Results 41 to 50 of about 217,231 (290)

Flexible large-area ultrasound arrays for medical applications made using embossed polymer structures

Nature Communications
With the huge progress in micro-electronics and artificial intelligence, the ultrasound probe has become the bottleneck in further adoption of ultrasound beyond the clinical setting (e.g. home and monitoring applications).
Paul L. M. J. van Neer, Laurens C. J. M. Peters, Roy G. F. A. Verbeek, Bart Peeters, Gerard de Haas, Lars Hörchens, Laurent Fillinger, Thijs Schrama, Egon J. W. Merks-Swolfs, Kaj Gijsbertse, Anne E. C. M. Saris, Moein Mozaffarzadeh, Jan M. Menssen, Chris L. de Korte, Jan-Laurens P. J. van der Steen, Arno W. F. Volker, Gerwin H. Gelinck   +16 more
doaj   +1 more source

Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders

Frontiers in Remote Sensing
This study presents a detailed analysis of Angular Response Curves (ARC) extracted from a multi-spectral seabed backscatter dataset utilizing both calibrated single-beam (SBES) and multibeam echosounders (MBES).
Ridha Fezzani, Laurent Berger, Naig Le Bouffant, Xavier Lurton   +3 more
doaj   +1 more source

Analysis of Near-Capacity Iterative Decoding Schemes for Wireless Communication Using EXIT Charts

IEEE Access, 2020
This article proposes and compares the performance of three flexible and bandwidth efficient transceivers. The terminology of Over-Complete Mapping (OCM) is introduced in the first two schemes.
Nasru Minallah, Muhammad Fasih Uddin Butt, Imran Ullah Khan, Ishtiaque Ahmed, Khurram S. Khattak, Gang Qiao, Songzuo Liu   +6 more
doaj   +1 more source

Digital sonar design in underwater acoustics: principles and applications

, 2012
"Digital Sonar Design in Underwater Acoustics Principles and Applications" provides comprehensive and up-to-date coverage of research on sonar design, including the basic theory and techniques of digital signal processing, basic concept of information ...
Li, Qihu
core   +1 more source

Information Transmission Strategies for Self‐Organized Robotic Aggregation

Advanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng, Zihan Li, Yifeng Shao, Jinhao Liu, Li Yu, Shuguang Li   +5 more
wiley   +1 more source

Sound absorbing properties of spiral metasurfaces inspired by micro-perforated plates

Theoretical and Applied Mechanics Letters, 2023
As a kind of classical low-frequency sound-absorbing material, the microperforated plate (MPP) has been widely used. Here, we inspired by the sound absorption mechanism of the MPP, a spiral metasurface (SM) is designed and the analytical solution of ...
Han Zhang, Pengxiang Hao, Huilan Wu, Zhenyuan Lin, Chengpeng Hao, Zhengpan Qi, Ning Hu   +6 more
doaj   +1 more source

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

Advanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis, Luis Carlos Sanjuan Acosta, Shubh P. Mehta, Baiyan Qi, Yang Yang, Luis Solorio, Craig J. Goergen, David J. Cappelleri   +7 more
wiley   +1 more source

Source localization in shallow ocean using a deep learning approach with range-dependent sound speed profile modeling [PDF]

JASA Express Letters
Model-based deep learning approaches provide an alternative scheme to address the problem of the shortage of training data. However, performance degradation caused by sound speed profile (SSP) mismatch remains a critical challenge, particularly in ...
Jing Guo, Juan Zeng
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Underwater Acoustic Research Trends with Machine Learning: Ocean Parameter Inversion Applications

한국해양공학회지, 2020
Underwater acoustics, which is the study of the phenomena related to sound waves in water, has been applied mainly in research on the use of sound navigation and range (SONAR) systems for communication, target detection, investigation of marine resources
Haesang Yang, Keunhwa Lee, Youngmin Choo, Kookhyun Kim   +3 more
doaj   +1 more source