公开(公告)号：US08264941B2

公开(公告)日：2012-09-11

申请号：US11964580

申请日：2007-12-26

申请人： Quan Anh Tran ,  Byong M. Kim ,  Robert N. Stark ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao ,  Donald E. Adams ,  Li-Peng Wang ,  Yevgeny V. Anoikin

发明人： Quan Anh Tran ,  Byong M. Kim ,  Robert N. Stark ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao ,  Donald E. Adams ,  Li-Peng Wang ,  Yevgeny V. Anoikin

IPC分类号： G11B9/02

CPC分类号： G11B9/02 ,  B82Y10/00 ,  G11B9/1409

摘要： An arrangement, a method and a system to read information stored in a layer of ferroelectric media. The arrangement includes a layer including a ferroelectric media having one or more ferroelectric domains holding bit charges, a domain corresponding to information; a probe having a tip, wherein the media and the tip are adapted to move relative to one another such that the tip scans the ferroelectric domains of the media while applying a contact force to the domains to generate a direct piezoelectric effect within the domains; and circuitry coupled to the tip and adapted to generate a signal in response to an electrical coupling between the tip and the domains while scanning the tip in contact with the domains, the signal corresponding to a readout signal for ferroelectric bit charges stored in the media.

摘要翻译： 读取存储在铁电介质层中的信息的布置，方法和系统。 该布置包括具有一个或多个保持位电荷的铁电畴的铁电介质的层，对应于信息的畴; 具有尖端的探针，其中介质和尖端适于相对于彼此移动，使得尖端扫描介质的铁电畴，同时向畴施加接触力以在畴内产生直接压电效应; 以及耦合到所述尖端并且适于响应于所述尖端和所述域之间的电耦合而产生信号的电路，同时扫描与所述区域接触的尖端，所述信号对应于存储在所述介质中的铁电位电荷的读出信号。

公开(公告)号：US20090168635A1

公开(公告)日：2009-07-02

申请号：US11964608

申请日：2007-12-26

申请人： QUAN ANH TRAN ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao

发明人： QUAN ANH TRAN ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao

IPC分类号： G11B9/00 ,  B05D5/12

CPC分类号： G11B9/02

摘要： A memory media and a method to provide same. The memory media includes: a media layer comprising a ferroelectric layer having a bottom surface and a top surface; a plurality of adjacent charge domains defined in the ferroelectric layer, the domains including alternating up domains and down domains each extending between the bottom surface and the top surface; and a trapped charge region adjacent a top surface of the media layer, the trapped charge region including charges in addition to the charges present in the charge domains at regions thereof other than regions adjacent the top surface of the media layer.

摘要翻译： 一种记忆媒体和一种提供相同的方法。 存储介质包括：介质层，其包括具有底表面和顶表面的铁电层; 限定在铁电体层中的多个相邻的电荷域，所述畴包括各自在底表面和顶表面之间延伸的交替域和下畴; 以及与介质层的顶表面相邻的捕获的电荷区域，除了存在于电荷区域中的电荷之外，捕获的电荷区域还包括除了与介质层的顶表面相邻的区域之外的区域中的电荷。

公开(公告)号：US20130003521A1

公开(公告)日：2013-01-03

申请号：US13608878

申请日：2012-09-10

申请人： Quan Anh Tran ,  Byong M. Kim ,  Robert N. Stark ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao ,  Donald E. Adams ,  Li-Peng Wang ,  Yevgeny V. Anoikin

发明人： Quan Anh Tran ,  Byong M. Kim ,  Robert N. Stark ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao ,  Donald E. Adams ,  Li-Peng Wang ,  Yevgeny V. Anoikin

