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63 条记录 (耗时 0.033 秒)

    High Frequency Nanotube Oscillator
    31.
    发明申请
    High Frequency Nanotube Oscillator 有权
    高频纳米管振荡器

    公开(公告)号：US20100214034A1

    公开(公告)日：2010-08-26

    申请号：US12446231

    申请日：2007-10-19

    申请人： Hai-bing Peng ,  Alexander K. Zettl

    发明人： Hai-bing Peng ,  Alexander K. Zettl

    IPC分类号： H03B5/30 ,  H01L21/02

    CPC分类号： H03B7/00 ,  B82Y10/00 ,  H01L51/0048 ,  H01L51/0504 ,  Y10S977/742 ,  Y10S977/748 ,  Y10S977/847 ,  Y10S977/932

    摘要： A tunable nanostructure such as a nanotube is used to make an electromechanical oscillator. The mechanically oscillating nanotube can be provided with inertial clamps in the form of metal beads. The metal beads serve to clamp the nanotube so that the fundamental resonance frequency is in the microwave range, i.e., greater than at least 1 GHz, and up to 4 GHz and beyond. An electric current can be run through the nanotube to cause the metal beads to move along the nanotube and changing the length of the intervening nanotube segments. The oscillator can operate at ambient temperature and in air without significant loss of resonance quality. The nanotube is can be fabricated in a semiconductor style process and the device can be provided with source, drain, and gate electrodes, which may be connected to appropriate circuitry for driving and measuring the oscillation. Novel driving and measuring circuits are also disclosed.

    摘要翻译： 使用诸如纳米管的可调谐纳米结构来制造机电振荡器。 机械振荡纳米管可以设置有金属珠形式的惯性夹具。 金属珠用于夹紧纳米管，使得基本共振频率在微波范围内，即大于至少1GHz，高达4GHz及更高​​。 可以通过纳米管流过电流，使金属珠沿着纳米管移动并改变介入纳米管段的长度。 振荡器可以在环境温度和空气中工作，而不会明显损失谐振质量。 纳米管可以以半导体形式工艺制造，并且器件可以设置有源极，漏极和栅电极，其可以连接到用于驱动和测量振荡的适当电路。 还公开了新颖的驱动和测量电路。

    SOLID STATE THERMAL RECTIFIER
    32.
    发明申请
    SOLID STATE THERMAL RECTIFIER 有权
    固态热能整流器

    公开(公告)号：US20100167004A1

    公开(公告)日：2010-07-01

    申请号：US12444149

    申请日：2007-10-02

    申请人： Chih-Wei Chang ,  Arunava Majumdar ,  Alexander K. Zettl

    发明人： Chih-Wei Chang ,  Arunava Majumdar ,  Alexander K. Zettl

    IPC分类号： B32B5/02 ,  F28F27/00

    CPC分类号： H01L23/373 ,  B82Y10/00 ,  B82Y30/00 ,  C01B32/18 ,  F28F13/00 ,  F28F21/02 ,  F28F2013/008 ,  H01L2924/0002 ,  Y10T428/24091 ,  Y10T428/30 ,  H01L2924/00

    摘要： Thermal rectifiers using linear nanostructures as core thermal conductors have been fabricated. A high mass density material is added preferentially to one end of the nanostructures to produce an axially non-uniform mass distribution. The resulting nanoscale system conducts heat asymmetrically with greatest heat flow in the direction of decreasing mass density. Thermal rectification has been demonstrated for linear nanostructures that are electrical insulators, such as boron nitride nanotubes, and for nanostructures that are conductive, such as carbon nanotubes.

