Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

NMR Relaxometry: Theory and Applications

Description

This lecture covers the theory and applications of NMR relaxometry, focusing on the principles of spin dynamics, T₂ relaxation, and pore size determination. Practical aspects such as free induction decay, CPMG sequences, and interpretation of relaxation curves are discussed. The lecture also explores the use of NMR relaxometry in studying water dynamics in different environments, including desorption isotherms. Overall, the instructor provides insights into the challenges and opportunities of ¹H NMR relaxometry in material science and environmental research.

In MOOC

Sorption and transport in cementitious materials

Official source

Related concepts (24)

Spin–lattice relaxation

During nuclear magnetic resonance observations, spin–lattice relaxation is the mechanism by which the longitudinal component of the total nuclear magnetic moment vector (parallel to the constant magnetic field) exponentially relaxes from a higher energy, non-equilibrium state to thermodynamic equilibrium with its surroundings (the "lattice"). It is characterized by the spin–lattice relaxation time, a time constant known as T1.

Spin–spin relaxation

In physics, the spin–spin relaxation is the mechanism by which Mxy, the transverse component of the magnetization vector, exponentially decays towards its equilibrium value in nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). It is characterized by the spin–spin relaxation time, known as T2, a time constant characterizing the signal decay. It is named in contrast to T1, the spin–lattice relaxation time.

Nuclear magnetic resonance

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca.

Magnetic resonance imaging

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans.

Strong interaction

In nuclear physics and particle physics, the strong interaction, which is also often called the strong force or strong nuclear force, is a fundamental interaction that confines quarks into proton, neutron, and other hadron particles. The strong interaction also binds neutrons and protons to create atomic nuclei, where it is called the nuclear force. Most of the mass of a common proton or neutron is the result of the strong interaction energy; the individual quarks provide only about 1% of the mass of a proton.

Related lectures (32)

Spin Relaxation in Magnetic Resonance

Introduces the fundamentals of spin relaxation in magnetic resonance, covering spin-lattice and spin-spin relaxation, and rotational motion in liquids.

Spin echoes & coherence transfer

Explores spin echoes, coherence transfer, product operator formalism, and the INEPT experiment in NMR spectroscopy.

Spin Echo Formation: Fundamentals of Biomedical Imaging MOOC: Fundamentals of Biomedical Imaging: Magnetic Resonance Imaging (MRI)

Delves into the formation of spin echoes in MRI imaging and the mathematical formulation behind it, emphasizing the role of RF pulses and gradients.

Bloch equations: MR signal basics MOOC: Fundamentals of Biomedical Imaging: Magnetic Resonance Imaging (MRI)

Explores Bloch equations, MR signal basics, T₁ measurement, and signal intensity factors.

NMR Experiments: Basics and Applications