Nicasy Ruben, Huinink Henk, Erich Bart, Olaf Adan
Applied Physics Department, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
Organization of Applied Scientific Research, TNO The Netherlands, P.O. Box 49, 2600 AA Delft, The Netherlands.
Polymers (Basel). 2022 Feb 18;14(4):798. doi: 10.3390/polym14040798.
Reaction and transport processes in thin layers of between 10 and 1000 µm are important factors in determining their performance, stability and degradation. In this review, we discuss the potential of high-gradient Nuclear Magnetic Resonance (NMR) as a tool to study both reactions and transport in these layers spatially and temporally resolved. As the NMR resolution depends on gradient strength, the high spatial resolution required in submillimeter layers can only be achieved with specially designed high-gradient setups. Three different high-gradient setups exist: STRAFI (STRay FIeld), GARField (Gradient-At-Right-angles-to-Field) and MOUSE (MObile Universal Surface Explorer). The aim of this review is to provide a detailed overview of the three techniques and their ability to visualize reactions and transport processes using physical observable properties such as hydrogen density, diffusion, T1- and T2-relaxation. Finally, different examples from literature will be presented to illustrate the wide variety of applications that can be studied and the corresponding value of the techniques.
10至1000微米薄层中的反应和传输过程是决定其性能、稳定性和降解的重要因素。在本综述中，我们讨论了高梯度核磁共振（NMR）作为一种工具在空间和时间上解析这些层中反应和传输的潜力。由于NMR分辨率取决于梯度强度，亚毫米层所需的高空间分辨率只能通过专门设计的高梯度装置来实现。存在三种不同的高梯度装置：STRAFI（散逸场）、GARField（与场成直角的梯度）和MOUSE（移动通用表面探测器）。本综述的目的是详细概述这三种技术及其使用诸如氢密度、扩散、T1和T2弛豫等物理可观测特性来可视化反应和传输过程的能力。最后，将展示文献中的不同示例，以说明可以研究的广泛应用以及这些技术的相应价值。
