Comprehensive analog signal processing platform enabled by acoustic charge transport in two-dimensional materials

IF 12.5 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Advances Pub Date : 2025-10-08 DOI:10.1126/sciadv.ady7476

Yueyi Sun, Siming Liu, Jiefei Zhu, Dexing Liu, Jiwei Chen, Yingjie Luo, Yihong Sun, Min Zhang, Mansun Chan, Cary Y. Yang, Changjian Zhou

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Abstract

Miniaturized, low-loss analog signal processing is crucial for next-generation wireless communication and sensing. Although two-dimensional acoustic charge transport (2D-ACT) devices integrating 2D field-effect transistors (FETs) with surface acoustic waves (SAWs) have substantial potential, previous work has been confined to dc operation, limiting real-time applications. Here, we present a hybrid platform that enables comprehensive dc and ac analog signal processing within a 2D-ACT device. By synergistically integrating 2D-FET and SAW components, our system achieves real-time subwavelength carrier monitoring and ac signal manipulation. ac measurements further elucidate mechanisms of dc acoustoelectric current generation. Notably, by controlling the phase and intensity of counter-propagating SAWs, we demonstrate analog signal addition and subtraction capabilities not previously realized in 2D-ACT devices. This platform establishes a benchmark for compact, low-loss ACT devices in ac signal processing, representing a notable advance for acoustoelectric technologies and 2D material systems.

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二维材料中声学电荷输运实现的综合模拟信号处理平台

小型化、低损耗的模拟信号处理对于下一代无线通信和传感至关重要。虽然二维声电荷输运（2D- act）器件集成了二维场效应晶体管（fet）和表面声波（saw）具有巨大的潜力，但以前的工作仅限于直流操作，限制了实时应用。在这里，我们提出了一个混合平台，可以在2D-ACT器件内实现全面的直流和交流模拟信号处理。通过协同集成2D-FET和SAW组件，我们的系统实现了实时亚波长载波监测和交流信号处理。交流测量进一步阐明了直流声电流产生的机制。值得注意的是，通过控制反传播saw的相位和强度，我们展示了以前在2D-ACT设备中未实现的模拟信号加法和减法功能。该平台为交流信号处理中紧凑、低损耗的ACT器件建立了基准，代表了声电技术和二维材料系统的显著进步。

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来源期刊

Science Advances 综合性期刊-综合性期刊

CiteScore

21.40

自引率

1.50%

发文量

1937

审稿时长

29 weeks

期刊介绍： Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.