公开(公告)号：US10767637B2

公开(公告)日：2020-09-08

申请号：US15923496

申请日：2018-03-16

申请人： Sean Preston Wagner ,  Thomas Thundat

发明人： Sean Preston Wagner ,  Thomas Thundat

IPC分类号： F03G7/00 ,  F03G6/00 ,  F03H99/00

摘要： This patent seeks to describe a design and method of production of a solid state radiometric thruster for the intent of producing a new method of powered flight at varying scales of operation. By using modern nano-manufacturing techniques it is possible to create surface microstructures of the same size as the mean free path for gases at any desired operational pressure, allowing for radiometric forces to be harnessed for propulsion even when the total part dimensions are several orders of magnitude larger than would normally allow this effect to create a noticeable force.

公开(公告)号：US20200173898A1

公开(公告)日：2020-06-04

申请号：US16204303

申请日：2018-11-29

申请人： Selemani Seif ,  Kenneth Cadien ,  Thomas Thundat

发明人： Selemani Seif ,  Kenneth Cadien ,  Thomas Thundat

IPC分类号： G01N5/02 ,  G01N29/036 ,  G01G3/13

摘要： A measurement probe system is provided that includes a housing, a Quartz Crystal Microbalance (QCM) mass sensor in the housing, a first cover and a second cover attached to the ends of the housing. A chamber is defined between the housing, the mass sensor, and the second cover. An electrical input in electrical communication with the mass sensor and an electrical output in electrical communication with the second cover are also included. The measurement probe system is used to detect nanoparticle levels in an ionic solution includes inputting an ionic solution sample into the chamber, applying a frequency from a signal generator to the QCM via the electrical input, detecting frequency noises with the second cover and transmitting those frequency noises to a frequency counter via the electrical output, and assessing the level of nanoparticles present in the sample based on the frequency measured by the frequency counter.

公开(公告)号：US20050223806A1

公开(公告)日：2005-10-13

申请号：US11100839

申请日：2005-04-07

申请人： Thomas Thundat ,  Robert Warmack

发明人： Thomas Thundat ,  Robert Warmack

IPC分类号： G01N29/02 ,  G01N29/04 ,  G01N29/24

CPC分类号： G01N29/022 ,  G01N29/2418 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/0423 ,  G01N2291/0426 ,  G01N2291/0427

摘要： A surface wave chemical detector comprising at least one surface wave substrate, each of said substrates having a surface wave and at least one measurable surface wave parameter; means for exposing said surface wave substrate to an unknown sample of at least one chemical to be analyzed, said substrate adsorbing said at least one chemical to be sensed if present in said sample; a source of radiation for radiating said surface wave substrate with different wavelengths of said radiation, said surface wave parameter being changed by said adsorbing; and means for recording signals representative of said surface wave parameter of each of said surface wave substrates responsive to said radiation of said different wavelengths, measurable changes of said parameter due to adsorbing said chemical defining a unique signature of a detected chemical.

摘要翻译： 一种表面波化学检测器，包括至少一个表面波衬底，每个所述衬底具有表面波和至少一个可测量的表面波参数; 用于将所述表面波衬底暴露于待分析的至少一种化学物质的未知样品的装置，所述衬底在所述样品中吸附所述至少一种要被感测的化学物质; 用于辐射具有不同波长的所述辐射的所述表面波衬底的辐射源，所述表面波参数通过所述吸附而改变; 以及用于响应于所述不同波长的所述辐射记录表示每个所述表面波衬底的所述表面波参数的信号的装置，由于吸附所述化学物质而限定所检测化学物质的唯一标记，所述参数的可测量的变化。

公开(公告)号：US20050069461A1

公开(公告)日：2005-03-31

申请号：US10673716

申请日：2003-09-29

申请人： Thomas Thundat ,  Rubye Farahi ,  Thomas Ferrell ,  Zhiyu Hu

发明人： Thomas Thundat ,  Rubye Farahi ,  Thomas Ferrell ,  Zhiyu Hu

IPC分类号： B01F13/00 ,  B01L3/00 ,  F04B19/00 ,  F04B19/24 ,  B01L11/00

CPC分类号： F04B19/24 ,  B01F13/0059 ,  B01F13/0079 ,  B01L3/502792 ,  B01L2300/089 ,  B01L2300/165 ,  B01L2400/0406 ,  B01L2400/0442 ,  B01L2400/0448 ,  F04B19/006

