CMUTs with vented cavities and non-uniform squeeze films

来源 :2015两岸超声技术与医学研讨会 | 被引量 : 0次 | 上传用户:ffcsyangchh
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Background,Motivation and Objective CMUTs typically have a wide bandwidth when immersed in a liquid medium like water which makes them quite attractive for applications like medical ultrasound imaging. However, in airborne applications, CMUTs have a very narrow bandwidth. Previously we had proposed CMUTs with the cavity between the plate and the substrate vented to the ambient environment.
其他文献
Background,Motivation and Objective It is possible to observe non-linear acoustic propagation along a chain of spheres that are in contact with each other.As dispersion is also present,solitary waves
会议
Background,Motivation and Objective These last years,numerous applications have emerged from the research field of Phononic Crystal(PC):frequency filters,wave collimation,super-resolution lenses… Thes
会议
Background,Motivation and Objective Phononic Crystals(PCs) have received a great deal of interest for the last decades and recent studies have introduced significant breakthroughs in the domain of tun
会议
Background,Motivation and Objective Phononic crystal sensors are promising for liquid sensor applications.We have shown already that the frequency of narrow transmission bands depends on properties of
会议
Background,Motivation and Objective The importance of suppressing nonlinear signals in filtering devices grows with increasing number of simultaneously active frequency bands and continuing miniaturiz
会议
Background,Motivation and Objective Importance of linearity of the RF front-end in cellular phone handsets has been getting strong in recent years.Thus,ultimate linearization of the SAW duplexer which
会议
Background,Motivation and Objective SAW delay lines are widely used for wireless passive sensing of various quantities,like pressure and temperature.To reach the maximum sensitivity,the sensor signal
会议
Background,Motivation and Objective The integration of CMUT transducers with supporting electronic circuits is critical for the overall efficiency of the CMUT-based imaging systems and for a compact f
会议
Background,Motivation and Objective Capacitive micro-machined ultrasonic transducers (CMUTs), as an alternative of conventional piezoelectric transducers, have various advantages such as superior imag
会议
Background,Motivation and Objective Wafer bonding is often a preferred method over surface micromachining for CMUT fabrication because the resulting membrane layer is more uniform and can be easily op
会议