Results 91 to 100 of about 109,088 (302)

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Total Harmonic Distortion of a Piezoelectric MEMS Loudspeaker in an IEC 60318-4 Coupler Estimation Using Static Measurements and a Nonlinear State Space Model. [PDF]

Micromachines (Basel), 2021
Liechti R, Durand S, Hilt T, Casset F, Poulain C, Le Rhun G, Pavageau F, Kuentz H, Colin M.   +8 more
europepmc   +1 more source

An experimental verification of the binary method for three-phase voltage source inverter [PDF]

, 2005
The purpose of this study is to investigate the characteristics of the Binary method through experimentation. By resolving the maximum voltage conversion factor, effect of switching frequency, harmonic elimination, total harmonic distortion and ...
Pang, Shen Yee
core  

Phasor-Based Assessment for Harmonic Sources in Distribution Networks [PDF]

, 2020
Phasor-based interdependencies of multiple harmonic sources, especially Distributed Energy Resources, on distribution networks are analyzed in this paper. A new index, Phasor Harmonic Index (IPH), is proposed by the authors.
Arghandeh, R., Broadwater, R. P., Centeno, V., Cheng, D., Jung, J., Onen, A. Onen   +5 more
core  

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

Advanced Materials, EarlyView.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi, Jimin Park, Won Jun Song, Soohwan An, Seonggyu Choe, Byeong‐Rak Keum, Min Young Kim, Dae Hee Hwang, Young‐Geun Park, Sung‐Won Kim, Sangyul Baik, Gwang‐Bum Im, Younghoon Lee   +12 more
wiley   +1 more source

Harmonics Mitigation of Industrial Power System Using Passive Filters [PDF]

Mehran University Research Journal of Engineering and Technology, 2012
With the development of modern industrial technology a large number of non-linear loads are used in power system, which causes harmonic distortion in the power system. At the same time the power quality and safe operation becomes inferior.
Zubair Ahmed Memon, Mohammad Aslam Uquaili, Mukhtiar Ali Unar   +2 more
doaj  

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Microcontroller Based Variable Frequency Power Inverter [PDF]

, 2007
The variable frequency inverters have been used in wide applications, such as speed control of induction motors. The variable speed operation of a single phase and three-phase induction motors suffer from large harmonic and limited speed range. Therefore,
A. Ahmed, Khalid Ali Madi
core  

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

Advanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang, Jiaqi Zhang, Mei Cui, Wei Qi, Renliang Huang, Rongxin Su, Kai Zhang   +6 more
wiley   +1 more source

Desain Inverter Tiga Fasa dengan Minimum Total Harmonic Distortion Menggunakan Metode SPWM

Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2014
Salah satu elemen penting dalam proses konversi energi listrik yaitu inverter, dimana fungsinya yaitu mengkonversi tegangan dan arus searah menjadi tegangan dan arus bolak balik.
Lalu Riza Aliyan, Rini Nur Hasanah, M. Aziz Muslim   +2 more
doaj   +1 more source