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公开(公告)号：US07701217B2
公开(公告)日：2010-04-20
申请号：US12187691
申请日：2008-08-07
IPC分类号： G01V3/00
CPC分类号： G01R33/34053 , G01R33/34007 , G01R33/34023 , G01R33/34069 , G01R33/34092 , G01R33/3628
摘要： RF electric fields produced by electric potential differences in NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and noise in NMR spectroscopy. Counter-wound spiral coils placed on the opposite surfaces of a planar substrate or on two adjacent planar substrates produce electric potentials that minimize the electric field over the sample region, thereby increasing the sensitivity of the NMR probe. Alternatively counter-wound spiral coils placed adjacent to each other on the outer surface of two concentric cylindrical surfaces that surround the NMR sample minimize the electric field over the sample region. The electric potential of the spiral coils is reduced by adjusting a length of at least one coil.
摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声。 放置在平面基板或两个相邻平面基板的相对表面上的反卷绕螺旋线圈产生使得样品区域上的电场最小化的电势，从而增加NMR探针的灵敏度。 或者在围绕NMR样品的两个同心圆柱形表面的外表面上彼此相邻放置的反卷绕螺旋线圈使得样品区域上的电场最小化。 通过调节至少一个线圈的长度来减小螺旋线圈的电位。
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公开(公告)号：US20100033184A1
公开(公告)日：2010-02-11
申请号：US12187691
申请日：2008-08-07
IPC分类号： G01R33/341
CPC分类号： G01R33/34053 , G01R33/34007 , G01R33/34023 , G01R33/34069 , G01R33/34092 , G01R33/3628
摘要： RF electric fields produced by electric potential differences in NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and noise in NMR spectroscopy. Counter-wound spiral coils placed on the opposite surfaces of a planar substrate or on two adjacent planar substrates produce electric potentials that minimize the electric field over the sample region, thereby increasing the sensitivity of the NMR probe. Alternatively counter-wound spiral coils placed adjacent to each other on the outer surface of two concentric cylindrical surfaces that surround the NMR sample minimize the electric field over the sample region. The electric potential of the spiral coils is reduced by adjusting a length of at least one coil.
摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声。 放置在平面基板或两个相邻平面基板的相对表面上的反卷绕螺旋线圈产生使得样品区域上的电场最小化的电势，从而增加NMR探针的灵敏度。 或者在围绕NMR样品的两个同心圆柱形表面的外表面上彼此相邻放置的反卷绕螺旋线圈使得样品区域上的电场最小化。 通过调节至少一个线圈的长度来减小螺旋线圈的电位。
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3.发明授权公开(公告)号：US06842004B2
公开(公告)日：2005-01-11
申请号：US10424687
申请日：2003-04-28
申请人： Richard S. Withers , Robert E. Nast
发明人： Richard S. Withers , Robert E. Nast
CPC分类号： G01R33/341 , G01R33/34007 , G01R33/34023 , G01R33/34061 , G01R33/34092
摘要： Improved superconducting coils for a nuclear magnetic resonance probe use capacitive elements that are located in regions further from an active sample volume than magnetic field generating elements to which they are electrically connected. The sample volume is a substantially oblong shape, and the magnetic field generating elements run substantially parallel to the major axis of the shape, while the capacitor elements run perpendicular to the major axis. Gaps between the capacitor elements, and the width of the elements themselves, may increase toward the outside of the coil to minimize electrical discharge. The variation may be according to a monotonic, possibly linear, function. Discharge may also be minimized by using a dielectric cover that, together with a coil substrate, encloses the coil.
