Results 121 to 130 of about 54,093 (284)

Ultra-low frequency photocurrent self-oscillation in strained InxGa1-xAs quantum well diodes

Ultra-low frequency photocurrent (PC) self-oscillation has been investigated in aIn0.15Ga0.85As/Al0.15Ga0.85As quantum-well (QW) diode in details as a function of temperature,excitation power and wavelength.
藤原, 賢三, Sano, N, Tanigawa, K, Fujiwara, Kenzo, フジワラ, ケンゾウ   +4 more
core  

Development of Nanoflare Nanosensors for Monitoring Cellular Insulin mRNA in Beta Cells and Islets

Advanced Materials Technologies, EarlyView.
This study presents the design and application of In2‐NF probes for detecting insulin mRNA in beta cells and islets. Using spherical nucleic acid‐coated gold nanoparticles, the probes offer strong fluorescent signals upon hybridization. Their performance is validated across 2D and 3D cultures and rat islets, demonstrating sensitive, real‐time mRNA ...
Yana Hu, Qizheng Zhang, Tianli Hu, Juewen Liu, Hongxing Fu, Xin Zhao, Zijiang Yang, Chenjie Xu   +7 more
wiley   +1 more source

Synthesis of Electronic Frequency Tuning Units for Narrowband Ultra-Low Noise Oscillators with Surface Acoustic Waves Resonators

Известия высших учебных заведений России: Радиоэлектроника
Introduction. Modern radio engineering systems impose strict requirements on the stability of the frequency of microwave oscillation sources (microwave generators) included in their composition. However, microwave oscillators (on dielectric resonators or
V. A. Loiko, A. R. Safin, A. A. Boburkov
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

A Low-Power Top-Tail Inductive Filtered LC-VCO With Wide Tuning and Ultra-Low Phase Noise for Ku-Band Applications

IEEE Access
Accurate and stable local oscillation is essential in high-speed RF communication systems, imposing strict performance requirements on LC-voltage-controlled oscillators (LC-VCOs).
Dereddy Anuradha, Abdul Majeed Kottampara Kuppalath, Vasudeva Reddy Kuppireddy   +2 more
doaj   +1 more source

Characterization of Droplet Formation in Ultrasonic Spray Coating: Influence of Ink Formulation Using Phase Doppler Anemometry and Machine Learning

Advanced Materials Technologies, EarlyView.
This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding, Danny E. P. Vanpoucke, Yunus T. Aksoy, Tobias Corthouts, Maria R. Vetrano, Wim Deferme   +5 more
wiley   +1 more source

Optoelectronic Oscillators: Progress from Classical Designs to Integrated Systems

Photonics
Optoelectronic oscillators (OEOs) have emerged as indispensable tools for generating low-phase-noise microwave and millimeter-wave signals, which are critical for a variety of high-performance applications.
Qidi Liu, Jiuchang Peng, Juanjuan Yan
doaj   +1 more source

Altered low-frequency oscillation amplitude of resting state-fMRI in patients with discogenic low-back and leg pain

, 2018
Fuqing Zhou,1,2 Lili Gu,3 Shunda Hong,1,2 Jiaqi Liu,1,2 Jian Jiang,1,2 Muhua Huang,1,2 Yong Zhang,3 Honghan Gong1,2 1Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi, People’s Republic of China ...
Jiang J, Liu J, Zhang Y, Gu L, Huang M, Zhou F, Gong H, Hong S   +7 more
core  

Recent Advances of Slip Sensors for Smart Robotics

Advanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang, Liao Wu, Shuai He, Zhao Sha, Yuwan Huang, Shuying Wu, Dewei Chu, Chun H. Wang, Shuhua Peng   +8 more
wiley   +1 more source

Improved DC and RF Characteristics of GaN-Based Double-Channel HEMTs by Ultra-Thin AlN Back Barrier Layer

Micromachines
In order to improve the off-state and breakdown characteristics of double-channel GaN HEMTs, an ultra-thin barrier layer was chosen as the second barrier layer.
Qian Yu, Chunzhou Shi, Ling Yang, Hao Lu, Meng Zhang, Xu Zou, Mei Wu, Bin Hou, Wenze Gao, Sheng Wu, Xiaohua Ma, Yue Hao   +11 more
doaj   +1 more source