Results 51 to 60 of about 5,103,302 (259)

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

STLFM Signal Based Adaptive Synchronization for Underwater Acoustic Communications

IEEE Access, 2019
In underwater acoustic communications (UAC), signal synchronization plays a key role in the performance. It is usually performed using a known preamble transmitted prior to the data. However, the underwater acoustic (UWA) channel is characterized as time-
Fei Yuan, Zhenyu Jia, Jianghui Li, En Cheng   +3 more
doaj   +1 more source

Underwater Communication Using Acoustic Parametric Arrays [PDF]

The 4th International Electronic Conference on Sensors and Applications, 2017
This paper presents a study of different types of parametric signals with application to submarine acoustic telecommunications. In all of them, the carrier frequency is 200 kHz, which corresponds to that resonation of the transducer under study, while they differ by the different modulations they present. In this sense, we study modulations with sweeps
Miguel Ardid, María Campo-Valera, Dídac Tortosa, Ivan Felis, Carlos Llorens, Juan Martínez-Mora   +5 more
openaire   +4 more sources

Medium access control, error control and routing in underwater acoustic networks: a discussion on protocol design and implementation [PDF]

, 2013
The journey of underwater communication which began from Leonardo’s era took four and a half centuries to find practical applications for military purposes during World War II.
Azad, Md. Saiful
core  

Flexible Sensors for Robotics Tactile Perception: A Review

Advanced Robotics Research, EarlyView.
Flexible tactile sensing for robotics is reviewed through four interconnected dimensions. Physical mechanisms include piezoresistive, capacitive, piezoelectric, triboelectric, iontronic, and optical sensing. Structural design includes bioinspired, defect‐based, and MEMS‐based tactile systems.
Yu Song, Ying Chen, Yihao Chen, Xue Feng
wiley   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

Time Synchronization Scheme of Underwater Platforms Using Wireless Acoustic and Optical Communication

, 2022
Publisher Copyright: © 2022 IEEE.Time synchronization in autonomous underwater vehicle (AUV) formations is significant for joint underwater survey tasks.
Matsuda, Takumi, Pajarinen, Joni, Peters, Jan, Weng, Yang, Sekimori, Yuki, Maki, Toshihiro   +5 more
core   +1 more source

Molecular and Cellular Hallmarks of Age‐Related Vestibular Hair Cell Degeneration

Advanced Science, EarlyView.
This study utilizes single‐cell RNA‐seq transcriptomes, advanced imaging, and electrophysiology to examine universal and cell‐type‐specific aging signatures of vestibular hair cells. The study shows that impaired hair bundle function is a key driver of age‐related vestibular dysfunction.
Samadhi Kulasooriya, Huizhan Liu, Sarath Vijayakumar, Celia Bloom, Zhenhang Xu, Shu Tu, Benjamin J. Borgmeier, Mi Zhou, Litao Tao, Bechara Kachar, David Z. He   +10 more
wiley   +1 more source

An Approach for Diver Passive Detection Based on the Established Model of Breathing Sound Emission

Journal of Marine Science and Engineering, 2020
Diver breathing sounds can be used as a characteristic for the passive detection of divers. This work introduces an approach for detecting the presence of a diver based on diver breathing sounds signals.
Qiang Tu, Fei Yuan, Weidi Yang, En Cheng
doaj   +1 more source

R&D of a low-complexity OFDM acoustic communication payload for Micro-AUV in confined space

EURASIP Journal on Advances in Signal Processing, 2022
With small size, high flexibility, low cost, and deployment convenience, Micro-sized autonomous underwater vehicle (Micro-AUV) is capable of performing diverse underwater missions efficiently in confined underwater space, for the extensive purpose of ...
Weihua Jiang, Qiuyang Tao, Junhui Yao, Feng Tong, Fumin Zhang   +4 more
doaj   +1 more source