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Inorganic materials are materials made of inorganic substances alone or mixed with other substances. The most studied materials are minerals, acid and base salts, coordination compounds, metals, carbon and silicon crystals, etc. Most of the inorganic materials are easy to cultivate, however, there are still some crystals that are difficult to crystallize or can only be formed at the nanometer level, in which case, MicroED technology can be used for structural analysis.
Technical Features – MicroED
MicroED is a structure analysis technique which is developed based on cryo-transmission electron microscopy. The electron diffraction data is collected and analyzed by diffracting electrons from tiny crystals. Extremely small crystal sizes, like micro- and nano-sized crystals, can produce diffraction signals with sufficiently high signal-to-noise ratios. High resolution diffraction data can be provided quickly and efficiently, and it significantly reduces the requirements for sample shape, purity and size.
CeNbO4+δ, a family of superheavy metal materials with different oxygen contents (CeNbO4, CeNbO4.08, CeNbO4.25, CeNbO4.33), is associated with oxide ion transport, and its oxide ion transport mechanism has been unclear due to the unknown atomic structures of CeNbO4.08 and CeNbO4.33. In 2020, the Junliang Sun's group at Peking University resolved the structures of CeNbO4.08 and CeNbO4.33 by 3D ED technology (equivalent to MicroED) and confirmed the ion transport mechanisms of CeNbO4.08 and CeNbO4.25 oxides by molecular dynamics simulation studies.
Reference: Modulated structure determination and ion transport mechanism of oxide-ion conductor CeNbO 4+δ
Our technical support and commercial colleagues will keep a smooth communication with you throughout the process. After establishing contact with you, we will understand your sample information and requirements in detail, and provide you with the best customized solution.
You need to fill out the Sample Information Form and provide the information required by the technical team for evaluation. For example, providing powder diffraction data and SEM data, the technical team will then provide you with the sample evaluation results and preliminary feasibility program.
3. Sample Delivery
You can choose the appropriate shipping method according to the characteristics of samples.
4.Data Collection and Processing
We will prepare and process the samples according to the characteristics of the samples and the purpose of the experiment. The sample is placed under the electron microscope to find the appropriate sample particles, and series of clear and high quality electron diffraction point images will be collected.
5. Structure Analysis
We will use different algorithms, such as Patterson method, direct method, charge flip method, maximum entropy method, genetic algorithm, simulated annealing method, etc., to resolve the distribution of atoms in the crystal and obtain the initial structure of the crystal. We will further refine the initial structure of the crystal to obtain a chemically reasonable and experimentally observed structure, and finally deliver the results.