TY - GEN
T1 - Fabrication and performance of a high-frequency geometrically focussed composite transducer with triangular pillar geometry
AU - Brown, J. A.
AU - Chérin, E.
AU - Yin, J.
AU - Foster, F. S.
PY - 2007
Y1 - 2007
N2 - A single-element, 40 MHz, 3 mm diameter transducer was fabricated with a geometric focus at 9 mm The transducer was based on a piezo-composite substrate with triangular-shaped composite pillars. The transducer produced pukes with a two-way bandwidth of 55 %. The bandwidth and impedance magnitude were in agreement with that predicted using finite element modeling. A one-way radiation pattern was collected using a needle hydrophone The one-way -3 dB beamwidth at the geometric focus was measured to be 120 pan and the -3 dB depth-of-field was 2.5 mm This is in good agreement to the theoretical predictions of 112.5 μm and 2.4 mm The triangular-pillar composite transducer was then compared to a transducer with square composite pillars. A 12 dB reduction in the amplitude of the secondary resonance was found for the triangular-pillar composite
AB - A single-element, 40 MHz, 3 mm diameter transducer was fabricated with a geometric focus at 9 mm The transducer was based on a piezo-composite substrate with triangular-shaped composite pillars. The transducer produced pukes with a two-way bandwidth of 55 %. The bandwidth and impedance magnitude were in agreement with that predicted using finite element modeling. A one-way radiation pattern was collected using a needle hydrophone The one-way -3 dB beamwidth at the geometric focus was measured to be 120 pan and the -3 dB depth-of-field was 2.5 mm This is in good agreement to the theoretical predictions of 112.5 μm and 2.4 mm The triangular-pillar composite transducer was then compared to a transducer with square composite pillars. A 12 dB reduction in the amplitude of the secondary resonance was found for the triangular-pillar composite
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U2 - 10.1109/ULTSYM.2007.33
DO - 10.1109/ULTSYM.2007.33
M3 - Conference contribution
AN - SCOPUS:48149111319
SN - 1424413834
SN - 9781424413836
T3 - Proceedings - IEEE Ultrasonics Symposium
SP - 80
EP - 83
BT - 2007 IEEE Ultrasonics Symposium Proceedings, IUS
T2 - 2007 IEEE Ultrasonics Symposium, IUS
Y2 - 28 October 2007 through 31 October 2007
ER -