Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박관규 | - |
dc.date.accessioned | 2018-07-27T00:41:11Z | - |
dc.date.available | 2018-07-27T00:41:11Z | - |
dc.date.issued | 2013-11 | - |
dc.identifier.citation | ULTRASONICS, 권: 53, 호: 7, 페이지: 1355-1362 | en_US |
dc.identifier.issn | 0041-624X | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0041624X1300098X?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/73259 | - |
dc.description.abstract | In this paper, we present an airborne 3-D volumetric imaging system based on capacitive micromachined ultrasonic transducers (CMUTs). For this purpose we fabricated 89-kHz CMUTs where each CMUT is made of a circular single-crystal silicon plate with a radius of 1 mm and a thickness of 20 mu m, which is actuated by electrostatic force through a 20-mu m vacuum gap. The measured transmit sensitivity at 300-V DC bias is 14.6 Pa/V and 24.2 Pa/V, when excited by a 30-cycle burst and a continuous wave, respectively. The measured receive sensitivity at 300-V DC bias is 16.6 mV/Pa (-35.6 dB re 1 V/Pa) for a 30-cycle burst. A 26 x 26 2-D array was implemented by mechanical scanning a co-located transmitter and receiver using the classic synthetic aperture (CSA) method. The measurement of a 1.6 lambda-size target at a distance of 500 mm presented a lateral resolution of 3.17 degrees and also showed good agreement with the theoretical point spread function. The 3-D imaging of two plates at a distance of 350 mm and 400 mm was constructed to exhibit the capability of the imaging system. This study experimentally demonstrates that a 2-D CMUT array can be used for practical 3-D imaging applications in air, such as a human-machine interface. (C) 2013 Elsevier B. V. All rights reserved. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Science B.V., Amsterdam. | en_US |
dc.subject | Airbone ultrasound | en_US |
dc.subject | Capacitive micromachined ultrasonic transducer (CMUT) | en_US |
dc.subject | 3D imaging | en_US |
dc.title | 3-D airborne ultrasound synthetic aperture imaging based on capacitive micromachined ultrasonic transducers | en_US |
dc.type | Article | en_US |
dc.relation.no | 7 | - |
dc.relation.volume | 53 | - |
dc.identifier.doi | 10.1016/j.ultras.2013.04.003 | - |
dc.relation.page | 1355-1362 | - |
dc.relation.journal | ULTRASONICS | - |
dc.contributor.googleauthor | Park, Kwan Kyu | - |
dc.contributor.googleauthor | Khuri-Yakub, Butrus T. | - |
dc.relation.code | 2013012262 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MECHANICAL ENGINEERING | - |
dc.identifier.pid | kwankyu | - |
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