3 results about "Sample composition" patented technology

This invention provides a method and system for determining sample composition based on spectral data. [Solution] A scientific instrument for performing spectral analysis comprises a memory for storing computer executable instructions and a processor for executing computer executable instructions, wherein the computer executable instructions perform a first operation using an encoder to compress one or more unknown spectra into one or more compressed unknown spectra in latent space, and a second operation to match one or more compressed unknown spectra with one or more compressed known spectra in order to obtain one or more candidate matches of a sample.

Methods and systems for determining sample composition from spectral data. Methods and systems are disclosed for determining sample composition from spectral data acquired by a charged particle microscope system. Chemical elements in a sample are identified by processing the spectral data with a trained neural network (NN). If the identified chemical elements do not match a known elemental composition of the sample, the trained NN is retrained with the spectral data and the known elemental composition of the sample. The retrained NN can then be used to identify chemical elements within other samples.

This utility model discloses a system for fabricating a chemical composition test specimen for welding wire, including a sample preparation container. The sample preparation container includes an electrically insulated container body, and the interior of the container body forms a sample preparation cavity with an opening at the top. The sample preparation container also includes a cover detachably assembled to the opening, and the cover has a gas channel for communicating with the sample preparation cavity. The fabrication system also includes a medium-frequency induction heating device, including a medium-frequency induction power supply and an induction coil spirally wrapped around the outer periphery of the container body. The induction coil and the medium-frequency induction power supply form a closed circuit for heating the welding wire in the sample preparation cavity. The beneficial effects of this utility model are: using inert gas to protect the molten metal reduces sample oxidation and some element burn-off, effectively prevents the escape of volatile elements in the sample, ensures that the sample composition is consistent with the actual composition, and achieves rapid and low-cost sample preparation.