    摘要翻译： 已经制造了使用线性纳米结构作为芯导热体的热整流器。 将高质量密度材料优先添加到纳米结构的一端以产生轴向不均匀的质量分布。 所得到的纳米尺度系统在质量密度降低的方向上以最大的热流不对称地传导热。 对于诸如氮化硼纳米管的电绝缘体和用于导电的纳米结构例如碳纳米管的线性纳米结构已经证明了热矫正。

    Graphene-based structure, method of suspending graphene membrane, and method of depositing material onto graphene membrane
    33.
    发明申请
    Graphene-based structure, method of suspending graphene membrane, and method of depositing material onto graphene membrane 有权
    基于石墨烯的结构，悬浮石墨烯膜的方法和在石墨烯膜上沉积材料的方法

    公开(公告)号：US20090291270A1

    公开(公告)日：2009-11-26

    申请号：US12409938

    申请日：2009-03-24

    申请人： Alexander K. Zettl ,  Jannik Christian Meyer

    发明人： Alexander K. Zettl ,  Jannik Christian Meyer

    IPC分类号： B44C1/16 ,  B32B3/10 ,  B44C1/22 ,  C23C14/30

    CPC分类号： B81C99/008 ,  B01D71/021 ,  B81B2203/0127 ,  B81C2201/0191 ,  H01J37/20 ,  Y10T428/24562 ,  Y10T428/24802

    摘要： An embodiment of a method of suspending a graphene membrane across a gap in a support structure includes attaching graphene to a substrate. A pre-fabricated support structure having the gap is attached to the graphene. The graphene and the pre-fabricated support structure are then separated from the substrate which leaves the graphene membrane suspended across the gap in the pre-fabricated support structure. An embodiment of a method of depositing material includes placing a support structure having a graphene membrane suspended across a gap under vacuum. A precursor is adsorbed to a surface of the graphene membrane. A portion of the graphene membrane is exposed to a focused electron beam which deposits a material from the precursor onto the graphene membrane. An embodiment of a graphene-based structure includes a support structure having a gap, a graphene membrane suspended across the gap, and a material deposited in a pattern on the graphene membrane.

    摘要翻译： 将石墨烯膜悬浮在支撑结构中的间隙上的方法的实施例包括将石墨烯附着到基底上。 具有间隙的预制支撑结构附着在石墨烯上。 然后将石墨烯和预制的支撑结构与离开石墨烯膜的基板分离，悬浮在预制的支撑结构中的间隙上。 沉积材料的方法的一个实施例包括在真空下放置具有悬浮在间隙上的石墨烯膜的支撑结构。 前体被吸附到石墨烯膜的表面上。 石墨烯膜的一部分暴露于聚焦电子束，其将材料从前体沉积到石墨烯膜上。 基于石墨烯的结构的一个实施方案包括具有间隙的支撑结构，悬浮在间隙上的石墨烯膜以及以石墨烯膜上的图案沉积的材料。

    Nanoscale relaxation oscillator
    34.
    发明授权
    Nanoscale relaxation oscillator 有权
    纳米松弛振荡器

    公开(公告)号：US07515010B2

    公开(公告)日：2009-04-07

    申请号：US11245652

    申请日：2005-10-06

    申请人： Alexander K. Zettl ,  Brian C. Regan ,  Shaul Aloni

    发明人： Alexander K. Zettl ,  Brian C. Regan ,  Shaul Aloni

    IPC分类号： H03B5/30

    CPC分类号： B82Y15/00 ,  B82Y10/00 ,  H02N11/006 ,  Y10S977/725 ,  Y10S977/962

    摘要： A nanoscale oscillation device is disclosed, wherein two nanoscale droplets are altered in size by mass transport, then contact each other and merge through surface tension. The device may also comprise a channel having an actuator responsive to mechanical oscillation caused by expansion and contraction of the droplets. It further has a structure for delivering atoms between droplets, wherein the droplets are nanoparticles. Provided are a first particle and a second particle on the channel member, both being made of a chargeable material, the second particle contacting the actuator portion; and electrodes connected to the channel member for delivering a potential gradient across the channel and traversing the first and second particles. The particles are spaced apart a specified distance so that atoms from one particle are delivered to the other particle by mass transport in response to the potential (e.g. voltage potential) and the first and second particles are liquid and touch at a predetermined point of growth, thereby causing merging of the second particle into the first particle by surface tension forces and reverse movement of the actuator. In a preferred embodiment, the channel comprises a carbon nanotube and the droplets comprise metal nanoparticles, e.g. indium, which is readily made liquid.

