-
公开(公告)号：US20160372300A1
公开(公告)日：2016-12-22
申请号：US15244569
申请日：2016-08-23
申请人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
发明人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
IPC分类号： H01J37/06
CPC分类号： H01J37/06 , H01J2237/047 , H01J2237/0473 , H01J2237/0475 , H01J2237/063
摘要： Methods and apparatus for modulating a particle pulse include a succession of Hermite-Gaussian optical modes that effectively construct a three-dimensional optical trap in the particle pulse's rest frame. Optical incidence angles between the propagation of the particle pulse and the optical pulse are tuned for improved compression. Particles pulses that can be modulated by these methods and apparatus include charged particles and particles with non-zero polarizability in the Rayleigh regime. Exact solutions to Maxwell's equations for first-order Hermite-Gaussian beams demonstrate single-electron pulse compression factors of more than 100 in both longitudinal and transverse dimensions. The methods and apparatus are useful in ultrafast electron imaging for both single- and multi-electron pulse compression, and as a means of circumventing temporal distortions in magnetic lenses when focusing ultra-short electron pulses.
摘要翻译： 用于调制粒子脉冲的方法和装置包括一系列Hermite-Gaussian光学模式，其有效地构成了粒子脉冲的休止帧中的三维光阱。 调整粒子脉冲的传播和光脉冲之间的光入射角以改善压缩。 可以通过这些方法和装置调制的粒子脉冲包括带电粒子和在瑞利状态下具有非零极化率的粒子。 针对一阶Hermite-Gaussian光束的麦克斯韦方程的精确解决方案在纵向和横向尺寸上均显示出超过100的单电子脉冲压缩因子。 该方法和装置在用于单电子和多电子脉冲压缩的超快电子成像中是有用的，并且作为在聚焦超短电子脉冲时避开磁性透镜中的时间失真的手段。
-
公开(公告)号：US20210217952A1
公开(公告)日：2021-07-15
申请号：US17094141
申请日：2020-11-10
申请人： Pablo Jarillo-Herrero , Qiong MA , Nuh GEDIK , Suyang XU , Zhiren ZHENG
发明人： Pablo Jarillo-Herrero , Qiong MA , Nuh GEDIK , Suyang XU , Zhiren ZHENG
摘要： An ultrathin, carbon-based memristor with a moiré superlattice potential shows prominent ferroelectric resistance switching. The memristor includes a bilayer material, such as Bernal-stacked bilayer graphene, encapsulated between two layers of a layered material, such as hexagonal boron nitride. At least one of the encapsulating layers is rotationally aligned with the bilayer to create the moiré superlattice potential. The memristor exhibits ultrafast and robust resistance switching between multiple resistance states at high temperatures. The memristor, which may be volatile or nonvolatile, may be suitable for neuromorphic computing.
-
公开(公告)号：US20180026185A1
公开(公告)日：2018-01-25
申请号：US15656373
申请日：2017-07-21
申请人： Ching-Kit CHAN , Patrick A. LEE , Netanel LINDNER , Gil REFAEL , Qiong MA , Suyang XU , Nuh GEDIK
发明人： Ching-Kit CHAN , Patrick A. LEE , Netanel LINDNER , Gil REFAEL , Qiong MA , Suyang XU , Nuh GEDIK
CPC分类号： H01L49/003 , G01J1/0429 , G01J1/44 , G01J3/0224 , G01J5/10 , G01J2001/4446 , H01L31/0264
摘要： The generation of photocurrent in an ideal two-dimensional Dirac spectrum is symmetry forbidden. In sharp contrast, a three-dimensional Weyl semimetal can generically support significant photocurrent due to the combination of inversion symmetry breaking and finite tilts of the Weyl spectrum. To realize this photocurrent, a noncentrosymmetric Weyl semimetal is coupled to a pair of electrodes and illuminated with circularly polarized light without any voltage applied to the Weyl semimetal. The wavelength of the incident light can range over tens of microns and can be adjusted by doping the Weyl semimetal to change its chemical potential.
-
公开(公告)号：US09842721B2
公开(公告)日：2017-12-12
申请号：US15244569
申请日：2016-08-23
申请人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
发明人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
CPC分类号： H01J37/06 , H01J2237/047 , H01J2237/0473 , H01J2237/0475 , H01J2237/063
摘要： Methods and apparatus for modulating a particle pulse include a succession of Hermite-Gaussian optical modes that effectively construct a three-dimensional optical trap in the particle pulse's rest frame. Optical incidence angles between the propagation of the particle pulse and the optical pulse are tuned for improved compression. Particles pulses that can be modulated by these methods and apparatus include charged particles and particles with non-zero polarizability in the Rayleigh regime. Exact solutions to Maxwell's equations for first-order Hermite-Gaussian beams demonstrate single-electron pulse compression factors of more than 100 in both longitudinal and transverse dimensions. The methods and apparatus are useful in ultrafast electron imaging for both single- and multi-electron pulse compression, and as a means of circumventing temporal distortions in magnetic lenses when focusing ultra-short electron pulses.