摘要翻译： 用于核磁共振探针的改进的超导线圈使用位于比活动样品体积更远的区域的电容元件，而不是与它们电连接的磁场产生元件。 样品体积是基本上长方形的，并且磁场产生元件基本上平行于形状的长轴延伸，而电容器元件垂直于长轴延伸。 电容器元件之间的间隙和元件本身的宽度可能朝向线圈的外部增加以最小化放电。 该变化可以是根据单调的，可能是线性的。 也可以通过使用与线圈基板一起包围线圈的电介质盖来最小化放电。
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公开(公告)号：US5565778A
公开(公告)日：1996-10-15
申请号：US461559
申请日：1995-06-05
申请人： William W. Brey , Weston A. Anderson , Wai H. Wong , Luiz F. Fuks , Vincent Y. Kotsubo , Richard S. Withers
发明人： William W. Brey , Weston A. Anderson , Wai H. Wong , Luiz F. Fuks , Vincent Y. Kotsubo , Richard S. Withers
CPC分类号： G01R33/3628 , G01R33/34 , G01R33/34007 , H01G4/40 , G01R33/34023 , G01R33/34092 , G01R33/5604
摘要： A resonant coil for nuclear magnetic spectroscopy and microscopy is provided, in which the coil is in the form of nested, interrupted loops of a conductive material forming a distributed inductive element and having a plurality of capacitive elements with capacitance distributed over the periphery of the loops. The coil is preferably formed as a thin film of a superconductive material on an electrically nonconductive substrate.
摘要翻译： 提供了用于核磁谱和显微镜的共振线圈，其中线圈是形成分布式感应元件的导电材料的嵌套的中断环路的形式，并且具有多个电容元件，电容分布在环的周边 。 线圈优选地在非导电衬底上形成为超导材料的薄膜。
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5.发明授权AC magnetic susceptibility control of superconducting materials in nuclear magnetic resonance (NMR) probes 失效超导材料在核磁共振（NMR）探针中的交流磁化率控制
公开(公告)号：US5986453A
公开(公告)日：1999-11-16
申请号：US965842
申请日：1997-11-07
CPC分类号： G01R33/34053 , G01R33/34061 , G01R33/56536 , G01R33/34023 , G01R33/34092
摘要： A method and apparatus which utilizes the hysteritic behavior of type II superconductors is provided for reducing the effective magnetic susceptibility of such high temperature superconducting materials being used close to the sample region in nuclear magnetic resonance system probes by providing decaying AC changes in the magnetic field parallel to said superconductive material. The method is particularly applicable to receiver coils. Reducing the effective magnetic susceptibility of superconducting receiver coils enables the improved sensitivity they inherently provide to be realized without loss of resolution resulting from line broadening caused by susceptibility discontinuities of materials near the sample region of the probe.
摘要翻译： 提供利用II型超导体的迟滞行为的方法和装置，用于通过在磁场平行中提供衰减的AC变化来降低在核磁共振系统探针中靠近样品区域使用的这种高温超导材料的有效磁化率 到所述超导材料。 该方法特别适用于接收器线圈。 降低超导接收线圈的有效磁化率使得能够实现它们固有地提供的改进的灵敏度，而不会由于由探针的样品区域附近的材料的敏感性不连续性引起的线展宽而导致的分辨率损失。
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公开(公告)号：US4652926A
公开(公告)日：1987-03-24
申请号：US602938
申请日：1984-04-23
IPC分类号： H01L27/148 , H04N3/36 , H04N5/372 , H04N3/14
摘要： An optical imaging system for use as a solid-state camera, for example, which includes a plurality of solid-state elements for providing long-term storage of images, such elements being, for example, MNOS chips having a plurality of storage cells, which chips when exposed to an image focussed thereon can store a representation thereof. The chips are at a later time optically addressed, as by a scanning-light beam, to read out the stored image so as to provide an electrical output representing the stored image, such output being usable to provide a visual representation of the image such as on a display screen or in hard copy form.
摘要翻译： 例如，用作固态摄像机的光学成像系统，其包括用于提供图像的长期存储的多个固态元件，诸如具有多个存储单元的MNOS芯片， 当暴露于聚焦在其上的图像时，哪个芯片可以存储其表示。 芯片随后通过扫描光束被光学寻址，以读出所存储的图像，以便提供表示所存储的图像的电输出，该输出可用于提供图像的视觉表示，例如 在显示屏幕上或硬拷贝的形式。
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公开(公告)号：US20080150536A1
公开(公告)日：2008-06-26
申请号：US11643152
申请日：2006-12-20
申请人： Richard S. Withers
发明人： Richard S. Withers
IPC分类号： G01R33/36
CPC分类号： G01R33/422 , G01R33/34007 , G01R33/34023 , G01R33/34069 , G01R33/34092
摘要： RF electric fields produced by electric potential differences in the NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and increased noise in NMR spectroscopy. Electrically conducting strips in close proximity to the windings of the NMR probe coil and oriented at right angles to direction of the coil winding they cross provide an alternative path for these electric fields while causing negligible effect upon the RF magnetic field, thereby increasing the sensitivity of the NMR probe.
摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声增加。 靠近NMR探针线圈的绕组并且与它们交叉的线圈绕组的方向成直角定向的导电条提供了用于这些电场的替代路径，同时对RF磁场造成可忽略的影响，从而增加了 NMR探针。
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8.发明授权公开(公告)号：US06556013B2
公开(公告)日：2003-04-29
申请号：US09803199
申请日：2001-03-09
申请人： Richard S. Withers
发明人： Richard S. Withers
IPC分类号： G01V300
CPC分类号： G01R33/341 , G01R33/34007 , G01R33/34023 , G01R33/34061 , G01R33/34092
摘要： Improved superconducting coils for a nuclear magnetic resonance probe use capacitive elements that are located in regions further from an active sample volume than magnetic field generating elements to which they are electrically connected. The sample volume is a substantially oblong shape, and the magnetic field generating elements run substantially parallel to the major axis of the shape, while the capacitor elements run perpendicular to the major axis. The magnetic field generating elements and the capacitor elements may vary in length relative to their distance from a center of the oblong shape. The total number of capacitors formed by the loops may vary from one embodiment to another, typically depending on the necessary resonant frequency. A coil may use sub-coils, each of which incorporates a plurality of the magnetic field generating elements and interdigital capacitor elements, the capacitor elements preferably being located to both sides of the oblong shape.
摘要翻译： 用于核磁共振探针的改进的超导线圈使用位于比活动样品体积更远的区域的电容元件，而不是与它们电连接的磁场产生元件。 样品体积是基本上长方形的，并且磁场产生元件基本上平行于形状的长轴延伸，同时电容器元件垂直于长轴延伸。 磁场产生元件和电容器元件的长度可相对于距离长方形中心的距离而变化。 由环路形成的电容器的总数可以从一个实施例变化到另一个实施例，通常取决于所需的谐振频率。 线圈可以使用子线圈，每个子线圈包括多个磁场产生元件和叉指电容器元件，电容器元件优选地位于长方形的两侧。
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9.发明授权公开(公告)号：US07446534B2
公开(公告)日：2008-11-04
申请号：US11643152
申请日：2006-12-20
申请人： Richard S. Withers
发明人： Richard S. Withers
IPC分类号： G01V3/00
CPC分类号： G01R33/422 , G01R33/34007 , G01R33/34023 , G01R33/34069 , G01R33/34092
摘要： RF electric fields produced by electric potential differences in the NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and increased noise in NMR spectroscopy. Electrically conducting strips in close proximity to the windings of the NMR probe coil and oriented at right angles to direction of the coil winding they cross provide an alternative path for these electric fields while causing negligible effect upon the RF magnetic field, thereby increasing the sensitivity of the NMR probe.
摘要翻译： 通过NMR探针线圈绕组中的电位差产生的RF电场可能渗透NMR样品和样品管，导致NMR光谱中的灵敏度损失和噪声增加。 靠近NMR探针线圈的绕组并且与它们交叉的线圈绕组的方向成直角定向的导电条提供了用于这些电场的替代路径，同时对RF磁场造成可忽略的影响，由此增加了 NMR探针。
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公开(公告)号：US06958244B2
公开(公告)日：2005-10-25
申请号：US10122153
申请日：2002-04-12
申请人： Volker Dötsch , Richard S. Withers
发明人： Volker Dötsch , Richard S. Withers
IPC分类号： G01R33/46 , G01R33/465 , G01N24/00
CPC分类号： G01R33/46 , G01R33/465 , Y10T436/10 , Y10T436/108331 , Y10T436/24
摘要： An NMR buffer is particularly useful for biomolecules that require a certain amount of salt in the buffer solution. A primary buffer component and a titrating component are selected based on low ion mobility. These selections allow for a lower conductivity buffer without reducing the salt content. As such, a higher sensitivity experiment results.
摘要翻译： NMR缓冲液特别适用于在缓冲溶液中需要一定量盐的生物分子。 基于低离子迁移率选择初级缓冲剂组分和滴定组分。 这些选择允许较低的电导率缓冲液，而不会降低盐含量。 因此，更高的灵敏度实验结果。
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