公开(公告)号：USD662430S1

公开(公告)日：2012-06-26

申请号：US29365550

申请日：2010-07-09

Applicant: Mark J. Hagmann

Designer： Mark J. Hagmann

公开(公告)号：US20110074293A1

公开(公告)日：2011-03-31

申请号：US12566972

申请日：2009-09-25

Applicant: Mark J. Hagmann

Inventor： Mark J. Hagmann

IPC: H01J7/44

CPC classification number: H01J1/304

Abstract: Field emission devices utilizing capacitive ballasting are described with possible uses in industry. The preferred device utilizes opposing electrodes, each with a dielectric layer and a plurality of conductive islands which serve to exchange electrons, generating an oscillatory current. Ideally these islands are dome-shaped and made of a refractory metal such as tungsten of molybdenum. Through proper use and selection of materials, electrical fields with densities of 1014 A/m2 are capable of being generated.

Abstract translation: 使用电容式镇流器的场致发射器件可以用于工业中的可能用途。 优选的器件利用相对的电极，每个电极具有用于交换电子的电介质层和多个导电岛，产生振荡电流。 理想情况下，这些岛是圆顶形的，由难熔金属如钼的钨制成。 通过正确使用和选择材料，可以产生密度为1014A / m2的电场。

公开(公告)号：US07613578B2

公开(公告)日：2009-11-03

申请号：US11759555

申请日：2007-06-07

Applicant: Mark J. Hagmann

Inventor： Mark J. Hagmann

IPC: G01R19/00 ,  G01N27/00

CPC classification number: G01R15/188 ,  G01R15/183

Abstract: A method of non-invasive determination of electrical current distribution is disclosed. The method utilizes mathematical calculations on data obtained by a probe with non-uniformly wound detection coil. While non-uniform, the coil winding is specific according to a known and determined function, such as a sinusoidal variation. As a further method, the probe may rotate about an area of interest and the data then may be subjected to a Fourier analysis for further refined results. Multiple coils may be used in the probe, each with a different coil function which could include one uniform coil. Also disclosed is a method for making the coils necessary in the practice of the method.

Abstract translation: 公开了一种非侵入式确定电流分布的方法。 该方法利用通过具有非均匀缠绕检测线圈的探针获得的数据进行数学计算。 虽然不均匀，但是线圈绕组根据已知和确定的功能是特定的，例如正弦变化。 作为另一种方法，探针可围绕感兴趣的区域旋转，然后数据可以进行傅里叶分析以获得进一步的精细结果。 可以在探头中使用多个线圈，每个具有不同的线圈功能，其可以包括一个均匀的线圈。 还公开了一种在实施该方法中制备线圈所需的方法。

公开(公告)号：US5113864A

公开(公告)日：1992-05-19

申请号：US188043

申请日：1988-04-29

Applicant: Mark J. Hagmann ,  Tadeusz M. Babij

Inventor： Mark J. Hagmann ,  Tadeusz M. Babij

IPC: G01R29/08 ,  A61B5/00 ,  A61B5/01 ,  A61B5/05 ,  A61N1/40

CPC classification number: A61B5/01 ,  A61B5/05 ,  G01R29/0878 ,  H01Q21/24 ,  H01Q9/16

Abstract: A catheter is used to insert a probe into a tumor undergoing hyperthermia treatment. The probe is designed to isotropically measure the electric field and temperature in the tumor during the hyperthermia treatment. The probe is constructed on a triangular prism and includes a dipole on each prism face oriented at an angle of 54.74 degrees relative to the axis of the prism. Each dipole includes rectifier means therein and the three dipoles are coupled serially using high resistivity lead means. In addition, high resistivity leads are used to couple the dipoles to a high input impedance amplifier. A pair of thermistors are coupled between the three dipoles, and high resistance lead means couple the thermistors to high input impedance amplifiers. A current source is used to provide current to the thermistors in a time shared manner when the electric field is not being measured. The probe may have a pair of beryllium oxide or diamond layers attached to the ends thereof against which the thermistors may be positioned. With the above construction, the total electric field may be measured as well as the temperature at two locations.

Abstract translation: 使用导管将探针插入进行高热治疗的肿瘤中。 探针设计用于在热疗期间各向同性地测量肿瘤中的电场和温度。 探头构造在三角形棱镜上，并且在每个棱镜面上包括相对于棱镜的轴线定向成54.74度的角度的偶极子。 每个偶极子包括其中的整流器装置，并且三个偶极子使用高电阻率引线装置串联耦合。 此外，高电阻率引线用于将偶极耦合到高输入阻抗放大器。 一对热敏电阻耦合在三个偶极子之间，高电阻引线装置将热敏电阻耦合到高输入阻抗放大器。 当电场未测量时，电流源用于以时间共享的方式向热敏电阻提供电流。 探针可以具有附接到其端部的一对氧化铍或金刚石层，热敏电阻可以定位在该端部上。 通过上述结构，可以测量总电场以及两个位置处的温度。

公开(公告)号：US4913153A

公开(公告)日：1990-04-03

申请号：US120076

申请日：1987-11-13

Applicant: Mark J. Hagmann ,  Tadeusz M. Babij

Inventor： Mark J. Hagmann ,  Tadeusz M. Babij

IPC: A61B5/05

CPC classification number: A61B5/05

Abstract: A current detector for detecting the high frequency current flowing in a conductor includes a coil of high resistivity material wound around an non-ferromagnetic core. The coil is arranged in a substantially closed loop configuration around the conductor carrying the current to be measured. The ratio of the winding spacing to the cross sectional area of the coil is maintained constant over the length of the winding. A shield of high resistivity material surrounds the coil and is spaced from the coils and the shield has a gap oriented along an azimuth of the closed loop winding and directed orthogonal to the net current direction of the current induced in the coil. The ends of the coil are coupled to a high impedance voltage detector through high resistivity leads and a relatively low value resistor is coupled between the leads to reduce the quality factor. The current detector may be used to detect current flowing in a human body due to the absorption of high frequency incident radiation as an indication of the specific absorption rate of such radiation.

