14 citations · 21 across the 11 of their papers we have counts for
14 papers
Lithium Niobate Surface-Acoustic-Wave Resonator for Very-High-Frequency Isolated Power Conversion
Liyang Jin, Zhiyang Cao, Zichen Xi +4
Piezoelectric devices offer a promising magnetic-free alternative for high-frequency power electronics, enabling compact energy transfer with inherent galvanic isolation. Here we d…
Cross-platform frequency-domain physical neural networks with identical models and parameters
Zichen Xi, Jun Ji, Liyang Jin +3
Frequency-domain physical neural networks (PNNs) have emerged as a promising analog computing paradigm, achieving a reduced number of devices, enhanced robustness, and high inferen…
Motional-Current-Sensing Method and Simplified Closed-Loop Control Strategy for Piezoelectric-Resonator-based DC-DC Converters
Zhiyang Cao, Linbo Shao, Liyan Zhu
Piezoelectric resonators (PRs) have been seen as a competitive alternative to magnetic components. In PR-based converters, the motional current (in the LC series branch of the equi…
Nonlinear exceptional points in an integrated acoustic-wave oscillator for longwave infrared sensing
Linbo Shao, Zichen Xi, Zengyu Cen +8
Exceptional points (EP) featuring enhanced responsivity and rich dynamics have attracted extensive attentions in device developments and sensing applications. However, it remains d…
Magnet-Free Nonreciprocal frequency conversion using Sequential Temporal modulation: Theory and Simulations
Arya G. Pour, Jun Ji, Linbo Shao
Nonreciprocal conversion is essential for protecting sources and enabling unidirectional signal routing in photonic, phononic, electronics, and quantum systems, yet conventional im…
Low-loss phononic integrated circuits based on a silicon nitride-lithium niobate platform
Jun Ji, Joseph G Thomas, Zichen Xi +7
Microwave-frequency acoustic waves in solids have emerged as a versatile platform for both classical and quantum applications. While phononic integrated devices and circuits are be…
Resonance-enhanced integrated acousto-optic beam steering
Yue Yu, Qixuan Lin, Shucheng Fang +8
Optical beam steering is a key technology for free-space optical communication, sensing, and imaging. Mechanical beam steering systems suffer from limited scanning speed and bulky…
Microwave-acoustic-based isolated gate driver for power electronics
Liyang Jin, Zichen Xi, Joseph G. Thomas +6
Electrical isolation is critical to ensure safety and minimize electromagnetic interference (EMI), yet existing methods struggle to simultaneously transmit power and signals throug…
On-chip cavity electro-acoustics using lithium niobate phononic crystal resonators
Jun Ji, Joseph G. Thomas, Zichen Xi +7
Mechanical systems are pivotal in quantum technologies because of their long coherent time and versatile coupling to qubit systems. So far, the coherent and dynamic control of giga…
Injection locking of GHz-frequency surface acoustic wave phononic crystal oscillator
Zichen Xi, Hsuan-Hao Lu, Jun Ji +4
Low-noise gigahertz (GHz) frequencies sources are essential for applications in signal processing, sensing, and telecommunications. Surface acoustic wave (SAW) resonator-based osci…
Room-temperature mid-infrared detection using metasurface-absorber-integrated phononic crystal oscillator
Zichen Xi, Zengyu Cen, Dongyao Wang +9
Mid-infrared (MIR) detectors find extensive applications in chemical sensing, spectroscopy, communications, biomedical diagnosis and space explorations. Alternative to semiconducto…
Optical multi-beam steering and communication using integrated acousto-optics arrays
Qixuan Lin, Shucheng Fang, Yue Yu +4
Optical beam steering enables optical detection and imaging in macroscopic or microscopic scales and long-range communication over free space. It underpins numerous optical applica…
Frequency-domain Parallel Computing Using Single On-Chip Nonlinear Acoustic-wave Device
Jun Ji, Zichen Xi, Bernadeta R. Srijanto +4
Multiply-accumulation (MAC) is a crucial computing operation in signal processing, numerical simulations, and machine learning. This work presents a scalable, programmable, frequen…
Low-phase-noise surface-acoustic-wave oscillator using an edge mode of a phononic band gap
Zichen Xi, Joseph G. Thomas, Jun Ji +7
Low-phase-noise microwave-frequency integrated oscillators provide compact solutions for various applications in signal processing, communications, and sensing. Surface acoustic wa…