Yongda Chen

Integrated physicochemical profiling, metabolomics and 5-lipoxygenase docking: a comparative analysis of naturally matured acacia honey versus commercial samples

Limei Li, Zhenshan Zheng, Xun Qian, Sijia Tan et autres

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A 30–34-GHz Low-Phase-Error Hybrid Phase Shifter With 360° Phase Shift Range in 65nm CMOS Technology

Weijie Lin, Yongda Chen, Jitao Zhang, Peiying Cai et autres

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A Variable-Gain Low-Noise Amplifier with Low Phase Variation Based on 65 nm CMOS

Yongda Chen, Weijie Lin, Peiying Cai, Jitao Zhang et autres

This paper presents a variable-gain low-noise amplifier (VGLNA) operating at 23 GHz using SMIC 65 nm CMOS technology. To achieve a wide gain tuning range while minimizing input/output impedance variations, a cross-summing architecture with main and auxiliary common source transistors is employed …

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Partition optimized design of a hypersonic wing model via thermal-aero-elastic coupling effects

Yuguang Bai, Yongda Chen, X. T. He, Sheng Zhang et autres

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Regional dynamic early warning model for rainfall-induced landslide in Fujian, China

Hongqiang Dou, Yongda Chen, Yongxin Sun, Chaoxu Guo

Recent advances have significantly enhanced dynamic early warning systems for rainfall-induced landslides by integrating rainfall thresholds with susceptibility mapping. However, there is still room for optimizing these models for regional-scale applications. This study introduces a dynamic early warning model in Anxi County, …

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A Low Phase Noise and Ultra-Wideband Voltage-Controlled Oscillator Based on 65nm CMOS

Peiying Cai, Tao Peng, Yongda Chen, Weijie Lin et autres

This paper presents a novel approach to realize a low phase noise ultra-wideband Voltage-Controlled Oscillator (VCO) using 65nm CMOS technology. The core circuit of the oscillator employs PMOS cross-coupled pairs to generate second harmonic signals, constituting the push-push structure. Transformer coupling technique …

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Light‐Induced Mott‐Insulator‐to‐Metal Phase Transition in Ultrathin Intermediate‐Spin Ferromagnetic Perovskite Ruthenates (Adv. Mater. 12/2023)

Ruxin Liu, Liang Si, Wei Niu, Xu Zhang et autres

Insulator–Metal Transition In article number 2211612, Zhicheng Zhong, Xuefeng Wang, and co-workers report that UV-light irradiation on perovskite-based heterostructures can drive the photocharge transfer from SrTiO3 substrates to intermediate-spin ferromagnetic SrRuO3 ultrathin films containing oxygen vacancies. As a consequence, a reversible Mott-insulator-to-metal …

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Light‐Induced Mott‐Insulator‐to‐Metal Phase Transition in Ultrathin Intermediate‐Spin Ferromagnetic Perovskite Ruthenates

Ruxin Liu, Liang Si, Wei Niu, Xu Zhang et autres

Abstract Light control of emergent quantum phenomena is a widely used external stimulus for quantum materials. Generally, perovskite strontium ruthenate SrRuO3 has an itinerant ferromagnetism with a low‐spin state. However, the phase of intermediate‐spin (IS) ferromagnetic metallic state has never been seen. …

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The Impact of Product Picture Advertisements and Product Video Advertisements on Chinese Consumer Purchase Intentions

Yongda Chen, Yiyang Han, Yuan He, Jiaqi Xu

Over the past few decades, there have been more and more forms of product advertising, and the use of product advertising has also increased.Among this, picture advertising and video advertising have become the most common ways for marketers to promote.Consumers also tend …

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Enhancement of Spin Polarization in Two-Dimensional Electron Gases at Patterned LaAlO3/SrTiO3 Interfaces

Yongda Chen, Ruxin Liu, Xu Zhang, Wenzhuo Zhuang et autres

Spin-polarized two-dimensional electron gases (2DEGs) at the interfaces of SrTiO 3 -based correlated oxides have attracted tremendous attention in electronics and spintronics. Hitherto, the transition temperature ( T C ) for such spin polarization remains very low at around 20 K, seriously …

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Evidence of the nontrivial Berry phase at γ -Al2O3/SrTiO3 heterointerfaces

Wei Niu, Zhenqi Wu, Yongda Chen, Yulin Gan et autres

The nontrivial Berry phase in correlated oxide heterostructures has been highly attractive due to the Rashba spin–orbit interactions originating from the inversion symmetry breaking at the heterointerfaces. Despite the theoretically predicated nontrivial π Berry phase in Rashba systems, its experimental detection among …

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Significant Reduction of the Dead Layers by the Strain Release in La0.7Sr0.3MnO3 Heterostructures

Yongda Chen, Xiao Yuan, Siqi Shan, Chong Zhang et autres

Great efforts have been devoted to exploring the emergent phenomena occurring in heterostructures of correlated oxides. However, the presence of both magnetic and electrical dead layers in functional oxide films generally obstructs the device functionalization and miniaturization. Here, we demonstrate an effective …

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