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Programmable Non-Volatile Photonic Analog-to-Digital Converter Based on Back-End-of-Line Compatible Phase-Change Materials.
Adv Mater
March 2025
School of Microelectronics, Fudan University, Shanghai, 200433, P. R. China.
High-performance signal processing and telecommunication systems absolutely necessitate analog-to-digital converters (ADCs) that offer extensive bandwidth, exceptional precision, and minimal power consumption, in order to efficiently convert real-world analog signals into digital signals. While current electronic ADCs are constrained by limitations such as low bandwidth, high jitter noise, susceptibility to electromagnetic interference, and excessive energy consumption, photonic ADCs present promising solutions to overcome these challenges. Here, a programmable photonic ADC is developed by integrating phase-change materials (PCMs) with silicon photonics fabricated using foundry processes.
View Article and Find Full Text PDFFiber PROES: Phase resolved optical emission spectroscopy via optical fibers for knowledge-based plasma process development and monitoring.
Rev Sci Instrum
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Chair of Applied Electrodynamics and Plasma Technology, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
High-frequency technological low-temperature plasmas play a key role in various industrial processes of high societal relevance, such as semiconductor manufacturing and gas conversion. Due to their complexity, the fundamentals of their operation are typically not understood and process development is done empirically. The continuous increase in process requirements with respect to precision and reproducibility, however, necessitates knowledge-based approaches toward process development and monitoring.
View Article and Find Full Text PDF3-D Printable Living Hydrogels as Portable Bio-energy Devices.
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Key Laboratory of Quantitative Synthetic Biology, Shenzhen Key Laboratory of Materials Synthetic Biology, Center for Materials Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
Harnessing engineered living materials for energy application represents a promising avenue to sustainable energy conversion and storage, with bio-batteries emerging as a pivotal direction for sustainable power supply. Whereas, the realization of miniaturized and portable bio-battery orchestrating off-the-shelf devices remains a significant challenge. Here, this work reports the development of a miniaturized and portable bio-battery using living hydrogels containing conductive biofilms encapsulated in an alginate matrix for nerve stimulation.
View Article and Find Full Text PDFNumerical investigation of different RF arrays for magnetic resonance guided focused ultrasound in human head.
Annu Int Conf IEEE Eng Med Biol Soc
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Magnetic resonance-guided focused ultrasound (MRgFUS) is a non-invasive and effective alternative to conventional deep-brain stimulation and radio-frequency lesioning for essential tremors and is being investigated for essential tremors, pains, and other applications. During MRgFUS treatment, FUS transducers are typically positioned at the top of the head. To precisely focus the ultrasound force or create a hot spot at the targeted area, adjustments in the transducer position are necessary.
View Article and Find Full Text PDFAdaptive cold-atom magnetometry mitigating the trade-off between sensitivity and dynamic range.
Sci Adv
February 2025
Institute of Quantum Precision Measurement, State Key Laboratory of Radio Frequency Heterogeneous Integration, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
Cold-atom magnetometers can achieve an exceptional combination of superior sensitivity and high spatial resolution. One key challenge that these quantum sensors face is improving the sensitivity within a given timeframe while preserving a high dynamic range. Here, we experimentally demonstrate an adaptive entanglement-free cold-atom magnetometry with both superior sensitivity and high dynamic range.
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