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31.发明授权Liquid surface control with an applied pressure signal in acoustic ink printing 失效液压表面控制与应用压力信号在声学印刷中的应用
公开(公告)号：US5229793A
公开(公告)日：1993-07-20
申请号：US634248
申请日：1990-12-26
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： This invention is an acoustic ink printer. It has a pool of ink (33) with a free surface (36). Underneath the ink is a print head (10) which has droplet ejectors (14) for irradiating the free surface (36) of the pool of ink (33) with focused acoustic radiation (44). Over the free surface (36) of the pool of ink (33) is a membrane (16), with one or more apertures (20) aligned with the droplet ejectors (14), in intimate contact with the free surface (36) of the pool of ink (33). The apertures 20 are substantially larger than the waist diameter (46) of the focused acoustic radiation (44). An external pressure source (50) maintains the meniscus (48) of the pool of ink (33) substantially in the focal plane (52) of the focused acoustic radiation (44) during operation of the droplet ejectors (14). A piezoelectric crystal (24) is in intimate contact with the pool of ink (33). An electrical signal source (32) energizes the piezoelectric crystal (24) in order to apply a pressure signal (54) on demand to the pool of ink (33) during operation of the droplet ejectors (14). The different pressure signals (54) resulting from application of different electrical signals (29) to the piezoelectric crystal (24) can be utilized to eject individual droplets (38) of ink (33) from the free surface (34) of the ink (33) on demand, or to effect finer control over the free surface (34) of the ink (33) than is possible with the external pressure source (50) by itself.
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公开(公告)号：US4909082A
公开(公告)日：1990-03-20
申请号：US281941
申请日：1988-12-06
摘要： A shear acoustic transducer-lens system in which a shear polarized piezoelectric material excites shear polarized waves at one end of a buffer rod having a lens at the other end which excites longitudinal waves in a coupling medium by mode conversion at selected locations on the lens.
摘要翻译： 剪切式声学传感器透镜系统，其中剪切极化压电材料在另一端具有透镜的缓冲杆的一端处激发剪切极化波，其通过在透镜上的选定位置处的模式转换激发耦合介质中的纵波。
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公开(公告)号：US4751529A
公开(公告)日：1988-06-14
申请号：US944490
申请日：1986-12-19
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： A printhead for an acoustic printer comprises one or more acoustic microlenses, each of which brings an acoustic beam to focus approximately at the free surface of a pool of ink for ejecting individual droplets of ink from the pool on demand. As used herein, an "acoustic microlens" is defined as being an acoustic lens having an aperture diameter which is less than an order of magnitude greater than the wavelength of the incident acoustic wave (i.e., the acoustic wave which illuminates the lens).
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公开(公告)号：US4749900A
公开(公告)日：1988-06-07
申请号：US931602
申请日：1986-11-17
IPC分类号： B06B1/06 , H01L41/083 , H01L41/24 , H01L41/08
CPC分类号： H01L41/083 , B06B1/0611 , H01L41/187 , H01L41/316 , Y10T29/42
摘要： The invention relates to a multi-layered piezoelectric acoustic transducer for generating layers of the same piezoelectric material are provided such tool alternate layers have different crystallographic orientations and different piezoelectric coupling coefficients. The layers may be provided so that alternate layers have crystallographic orientations which provide maximum electro-acoustic coupling and layers which provide minimum electro-acoustic coupling.
摘要翻译： 本发明涉及一种用于产生相同压电材料层的多层压电声换能器，这样的工具交替层具有不同的晶体取向和不同的压电耦合系数。 可以提供这些层，使得交替层具有提供最大电声耦合的晶体取向和提供最小电声耦合的层。
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公开(公告)号：US4697195A
公开(公告)日：1987-09-29
申请号：US946682
申请日：1987-01-05
CPC分类号： B41J2/14008 , B41J2002/14322 , Y10S310/80
摘要： A nozzleless print head for ink jet printing and the like comprises one or more essentially planar surface acoustic wave transducers which are submerged at a predetermined depth in a liquid filled reservoir, so that each of the transducers launches a converging cone of coherent acoustic waves into the reservoir, thereby producing an acoustic beam which comes to a focus at or near the surface of the reservoir (i.e., the liquid/air interface). The acoustic beam may be intensity modulated to control the ejection timing, or an external source may be used to extract droplets from the acoustically excited liquid on the surface of the reservoir on demand. Regardless of the timing mechanism employed, the size of the ejected droplets is determined by the waist diameter of the focused acoustic beam. To control, the direction in which the droplets are ejected, provision may be made for producing a controllable acoustical asymmetry for steering the focused acoustic beam in a direction generally parallel to the surface of the reservoir.
