Biller Joshua R, McPeak Joseph E
TDA Research, Inc., Golden, CO 80433 USA.
University of Denver, Denver, CO 80210 USA.
Appl Magn Reson. 2021;52(8):1113-1139. doi: 10.1007/s00723-020-01304-z. Epub 2021 Jan 24.
This review is inspired by the contributions from the University of Denver group to low-field EPR, in honor of Professor Gareth Eaton's 80th birthday. The goal is to capture the spirit of innovation behind the body of work, especially as it pertains to development of new EPR techniques. The spirit of the DU EPR laboratory is one that never sought to limit what an EPR experiment could be, or how it could be applied. The most well-known example of this is the development and recent commercialization of rapid-scan EPR. Both of the Eatons have made it a point to remain knowledgeable on the newest developments in electronics and instrument design. To that end, our review touches on the use of miniaturized electronics and applications of single-board spectrometers based on software-defined radio (SDR) implementations and single-chip voltage-controlled oscillator (VCO) arrays. We also highlight several non-traditional approaches to the EPR experiment such as an EPR spectrometer with a "wand" form factor for analysis of the OxyChip, the EPR-MOUSE which enables non-destructive in situ analysis of many non-conforming samples, and interferometric EPR and frequency swept EPR as alternatives to classical high Q resonant structures.
本综述受丹佛大学团队对低场电子顺磁共振（EPR）所做贡献的启发，以庆祝加雷思·伊顿教授80岁生日。目标是捕捉这一系列工作背后的创新精神，尤其是与新EPR技术发展相关的方面。丹佛大学EPR实验室的精神在于从不试图限制EPR实验可以是什么样，或者它可以如何应用。这方面最著名的例子就是快速扫描EPR的开发及其近期商业化。伊顿夫妇都注重了解电子学和仪器设计的最新进展。为此，我们的综述涉及了小型化电子设备的使用以及基于软件定义无线电（SDR）实现和单芯片压控振荡器（VCO）阵列的单板光谱仪的应用。我们还重点介绍了几种非传统的EPR实验方法，例如用于分析氧芯片的具有“魔杖”外形的EPR光谱仪、能够对许多不合格样品进行无损原位分析的EPR-MOUSE，以及作为经典高Q共振结构替代方案的干涉EPR和频率扫描EPR。