IPC分类号： G11B9/02

CPC分类号： G11B9/02 ,  B82Y10/00 ,  G11B9/1409

摘要： An arrangement, a method and a system to read information stored in a layer of ferroelectric media. The arrangement includes a layer including a ferroelectric media having one or more ferroelectric domains holding bit charges, a domain corresponding to information; a probe having a tip, wherein the media and the tip are adapted to move relative to one another such that the tip scans the ferroelectric domains of the media while applying a contact force to the domains to generate a direct piezoelectric effect within the domains; and circuitry coupled to the tip and adapted to generate a signal in response to an electrical coupling between the tip and the domains while scanning the tip in contact with the domains, the signal corresponding to a readout signal for ferroelectric bit charges stored in the media

摘要翻译： 读取存储在铁电介质层中的信息的布置，方法和系统。 该布置包括具有一个或多个保持位电荷的铁电畴的铁电介质的层，对应于信息的畴; 具有尖端的探针，其中介质和尖端适于相对于彼此移动，使得尖端扫描介质的铁电畴，同时向畴施加接触力以在畴内产生直接压电效应; 以及耦合到所述尖端并且适于响应于所述尖端和所述域之间的电耦合而产生信号的电路，同时扫描与所述区域接触的尖端，所述信号对应于存储在所述介质中的铁电位电荷的读出信号

公开(公告)号：US20090168637A1

公开(公告)日：2009-07-02

申请号：US11964580

申请日：2007-12-26

申请人： Quan Anh Tran ,  Byong M. Kim ,  Robert N. Stark ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao ,  Donald E. Adams ,  Li-Peng Wang ,  Yevgeny V. Anoikin

发明人： Quan Anh Tran ,  Byong M. Kim ,  Robert N. Stark ,  Nathan R. Franklin ,  Qing Ma ,  Valluri Rao ,  Donald E. Adams ,  Li-Peng Wang ,  Yevgeny V. Anoikin

IPC分类号： G11B3/00

CPC分类号： G11B9/02 ,  B82Y10/00 ,  G11B9/1409

摘要： An arrangement, a method and a system to read information stored in a layer of ferroelectric media. The arrangement includes a layer including a ferroelectric media having one or more ferroelectric domains holding bit charges, a domain corresponding to information; a probe having a tip, wherein the media and the tip are adapted to move relative to one another such that the tip scans the ferroelectric domains of the media while applying a contact force to the domains to generate a direct piezoelectric effect within the domains; and circuitry coupled to the tip and adapted to generate a signal in response to an electrical coupling between the tip and the domains while scanning the tip in contact with the domains, the signal corresponding to a readout signal for ferroelectric bit charges stored in the media

摘要翻译： 读取存储在铁电介质层中的信息的布置，方法和系统。 该布置包括具有一个或多个保持位电荷的铁电畴的铁电介质的层，对应于信息的畴; 具有尖端的探针，其中介质和尖端适于相对于彼此移动，使得尖端扫描介质的铁电畴，同时向畴施加接触力以在畴内产生直接压电效应; 以及耦合到所述尖端并且适于响应于所述尖端和所述域之间的电耦合而产生信号的电路，同时扫描与所述区域接触的尖端，所述信号对应于存储在所述介质中的铁电位电荷的读出信号

公开(公告)号：US07782649B2

公开(公告)日：2010-08-24

申请号：US11961973

申请日：2007-12-20

申请人： Quan Anh Tran ,  Valluri R. Rao ,  Qing Ma

发明人： Quan Anh Tran ,  Valluri R. Rao ,  Qing Ma

IPC分类号： G11C11/22

CPC分类号： G11B9/02

摘要： Using controlled bias voltage for data retention enhancement in a ferroelectric media is generally described. In one example, an apparatus includes a ferroelectric film including one or more domains, the ferroelectric film having a first surface and a second surface, the first surface being opposite the second surface, an electrode coupled with the first surface, and an electrically conductive thin film coupled with the second surface wherein the electrically conductive thin film is sufficiently conductive that a controlled bias field applied between the electrically conductive thin film and the electrode is sufficient to grow, shrink, or actively maintain the size of the one or more domains disposed between the electrically conductive thin film and the electrode.

