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1. 发明授权

US5366953A Method of forming grain boundary junctions in high temperature superconductor films 失效
标题翻译：在高温超导体膜中形成晶界的方法
公开(公告)号：US5366953A
公开(公告)日：1994-11-22
申请号：US119133
申请日：1993-12-22
申请人： Kookrin Char , Stephen M. Garrison , Nathan Newman , Gregory G. Zaharchuk
发明人： Kookrin Char , Stephen M. Garrison , Nathan Newman , Gregory G. Zaharchuk
IPC分类号： C30B29/22 , H01L20060101 , H01L39/24 , H01L39/22 , B05D5/06 , B05D5/12 , H01B12/00
CPC分类号： H01L39/2496 , Y10S505/702
摘要： A novel method of producing weak-link grain boundary Josephson junctions in high temperature superconducting thin films is disclosed. These junctions are reliably and reproducibly formed on uniform planar substrates (10) by the action of a seed layer (40) placed intermediate the substrate (10) and the superconductor film (20). The superconductor film (22) grown atop the seed (42) is misoriented from the rest of the film (24) by an angle between 5.degree. and 90.degree.. The grain boundary (30) so formed acts as a high quality weak-link junction for superconductor devices. The performance of these junctions can be improved by the addition of buffer layers (50, 60) between the substrate (10) and the superconductor film (20).
摘要翻译：公开了一种在高温超导薄膜中生产弱连接晶界约瑟夫逊结的新方法。通过位于基板（10）和超导薄膜（20）之间的种子层（40）的作用，这些结可靠地和可重复地形成在均匀的平面基板（10）上。在种子（42）顶上生长的超导体膜（22）从膜（24）的其余部分偏向于5°和90°之间的角度。如此形成的晶界（30）作为超导体器件的高质量弱连接结。通过在衬底（10）和超导薄膜（20）之间加入缓冲层（50,60）可以改善这些结的性能。

2. 发明授权

US5157466A Grain boundary junctions in high temperature superconductor films 失效
标题翻译：高温超导体膜中的晶界结
公开(公告)号：US5157466A
公开(公告)日：1992-10-20
申请号：US672664
申请日：1991-03-19
申请人： Kookrin Char , Stephen M. Garrison , Nathan Newman , Gregory G. Zaharchuk
发明人： Kookrin Char , Stephen M. Garrison , Nathan Newman , Gregory G. Zaharchuk
IPC分类号： C30B29/22 , H01L20060101 , H01L39/24
CPC分类号： H01L39/2496 , Y10S505/702
摘要： Grain boundary, weak-link junctions are formed at a predermined location of a uniform, planar substrate by depositing superconducting film on two sections of the substrate. The film is grown as a bicrystal having two distinct areas of superconducting film whose crystal lattices are rotated with respect to each other, either in-plane or out-of-plane, by more than 5.degree. and less than 90.degree.. The grain boundary acts as a weak link junction. The film can be induced to grow as a bicrystal by depositing intermediate strata such as seed layers or buffer layers or by modifying the growth conditions during deposition.
摘要翻译：通过在衬底的两个部分上沉积超导膜，在均匀的平面衬底的预制位置处形成晶界，弱连接结。该膜生长为具有两个不同区域的超导膜的双晶体，其晶格相对于彼此旋转，面内或外面超过5度且小于90度。晶界作为弱连接点。通过沉积中间层如种子层或缓冲层，或者通过在沉积期间改变生长条件，可以将膜诱导成双晶体生长。

3. 发明授权

US07064545B2 Method and apparatus of background suppression in MR imaging using spin locking 有权
标题翻译：使用自旋锁定的MR成像中背景抑制的方法和装置
公开(公告)号：US07064545B2
公开(公告)日：2006-06-20
申请号：US10711169
申请日：2004-08-30
申请人： Gregory G. Zaharchuk , Jean H. Brittain
发明人： Gregory G. Zaharchuk , Jean H. Brittain
IPC分类号： G01V3/00
CPC分类号： G01R33/563
摘要： The present invention is directed to a method and system of tissue or background suppression for the acquisition of image data from blood flow or tissue perfusion. Background suppression with minimal effects upon inflowing spins is achieved through a series of spin locking low level RF pulses that cause adiabatic demagnetization of tissue with a relaxation time T1-rho that is intermediate between T1 and T2 relaxation times. In this regard, the effective transverse magnetization of static tissue resulting from the application of a series of low level RF pulses is reduced and, with the spin locking, longitudinal magnetization regrowth is minimized. As such, inflowing spins to an imaging volume may be directly imaged with significant background tissue suppression. The present invention is particularly applicable to time-of-flight MRA and MR perfusion imaging.
摘要翻译：本发明涉及用于从血流或组织灌注获取图像数据的组织或背景抑制的方法和系统。通过一系列自旋锁定低水平射频脉冲来实现对流入旋转影响最小的背景抑制，其使得在T1和T2弛豫时间之间的弛豫时间T1-rho导致组织绝热退磁。在这方面，由于施加一系列低电平RF脉冲导致的静电组织的有效横向磁化强度降低，并且随着自旋锁定，纵向磁化强度再生长被最小化。这样，流入成像体积的流动可以直接用显着的背景组织抑制成像。本发明特别适用于飞行时间MRA和MR灌注成像。

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