In the field of sustainable manufacturing, vitrimer materials containing dynamic covalent bonds (DCBs) have become a research hotspot due to their unique combination of thermoset-like stability below the topological freezing temperature (Tv) and thermoplastic-like processability above Tv. Low-field nuclear magnetic resonance (LF-NMR) relaxation measurements, with their high sensitivity to molecular dynamics, have emerged as a key technique for elucidating the chemical exchange mechanisms within vitrimers. In addition, compared to conventional rheological methods that typically require destructive testing, LF-NMR offers the significant advantage of non-destructive analysis.

This application investigates the pore connectivity of HY zeolites subjected to nitric acid elution (DA(HNO3 0.5 h)-Y) and untreated HY zeolites (H-Y). The samples were first subjected to a water-saturation treatment by immersing the zeolites in deionized water for 72 hours to ensure thorough adsorption of water molecules into the internal pore structure of the zeolites.

Fuel cells are highly efficient power generation devices that use hydrogen as fuel and have attracted significant attention due to their potential to reduce carbon dioxide emissions. In this application, low-field nuclear magnetic resonance (LF-NMR) technology is used to measure the relaxation times of water confined within the pores of proton exchange membranes during thermal cycling. This enables the evaluation of pore size distribution, as the T2 relaxation time of water confined in small pores decreases with decreasing pore size.

This application innovatively employs low-field nuclear magnetic resonance (LF-NMR) technology to investigate the effect of strain on the performance of HTPB coating materials. By measuring transverse relaxation properties, crosslink density, and microstructural changes under different strain conditions, the technique provides valuable insights into the material's response at the molecular level.

CMP, short for Chemical Mechanical Polishing, is an essential process in semiconductor wafer manufacturing and plays a critical role in achieving high-precision and high-performance wafers.The main components of CMP slurry include abrasive particles, pH adjusters, oxidizing agents, and dispersants.Low-field nuclear magnetic resonance (LF-NMR) relaxation technology can distinguish the thin layer of surface-bound solvent molecules at the solid–liquid interface between nanoparticles and the solvent. This enables the estimation of the specific surface area covered by the solvent on particle surfaces, which in turn allows for the evaluation of the dispersibility of CMP slurries and related suspension samples.

With the continuous performance demands driven by the evolution of electronic products and the outstanding role of nanotechnology in enhancing material properties, the addition of specialized materials to ink formulations can significantly improve substrate flexibility and electrical conductivity. The dispersibility of these materials within the ink directly affects the end-use performance of the product. As an emerging method for evaluating particle dispersibility, low-field nuclear magnetic resonance (LF-NMR) has matured into a reliable technique, offering advantages such as speed, in-line measurement capability, non-destructive testing, and environmental friendliness.

Particle dispersion refers to the process of powder particles separating and dispersing evenly throughout the liquid phase. Depending on the dispersion method, it can be classified into the following types:

Low-field nuclear magnetic resonance primarily refers to nuclear magnetic resonance instruments with relatively low magnetic field strength. The application fields of low-field NMR technology are very broad and are continuously expanding.

Using low-field nuclear magnetic resonance (NMR) to elucidate the changes in moisture distribution and state in wet, porous fabrics during a simulated drying process.

Small NMR (desktop NMR) provides comprehensive research solutions and is suitable for a wide range of materials, including elastomers such as rubber, as well as membrane materials and nanomaterials in the biological field.