Results 81 to 90 of about 1,814 (188)

Acoustic Wave Engineering of Lamb Wave Resonators with 2D van der Waals Floating Electrode

Advanced Materials Interfaces, Volume 12, Issue 18, September 22, 2025.
AlN‐based Lamb wave resonators integrated with 2D hBN/graphene van der Waals heterostructures achieve fr exceeding 7 GHz and enhanced electromechanical coupling. The heterostructure functions as an acoustic mirror, effectively confining acoustic energy and minimizing losses, which significantly improves the Q‐factor.
Seok Hyun Yoon, Cheul Hyun Yoon, Byoung Don Kong   +2 more
wiley   +1 more source

Temperature coefficients of crystalline-quartz elastic constants over the cryogenic range [4 K, 15 K]

, 2016
This paper brings out results of a measurement campaign aiming to determine the temperature coefficients of synthetic quartz elastic constants at liquid helium temperature.
Bon, Jérémy, Bourquin, Roger, Galliou, Serge   +2 more
core   +3 more sources

Timing of Changes in Alzheimer's Disease Plasma Biomarkers as Assessed by Amyloid and Tau PET Clocks

Annals of Neurology, Volume 98, Issue 3, Page 508-523, September 2025.
Objective The objective of this study was to evaluate the timing of change of Alzheimer's disease (AD) plasma biomarkers (Aβ42/Aβ40, p‐tau217, p‐tau181, GFAP, and NfL) from six different assay platforms, alongside established AD biomarkers, using amyloid and tau positron emission tomography (PET)‐based AD progression timelines.
Marta Milà‐Alomà, Duygu Tosun, Suzanne E. Schindler, Isabella Hausle, Kellen K. Petersen, Yan Li, Jeffrey L. Dage, Lei Du‐Cuny, Ziad S. Saad, Benjamin Saef, Gallen Triana‐Baltzer, David L. Raunig, Janaky Coomaraswamy, Michael Baratta, Emily A. Meyers, Yulia Mordashova, Carrie E. Rubel, Kyle Ferber, Hartmuth Kolb, Nicholas J. Ashton, Henrik Zetterberg, Erin G. Rosenbaugh, Martin Sabandal, Leslie M. Shaw, Anthony W. Bannon, William Z. Potter, for the Alzheimer's Disease Neuroimaging Initiative (ADNI), Foundation for the National Institutes of Health (FNIH) Biomarkers Consortium Plasma Aβ and Phosphorylated Tau as Predictors of Amyloid and Tau Positivity in Alzheimer's Disease Project Team   +27 more
wiley   +1 more source

A Gas Sensor Based on Fully Tuneable and Electrically Coupled Bulk Acoustic Wave Resonators

Proceedings
This paper reports on a gas sensor based on two bulk acoustic wave (BAW) resonators electrically coupled with a tuneable capacitor. The weak coupling strength was tuned to its optimal value (achieving maximum sensitivity) by varying the capacitance ...
Bernardo Madeira, Linlin Wang, Chen Wang, Michael Kraft   +3 more
doaj   +1 more source

BAW Resonator with an Optimized SiO₂/Ta₂O₅ Reflector for 5G Applications. [PDF]

ACS Omega, 2022
Lv L, Shuai Y, Huang S, Zhu D, Wang Y, Luo W, Wu C, Zhang W.   +7 more
europepmc   +1 more source

Design of Computer Experiments: a powerful tool for the numerical design of BAW filters [PDF]

, 2009
We apply Design of Computer Experiments methods to the simulation of piezoelectric stacks and the design of BAW resonators and filters. Through the example of DCS filters with two different technologies (Iridium and Molybdenum electrodes), we show that ...
Aid, M., Bila, S., Crécy, F. de, Giraud, S., Iborra Grau, Enrique, Reinhardt, Alexandre   +5 more
core  

RLC – модель акустического импеданса брэгговского отражателя [PDF]

, 2015
В роботі представлена розроблена авторами RLC модель бреггівського відбивача. Завдяки спрощеності структури дана модель може бути легко інтегрована в більшість сучасних САПР і дозволить з високою точністю визначати вихідні характеристики відбивача у ...
Bogdan, O., Orlov, A., Zazerin, A., Богдан, А. В., Богдан, О. В., Зазерин, А. И., Зазерін, Андрій Ігорович, Орлов, А. Т., Орлов, Анатолій Тимофійович   +8 more
core  

Analysis of the Effects of Parameters on the Performance of Resonators Based on a ZnO/SiO₂/Diamond Structure

Applied Sciences
With the development of communications technology, surface acoustic wave (SAW) and bulk acoustic wave (BAW) devices have become hotspots of the competitive research in the frequency band above GHz.
Gang Cao, Hongliang Wang, Peng Zhang
doaj   +1 more source

Passive bandpass filters for modern microwave communication systems

Физика волновых процессов и радиотехнические системы
Background. Bandpass filters are an integral part of any radio engineering systems and modern communication systems. Research and development of new passive components is due to growing need for such elements for modernization and creation of new modern ...
Aleksey S. Koigerov, Pavel A. Turalchuk, Mikhail M. Derkach, Sergey S. Andreychev   +3 more
doaj   +1 more source

Design and Synthesis of BAW Bandpass Filter Based on Inline NRN and Dangling Resonator Topology [PDF]

Radioengineering
In this paper, a novel inline network realization of non-resonating node (NRN) and dangling resonator (R) pair direct synthesis approach is presented.
C. X. Yoon, S. Soeung, S. Cheab, P. W. Wong, C. C. D. Ling   +4 more
doaj