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A novel method for detecting intracranial pressure changes by monitoring cerebral perfusion via electrical impedance tomography.
Fluids Barriers CNS
January 2025
Department of Biomedical Engineering, Air Force Medical University, Xi'an, China.
Background: Acute and critical neurological diseases are often accompanied with elevated intracranial pressure (ICP), leading to insufficient cerebral perfusion, which may cause severe secondary lesion. Existing ICP monitoring techniques often fail to effectively meet the demand for real-time noninvasive ICP monitoring and warning. This study aimed to explore the use of electrical impedance tomography (EIT) to provide real-time early warning of elevated ICP by observing cerebral perfusion.
View Article and Find Full Text PDFHigh throughput cell stiffness measurement via multiplexed impedance sensors.
Biosens Bioelectron
January 2025
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, United States; The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, United States; Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, United States. Electronic address:
Since physiological and pathological events change the mechanical properties of cells, tools that rapidly quantify such changes at the single-cell level can advance the utility of cell mechanics as a label-free biomarker. We demonstrate the capability to probe the population-level elastic modulus and fluidity of MDA-MB-231 cells at a throughput of up to 50 cell/second within a portable microchip. Our sensing scheme adapts a code multiplexing scheme to implement a distributed network of sensors throughout the microchip, thereby compressing all sensing events into a single electrical output.
View Article and Find Full Text PDFIntegration of Asymmetric Multi-Path Hollow Structure and Multiple Heterogeneous Interfaces in FeO@C@NiO Nanoprisms Enabling Ultra-Low and Broadband Absorption.
Small
January 2025
Key Laboratory of Aerospace Materials and Performance (Ministry of Education) School of Materials Science and Engineering, Beihang University, No.37 Xueyuan Road, Beijing, 100191, P. R. China.
A reasonable construction of hollow structures to obtain high-performance absorbers is widely studied, but it is still a challenge to select suitable materials to improve the low-frequency attenuation performance. Here, the FeO@C@NiO nanoprisms with unique tip shapes, asymmetric multi-path hollow cavity, and core-shell heteroepitaxy structure are designed and synthesized based on anisotropy and intrinsic physical characteristics. Impressively, by changing the load of NiO, the composites achieve strong absorption, broadband, low-frequency absorption: the reflection loss of -55.
View Article and Find Full Text PDFBroadband wireless battery-free acoustic identification tags for high data-rate underwater backscatter communication.
J Acoust Soc Am
January 2025
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
Developing persistent and smart underwater markers is critical for improving navigation accuracy and communication capabilities of autonomous underwater vehicles (AUVs). A wireless acoustic identification tag, which uses a piezoelectric transducer tuned in the broadband ultrasonic range (200-500 kHz), was experimentally demonstrated to achieve highly efficient power transfer (source-to-tag electrical power efficiency of >2% at 6 m) and concurrent high data rate and backscatter level communication (>83.3 kbit s-1, >170 dB sound pressure level at 6 m) with potential operating range ≈ 10 m based on analytical extrapolations.
View Article and Find Full Text PDFAnthropometric but not motor characteristics of young volleyball players were improved after a one-week-long intense training sports camp.
Sci Rep
January 2025
Department of Kinesiology and Health Prevention, Jan Dlugosz University in Czestochowa, Czestochowa, Poland.
This study aimed to examine potential changes in the anthropometric and motor characteristics of volleyball players aged 17.98 ± 0.51 years after participation in a week-long sports camp.
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