摘要： A number of thermal elements are used in a microfluidic device to move or manipulate nano-liter and pico-liter amounts of adsorbed fluid analytes and reagents on the device surface. All of the basic microfluidic operations of transport, merge, subdivide, separate, sort, remove, and capture are provided. A typical device embodiment has a flat or curved surface with the thermal elements located at or near the surface and arranged in any of a number of patterns that make possible specific manipulations of the adsorbed fluids on the surface. The thermal elements may be electrical resistive heaters or Peltier Effect junctions, and are activated by a series of electrical pulses from a control means. The heated or cooled thermal elements produce localized thermal gradients in the surface which in turn induce a surface tension gradient between the adsorbed fluid and the surface, making possible a variety of fluid manipulations on the surface.

摘要翻译： 在微流体装置中使用许多热元件以在装置表面上移动或操纵纳升和微量的吸附流体分析物和试剂。 提供了运输，合并，细分，分离，排序，删除和捕获的所有基本微流控操作。 典型的装置实施例具有平坦或弯曲的表面，其中热元件位于表面处或附近，并以多种图案中的任何一种形式布置，这使得对表面上吸附的流体进行特定的操作。 热元件可以是电阻加热器或珀耳帖效应结，并且由来自控制装置的一系列电脉冲激活。 加热或冷却的热元件在表面产生局部热梯度，这又导致吸附流体和表面之间的表面张力梯度，使表面上的各种流体操纵成为可能。

公开(公告)号：US06167748A

公开(公告)日：2001-01-02

申请号：US09144309

申请日：1998-08-31

申请人： Charles L. Britton, Jr. ,  Robert J. Warmack ,  William L. Bryan ,  Robert L. Jones ,  Patrick Ian Oden ,  Thomas Thundat

发明人： Charles L. Britton, Jr. ,  Robert J. Warmack ,  William L. Bryan ,  Robert L. Jones ,  Patrick Ian Oden ,  Thomas Thundat

IPC分类号： G01B716

CPC分类号： G01B7/023 ,  G01D5/2417 ,  G01N27/227 ,  Y10S436/806

摘要： An improved multi-element apparatus for detecting the presence of at least one chemical, biological or physical component in a monitored area comprising an array or single set of the following elements: a capacitive transducer having at least one cantilever spring element secured thereto, the cantilever element having an area thereof coated with a chemical having an affinity for the component to be detected; a pick-up plate positioned adjacent to the cantilever element at a distance such that a capacitance between the cantilever element and the pick-up plate changes as the distance between the cantilever element and the pick-up plate varies, the change in capacitance being a measurable variation; a detection means for measuring the measurable variation in the capacitance between the cantilever element and the pick-up plate that forms a measurement channel signal; and at least one feedback cantilever spring element positioned apart from the coated cantilever element, the cantilever element substantially unaffected by the component being monitored and providing a reference channel signal to the detection means that achieves a common mode cancellation between the measurement channel signal and reference channel signal.

摘要翻译： 一种用于检测被监测区域中至少一种化学，生物或物理组分的存在的改进的多元件装置，包括阵列或单组以下元件：具有固定到其上的至少一个悬臂弹簧元件的电容换能器，所述悬臂 元件，其面积涂覆有对要检测的组分具有亲和性的化学品; 一个与悬臂元件相邻的拾取板，其距离使得悬臂元件和拾取板之间的电容随着悬臂元件和拾取板之间的距离而变化，电容的变化是 可测量变化; 用于测量形成测量通道信号的悬臂元件和拾取板之间的电容的可测量变化的检测装置; 以及至少一个反向悬臂弹簧元件，其与所述涂覆的悬臂元件分开定位，所述悬臂元件基本上不受所监视的部件的影响，并且向所述检测装置提供参考通道信号，所述参考通道信号实现所述测量通道信号和参考通道之间的共模消除 信号。