Results 111 to 120 of about 75,899 (299)

Mimicking Silent Synapse Recruitment: A SiOx/Cu‐Pancake Memristive Device For Analog Neuromorphic Computing

Advanced Functional Materials, EarlyView.
Electroforming‐free TiN/SiOx/Cu/SiOx/TiN memristive devices exploit pancake‐like Cu nanoparticles embedded in a SiOx double layer to create a heterogeneous Schottky‐barrier landscape. Under bias, oxygen‐vacancy redistribution progressively lowers local barriers and recruits initially inactive Cu‐PC pathways into a parallel conduction ensemble, enabling
Rouven Lamprecht, Ole Gronenberg, Sahitya Yarragolla, Tobias Gergs, Richard Marquardt, Victor Witte, Jürgen Carstensen, George Popkirov, Jan Trieschmann, Lorenz Kienle, Hermann Kohlstedt   +10 more
wiley   +1 more source

Design of time-frequency distributions for amplitude and if estimation of multicomponent signals [PDF]

, 2001
This paper presents a new class of time-frequency distributions (TFDs) suitable for efficient amplitude and instantaneous frequency (IF) estimation of mono- and multicomponent FM signals.
Boashash, Boualem, Hussain, ZM, Boashash, B, Hussain, Zahir   +3 more
core  

Order Spectrum Analysis for Bearing Fault Detection via Joint Application of Synchrosqueezing Transform and Multiscale Chirplet Path Pursuit

Shock and Vibration, 2016
Order tracking has become one of the most effective methods for fault detection of rotating machinery under the time-varying shaft speed conditions.
Jiesi Luo, Shaohui Zhang, Mingen Zhong, Zusheng Lin   +3 more
doaj   +1 more source

3D‐Printable, Biodegradable, and Conductive/Piezoionic Hydrogel ‘E‐Skin’ With Robust Antibacterial Properties for Wound Healing and Wireless Human‐Machine Interface Sensing

Advanced Functional Materials, EarlyView.
A multifunctional MXene‐integrated GelMA/alginate hydrogel reinforced with TEMPO‐modified nanocellulose is engineered via dynamic covalent, ionic, and hydrogen bonding. The resulting piezoelectric, adhesive, antimicrobial, and 3D‐printable patch enables motion sensing and accelerates wound healing by promoting keratinocyte migration and collagen ...
Myoungjoon Jeon, Sayan Deb Dutta, Md. Moniruzzaman, Jeong Man An, Youjin Seol, Gyuhan Son, Sung Ha Jo, Hyun Chang Jung, Beom‐Soo Shin, Jongsung Kim, Yong‐kyu Lee, Ki‐Taek Lim   +11 more
wiley   +1 more source

Performance Comparison of Time-Frequency Distributions for Estimation of Instantaneous Frequency of Heart Rate Variability Signals

Applied Sciences, 2017
The instantaneous frequency (IF) of a non-stationary signal is usually estimated from a time-frequency distribution (TFD). The IF of heart rate variability (HRV) is an important parameter because the power in a frequency band around the IF can be used ...
Nabeel Ali Khan, Peter Jönsson, Maria Sandsten   +2 more
doaj   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Adaptive instantaneous frequency estimation of multicomponent signals based on linear time-frequency transforms [PDF]

, 2019
The use of linear time-frequency (TF) representa-tions as instantaneous frequency (IF) estimators arises in various fundamental disciplines, mainly thanks to their simplicity and immunity against interfering cross-terms.
Corazza G. E., Pojani G., Abdoush Y.
core   +1 more source

Understanding Harmonic Structures Through Instantaneous Frequency. [PDF]

IEEE Open J Signal Process, 2022
Fabus MS, Woolrich MW, Warnaby CW, Quinn AJ.   +3 more
europepmc   +1 more source

Biomimetic Microfractals Based Flexible Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
A leaf‐skeleton‐based microfractal architecture is integrated with guided CuNW networks and biomimetic triboelectric polymer layers, enabling breathable, flexible, and material‐efficient triboelectric nanogenerators. The resulting system combines enhanced charge generation and charge transport, offering potential for next‐generation self‐powered ...
Amit Barua, Mislav Matić, Ana‐Marija Pitner, Rituporn Gogoi, Aman Kumar, Mirko Poljak, Anastasia Koivikko, Vipul Sharma   +7 more
wiley   +1 more source

Retracted: Automatic Music Classification Model Based on Instantaneous Frequency and CNNs in High Noise Environment. [PDF]

J Environ Public Health, 2023
Environmental And Public Health JO.
europepmc   +1 more source