Results 61 to 70 of about 1,412,725 (216)

An All LTPS-TFT-Based Charge-Integrating Amplifier for Sensor-Array Readout Circuit on Flexible Substrate

IEEE Open Journal of the Solid-State Circuits Society, 2022
This article presents the design of a readout circuit for charge-output sensor arrays integrated on a flexible substrate. The charge-integrating amplifier is built with a current-output transimpedance amplifier that includes the integrator function with ...
Mohit Dandekar, Kris Myny, Wim Dehaene
doaj   +1 more source

Orthogonal Chirp Coded Excitation in a Capacitive Micro-machined Ultrasonic Transducer Array for Ultrasound Imaging: A Feasibility Study

Sensors, 2019
It has been reported that the frequency bandwidth of capacitive micro-machined ultrasonic transducers (CMUTs) is relatively broader than that of other ceramic-based conventional ultrasonic transducers.
Bae-Hyung Kim, Seungheun Lee, Kang-Sik Kim   +2 more
doaj   +1 more source

Design and implementation of CMUT multi-channel ultrasonic transceiver board based on PXIe

Dianzi Jishu Yingyong
To enable multi-channel pulse transmission, data acquisition, storage, transmission, and analysis based on a capacitive micromachined ultrasonic transducer (CMUT) array, a 32-channel ultrasound transceiver board was designed based on the PXIe bus.
Wu Shuaiqi, He Changde, Sun Shuaiwen, Lu Xiaoxing, Zhang Guojun, Zhang Wendong   +5 more
doaj   +1 more source

Preliminary Demonstration of Pulse-Echo Imaging With a Long Monolithic Flexible CMUT Array

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
Conformal ultrasound imaging using large-area transducer arrays is an emerging technology with significant potential for real-time, continuous, functional, and health monitoring applications.
Amirhossein Omidvar, R. Rohling, E. Cretu, M. Cresswell, Antony J. Hodgson   +4 more
semanticscholar   +1 more source

Flexible wearable electronics for cardiovascular monitoring from surface signals to deep physiological insights

FlexMat, EarlyView.
This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen, Hongwen Chen, Yuanyuan Li, Pingan Yang, Rui Li, Zhihao Zhou   +5 more
wiley   +1 more source

2D CMUT array based ultrasonic micromanipulation platform

, 2016
In this paper, we designed and simulated a multilayer planar resonator with target frequency of 2.5 MHz which is created over a row/column-addressed 2D CMUT array.
Zhang, Xiao, Oralkan, Ömer, Arooba Zeshan, Omer Oralkan, Zeshan, Arooba, Xiao Zhang, Yamaner, Feysel Yalçın, F. Yalcin Yamaner   +7 more
core   +1 more source

Proof of Concept and Preliminary Results of Gas Detection by Measuring the Admittance at the Resonance and Anti-resonance of an Uncoated CMUT

Frontiers in Mechanical Engineering, 2020
Functionalized films are commonly used in gas sensing to target a particular gas. This is due, in part, to their usually high capability to detect very low concentrations and their high selectivity.
Luis Iglesias, Priyadarshini Shanmugam, Jean-François Michaud, Daniel Alquier, Dominique Certon, Isabelle Dufour   +5 more
doaj   +1 more source

A Novel Slit Lamp‐Based System for 3D Ultrasound of the Eye

Journal of Ultrasound in Medicine, EarlyView.
Objectives This study aims to develop and evaluate a novel slit‐lamp‐based system to acquire 3‐dimensional (3D) ultrasound volumes using conventional ultrasound probes. Methods A slit‐lamp adapter was 3D printed and connected with a linear actuator and graphical user interface (GUI) system to control movement and create volumes of 2‐dimensional scans ...
Claire E. Malley, Joseph P. Miller, Boyan Pan, Josiah K. To, Jack O. Thomas, Steven Y. Chang, Jason Dagoon, William C. Tang, Parsa Riazi Esfahani, Andrew W. Browne   +9 more
wiley   +1 more source

Fabrication and Packaging of CMUT Using Low Temperature Co-Fired Ceramic

Micromachines, 2018
This paper presents fabrication and packaging of a capacitive micromachined ultrasonic transducer (CMUT) using anodically bondable low temperature co-fired ceramic (LTCC).
Fikret Yildiz, Tadao Matsunaga, Yoichi Haga   +2 more
doaj   +1 more source

Equivalent circuit-based analysis of CMUT cell dynamics in arrays [PDF]

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2013
Capacitive micromachined ultrasonic transducers (CMUTs) are usually composed of large arrays of closely packed cells. In this work, we use an equivalent circuit model to analyze CMUT arrays with multiple cells. We study the effects of mutual acoustic interactions through the immersion medium caused by the pressure field generated by each cell acting ...
Oguz, H. K., Atalar, A., Koymen, H.
openaire   +4 more sources