Results 81 to 90 of about 144,693 (302)
Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives
Advanced Materials, EarlyView.Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi +4 more
wiley +1 more source
مهندسی مخابرات جنوبThis paper comprehensively investigates how the control voltage settles in Voltage Controlled Oscillators (VCO) by considering all non-ideal factors in phase lock loop circuits. Also, the different structures of the phase detector and their effect on the
Reihaneh Nazaraghaei +2 more
doaj
Third-order phase-locked loop receiver [PDF]
, 1974 Third-order extension to present second-order systems extends their Doppler tracking capabilities. It widens receiver pull-in range, decreases pull-in time, lowers voltage-controlled oscillator (VCO) noise (determining when no signal is present), and ...
Crow, R. B., Tausworthe, R. C.
core +1 more source
Advanced Materials, EarlyView.A neuromorphic computing system exploiting opto‐ionic modulation in lead halide perovskite microcrystals demonstrates high‐dimensional reservoir dynamics with diffraction‐limited node resolution. Leveraging ultrafast excited‐state interactions, it achieves efficient computation (800 pJ/node‐operation), robustly distinguishing 4‐bit pulse sequences ...
Philipp Kollenz +7 more
wiley +1 more source
Analysis of a first order phase locked loop in the presence of Gaussian noise [PDF]
A first-order digital phase locked loop is analyzed by application of a Markov chain model. Steady state loop error probabilities, phase standard deviation, and mean loop transient times are determined for various input signal to noise ratios.
Blasche, P. R.
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Bandwidth controller for phase-locked-loop [PDF]
, 1992 A phase locked loop utilizing digital techniques to control the closed loop bandwidth of the RF carrier phase locked loop in a receiver provides high sensitivity and a wide dynamic range for signal reception. After analog to digital conversion, a digital
Brockman, Milton H.
core +1 more source
Peptide‐Induced Ferroelectricity in Charge‐Transfer Supramolecular Materials
Advanced Materials, EarlyView.Bio‐inspired supramolecular charge‐transfer amphiphiles self‐assemble into nanoribbons in water, where peptide chirality‐induced symmetry breaking generates robust ferroelectricity across multiple systems. These water‐processable organic ferroelectrics also enhance neuronal outgrowth and electrophysiological maturity, offering a versatile strategy for ...
James V. Passarelli +15 more
wiley +1 more source
An Improved Single Phase-locked Loop Based on Synchronous Reference Frame
Kongzhi Yu Xinxi Jishu, 2019 Accurate tracking of phase angle, frequency and amplitude of the utility voltage is essential to ensure correct operation of grid connected inverters. The commonly used single phase-locked loop(SPLL) has poor dynamic characteristics due to the problem of
TANG Jianyu +4 more
doaj
An Efficient Phase-Locked Loop for Distorted Three-Phase Systems
Energies, 2017 This paper proposed an efficient phase-locked loop (PLL) that features zero steady-state error of phase and frequency under voltage sag, phase jump, harmonics, DC offsets and step-and ramp-changed frequency. The PLL includes the sliding Goertzel discrete
Yijia Cao +4 more
doaj +1 more source
Theoretical Upper and Lower Limits for Normalized Bandwidth of Digital Phase-Locked Loop in GNSS Receivers. [PDF]
Sensors (Basel), 2023 Song YJ, Pany T, Won JH.
europepmc +1 more source