of research fields, such as energy materials, electronic devices, biology, to cite a few. Nanobeams produced at 4th generation synchrotrons have coherence properties that make them ideal for a 3D diffraction-based microscopy with unique sensitivity to strain and defects in crystalline materials and allow delving into materials heterogeneities. We provide here a short overview on the use of nanobeams for diffraction experiments, and perspectives for their use in spectroscopy studies.

Felix Requejo: Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)

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Aline Passos Ribeiro - LNLS/CNPEM

Title: Dynamics in soft matter probed by X-ray photon correlation spectroscopy

Abstract: X-ray Photon Correlation Spectroscopy (XPCS) is an emerging coherent X-ray scattering technique enabling to probe dynamics based on observations of fluctuations in the intensity of coherent X-ray speckles. XPCS has contributed to address important questions in soft matter such as phase separation in protein solutions, colloidal microscopic organization during gelation, structure evolution of thermo-reversible gels, relaxation in polymer electrolytes, among others. The unique capabilities of XPCS to probe dynamics and structural evolution in non-equilibrium systems can answer fundamental questions about phase separation, gels transitions, assembly and disassembly processes, to name just a few. In this presentation I will show some recent results of soft matter dynamics probed by in XPCS at Cateretê beamline.

This is a satellite event to the 33rd edition of the Annual Users Meeting (RAU).