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29 条记录 (耗时 0.019 秒)

    Polymer-polymer bilayer actuator
    1.
    发明授权
    Polymer-polymer bilayer actuator 失效
    聚合物 - 聚合物双层致动器

    公开(公告)号：US06545391B1

    公开(公告)日：2003-04-08

    申请号：US09696524

    申请日：2000-10-23

    申请人： Ji Su ,  Joycelyn S. Harrison ,  Terry L. St. Clair

    发明人： Ji Su ,  Joycelyn S. Harrison ,  Terry L. St. Clair

    IPC分类号： H01L4109

    CPC分类号： F03G7/06 ,  F03G7/065 ,  H01L41/094 ,  H01L41/193 ,  Y10S310/80

    摘要： A device for providing an electromechanical response includes two polymeric webs bonded to each other along their lengths. At least one polymeric web is activated upon application thereto of an electric field and exhibits electrostriction by rotation of polar graft moieties within the polymeric web. In one embodiment, one of the two polymeric webs in an active web upon application thereto of the electric field, and the other polymeric web is a non-active web upon application thereto of the electric field. In another embodiment, both of the two polymeric webs are capable of being active webs upon application thereto of the electric field. However, these two polymeric webs are alternately activated and non-activated by the electric field.

    摘要翻译： 用于提供机电响应的装置包括沿其长度彼此结合的两个聚合物网。 至少一个聚合物纤维网在施加电场时被激活，并且通过旋转聚合物网内的极性接枝部分显示电致伸缩。 在一个实施方案中，当施加到电场上时，活性纤维网中的两个聚合物网中的一个是电场施加时的非活性纤维网。 在另一个实施方案中，两个聚合物网络都可以在施加到电场上时成为活性纤维网。 然而，这两个聚合物网络被电场交替活化并且不被活化。

    Polymeric blends for sensor and actuation dual functionality
    2.
    发明授权
    Polymeric blends for sensor and actuation dual functionality 失效
    用于传感器和驱动双重功能的聚合物混合物

    公开(公告)号：US06689288B2

    公开(公告)日：2004-02-10

    申请号：US10014158

    申请日：2001-11-28

    申请人： Terry L. St. Clair ,  Joycelyn S. Harrison ,  Ji Su ,  Zoubeida Ounaies

    发明人： Terry L. St. Clair ,  Joycelyn S. Harrison ,  Ji Su ,  Zoubeida Ounaies

    IPC分类号： H01B112

    CPC分类号： H01L41/193 ,  C08F259/00 ,  C08L27/16 ,  C08L51/06 ,  H01L27/14625 ,  H01L41/0926 ,  C08L2666/24 ,  C08L2666/04

    摘要： The invention described herein supplies a new class of electroactive polymeric blend materials which offer both sensing and actuation dual functionality. The blend comprises two components, one component having a sensing capability and the other component having an actuating capability. These components should be co-processable and coexisting in a phase separated blend system. Specifically, the materials are blends of a sensing component selected from the group consisting of ferroelectric, piezoelectric, pyroelectric and photoelectric polymers and an actuating component that responds to an electric field in terms of dimensional change. Said actuating component includes, but is not limited to, electrostrictive graft elastomers, dielectric electroactive elastomers, liquid crystal electroactive elastomers and field responsive polymeric gels. The sensor functionality and actuation functionality are designed by tailoring the relative fraction of the two components. The temperature dependence of the piezoelectric response and the mechanical toughness of the dual functional blends are also tailored by the composition adjustment.

    摘要翻译： 本文描述的本发明提供了一类新的电活性聚合物共混材料，其提供了感测和致动双重功能。 共混物包括两个组分，一个组分具有感测能力，另一个组分具有致动能力。 这些组分应该是可共处理的并且在相分离的共混体系中共存。 具体地说，这些材料是从由铁电体，压电体，热电和光电聚合物组成的组中选择的感测组件和在尺寸变化方面对电场作出响应的致动组件的共混物。 所述致动组件包括但不限于电致伸缩接枝弹性体，介电电活性弹性体，液晶电活性弹性体和场响应聚合物凝胶。 传感器功能和致动功能通过调整两个部件的相对部分来设计。 双功能混合物的压电响应的温度依赖性和机械韧性也通过组合物调节来调整。

    Electrostrictive graft elastomers
    3.
    发明授权
    Electrostrictive graft elastomers 失效
    电致伸缩性接枝弹性体