    摘要翻译： 公开了一种纳米尺度振荡装置，其中两个纳米尺寸的液滴通过质量传输改变尺寸，然后彼此接触并通过表面张力合并。 该装置还可以包括具有响应于由液滴的膨胀和收缩引起的机械振荡的致动器的通道。 它还具有用于在液滴之间输送原子的结构，其中液滴是纳米颗粒。 提供在通道构件上的第一颗粒和第二颗粒，均由可带电材料制成，第二颗粒与致动器部分接触; 以及电极，其连接到所述通道构件，用于在所述通道上传递电位梯度并穿过所述第一和第二颗粒。 颗粒间隔开一定距离，使得来自一个颗粒的原子响应于电势（例如电压电位）通过质量传输被递送到另一个颗粒，并且第一和第二颗粒是液体并在预定的生长点处接触， 从而通过表面张力和致动器的反向运动将第二颗粒合并成第一颗粒。 在优选的实施方案中，通道包括碳纳米管，并且液滴包含金属纳米颗粒，例如。 铟容易制成液体。

    Nanoscale mass conveyors
    35.
    发明授权
    Nanoscale mass conveyors 有权
    纳米质量输送机

    公开(公告)号：US07341651B2

    公开(公告)日：2008-03-11

    申请号：US11085397

    申请日：2005-03-21

    申请人： Brian C. Regan ,  Shaul Aloni ,  Alexander K. Zettl

    发明人： Brian C. Regan ,  Shaul Aloni ,  Alexander K. Zettl

    IPC分类号： G01N27/447 ,  G01N27/453

    CPC分类号： H01L51/0595 ,  B82Y10/00 ,  B82Y30/00 ,  H01L51/0048 ,  Y10S977/962

    摘要： A mass transport method and device for individually delivering chargeable atoms or molecules from source particles is disclosed. It comprises a channel; at least one source particle of chargeable material fixed to the surface of the channel at a position along its length; a means of heating the channel; and a means for applying an controllable electric field along the channel, whereby the device transports the atoms or molecules along the channel in response to applied electric field. In a preferred embodiment, the mass transport device will comprise a multiwalled carbon nanotube (MWNT), although other one dimensional structures may also be used. The MWNT or other structure acts as a channel for individual or small collections of atoms due to the atomic smoothness of the material. Also preferred is a source particle of a metal such as indium. The particles move by dissociation into small units, in some cases, individual atoms. The particles are preferably less than 100 nm in size.

    摘要翻译： 公开了用于从源粒子单独递送可带电原子或分子的质量传递方法和装置。 它包括一个通道; 至少一个可充电材料源粒子沿其长度的位置固定在通道的表面上; 加热通道的一种手段; 以及用于沿通道施加可控电场的装置，由此该装置响应于所施加的电场沿着通道传输原子或分子。 在优选实施方案中，质量传递装置将包括多壁碳纳米管（MWNT），尽管也可以使用其它一维结构。 MWNT或其他结构由于材料的原子光滑度而作为单个或小的原子集合的通道。 还优选的是诸如铟的金属的源粒子。 颗粒通过解离移动成小单位，在某些情况下移动为单个原子。 颗粒的尺寸优选小于100nm。

    METHODS OF GENERATION OF PORES IN SHEETS OF HEXAGONAL BORON NITRIDE AND APPLICATIONS THEREOF
    37.
    发明申请
    METHODS OF GENERATION OF PORES IN SHEETS OF HEXAGONAL BORON NITRIDE AND APPLICATIONS THEREOF 审中-公开
    六角形硼酸盐片的生成方法及其应用