摘要翻译： 用于喷墨打印等的无喷嘴打印头包括一个或多个基本上平面的表面声波换能器，其在液体填充的储存器中浸没在预定深度处，使得每个换能器将相干声波的会聚锥发射到 从而产生在储存器表面（即，液体/空气界面）处或其附近聚焦的声束。 声束可以被强度调制以控制喷射定时，或者可以使用外部源来根据需要从储层表面上的声吸收液体中提取液滴。 不管所采用的定时机制如何，喷射的液滴的尺寸由聚焦声束的腰部直径决定。 为了控制喷射液滴的方向，可以提供用于产生可控的声学不对称性，以便在大致平行于储存器的表面的方向上转向聚焦的声束。
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36.发明授权Method and apparatus for ultrasound assisted local delivery of drugs and biomarkers 有权用于超声辅助局部递送药物和生物标志物的方法和装置公开(公告)号：US08852104B2
公开(公告)日：2014-10-07
申请号：US12798982
申请日：2010-04-14
CPC分类号： A61B5/0095 , A61B5/0068 , A61B5/0084 , A61B8/4281 , A61B8/4483 , A61M37/0092
摘要： The current invention provides an ultrasound-assisted delivery device, that includes a focused ultrasound transducer having an ultrasound focal point, a real-time imaging device having an imaging focal point, and a therapeutic delivery device, where the transducer and the imaging device are integrated with the delivery device, and the ultrasound focal point coincides with the imaging focal point, where the delivery device and transducer are disposed to provide an unobstructed imaging path for the real-time imaging device. The invention further includes a scanning optical or laser beam having a focal point disposed to sweep across the target, where the delivery device is disposed to deliver an optical contrast material to the target, and the scanning focal point coincides with the ultrasound and imaging focal points, where the target or the optical contrast material react to the scanning beam to generate at least one interface signal.
摘要翻译： 本发明提供了一种超声辅助输送装置，其包括具有超声焦点的聚焦超声换能器，具有成像焦点的实时成像装置和治疗递送装置，其中所述换能器和成像装置被集成 并且超声焦点与成像焦点重合，其中输送装置和换能器被设置成为实时成像装置提供无障碍的成像路径。 本发明还包括扫描光学或激光束，其具有设置成扫过靶的焦点，其中输送装置设置成将光学对比材料输送到靶，并且扫描焦点与超声波和成像焦点重合 ，其中所述目标或所述光学对比材料对所述扫描光束起反应以产生至少一个接口信号。
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公开(公告)号：US08843190B2
公开(公告)日：2014-09-23
申请号：US13554985
申请日：2012-07-20
CPC分类号： A61B5/0095 , A61B5/0507
摘要： Surface selective photoacoustic (PA) medical imaging is introduced. Surface selective PA imaging is responsive to surface features and does not image sub-surface features, in contrast to conventional PA imaging. The surface PA signal can be considerably larger than the bulk PA signal, for an air-coupled (or gas-coupled) acoustic transducer. Distinguishing these two signals based on time of arrival at the transducer can further distinguish the two signals. This approach provides numerous advantages. Non-contact imaging simplifies and expedites imaging, and can serve as a replacement for visual inspection by physicians. Applications include skin screening and endoscopy.
摘要翻译： 介绍了表面选择性光声（PA）医学成像。 与传统的PA成像相比，表面选择性PA成像对表面特征有反应，并且不影像亚表面特征。 对于空气耦合（或气体耦合）的声换能器，表面PA信号可以大大地大于体积PA信号。 基于到达换能器的时间区分这两个信号可以进一步区分两个信号。 这种方法提供了许多优点。 非接触式成像简化并加速成像，可作为医生进行视觉检查的替代品。 应用包括皮肤筛查和内窥镜检查。
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公开(公告)号：US07846102B2
公开(公告)日：2010-12-07
申请号：US12288575
申请日：2008-10-20
CPC分类号： H02N1/008 , B06B1/0292 , Y10T29/49005
摘要： A capacitive micromachined ultrasonic transducer (CMUT) array connected to a separate electronic unit is provided. The CMUT array includes at least two active elements, a ground element at the array end, and a non-active element having isolation trenches disposed between the active and ground elements. The active element includes a doped first silicon layer, a doped second silicon layer, and a first insulating layer disposed there between. A cavity is in the first silicon layer having a cross section that includes vertical portions disposed at each end of a horizontal portion, and the vertical portion spans from the first insulating layer through the first silicon layer such that a portion of the first silicon layer is isolated by the first insulating layer and the cavity. A membrane layer on the first silicon layer spans the cavity. A bottom electrode is disposed on the bottom of the second silicon layer.
