Results 71 to 80 of about 54,094 (197)

Bulk wave transmission by a multistrip coupler (MSC)

Archives of Acoustics, 2014
Multistrip coupler (MSC) is a component of SAW devices that couples surface acoustic waves (SAWs) propagating in two acoustic channels on piezoelectric substrate.
E. DANICKI
doaj  

Room-temperature ammonia sensor based on ZnO nanorods deposited on ST-cut quartz surface acoustic wave devices [PDF]

, 2017
Using a seed layer-free hydrothermal method, ZnO nanorods (NRs) were deposited on ST-cut quartz surface acoustic wave (SAW) devices of ammonia sensing at room-temperature.
Fu, Yong Qing, Guo, Yuanjun, Li, Wei, Ma, Jin-Yi, Tang, Yong-Liang, Wang, Lu, Zu, Xiao-Tao   +6 more
core   +1 more source

Performance of a glider‐mounted multifrequency echosounder for measuring the vertical distribution and abundance of large pelagic copepods

Limnology and Oceanography: Methods, EarlyView.
Abstract The difficulty of sampling zooplankton communities in situ has driven advancements in autonomous, remote sensing technology. The goal of this paper was to perform a gear comparison study testing the performance of one such piece of technology—a glider‐mounted four‐frequency echosounder—against traditional shipboard methods of measuring ...
Delphine Mossman, Joseph D. Warren, Natasha J. Hynes, Kimberley T. A. Davies   +3 more
wiley   +1 more source

Modeling and simulation of the influence mechanism of ice accretion on SAW propagation

AIP Advances
Icing causes instantaneous attenuation of surface acoustic wave (SAW), which can be leveraged for fast and highly sensitive detection of ice accretion. However, the specific mechanism of acoustic attenuation during the icing process is unclear, leading ...
Zheng Zhao, Yining Yin, Baile Cui, Wen Wang   +3 more
doaj   +1 more source

Phononic band structure engineering for high-Q gigahertz surface acoustic wave resonators on lithium niobate

, 2019
Phonons at gigahertz frequencies interact with electrons, photons, and atomic systems in solids, and therefore have extensive applications in signal processing, sensing, and quantum technologies.
Gadalla, M. N., Hu, Evelyn, Lai, Keji, Loncar, Marko, Maity, Smarak, Puma, Eric, Shams-Ansari, Amirhassan, Shao, Linbo, Sohn, Young-Ik, Wang, Cheng, Wu, Lue, Zhang, Mian, Zheng, Lu   +12 more
core   +1 more source

Comparing the In‐Plane Shear Behavior of Glass Fiber‐Reinforced and Carbon Fiber‐Reinforced Polymer Laminates With the Same Epoxy Matrix System in ±45° Tensile Tests

Polymer Composites, EarlyView.
Schematic illustration of ±45° tensile testing, including detection of first‐ply failure (FPF) by optical crack detection and acoustic emission monitoring, comparison of FPF values with ASTM D3518 and D3039 criteria, and resulting ply level stress states at FPF for GF‐ and CF‐epoxy laminates.
Maria Gfrerrer, Vasco D. C. Pires, Andreas J. Brunner, Clara Schuecker, Gerald Pinter   +4 more
wiley   +1 more source

Experimental Investigation of Moisture Movement During Freeze–Thaw Cycles and Its Effect on Physical Rock Weathering in Low‐Porosity Alpine Limestone

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The progressive weakening of alpine rockwalls through subcritical cracking, driven by repeated low‐magnitude stress processes, plays a key role in alpine rock weathering. Laboratory studies using acoustic emission (AE) monitoring have shown that thermal stresses from freeze–thaw cycling induce crack propagation, with recent work highlighting ...
Andrew Mitchell, Oliver Sass
wiley   +1 more source

Engineered Gravel Trench Hyporheic Exchange to Create Cold‐Water Thermal Refuges

River Research and Applications, EarlyView.
ABSTRACT Warming rivers are driving a loss or fragmentation of cold‐water habitat and providing the impetus to develop proactive thermal management approaches to maintain suitable habitat in rivers. One innovative approach is through the creation of cold‐water thermal refuges during periods of thermal stress for aquatic species.
Kathryn A. Smith, Edmund A. Halfyard, Christa Kelleher, Barret L. Kurylyk   +3 more
wiley   +1 more source

A numerical investigation of a piezoelectric surface acoustic wave interaction with a one-dimensional channel

, 2006
We investigate the propagation of a piezoelectric surface acoustic wave (SAW) across a GaAs/Al$_X$Ga$_{1-X}$As heterostructure surface, on which there is fixed a metallic split-gate.
B. A. Auld, C. H. W. Barnes, H. Matthews, H. P. Langtangen, H. P. Langtangen, J. Ebbecke, J. M. Shilton, M. Kataoka, O. Zienkiewicz, S. Adachi, S. Rahman, T. Sogawa, W. F. Gale   +12 more
core   +1 more source

Micro‐transitions and work identity: The case of academic entrepreneurs

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary This paper examines how academic entrepreneurs—scientists who found research‐based startups while remaining in academia—construct and sustain their professional identities amid frequent transitions between academic and entrepreneurial roles.
Marouane Bousfiha, Henrik Berglund
wiley   +1 more source