Results 41 to 50 of about 799 (161)

Outperforming piezoelectric ultrasonics with high-reliability single-membrane CMUT array elements

Microsystems & Nanoengineering, 2022
It has long been hypothesized that capacitive micromachined ultrasound transducers (CMUTs) could potentially outperform piezoelectric technologies. However, challenges with dielectric charging, operational hysteresis, and transmit sensitivity have stood ...
Eric B. Dew, Afshin Kashani Ilkhechi, Mohammad Maadi, Nathaniel J. M. Haven, Roger J. Zemp   +4 more
doaj   +1 more source

Fabrication of Vacuum-Sealed Capacitive Micromachined Ultrasonic Transducer Arrays Using Glass Reflow Process

Micromachines, 2016
This paper presents a process for the fabrication of vacuum-sealed capacitive micromachined ultrasonic transducer (CMUT) arrays using glass reflow and anodic bonding techniques.
Nguyen Van Toan, Shim Hahng, Yunheub Song, Takahito Ono   +3 more
doaj   +1 more source

Inkjet-Printed Functionalization of CMUT-Based CO₂ Sensors

Sensors, 2022
The trade-off between the functionalization shift of the informative parameters and sensitivity of capacitive micromachined ultrasound transducers (CMUT)-based CO2 sensors is addressed, and the CMUT surface modification process by thin inkjet-printed ...
Dovydas Barauskas, Donatas Pelenis, Mindaugas Dzikaras, Marius Mikolajunas, Gailius Vanagas, Darius Virzonis   +5 more
doaj   +1 more source

Investigation of PDMS as coating on CMUTs for imaging [PDF]

2014 IEEE International Ultrasonics Symposium, 2014
A protective layer is necessary for Capacitive Micromachined Ultrasonic Transducers (CMUTs) to be used for imaging purpose. The layer should both protect the device itself and the patient while maintaining the performance of the device. In this work Sylgard 170 PDMS is tested as coating material for CMUTs through comparison of transmit pressure and ...
la Cour, Mette Funding, Stuart, Matthias Bo; id_orcid 0000-0003-0809-530X, Laursen, Mads Bjerregaard, Diederichsen, Søren Elmin, Thomsen, Erik Vilain; id_orcid 0000-0002-2772-926X, Jensen, Jørgen Arendt; id_orcid 0000-0002-7896-3136   +5 more
openaire   +2 more sources

Piezoelectric Materials in Medical Ultrasound: A Comprehensive Review From Fundamentals to Translational Prospects

Information &Functional Materials, EarlyView.
Piezoelectric materials are reviewed as active platforms for medical ultrasound, bridging electromechanical fundamentals, transducer architectures, and biomedical applications. Material–device co‐design is emphasized as the key to high‐performance diagnosis, therapy, monitoring, wearable ultrasound, and emerging ultrasound‐responsive functions ...
Jianan Li, Qing Wan
wiley   +1 more source

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

Journal of Ultrasound in Medicine, Volume 45, Issue 8, Page 1695-1706, August 2026.
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

Quantitative comparison of PZT and CMUT probes for photoacoustic imaging: Experimental validation

Photoacoustics, 2017
Photoacoustic (PA) signals are short ultrasound (US) pulses typically characterized by a single-cycle shape, often referred to as N-shape. The spectral content of such wideband signals ranges from a few hundred kilohertz to several tens of megahertz ...
Maëva Vallet, François Varray, Jérôme Boutet, Jean-Marc Dinten, Giosuè Caliano, Alessandro Stuart Savoia, Didier Vray   +6 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Transistor‐Level Activation Functions via Two‐Gate Designs: From Analog Sigmoid and Gaussian Control to Real‐Time Hardware Demonstrations

Advanced Materials, Volume 38, Issue 21, 13 April 2026.
Screen gate‐based transistors are presented, enabling tunable analog sigmoid and Gaussian activations. The SA‐transistor improves MRI classification accuracy, while the GA‐transistor supports precise Gaussian kernel tuning for forecasting. Both functions are implemented in a single device, offering compact, energy‐efficient analog AI processing ...
Junhyung Cho, Youngmin Han, Won Woo Lee, Youngwoo Yoo, Kannan Udaya Mohanan, Chang‐Hyun Kim, Junhwan Choi, Young‐Joon Kim, Wonjun Shin, Hocheon Yoo   +9 more
wiley   +1 more source

Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities

Advanced Materials, Volume 38, Issue 14, 6 March 2026.
As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas, Bilal Kizilaslan, Aastha Shah, Jason F. Hou, Yoonsoo Shin, Alejandra Hernandez Moyers, Claudia Lozano, Canan Dagdeviren   +7 more
wiley   +1 more source