Vacuum transfer holder

Manufactured by Ametek

The Vacuum transfer holder is a device designed to securely transport and handle fragile or delicate samples in a controlled environment. It utilizes a vacuum system to grip and support the sample, ensuring safe and stable transfer between locations.

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Lab products found in correlation

Tecnai g2 electron microscope, by Thermo Fisher Scientific (1 mentions) Us1000 ccd camera, by Ametek (1 mentions) Titan 80 300, by Thermo Fisher Scientific (1 mentions)

4 protocols using vacuum transfer holder

Transmission Electron Microscopy Sample Preparation

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Samples for transmission
electron microscopy (TEM) were prepared by grinding materials in a
mortar and dispersing the powder onto holey carbon TEM grids. Samples
after electrochemical testing in nonaqueous solution were stored and
prepared for TEM in argon atmosphere, and a special Gatan Vacuum Transfer
holder was used for analysis. High-angle annular dark-field, annual
bright field scanning TEM (HAADF-STEM and ABF-STEM, respectively),
and ED patterns were acquired using a probe aberration corrected FEI
Titan^{3 (link)} 80–300 electron microscope
operated at 300 kV.

Grimaud A., Iadecola A., Batuk D., Saubanère M., Abakumov A.M., Freeland J.W., Cabana J., Li H., Doublet M.L., Rousse G, & Tarascon J.M. (2018). Chemical Activity of the Peroxide/Oxide Redox Couple: Case Study of Ba5Ru2O11 in Aqueous and Organic Solvents. Chemistry of Materials, 30(11), 3882-3893.

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Structural Analysis of Cathode Materials

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In order to perform phase analysis and crystal structure refinement, powder X-ray diffraction (PXRD) patterns were recorded on a Huber G670 Guinier diffractometer using Co-K_α1 radiation (λ = 1.78892 Å), a curved Ge (111) monochromator, and an image plate detector at room temperature over the 10°–100° 2θ range with the angular step of 0.01°. The unit cell parameters were refined using the Le Bail method and crystal structures were refined using the Rietveld method with the JANA2006 program package.^{23 (link)}For the transmission electron microscopy (TEM) studies, a tiny amount of powder sample was grinded with an agate mortar and pestle under ethyl alcohol. The samples after electrochemical cycling were prepared in an Ar-filled glove box by crushing the cathode mass in a mortar with dimethyl carbonate and depositing a drop of suspension onto holey-carbon-coated copper grids. The samples were transported to the microscope column in a Gatan vacuum transfer holder completely excluding contact with air. Electron diffraction (ED) patterns, high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images, and EDX compositional maps in the STEM mode (STEM-EDX) were acquired on a probe aberration-corrected Titan Themis Z electron microscope at 200 kV equipped with a Super-X system for energy-dispersive X-ray (EDX) analysis.

Morozov A.V., Savina A.A., Boev A.O., Antipov E.V, & Abakumov A.M. (2021). Li-based layered nickel–tin oxide obtained through electrochemically-driven cation exchange. RSC Advances, 11(46), 28593-28601.

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Structural Analysis of Li-Rh-O Samples

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The Li 1-x RhO 2 samples were investigated with selected area electron diffraction (SAED) and electron diffraction tomography (EDT) using an FEI Tecnai G2 electron microscope operated at 200 kV. The samples for the TEM study were prepared by grinding the material in hexane and depositing a few drops of the suspension onto holey carbon TEM grids. The samples were stored and all preparations performed in a glovebox filled with argon. A Gatan vacuum transfer holder was used to prevent exposure of the sample to the air during the transport to the electron microscope.
Electron diffraction tomography (EDT) data were collected in the angular range ~ 40 o using manual rotation with a 1 o step, followed by a reciprocal space reconstruction with the PETS software [31] . The positions of rhodium atoms were found by the charge flipping method using the SUPERFLIP program [32] . The atomic coordinates of the oxygen atoms were determined using difference Fourier maps. In order to complete the structure model, it was first refined from electron diffraction data without the Li atoms, using the JANA2006 program [33] . Then, the tentative

Mikhailova D., Karakulina O.M., Batuk D., Hadermann J., Abakumov A.M., Herklotz M., Tsirlin A.A., Oswald S., Giebeler L., Schmidt M., Eckert J., Knapp M, & Ehrenberg H. (2016). Layered-to-Tunnel Structure Transformation and Oxygen Redox Chemistry in LiRhO2 upon Li Extraction and Insertion. Inorganic chemistry, 55(14).

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Low-Dose TEM Characterization of Samples

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TEM measurements were performed using an aberration-corrected (image) FEI Titan 80-300 operated at 80 kV acceleration voltage, equipped with a Gatan US1000 CCD camera and a Gatan Tridem 863 energy filter. The samples were transferred under inert conditions (Argon) from the glove box to the microscope using Gatan vacuum transfer holder minimizing the possible reaction between the sample and air (oxygen and moisture). The TEM was operated under controlled low-dose conditions to minimize electron beam damage of the sample.

Cambaz M.A., Anji Reddy M., Vinayan B.P., Witte R., Pohl A., Mu X., Chakravadhanula V.S., Kübel C, & Fichtner M. (2016). Mechanical Milling Assisted Synthesis and Electrochemical Performance of High Capacity LiFeBO3 for Lithium Batteries. ACS applied materials & interfaces, 8(3).

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