Results 61 to 70 of about 190,981 (312)

Understanding the Effects of Conductive Polymer Electrode Coating on Recorded Neural Signals

open access: yesAdvanced Healthcare Materials, EarlyView.
Conductive polymer coatings are widely explored to improve the quality of signals recorded with chronically implanted neural electrodes, offering enhanced biocompatibility along with reduced electrode impedance. Combining computational modelling and data from PEDOT:PTS coated and PtIr electrodes in rats, we show that improvements in signal quality with
Karthik Sridhar   +4 more
wiley   +1 more source

Tunable Topological Surface States of Three-Dimensional Acoustic Crystals

open access: yesFrontiers in Physics, 2021
Topological design for band structures of artificial materials such as acoustic crystals provides a powerful tool to manipulate wave propagating in a robust and symmetry-protected way.
Hua-Shan Lai   +5 more
doaj   +1 more source

The Power Flow Angle of Acoustic Waves in Thin Piezoelectric Plates [PDF]

open access: yes, 2008
The curves of slowness and power flow angle (PFA) of quasi-antisymmetric (A0) and quasi-symmetric (S0) Lamb waves as well as quasi-shear-horizontal (SH0) acoustic waves in thin plates of lithium niobate and potassium niobate of X-,Y-, and Z-cuts for ...
Joshi, Shrinivas   +4 more
core   +1 more source

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi   +7 more
wiley   +1 more source

Circuit quantum acoustodynamics with surface acoustic waves

open access: yesNature Communications, 2017
In this work, Manenti et al. present measurements of a device in which a tuneable transmon qubit is piezoelectrically coupled to a surface acoustic wave cavity, realising circuit quantum acoustodynamic architecture.
Riccardo Manenti   +7 more
doaj   +1 more source

Surface Acoustic Wave Driven Microchannel Flow [PDF]

open access: yes, 2007
We demonstrate that the propagation of surface acoustic waves, arising from the excitation of the acoustic field on a piezoelectric crystal (lithium niobate) substrate, along the sidewalls of microchannels (50 μm or 280 μm wide and 200 μm deep ...
Friend, J. R., Tan, M. K., Yeo, L. Y.
core   +1 more source

Surface waves and surface wave devices in atmospheric acoustics [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1990
Surface waves exist above porous grounds when the surface can influence the airborne particle velocity near the ground and reduce the phase velocity of sound waves in air at the surface, thereby trapping some of the energy to remain near the surface as the wave propagates. The experimental evidence for the existence of an acoustic surface wave has been
G. A. Daigle, T. F. W. Embleton
openaire   +1 more source

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

open access: yesAdvanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang   +4 more
wiley   +1 more source

Flexible thin-film acoustic wave devices with off-axis bending characteristics for multisensing applications

open access: yesMicrosystems & Nanoengineering, 2021
Flexible surface acoustic wave (SAW) devices have recently attracted tremendous attention for their widespread application in sensing and microfluidics. However, for these applications, SAW devices often need to be bent into off-axis deformations between
Zhangbin Ji   +9 more
doaj   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

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