Farsi Reza, Sahin Solmaz Nergiz, Maury Mattéo, Boero Giovanni
Institute of Electrical and Micro Engineering (IEM) & Center for Quantum Science and Engineering (QSE) École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland.
Anal Chem. 2024 Sep 10;96(36):14516-14523. doi: 10.1021/acs.analchem.4c02769. Epub 2024 Aug 27.
We report on the design and characterization of a single chip integrated pulsed electron spin resonance detector operating at 9.1 GHz. The microsystem consists of an excitation microcoil, a detection microcoil, a low noise microwave preamplifier, a mixer, and an intermediate frequency (IF) amplifier. The chip area is about 0.7 mm. To exemplify its possible applications, we report the results of single pulse, Rabi nutation, Hahn echo, two echoes, Carr-Purcell, and inversion recovery echo experiments performed on 0.02 and 0.05 nL samples of α, γ-bisdiphenylene-β-phenylallyl (BDPA) and 1% BDPA in polystyrene (BDPA:PS) at room temperature. The measured spin sensitivity is about 8 × 10 spins/Hz on a sensitive volume of about 0.1 nL. The microsystem power consumption is less than 100 mW, the radio frequency (RF) input bandwidth is 8.8 to 9.8 GHz, the IF output bandwidth is DC to 350 MHz, and the deadtime is less than 30 ns.
我们报道了一种工作在9.1 GHz的单芯片集成脉冲电子自旋共振探测器的设计与特性。该微系统由一个激励微线圈、一个检测微线圈、一个低噪声微波前置放大器、一个混频器和一个中频（IF）放大器组成。芯片面积约为0.7平方毫米。为了举例说明其可能的应用，我们报告了在室温下对0.02和0.05纳升的α,γ-双亚苯基-β-苯基烯丙基（BDPA）以及聚苯乙烯中1%的BDPA（BDPA:PS）样品进行的单脉冲、拉比旋进、哈恩回波、双回波、卡尔-珀塞尔和反转恢复回波实验的结果。在约0.1纳升的灵敏体积上测得的自旋灵敏度约为8×10自旋/赫兹。该微系统功耗小于100毫瓦，射频（RF）输入带宽为8.8至9.8 GHz，中频输出带宽为直流至350 MHz，死时间小于30纳秒。