    公开(公告)号：US20160334366A1

    公开(公告)日：2016-11-17

    申请号：US15088549

    申请日：2016-04-01

    申请人： Alexander K. Zettl ,  Gabriel P. Dunn ,  Stephen M. Gilbert

    发明人： Alexander K. Zettl ,  Gabriel P. Dunn ,  Stephen M. Gilbert

    IPC分类号： G01N27/447 ,  G01N33/487 ,  C12Q1/68 ,  H01J37/305

    CPC分类号： C12Q1/6869 ,  G01N33/48721 ,  C12Q2565/631

    摘要： This disclosure provides systems, methods, and apparatus related to few-layer and monolayer hexagonal boron nitride having a pore therein. In one aspect, a method comprises providing a sheet of hexagonal boron nitride (h-BN). A defect is created in the sheet of h-BN. The sheet of h-BN is heated to a temperature above about 500° C. The defect in the sheet of h-BN is irradiated with charged particles to enlarge the defect to a hexagonal-shaped pore or a parallelogram-shaped pore in the sheet of h-BN.

    摘要翻译： 本公开提供了与其中具有孔的少层和单层六方氮化硼相关的系统，方法和装置。 一方面，一种方法包括提供一片六方氮化硼（h-BN）。 在h-BN片中产生缺陷。 将h-BN片加热到约500℃以上的温度。用带电粒子照射h-BN片中的缺陷，将缺陷扩大到片材中的六边形孔或平行四边形孔 的h-BN。

    LIQUID FLOW CELLS HAVING GRAPHENE ON NITRIDE FOR MICROSCOPY
    39.
    发明申请
    LIQUID FLOW CELLS HAVING GRAPHENE ON NITRIDE FOR MICROSCOPY 有权
    液氮在液氮中用于显微镜

    公开(公告)号：US20160042912A1

    公开(公告)日：2016-02-11

    申请号：US14817551

    申请日：2015-08-04

    申请人： Vivekananda P. Adiga ,  Gabriel Dunn ,  Alexander K. Zettl ,  A. Paul Alivisatos

    发明人： Vivekananda P. Adiga ,  Gabriel Dunn ,  Alexander K. Zettl ,  A. Paul Alivisatos

    IPC分类号： H01J37/20 ,  G02B1/12

    CPC分类号： H01J37/20 ,  C23C18/08 ,  G02B1/12 ,  G02B21/16 ,  H01J37/26 ,  H01J2237/2003 ,  H01J2237/2004 ,  H01L29/1606 ,  H01L29/66045 ,  Y10T29/49002

    摘要： This disclosure provides systems, methods, and apparatus related to liquid flow cells for microscopy. In one aspect, a device includes a substrate having a first and a second oxide layer disposed on surfaces of the substrate. A first and a second nitride layer are disposed on the first and second oxide layers, respectively. A cavity is defined in the first oxide layer, the first nitride layer, and the substrate, with the cavity including a third nitride layer disposed on walls of the substrate and the second oxide layer that define the cavity. A channel is defined in the second oxide layer. An inlet port and an outlet port are defined in the second nitride layer and in fluid communication with the channel. A plurality of viewports is defined in the second nitride layer. A first graphene sheet is disposed on the second nitride layer covering the plurality of viewports.

    摘要翻译： 本公开提供了与用于显微镜的液体流动池相关的系统，方法和装置。 一方面，一种器件包括具有设置在衬底表面上的第一和第二氧化物层的衬底。 第一和第二氮化物层分别设置在第一和第二氧化物层上。 在第一氧化物层，第一氮化物层和衬底中限定空腔，空腔包括设置在衬底的壁上的第三氮化物层和限定空腔的第二氧化物层。 在第二氧化物层中限定通道。 入口端口和出口限定在第二氮化物层中并与通道流体连通。 在第二氮化物层中限定多个视口。 第一石墨烯片被布置在覆盖多个视口的第二氮化物层上。