Results 111 to 120 of about 65,747 (300)

The Vegan Villain Sets Out to The End of Summer: Functionalized Coatings as Biohybrid UV‐Sensors

open access: yesAdvanced Materials Interfaces, EarlyView.
This study introduces biohybrid coatings incorporating E. coli biomass expressing photoconvertible fluorescent proteins as UV‐A responsive elements. Upon irradiation at 400 nm, the coatings exhibit an irreversible fluorescence shift from green to red within 15 min. Notably, the photoconversion capability is retained after >1 year of storage.
Amelie Skopp   +3 more
wiley   +1 more source

Arbitrarily fast delayed signal cancellation PLL for grid‐integration of renewable energy sources

open access: yesIET Renewable Power Generation
Integrating renewable energy sources into an unbalanced distribution network requires fast and accurate extraction of fundamental frequency positive‐ and negative‐sequence components from the unbalanced three‐phase grid voltage signals. For this purpose,
Hafiz Ahmed   +2 more
doaj   +1 more source

Shuttle GPS R/PA evaluation analysis and performance tradeoff study [PDF]

open access: yes
Primary responsibility was understanding and analyzing the various GPS receiver functions as they relate to the shuttle environment. These receiver functions included acquisition properties of the sequential detector, acquisition and tracking properties ...
Booth, R. W. D., Lindsey, W. C.
core   +1 more source

A phase-locked frequency divide-by-3 optical parametric oscillator

open access: yes, 2000
Accurate phase-locked 3:1 division of an optical frequency was achieved, by using a continuous-wave (cw) doubly resonant optical parametric oscillator.
Clairon, A.   +4 more
core   +1 more source

Direct Ink Writing 3D Printing of Recyclable and Thermally Stable Vitrimers

open access: yesAdvanced Materials Technologies, EarlyView.
Vitrimers hold great promise in additive manufacturing as defect‐insensitive, repairable, and recyclable feedstocks. A thin‐film additively manufactured process is developed for a high‐performance vitrimer that is difficult to process traditionally.
Louis O. Vaught   +2 more
wiley   +1 more source

An adaptive gain phase‐locked loop for position sensorless control of permanent magnet synchronous motor drives

open access: yesIET Electric Power Applications
In view of the cost and reliability issues caused by mechanical position sensors, position sensorless control (PSC) of permanent magnet synchronous motors (PMSMs) has received widespread attention. A series of rotor position estimation (RPE) schemes have
Pengcheng Han   +4 more
doaj   +1 more source

A comparison of methods for DPLL loop filter design [PDF]

open access: yes
Four design methodologies for loop filters for a class of digital phase-locked loops (DPLLs) are presented. The first design maps an optimum analog filter into the digital domain; the second approach designs a filter that minimizes in discrete time ...
Aguirre, S.   +3 more
core   +1 more source

4D Printing of Multimaterial Flexible Magneto‐Active Polymers

open access: yesAdvanced Materials Technologies, EarlyView.
Magneto‐active polymers are 3D‐printed with tunable mechanical and magnetic properties using both superparamagnetic and hard ferromagnetic fillers. Nano‐CT imaging reveals the spatial distribution of particles within the matrix. Programmable magnetization patterns and soft, flexible architectures enable responsive actuation, offering exciting ...
Naji Tarabay   +6 more
wiley   +1 more source

Mechanical Fatigue in Liquid‐Metal Interconnects: Failure Mechanism Analysis and Validation of Improvement Strategies

open access: yesAdvanced Materials Technologies, EarlyView.
Multi‐million cycle reliability for liquid metal stretchable electronics is achieved through a continuous cycle of mechanical testing, failure mode and mechanism analysis and implementing subsequent mitigation strategies. ABSTRACT Stretchable electronics that combine mechanical compliance with reliable electrical performance are essential for ...
Lennert Purnal   +8 more
wiley   +1 more source

A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT

open access: yes机车电传动
In the traction drive control system of electric locomotives and rolling stock, the grid-side converter obtains phase information through a phase-locked loop and carries out precise control.
CHEN Zhibo   +4 more
doaj  

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