Abstract translation: 用于检测在导体中流动的高频电流的电流检测器包括缠绕在非铁磁芯上的高电阻率材料的线圈。 线圈以围绕导体承载待测量电流的基本上闭合的环形结构布置。 绕组间距与线圈横截面积的比值在绕组长度上保持恒定。 高电阻率材料的屏蔽层围绕线圈并且与线圈间隔开，并且屏蔽件具有沿闭环绕组的方位定向的间隙，并且与线圈中感应的电流的净电流方向正交。 线圈的端部通过高电阻率引线耦合到高阻抗电压检测器，并且在引线之间耦合相对低值的电阻器以降低品质因数。 电流检测器可用于检测由于吸收高频入射辐射而在人体中流动的电流，作为这种辐射的比吸收率的指示。

公开(公告)号：US20180275164A1

公开(公告)日：2018-09-27

申请号：US15928712

申请日：2018-03-22

Applicant: Mark J. Hagmann

Inventor： Mark J. Hagmann

IPC: G01Q30/02 ,  G01Q60/12

CPC classification number: G01Q30/02 ,  G01Q60/12 ,  G01Q60/14

Abstract: The superimposition of a periodic potential wave to the tip movement control or the bias supply of an STM, in which a microwave frequency comb is generated in its tunneling junction, may be used to reduce or eliminate artifacts or other noise generated from outside the tunneling junction.

公开(公告)号：US09927461B2

公开(公告)日：2018-03-27

申请号：US15448151

申请日：2017-03-02

Applicant: Mark J. Hagmann

Inventor： Mark J. Hagmann

IPC: G01Q60/10 ,  G01Q10/04

CPC classification number: G01Q10/04 ,  G01Q60/10 ,  G01Q60/12

Abstract: A semiconductor carrier profiling method utilizes a scanning tunneling microscope and shielded probe with an attached spectrum analyzer to measure power loss of a microwave frequency comb generated in a tunneling junction. From this power loss and by utilizing an equivalent circuit or other model, spreading resistance may be determined and carrier density from the spreading resistance. The methodology is non-destructive of the sample and allows scanning across the surface of the sample. By not being destructive, additional analysis methods, like deconvolution, are available for use.

公开(公告)号：US20170199221A1

公开(公告)日：2017-07-13

申请号：US15369585

申请日：2016-12-05

Applicant: Mark J. Hagmann

Inventor： Mark J. Hagmann

IPC: G01Q60/10

CPC classification number: G01Q60/12

Abstract: A mode-locked laser injects pulses of minority carriers into a semiconductor sample. A microwave frequency comb is then generated by the currents formed in the movement of majority carriers native to the semiconductor and the injected minority carriers. These carriers move to cause dielectric relaxation in the sample, which can be used to determine carrier density within the sample. Measurements require close proximity of transmitter and receiver contacts with the sample and may profile a semi-conductor with a resolution of approximately 0.2 nm.

公开(公告)号：US20080275657A1

公开(公告)日：2008-11-06

申请号：US11759555

申请日：2007-06-07

Applicant: Mark J. Hagmann

Inventor： Mark J. Hagmann

IPC: G01R19/00

CPC classification number: G01R15/188 ,  G01R15/183

Abstract: A method of non-invasive determination of electrical current distribution is disclosed. The method utilizes mathematical calculations on data obtained by a probe with non-uniformly wound detection coil. While non-uniform, the coil winding is specific according to a known and determined function, such as a sinusoidal variation. As a further method, the probe may rotate about an area of interest and the data then may be subjected to a Fourier analysis for further refined results. Multiple coils may be used in the probe, each with a different coil function which could include one uniform coil. Also disclosed is a method for making the coils necessary in the practice of the method.

Abstract translation: 公开了一种非侵入式确定电流分布的方法。 该方法利用通过具有非均匀缠绕检测线圈的探针获得的数据进行数学计算。 虽然不均匀，但是线圈绕组根据已知和确定的功能是特定的，例如正弦变化。 作为另一种方法，探针可围绕感兴趣的区域旋转，然后数据可以进行傅里叶分析以获得进一步的精细结果。 可以在探头中使用多个线圈，每个具有不同的线圈功能，其可以包括一个均匀的线圈。 还公开了一种在实施该方法中制备线圈所需的方法。

公开(公告)号：US06566854B1

公开(公告)日：2003-05-20

申请号：US09646161

申请日：2000-09-12

Applicant: Mark J. Hagmann ,  John F. Sutton

Inventor： Mark J. Hagmann ,  John F. Sutton

IPC: G01R3300

CPC classification number: G01R15/183 ,  G01R29/0857

Abstract: An apparatus for measuring high frequency currents includes a non-ferrous core current probe that is coupled to a wide-band transimpedance amplifier. The current probe has a secondary winding with a winding resistance that is substantially smaller than the reactance of the winding. The sensitivity of the current probe is substantially flat over a wide band of frequencies. The apparatus is particularly useful for measuring exposure of humans to radio frequency currents.

Abstract translation: 用于测量高频电流的装置包括耦合到宽带跨阻抗放大器的非铁芯电流探头。 电流探头具有基本上小于绕组电抗的绕组电阻的次级绕组。 电流探头的灵敏度在宽频带内基本平坦。 该装置对于测量人类对射频电流的暴露是特别有用的。