Results 71 to 80 of about 360,424 (294)

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

Advanced 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, Judith Evers, Alexandre Trotier, Manus Biggs, Madeleine M. Lowery   +4 more
wiley   +1 more source

Numerical Simulation Study on the Response of Dipole Acoustic Logging to Borehole Enlargement

Cejing jishu
Affected by factors such as the uneven distribution of in-situ stress and the development of fracture zones, borehole enlargement often occurs in Shunbei Ordovician carbonate formation, which leads to the multi-solution nature of interpretation and ...
XIAO Honglin, ZHANG Xiaocong, ZHANG Xiaoming, YANG Bo, CHE Xiaohua, WANG Qian, SHEN Li   +6 more
doaj   +1 more source

Nonlinear acoustic–gravity waves

Journal of Plasma Physics, 2009
AbstractPrevious results on nonlinear acoustic–gravity waves are reconsidered. It turns out that the mathematical techniques used are somewhat similar to those already adopted by the plasma physics community. Consequently, a future interaction between physicists in different fields, e.g. in meteorology and plasma physics, can be very fruitful.
Stenflo, L., Shukla, P.K.
openaire   +4 more sources

Single-electron transport driven by surface acoustic waves: moving quantum dots versus short barriers

, 2006
We have investigated the response of the acoustoelectric current driven by a surface-acoustic wave through a quantum point contact in the closed-channel regime.
A.M. Robinson, C. B. Sørensen, C.H.W. Barnes, C.L. Foden, G.R. Aizin, J. Bindslev Hansen, J. Cunningham, J. Cunningham, J. Cunningham, J. Ebbecke, J. Ebbecke, J. Ebbecke, J.A. Nixon, J.H. Davies, J.L. Flowers, J.M. Shilton, J.P. Pekola, K. Flensberg, K. Gloos, K. Gloos, K. Gloos, L.P. Kouwenhoven, M. Switkes, M.A. Topinka, M.A. Topinka, M.W. Keller, N.E. Fletcher, N.M. Zimmermann, P. E. Lindelof, P. Utko, P. Utko, P. Utko, S. Furuta, V. Kashcheyevs, V.I. Talyanskii   +34 more
core   +1 more source

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

Advanced 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, Naseeh Backer Kannanthodi, Alice Nicole Casling, Babar Ali, Samira Lakouraj Mansouri, Alessandro Giuseppe D'aloia, Hossein Cheraghi Bidsorkhi, Maria Sabrina Sarto   +7 more
wiley   +1 more source

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

Advanced 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, Jingguo Qu, Tonghuan Xiao, Xinyang Han, Michael Tin‐Cheung Ying   +4 more
wiley   +1 more source

Directional transmission of ultra-high frequency acoustic signals based on metamaterial structure

AIP Advances, 2019
Cell photoacoustic detection of acoustic signals has serious problems of transmission loss and difficulty in acquisition. Based on the acoustic transmission characteristics of acoustic supermaterials, the acoustic wave directional transmission model is ...
Jianning Han, Peng Yang, Jing-zhi Wu, Tao Wang, Jing Wang   +4 more
doaj   +1 more source

Surface Acoustic Wave Oscillators [PDF]

, 1990
Then: are principal advances in the field of application of surface acoustic wave (SAW) delay lines and resonators in stable microwave frequency sources in the frequency range from 100 MHz to 1 GHz and above Advances, applications and fundamental ...
Sehmisch, Dieter, Trzeba, Erich
core  

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

Advanced 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, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Acoustic rotation control [PDF]

, 1983
A system is described for acoustically controlled rotation of a levitated object, which avoids deformation of a levitated liquid object. Acoustic waves of the same wavelength are directed along perpendicular directions across the object, and with the ...
Croonquist, A. P., Elleman, D. D., Wang, T. G.   +2 more
core   +1 more source