    公开(公告)号：US06515077B1

    公开(公告)日：2003-02-04

    申请号：US09696528

    申请日：2000-10-23

    申请人： Ji Su ,  Joycelyn S. Harrison ,  Terry L. St. Clair

    发明人： Ji Su ,  Joycelyn S. Harrison ,  Terry L. St. Clair

    IPC分类号： C08F25908

    CPC分类号： H01Q15/147 ,  C08F255/10 ,  C08F259/00 ,  C08F259/08 ,  C08F265/08 ,  C08F273/00 ,  C08F283/006 ,  C08F283/12 ,  C08F291/00 ,  H01L41/0926 ,  H01L41/0973 ,  H01L41/193

    摘要： An electrostrictive graft elastomer has a backbone molecule which is a non-crystallizable, flexible macromolecular chain and a grafted polymer forming polar graft moieties with backbone molecules. The polar graft moieties have been rotated by an applied electric field, e.g., into substantial polar alignment. The rotation is sustained until the electric field is removed. In another embodiment, a process for producing strain in an elastomer includes: (a) providing a graft elastomer having a backbone molecule which is a non-crystallizable, flexible macromolecular chain and a grafted polymer forming polar graft moieties with backbone molecules; and (b) applying an electric field to the graft elastomer to rotate the polar graft moieties, e.g., into substantial polar alignment.

    摘要翻译： 电致伸缩接枝弹性体具有骨架分子，其是不可结晶的柔性高分子链，并且接枝聚合物形成具有主链分子的极性接枝部分。 极性接枝部分已经通过施加的电场旋转，例如进入基本极性对准。 旋转持续直到电场被去除。 在另一个实施方案中，用于在弹性体中制备应变的方法包括：（a）提供具有主链分子的接枝弹性体，所述骨架分子是不可结晶的柔性大分子链，和接枝聚合物形成具有主链分子的极性接枝部分; 和（b）向接枝弹性体施加电场以旋转极性接枝部分，例如进入基本的极性取向。

    Non-uniform thickness electroactive device
    4.
    发明授权
    Non-uniform thickness electroactive device 失效
    不均匀厚度的电活性器件

    公开(公告)号：US07015624B1

    公开(公告)日：2006-03-21

    申请号：US09696526

    申请日：2000-10-23

    申请人： Ji Su ,  Joycelyn S. Harrison

    发明人： Ji Su ,  Joycelyn S. Harrison

    IPC分类号： H01L41/08

    CPC分类号： H01Q15/147 ,  C08F255/10 ,  C08F259/00 ,  C08F259/08 ,  C08F265/08 ,  C08F273/00 ,  C08F283/006 ,  C08F283/12 ,  H01L41/094 ,  H01L41/0973 ,  H01L41/193

    摘要： An electroactive device comprises at least two layers of material, wherein at least one layer is an electroactive material and wherein at least one layer is of non-uniform thickness. The device can be produced in various sizes, ranging from large structural actuators to microscale or nanoscale devices. The applied voltage to the device in combination with the non-uniform thickness of at least one of the layers (electroactive and/or non-electroactive) controls the contour of the actuated device. The effective electric field is a mathematical function of the local layer thickness. Therefore, the local strain and the local bending/torsion curvature are also a mathematical function of the local thickness. Hence the thinnest portion of the actuator offers the largest bending and/or torsion response. Tailoring of the layer thicknesses can enable complex motions to be achieved.

    摘要翻译： 电活性器件包括至少两层材料，其中至少一层是电活性材料，并且其中至少一层具有不均匀的厚度。 该装置可以生产各种尺寸，从大型结构致动器到微尺寸或纳米级装置。 结合至少一个层（电活性和/或非电活性）的非均匀厚度的装置施加的电压控制致动装置的轮廓。 有效电场是局部层厚度的数学函数。 因此，局部应变和局部弯曲/扭曲曲率也是局部厚度的数学函数。 因此，致动器的最薄部分提供最大的弯曲和/或扭转响应。 层厚度的裁剪可以实现复杂的运动。

    Membrane position control
    6.
    发明授权
    Membrane position control 失效
    膜位置控制

    公开(公告)号：US06724130B1

    公开(公告)日：2004-04-20

    申请号：US09696523

    申请日：2000-10-23

    申请人： Ji Su ,  Joycelyn S. Harrison

    发明人： Ji Su ,  Joycelyn S. Harrison

    IPC分类号： H01L4108

    CPC分类号： H01Q15/147 ,  C08F255/10 ,  C08F259/00 ,  C08F259/08 ,  C08F265/08 ,  C08F273/00 ,  C08F283/006 ,  C08F283/12 ,  H01L41/053 ,  H01L41/094 ,  H01L41/193

    摘要： A membrane structure includes at least one electroactive bending actuator fixed to a supporting base. Each electroactive bending actuator is operatively connected to the membrane for controlling membrane position. Any displacement of each electroactive bending actuator effects displacement of the membrane. More specifically, the operative connection is provided by a guiding wheel assembly and a track, wherein displacement of the bending actuator effects translation of the wheel assembly along the track, thereby imparting movement to the membrane.

