Why NMR?#
What is NMR?#
Nuclear Magnetic Resonance (NMR) is an analytical technique that probes the physical and chemical properties of materials by detecting how atomic nuclei respond to a magnetic field. It's non-destructive, requires minimal sample preparation, and works on liquids, solids, and gels.
How it works#
- Align — Place the sample in a strong magnetic field. Hydrogen nuclei (and other magnetic isotopes) align with or against the field.
- Excite — Send a short radiofrequency pulse to tip the nuclei away from equilibrium.
- Listen — As nuclei return to their original state, they emit a signal (the Free Induction Decay).
- Analyze — The rate and shape of that signal reveal composition, molecular dynamics, and physical properties of the sample.
Two key measurements come from this process:
- T1 (spin-lattice relaxation) — how quickly nuclei recover along the field direction. Tells you about molecular environment and interactions.
- T2 (spin-spin relaxation) — how quickly the signal fades in the transverse plane. Tells you about molecular mobility — liquids decay slowly, solids decay fast.
What can you measure?#
| Industry | Measurement | What NMR tells you |
|---|---|---|
| Dairy | Fat & protein content | Precise composition without chemical reagents |
| Agriculture | Oil & moisture in seeds | Optimal harvest timing, storage quality |
| Polymers | Chain length, branching | Material properties, quality control |
| Textiles | Fiber properties | Thread composition, moisture uptake |
| Pharma | Compound purity | Impurity detection, formulation QC |
| Food & Beverage | Moisture, oil, sugar | Nutritional analysis, process monitoring |
Why TQT Nuclei?#
Traditional NMR software is expensive, runs on a single platform, and requires significant training. TQT Nuclei changes that:
| Legacy NMR software | TQT Nuclei | |
|---|---|---|
| Cross-platform (Windows, macOS, Linux) | ||
| Built-in Python with full scientific stack | ||
| Visual node-based sequence editor | ||
| Automated task scheduling | ||
| Custom workflow pages | ||
| Modern, intuitive UI |
For detailed setup instructions, see the Quick Start Guide. For a reference of NMR terms used in the app, see the Glossary.