摘要翻译： 一般来说，在铁电介质中使用受控偏置电压用于数据保持增强。 在一个示例中，一种装置包括具有一个或多个畴的铁电体膜，所述铁电膜具有第一表面和第二表面，所述第一表面与所述第二表面相对，与所述第一表面耦合的电极和导电薄膜 与第二表面耦合的膜，其中导电薄膜具有足够的导电性，使得施加在导电薄膜和电极之间的受控偏压场足以生长，收缩或主动地保持设置在导电薄膜和电极之间的一个或多个畴的尺寸 导电薄膜和电极。

公开(公告)号：US20090161523A1

公开(公告)日：2009-06-25

申请号：US11961973

申请日：2007-12-20

申请人： Quan Anh Tran ,  Valluri R. Rao ,  Qing Ma

发明人： Quan Anh Tran ,  Valluri R. Rao ,  Qing Ma

IPC分类号： G11B9/00

CPC分类号： G11B9/02

摘要： Using controlled bias voltage for data retention enhancement in a ferroelectric media is generally described. In one example, an apparatus includes a ferroelectric film including one or more domains, the ferroelectric film having a first surface and a second surface, the first surface being opposite the second surface, an electrode coupled with the first surface, and an electrically conductive thin film coupled with the second surface wherein the electrically conductive thin film is sufficiently conductive that a controlled bias field applied between the electrically conductive thin film and the electrode is sufficient to grow, shrink, or actively maintain the size of the one or more domains disposed between the electrically conductive thin film and the electrode.

摘要翻译： 一般来说，在铁电介质中使用受控偏置电压用于数据保持增强。 在一个示例中，一种装置包括具有一个或多个畴的铁电体膜，所述铁电膜具有第一表面和第二表面，所述第一表面与所述第二表面相对，与所述第一表面耦合的电极和导电薄膜 与第二表面耦合的膜，其中导电薄膜具有足够的导电性，使得施加在导电薄膜和电极之间的受控偏压场足以生长，收缩或主动地保持设置在导电薄膜和电极之间的一个或多个畴的尺寸 导电薄膜和电极。

公开(公告)号：US07952982B2

公开(公告)日：2011-05-31

申请号：US12215992

申请日：2008-06-30

申请人： Robert Chen ,  Qing Ma ,  Valluri Rao

发明人： Robert Chen ,  Qing Ma ,  Valluri Rao

IPC分类号： G11B9/00

CPC分类号： G11B9/02 ,  G11B9/065

摘要： A data storage medium includes a piezoelectric film (101) having a surface (111) including a halogen. In one embodiment, the halogen exists in an atomic concentration of at least approximately 10 percent. The result is a hydrophobic surface conducive to long-lasting scanning probe tips, low contamination, and stable surface charge. A data storage device incorporating the data storage medium includes an enclosure (205) containing the data storage medium and an adjacent scanning probe (230) wherein the enclosure has a relative humidity of at least approximately 40 percent and at least a portion of the scanning probe is coated with a layer of water.

摘要翻译： 数据存储介质包括具有包括卤素的表面（111）的压电膜（101）。 在一个实施方案中，卤素以至少约10％的原子浓度存在。 其结果是疏水性表面有利于长时间的扫描探针尖端，低污染和稳定的表面电荷。 结合数据存储介质的数据存储设备包括容纳数据存储介质的外壳（205）和相邻的扫描探针（230），其中外壳具有至少大约40％的相对湿度和扫描探针的至少一部分 涂有一层水。

公开(公告)号：US07358579B2

公开(公告)日：2008-04-15

申请号：US10185283

申请日：2002-06-28

申请人： Qing Ma ,  Tsung-Kuan Allen Chou ,  Valluri Rao

发明人： Qing Ma ,  Tsung-Kuan Allen Chou ,  Valluri Rao

IPC分类号： H01L21/00 ,  H01L29/82

CPC分类号： H01H59/0009 ,  B81B3/007 ,  B81B2201/014 ,  B81B2201/0271 ,  B81B2203/0118 ,  B81B2203/0353 ,  B81B2203/04 ,  B81C2201/056 ,  H01H1/20 ,  H01H2001/0084 ,  H01H2059/0036 ,  H01H2059/0063

摘要： A microelectromechanical system switch may include a relatively stiff cantilevered beam coupled, on its free end, to a more compliant or flexible extension. A contact may be positioned at the free end of the cantilevered beam. The extension reduces the actuation voltage that is needed and compensates for the relative stiffness of the cantilevered beam in closing the switch. In opening the switch, the stiffness of the cantilevered beam may advantageously enable quicker operation which may be desirable in higher frequency situations.

