TY - GEN
T1 - A Sub-Millimeter Lateral Resolution Ultrasonic Beamforming System for Brain Stimulation in Behaving Animals
AU - Seok, Chunkyun
AU - Yamaner, F. Yalcin
AU - Sahin, Mesut
AU - Oralkan, Omer
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - In this paper, we present a second-generation wireless ultrasonic beamforming system, aiming for a truly wearable device for brain stimulation in small behaving animals. The fully-integrated, battery-operated system enables a self- contained untethered system. The system is partitioned into two parts for weight distribution: (1) a 1D capacitive micromachined transducer (CMUT) array on a separate head-mountable flexible printed circuit board (PCB), (2) a rigid back-mountable PCB including electronics such as a custom ASIC, a power management unit, a wireless module, and a battery. The newly developed ASIC not only enables a compact electronic system (30.5 mm x 63.5 mm) but also generates 3.4 times higher acoustic pressure (1.89 MPaPP), which corresponds to a spatial-peak pulse-average intensity (ISPPA) of 33.5 W/cm2, at a depth of 5 mm, compared to the first-generation ASIC. The full width at half maximum (FWHM) of the pressure is estimated to be 0.6 mm, achieving a sub-millimeter lateral resolution by using 5-MHz focused waves.
AB - In this paper, we present a second-generation wireless ultrasonic beamforming system, aiming for a truly wearable device for brain stimulation in small behaving animals. The fully-integrated, battery-operated system enables a self- contained untethered system. The system is partitioned into two parts for weight distribution: (1) a 1D capacitive micromachined transducer (CMUT) array on a separate head-mountable flexible printed circuit board (PCB), (2) a rigid back-mountable PCB including electronics such as a custom ASIC, a power management unit, a wireless module, and a battery. The newly developed ASIC not only enables a compact electronic system (30.5 mm x 63.5 mm) but also generates 3.4 times higher acoustic pressure (1.89 MPaPP), which corresponds to a spatial-peak pulse-average intensity (ISPPA) of 33.5 W/cm2, at a depth of 5 mm, compared to the first-generation ASIC. The full width at half maximum (FWHM) of the pressure is estimated to be 0.6 mm, achieving a sub-millimeter lateral resolution by using 5-MHz focused waves.
UR - http://www.scopus.com/inward/record.url?scp=85077589223&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85077589223&partnerID=8YFLogxK
U2 - 10.1109/EMBC.2019.8857627
DO - 10.1109/EMBC.2019.8857627
M3 - Conference contribution
C2 - 31947322
AN - SCOPUS:85077589223
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 6462
EP - 6465
BT - 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019
Y2 - 23 July 2019 through 27 July 2019
ER -