Results 51 to 60 of about 10,921,507 (275)

Projeto de um circuito divisor de frequência de ultra-baixo consumo de potência [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia ElétricaEsta dissertação apresenta o projeto de um circuito Prescaler Dual-Modulus 8/9 (PDM), projetado para a tecnologia TSMC 0 ...
Giusti, Gustavo Buchweitz
core  

Vibration Analysis and Optimal Control of Hydraulic Turbine Based on Sliding Mode Control Strategy

IEEE Access
The turbine generator unit plays a very important role in maintaining the stability of the power system and improving the quality of power. However, hydropower units will bring the risk of low-frequency oscillation or ultra-low frequency oscillation to ...
Xiaoping Huang, Yaqiong Zhang, Wenzhe Huang   +2 more
doaj   +1 more source

Design methodology of a frequency up-converting energy harvester based on dual-cantilever and pendulum structures

AIP Advances, 2019
Mechanical frequency up-conversion is a technique whereby a high-frequency oscillation is induced from a low-frequency source and aims to address inherent problems in low frequency vibration energy harvesting.
Yipeng Wu, Jinhao Qiu, Fumio Kojima, Hongli Ji, Weitai Xie, Shengpeng Zhou   +5 more
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Summer snow extent heralding of the winter North Atlantic Oscillation [PDF]

, 2003
[1] Winter climate over the North Atlantic and European sector is modulated by the North Atlantic Oscillation (NAO). We find that the summer extent of snow cover over northern North America and northern Eurasia is linked significantly (p < 0.01) to the ...
Saunders, MA, Qian, BD, Lloyd-Hughes, B
core  

Ultra-low-power second-order nonlinear optics on a chip

, 2021
Second-order nonlinear optical processes are used to convert light from one wavelength to another and to generate quantum entanglement. Creating chip-scale devices to more efficiently realize and control these interactions greatly increases the reach of ...
Christopher J. Sarabalis (14383206), Jatadhari Mishra (10886025), Amir H. Safavi-Naeini (14357847), Hubert S. Stokowski (14366091), Vahid Ansari (11979837), Jason F. Herrmann (14383386), Marc Jankowski (8043689), Carsten Langrock (5585486), Martin M. Fejer (9746343), Timothy P. McKenna (14362434)   +9 more
core   +1 more source

Analog/RF Performance Investigation of Dopingless FET for Ultra-Low Power Applications

IEEE Access, 2019
In this paper, we investigated the performance of a dopingless (DL) double gate fieldeffect transistor (DL-DGFET) for ultra-low power (ULP) analog/RF applications. It is observed that the source/drain metal electrode work-function engineering in DL-DGFET
Ankit Sirohi, Chitrakant Sahu, Jawar Singh   +2 more
doaj   +1 more source

Mono‐Material Polydisulfides for Pressure Sensitive Adhesive Tapes With Closed‐Loop Recyclability

Advanced Functional Materials, EarlyView.
A high‐performance pressure‐sensitive adhesive (PSA) tape is developed where both the adhesive layer and plastic backing layer can be recycled back to monomer in a closed‐loop cycle. Both layers of the tape are composed of analogous polydisulfide copolymers using only two unique monomers, thus giving it a mono‐material design and enabling recycling of ...
Woojung Ham, Tyler M. Witt, Charles M. Hui, Joshua C. Worch   +3 more
wiley   +1 more source

Investigation of a Novel Ultra-Low-Frequency Rotational Energy Harvester Based on a Double-Frequency Up-Conversion Mechanism

Micromachines, 2023
Due to their lack of pollution and long replacement cycles, piezoelectric energy harvesters have gained increasing attention as emerging power generation devices. However, achieving effective energy harvesting in ultra-low-frequency (
Ning Li, Hu Xia, Chun Yang, Tao Luo, Lifeng Qin   +4 more
doaj   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source