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Kahnt M, Kalbfleisch S, Björling A, Malm E, Pickworth L, Johansson U. Complete alignment of a KB-mirror system guided by ptychography. OPTICS EXPRESS 2022; 30:42308-42322. [PMID: 36366687 DOI: 10.1364/oe.470591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
We demonstrate how the individual mirrors of a high-quality Kirkpatrick-Baez (KB) mirror system can be aligned to each other to create an optimally focused beam, through minimizing aberrations in the phase of the ptychographically reconstructed pupil function. Different sources of misalignment and the distinctive phase artifacts they create are presented via experimental results from the alignment of the KB mirrors at the NanoMAX diffraction endstation. The catalog of aberration artifacts can be used to easily identify which parameter requires further tuning in the alignment of any KB mirror system.
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Wang H, Braun A, Cramer SP, Gee LB, Yoda Y. Nuclear Resonance Vibrational Spectroscopy: A Modern Tool to Pinpoint Site-Specific Cooperative Processes. Catalysts 2021; 11:909. [PMID: 35582460 PMCID: PMC9109880 DOI: 10.3390/cryst11080909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
Nuclear resonant vibrational spectroscopy (NRVS) is a synchrotron radiation (SR)-based nuclear inelastic scattering spectroscopy that measures the phonons (i.e., vibrational modes) associated with the nuclear transition. It has distinct advantages over traditional vibration spectroscopy and has wide applications in physics, chemistry, bioinorganic chemistry, materials sciences, and geology, as well as many other research areas. In this article, we present a scientific and figurative description of this yet modern tool for the potential users in various research fields in the future. In addition to short discussions on its development history, principles, and other theoretical issues, the focus of this article is on the experimental aspects, such as the instruments, the practical measurement issues, the data process, and a few examples of its applications. The article concludes with introduction to non-57Fe NRVS and an outlook on the impact from the future upgrade of SR rings.
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Affiliation(s)
| | - Artur Braun
- Laboratory for High Performance Ceramics, Empa. Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | | | - Leland B. Gee
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Yoshitaka Yoda
- Precision Spectroscopy Division, SPring-8/JASRI, Sayo 679-5198, Japan
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Victor TW, Easthon LM, Ge M, O'Toole KH, Smith RJ, Huang X, Yan H, Allen KN, Chu YS, Miller LM. X-ray Fluorescence Nanotomography of Single Bacteria with a Sub-15 nm Beam. Sci Rep 2018; 8:13415. [PMID: 30194316 PMCID: PMC6128931 DOI: 10.1038/s41598-018-31461-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 07/20/2018] [Indexed: 11/14/2022] Open
Abstract
X-ray Fluorescence (XRF) microscopy is a growing approach for imaging the trace element concentration, distribution, and speciation in biological cells at the nanoscale. Moreover, three-dimensional nanotomography provides the added advantage of imaging subcellular structure and chemical identity in three dimensions without the need for staining or sectioning of cells. To date, technical challenges in X-ray optics, sample preparation, and detection sensitivity have limited the use of XRF nanotomography in this area. Here, XRF nanotomography was used to image the elemental distribution in individual E. coli bacterial cells using a sub-15 nm beam at the Hard X-ray Nanoprobe beamline (HXN, 3-ID) at NSLS-II. These measurements were simultaneously combined with ptychography to image structural components of the cells. The cells were embedded in small (3-20 µm) sodium chloride crystals, which provided a non-aqueous matrix to retain the three-dimensional structure of the E. coli while collecting data at room temperature. Results showed a generally uniform distribution of calcium in the cells, but an inhomogeneous zinc distribution, most notably with concentrated regions of zinc at the polar ends of the cells. This work demonstrates that simultaneous two-dimensional ptychography and XRF nanotomography can be performed with a sub-15 nm beam size on unfrozen biological cells to co-localize elemental distribution and nanostructure simultaneously.
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Affiliation(s)
- Tiffany W Victor
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | | | - Mingyuan Ge
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | | | - Randy J Smith
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Xiaojing Huang
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Hanfei Yan
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Karen N Allen
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
| | - Yong S Chu
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Lisa M Miller
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA.
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA.
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