摘要翻译： 微机电系统开关可以包括在其自由端上耦合到更顺从或柔性延伸部的相对刚性的悬臂梁。 触点可以位于悬臂梁的自由端。 该延伸部分减小了所需的致动电压，并补偿了关闭开关时悬臂梁的相对刚度。 在打开开关时，悬臂梁的刚度可以有利地实现更快的操作，这在更高的频率情况下是可取的。

公开(公告)号：US20060001329A1

公开(公告)日：2006-01-05

申请号：US10882510

申请日：2004-06-30

申请人： Valluri Rao ,  Qing Ma ,  Quan Tran ,  Dong Shim ,  Li-Peng Wang

发明人： Valluri Rao ,  Qing Ma ,  Quan Tran ,  Dong Shim ,  Li-Peng Wang

IPC分类号： H01L41/08

CPC分类号： H03H9/02102 ,  H03H2009/02196

摘要： A film bulk acoustic resonator (FBAR) comprises a piezoelectric film sandwiched between a top electrode and a bottom electrode. A temperature sensor is provided to sense a temperature to determine a temperature induced frequency drift for the FBAR. A voltage controller operatively connected to the temperature sensor supplies a direct current (DC) bias voltage to the FBAR to induce an opposite voltage induced frequency drift to compensate for the temperature induced frequency drift.

摘要翻译： 薄膜体声波谐振器（FBAR）包括夹在顶部电极和底部电极之间的压电薄膜。 提供温度传感器以感测温度以确定FBAR的温度感应频率漂移。 可操作地连接到温度传感器的电压控制器向FBAR提供直流（DC）偏置电压以引起相反的电压感应频率漂移以补偿温度引起的频率漂移。

公开(公告)号：US20050148065A1

公开(公告)日：2005-07-07

申请号：US10749529

申请日：2003-12-30

申请人： Yuegang Zhang ,  Andrew Berlin ,  Qing Ma ,  Li-Peng Wang ,  Valluri Rao ,  Mineo Yamakawa

发明人： Yuegang Zhang ,  Andrew Berlin ,  Qing Ma ,  Li-Peng Wang ,  Valluri Rao ,  Mineo Yamakawa

IPC分类号： G01N29/02 ,  G01N29/036 ,  G01N29/34 ,  G01N33/543 ,  C12M1/34

CPC分类号： G01N33/54373 ,  B82Y15/00 ,  B82Y30/00 ,  G01N27/126 ,  G01N29/022 ,  G01N29/036 ,  G01N29/2437 ,  G01N29/348 ,  G01N33/0031 ,  G01N2291/02466 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/0426 ,  Y10T436/11 ,  Y10T436/143333 ,  Y10T436/144444 ,  Y10T436/25375

摘要： Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to react with target molecules, thereby changing the mass and/or charge of the resonator which consequently changes the frequency response of the resonator. The resonator's frequency response after exposure to a sample is compared to a reference, such as the frequency response before exposure to the sample, a stored baseline frequency response or a control resonator's frequency response.

摘要翻译： 使用包含具有功能化表面以与靶生物分子反应的共振器的生物传感器来检测样品中存在生物分子的系统和方法。 在一个实施例中，器件包括压电谐振器，其具有被配置为与靶分子反应的官能化表面，从而改变谐振器的质量和/或电荷，从而改变谐振器的频率响应。 将曝光后的谐振器频率响应与参考值进行比较，例如在暴露于采样之前的频率响应，存储的基准频率响应或控制谐振器的频率响应。