摘要翻译： 提供连接到单独的电子单元的电容微机械超声换能器（CMUT）阵列。 CMUT阵列包括至少两个有源元件，阵列端的接地元件以及设置在有源和接地元件之间的具有隔离沟道的非有源元件。 有源元件包括掺杂的第一硅层，掺杂的第二硅层和设置在其间的第一绝缘层。 空腔在第一硅层中，其横截面包括设置在水平部分的每一端处的垂直部分，并且垂直部分跨越第一绝缘层穿过第一硅层，使得第一硅层的一部分为 由第一绝缘层和空腔隔离。 第一硅层上的膜层跨越空腔。 底部电极设置在第二硅层的底部。
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39.发明授权Acoustic crosstalk reduction for capacitive micromachined ultrasonic transducers in immersion 有权用于电容式微机械超声换能器的声学串扰降低公开(公告)号：US07745973B2
公开(公告)日：2010-06-29
申请号：US11789210
申请日：2007-04-23
IPC分类号： H01L41/08
CPC分类号： B06B1/0292
摘要： A reduced crosstalk capacitive micromachined ultrasonic transducer (CMUT) array is provided. The CMUT array has at least two CMUT array elements deposited on a substrate, at least one CMUT cell in the array element, a separation region between adjacent CMUT array elements, and a membrane formed in the separation region. The membrane reduces crosstalk between adjacent array elements, where the crosstalk is a dispersive guided mode of an ultrasonic signal from the CMUT propagating in a fluid-solid interface of the CMUT array. Each cell has an insulation layer deposited to the substrate. A cell membrane layer is deposited to the insulation layer, where the cell membrane layer has a vacuum gap therein. The cells further have an electrode layer deposited to a portion of the membrane layer, and a passivation layer deposited to the electrode layer, the cell membrane layer and to the insulation layer.
摘要翻译： 提供了减少的串扰电容微机械超声波换能器（CMUT）阵列。 CMUT阵列具有沉积在衬底上的至少两个CMUT阵列元件，阵列元件中的至少一个CMUT单元，相邻CMUT阵列元件之间的分离区域和形成在分离区域中的膜。 膜减少相邻阵列元件之间的串扰，其中串扰是来自在CMUT阵列的流体 - 固体界面中传播的CMUT的超声信号的色散引导模式。 每个单元具有沉积到基板上的绝缘层。 细胞膜层沉积到绝缘层，其中细胞膜层在其中具有真空间隙。 电池还具有沉积到膜层的一部分的电极层和沉积到电极层，细胞膜层和绝缘层的钝化层。
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公开(公告)号：US20090292208A1
公开(公告)日：2009-11-26
申请号：US12380889
申请日：2009-03-03
IPC分类号： A61B8/06
CPC分类号： A61B8/06 , A61B5/02007 , G01S15/8927 , G01S15/8979 , G01S15/8984
摘要： Peak blood velocity measurement for automated stenosis detection is provided. Ultrasound measurements of the peak blood velocity are corrected by a calculation of the Doppler angle, which exists from misalignment of the ultrasound transducer axis and the true blood velocity. The direction of the blood velocity and the Doppler angle are found by imaging a set of planar cross-sections of a blood vessel, such as the carotid artery, to obtain velocity maps of the blood flowing in the blood vessel. Peak blood velocity can be correlated with an amount of stenosis therefore accurate peak blood velocity measurements are necessary for medical diagnosis. Automated stenosis detection allows for implementation in many medical settings. A capacitive micromachined ultrasound transducer array is also provided to measure the planar cross-sectional images.
摘要翻译： 提供自动狭窄检测的峰值血液速度测量。 通过计算由超声换能器轴的未对准和真实血液速度存在的多普勒角来校正峰值血液速度的超声测量。 通过对血管如颈动脉的一组平面横截面进行成像来获得血液速度和多普勒角的方向，以获得在血管中流动的血液的速度图。 峰值血流速度可以与狭窄量相关，因此精确的峰值血液速度测量对于医学诊断是必需的。 自动狭窄检测允许在许多医疗设置中实现。 还提供电容微加工超声换能器阵列以测量平面横截面图像。
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