In situ measuring devices, methods of making the same, and methods of using the same are provided herein. The in situ measuring devices can include a capillary tube having a reference material sealed inside the capillary tube, where the capillary tube is positioned inside of a solid state or MAS NMR rotor. A target sample can also be positioned in the interior of the solid state or MAS NMR rotor but is sequestered from the reference material by a capillary tube wall. The in situ measuring devices can be used in solid state MAS NMR spectroscopy to quantify one or more parameters of a target sample, such as the quantity of a sample, chemical identity of a sample, or temperature of a sample.
L. Chi et al., "Solid State NMR Spectroscopy/Imaging in Situ Measuring Devices and Methods for Calibration and Determining One or More Quantitative Properties of a Target Sample Abstract,", Sep 2018.
Intelligent Systems Center
US 10 ,067,079 B2