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pro vyhledávání: '"Arne Ronnekleiv"'
Autor:
Arne Ronnekleiv, Kamal Raj Chapagain
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 60:2440-2452
Capacitive micromachined ultrasonic transducers (CMUTs) manufactured on silicon substrates need an acoustic backing to suppress substrate ringing when such transducers are in operation. The acoustic backing most often used for ultrasound transducers
Publikováno v:
Aquacultural Engineering. 36:122-126
The objective of the experiments reported here has been to develop a fish tag, which is as cheap and simple to insert as the coded wire tag and which has the remote readout capabilities of the radio frequency (rf) based passive integrated transponder
Autor:
Arne Ronnekleiv
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 52:2173-2184
A method for analyzing capacitive micromachined ultrasonic transducer (CMUT) arrays and arrays of elements composed of several CMUTs is proposed. It is based on a combination of a free acoustic mode description of an isolated CMUT, and the coupling o
Autor:
D. T. Wang, Arne Ronnekleiv, Kjell Arne Ingebrigtsen, Erik Poppe, Kari Schjølberg-Henriksen, Kjersti Midtbo, Geir Uri Jensen, J. Due-Hansen
Publikováno v:
2012 IEEE Sensors.
Capacitive micromachined ultrasonic transducers (CMUTs) have prospective clinical applications in ultrasound diagnostics and therapy. We have modeled, fabricated, and characterized CMUT arrays suitable for intravascular and gastrointestinal use. The
Autor:
Arne Ronnekleiv, Sigrid Berg
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 59(7)
Capacitive micromachined ultrasonic transducers (CMUTs) have shown promising qualities for medical imaging. However, there are still some problems to be investigated, and some challenges to overcome. Acoustic backing is necessary to prevent SAWs exci
Autor:
Arne Ronnekleiv, Kamal Raj Chapagain
Publikováno v:
2011 IEEE International Ultrasonics Symposium.
Capacitive micromachined ultrasonic transducer (CMUT) has been emerging technology in the field of medical imaging after its first demonstration in early 90s. CMUTs are fabricated on silicon substrates using micromachining techniques. They can genera
Publikováno v:
2011 IEEE International Ultrasonics Symposium.
Minimizing the bottom reflection in Ultrasonic CMUT Transducer backing using low profile structuring
Autor:
Kamal Raj Chapagain, Arne Ronnekleiv
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
Capacitive Micro-machined Ultrasonic Transducer (CMUT) transducers need an acoustic backing to ensure that any acoustic signal which propagates from the transducer into the substrate is absorbed in the backing. The backing should be made such that it
Autor:
Sigrid Berg, Arne Ronnekleiv
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
Capacitive micromachined ultrasonic transducers (CMUTs) have in the last decade shown promising qualities for medical imaging. But there are some acoustical challenges that have to be overcome before the performance of a CMUT array with integrated el
Autor:
Arne Ronnekleiv
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
The fact that CMUT transducers have not yet made it into commercial products indicates that so far the transducers does not meet the needs of the imaging community. This may be due to low sensitivity for the available arrays, a quality that is improv