    摘要翻译： 膜结构包括固定到支撑基底的至少一个电活性弯曲致动器。 每个电动弯曲致动器可操作地连接到膜以控制膜位置。 每个电动弯曲致动器的任何位移都会影响膜的位移。 更具体地，操作连接由导轮组件和轨道提供，其中弯曲致动器的位移实现轮组件沿着轨道的平移，由此赋予膜的运动。

    HYBRID PIEZOELECTRIC ENERGY HARVESTING TRANSDUCER SYSTEM
    7.
    发明申请
    HYBRID PIEZOELECTRIC ENERGY HARVESTING TRANSDUCER SYSTEM 有权
    混合压电式能量收集传感器系统

    公开(公告)号：US20080238260A1

    公开(公告)日：2008-10-02

    申请号：US11486200

    申请日：2006-07-13

    申请人： Tian-Bing Xu ,  Xiaoning Jiang ,  Ji Su ,  Paul W. Rehrig ,  Wesley S. Hackenberger

    发明人： Tian-Bing Xu ,  Xiaoning Jiang ,  Ji Su ,  Paul W. Rehrig ,  Wesley S. Hackenberger

    IPC分类号： H01L41/113

    CPC分类号： H01L41/1138 ,  H02N2/18

    摘要： A hybrid piezoelectric energy harvesting transducer system includes: (a) first and second symmetric, pre-curved piezoelectric elements mounted separately on a frame so that their concave major surfaces are positioned opposite to each other; and (b) a linear piezoelectric element mounted separately on the frame and positioned between the pre-curved piezoelectric elements. The pre-curved piezoelectric elements and the linear piezoelectric element are spaced from one another and communicate with energy harvesting circuitry having contact points on the frame. The hybrid piezoelectric energy harvesting transducer system has a higher electromechanical energy conversion efficiency than any known piezoelectric transducer.

    摘要翻译： 混合压电能量收集换能器系统包括：（a）分别安装在框架上的第一和第二对称预弯曲压电元件，使得它们的凹形主表面彼此相对定位; 和（b）分别安装在框架上并位于预弯曲的压电元件之间的线性压电元件。 预弯曲的压电元件和线性压电元件彼此间隔开并与具有框架上的接触点的能量收集电路连通。 混合压电能量收集换能器系统具有比任何已知的压电换能器更高的机电能量转换效率。

    Advanced High Performance Horizontal Piezoelectric Hybrid Synthetic Jet Actuator
    10.
    发明申请
    Advanced High Performance Horizontal Piezoelectric Hybrid Synthetic Jet Actuator 有权
    先进的高性能水平压电混合合成喷气致动器

    公开(公告)号：US20100045752A1

    公开(公告)日：2010-02-25

    申请号：US12355782

    申请日：2009-01-18

    申请人： Tian-Bing Xu ,  Xiaoning Jiang ,  Ji Su

    发明人： Tian-Bing Xu ,  Xiaoning Jiang ,  Ji Su

    IPC分类号： B41J2/045

    CPC分类号： F15D1/12 ,  B64C21/04 ,  B64C2230/18 ,  Y02T50/166 ,  Y10S239/19

    摘要： The present invention comprises a high performance, horizontal, zero-net mass-flux, synthetic jet actuator for active control of viscous, separated flow on subsonic and supersonic vehicles. The present invention is a horizontal piezoelectric hybrid zero-net mass-flux actuator, in which all the walls of the chamber are electrically controlled synergistically to reduce or enlarge the volume of the synthetic jet actuator chamber in three dimensions simultaneously and to reduce or enlarge the diameter of orifice of the synthetic jet actuator simultaneously with the reduction or enlargement of the volume of the chamber. The present invention is capable of installation in the wing surface as well as embedding in the wetted surfaces of a supersonic inlet. The jet velocity and mass flow rate for the SJA-H will be several times higher than conventional piezoelectric actuators.

    摘要翻译： 本发明包括用于主动控制亚音速和超音速车辆上的粘性分离流的高性能，水平，零净质量流量合成射流致动器。 本发明是一种水平压电混合零网质量磁通致动器，其中所有的腔室的壁均被协同地电控制，以同时缩小或扩大合成射流致动器室的三维体积并减小或扩大 合成射流致动器的孔口直径与室的体积的减小或增大同时。 本发明能够安装在机翼表面以及嵌入超音速入口的润湿表面中。 SJA-H的喷射速度和质量流量将比传统的压电致动器高几倍。