Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Amirabbas Pirouz"'
Autor:
Amirabbas Pirouz, F. Levent Degertekin
Publikováno v:
Sensors, Vol 19, Iss 4, p 876 (2019)
With Capacitive Micromachined Ultrasound Transducers (CMUTs) increasingly being used for high intensity, large signal ultrasound applications and several drive methods being proposed, the efficiency of these devices in this operation regime have not
Externí odkaz:
https://doaj.org/article/f04c54ec334347dc8b8d36adb10d6c65
Publikováno v:
2019 IEEE International Ultrasonics Symposium (IUS).
This paper presents FEA analysis using high-performance computing for crosstalk study in a piezoelectric micromachined ultrasound transducer (PMUT) array. The array comprises 64 1-D elements which each element comprises 80 membranes. The simulation f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58394308dc3d0f8f2a60f08872ce62c2
https://doi.org/10.1109/ultsym.2019.8925734
https://doi.org/10.1109/ultsym.2019.8925734
Autor:
F. Levent Degertekin, Gwangrok Jung, Thomas M. Carpenter, David M. J. Cowell, Maysam Ghovanloo, Muhammad W. Rashid, Amirabbas Pirouz, Coskun Tekes, Ahmad Revanitabar, Steven Freear
Publikováno v:
2018 IEEE International Ultrasonics Symposium (IUS).
CMUT-on-CMOS integration is particularly suitable for catheter based ultrasound imaging applications, where electronics integration enables multiplexing capabilities to reduce the number of electrical connections leading to smaller catheter cable pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84c11111b875bcd8d1ad77ee609c516b
https://doi.org/10.1109/ultsym.2018.8579915
https://doi.org/10.1109/ultsym.2018.8579915
Autor:
Amirabbas Pirouz, F. Levent Degertekin
This paper reports an improved CMOS compatible low temperature sacrificial layer fabrication process for Capacitive Micromachined Ultrasonic Transducers (CMUTs). The process adds the fabrication step of silicon oxide evaporation which is followed by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::032cdf51531be1e41c916b6290bef20f
https://europepmc.org/articles/PMC5958899/
https://europepmc.org/articles/PMC5958899/
Publikováno v:
BioCAS
A new pulser topology has been presented for driving capacitive micromachined ultrasound transducer (CMUT), which can generate pulses as large as twice the supply voltage. The pulser features bootstrapping and dynamic gate biasing techniques to achie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad0ee5d19b89183ca1a695df32ccef6e
https://doi.org/10.1109/biocas.2017.8325110
https://doi.org/10.1109/biocas.2017.8325110
Autor:
S. Abdollah Mirbozorgi, Ozgur Kocaturk, Maysam Ghovanloo, F. Levent Degertekin, Amirabbas Pirouz, Robert J. Lederman, Coskun Tekes
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
This paper presents an catheter prototype developed for testing feasibility of intracardiac echography (ICE) in a magnetic resonance imaging (MRI) system. The presented catheter includes a capacitive micromachined ultrasonic transducer (CMUT) array a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53eb07bfeabae3ef6705020bca3ae3cc
https://doi.org/10.1109/ultsym.2017.8091893
https://doi.org/10.1109/ultsym.2017.8091893
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Capacitive micromachined ultrasonic transducers (CMUTs) are prone to having low transmit sensitivity. According to large signal CMUT models, this shortcoming can be overcome with higher pulse voltages and optimized bipolar pulse drives [1]. Therefore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f45dc05a15b63ab4246a397c79fd7c9
https://doi.org/10.1109/ultsym.2017.8092092
https://doi.org/10.1109/ultsym.2017.8092092
Autor:
Amirabbas Pirouz, F. Levent Degertekin
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
CMUT efficiency depends on a high electric field over a thin vacuum gap and a dielectric isolation layer. Ideally this high electric field should only exist over the vibrating membrane of the CMUT, but electrical connections between the membranes usu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e8296671450594af4c25cee08f364ba
https://doi.org/10.1109/ultsym.2017.8092381
https://doi.org/10.1109/ultsym.2017.8092381
Autor:
M. Wasequr Rashid, Gwangrok Jung, Coskun Tekes, Maysam Ghovanloo, F. Levent Degertekin, David M. J. Cowell, Thomas M. Carpenter, Amirabbas Pirouz, Steven Freear
Publikováno v:
2016 IEEE International Ultrasonics Symposium (IUS).
3-D imaging ICE catheters with large element counts present design challenges in achieving simultaneous data readout from all elements while significantly reducing cable count for a small catheter diameter. Current approaches such as microbeamformer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23dbd77f1cdea67a69a2e4539916dd9f
https://doi.org/10.1109/ultsym.2016.7728506
https://doi.org/10.1109/ultsym.2016.7728506
Autor:
Amirabbas Pirouz, F. Levent Degertekin
Publikováno v:
The Journal of the Acoustical Society of America. 141:3494-3495
Although capacitive micromachined ultrasonic transducers (CMUTs) are mostly considered for imaging applications for their broad bandwidth, these devices can also prove useful for high intensity focused ultrasound (HIFU) applications for therapeutics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17ded7daaf8e9cce2ff4947e44d9a59b
https://doi.org/10.1121/1.4987302
https://doi.org/10.1121/1.4987302