-
公开(公告)号：US09536698B2
公开(公告)日：2017-01-03
申请号：US14832056
申请日：2015-08-21
申请人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
发明人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
CPC分类号： H01J37/06 , H01J2237/047 , H01J2237/0473 , H01J2237/0475 , H01J2237/063
摘要： Methods and apparatus for modulating a particle pulse include a succession of Hermite-Gaussian optical modes that effectively construct a three-dimensional optical trap in the particle pulse's rest frame. Optical incidence angles between the propagation of the particle pulse and the optical pulse are tuned for improved compression. Particles pulses that can be modulated by these methods and apparatus include charged particles and particles with non-zero polarizability in the Rayleigh regime. Exact solutions to Maxwell's equations for first-order Hermite-Gaussian beams demonstrate single-electron pulse compression factors of more than 100 in both longitudinal and transverse dimensions. The methods and apparatus are useful in ultrafast electron imaging for both single- and multi-electron pulse compression, and as a means of circumventing temporal distortions in magnetic lenses when focusing ultra-short electron pulses.
摘要翻译： 用于调制粒子脉冲的方法和装置包括一系列Hermite-Gaussian光学模式，其有效地构成了粒子脉冲的休止帧中的三维光阱。 调整粒子脉冲的传播和光脉冲之间的光入射角以改善压缩。 可以通过这些方法和装置调制的粒子脉冲包括带电粒子和在瑞利状态下具有非零极化率的粒子。 针对一阶Hermite-Gaussian光束的麦克斯韦方程的精确解决方案在纵向和横向尺寸上均显示出超过100的单电子脉冲压缩因子。 该方法和装置在用于单电子和多电子脉冲压缩的超快电子成像中是有用的，并且作为在聚焦超短电子脉冲时避开磁性透镜中的时间失真的手段。
-
公开(公告)号：US09455114B2
公开(公告)日：2016-09-27
申请号：US14832056
申请日：2015-08-21
申请人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
发明人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
摘要： Methods and apparatus for modulating a particle pulse include a succession of Hermite-Gaussian optical modes that effectively construct a three-dimensional optical trap in the particle pulse's rest frame. Optical incidence angles between the propagation of the particle pulse and the optical pulse are tuned for improved compression. Particles pulses that can be modulated by these methods and apparatus include charged particles and particles with non-zero polarizability in the Rayleigh regime. Exact solutions to Maxwell's equations for first-order Hermite-Gaussian beams demonstrate single-electron pulse compression factors of more than 100 in both longitudinal and transverse dimensions. The methods and apparatus are useful in ultrafast electron imaging for both single- and multi-electron pulse compression, and as a means of circumventing temporal distortions in magnetic lenses when focusing ultra-short electron pulses.
-
公开(公告)号：US20160056010A1
公开(公告)日：2016-02-25
申请号：US14832056
申请日：2015-08-21
申请人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
发明人： Liang Jie Wong , Byron Freelon , Timm Rohwer , Nuh Gedik , Steven Glenn Johnson
IPC分类号： H01J37/06
CPC分类号： H01J37/06 , H01J2237/047 , H01J2237/0473 , H01J2237/0475 , H01J2237/063
摘要： Methods and apparatus for modulating a particle pulse include a succession of Hermite-Gaussian optical modes that effectively construct a three-dimensional optical trap in the particle pulse's rest frame. Optical incidence angles between the propagation of the particle pulse and the optical pulse are tuned for improved compression. Particles pulses that can be modulated by these methods and apparatus include charged particles and particles with non-zero polarizability in the Rayleigh regime. Exact solutions to Maxwell's equations for first-order Hermite-Gaussian beams demonstrate single-electron pulse compression factors of more than 100 in both longitudinal and transverse dimensions. The methods and apparatus are useful in ultrafast electron imaging for both single- and multi-electron pulse compression, and as a means of circumventing temporal distortions in magnetic lenses when focusing ultra-short electron pulses.
摘要翻译： 用于调制粒子脉冲的方法和装置包括一系列Hermite-Gaussian光学模式，其有效地构成了粒子脉冲的休止帧中的三维光阱。 调整粒子脉冲的传播和光脉冲之间的光入射角以改善压缩。 可以通过这些方法和装置调制的粒子脉冲包括带电粒子和在瑞利状态下具有非零极化率的粒子。 针对一阶Hermite-Gaussian光束的麦克斯韦方程的精确解决方案在纵向和横向尺寸上均显示出超过100的单电子脉冲压缩因子。 该方法和装置在用于单电子和多电子脉冲压缩的超快电子成像中是有用的，并且作为在聚焦超短电子脉冲时避开磁性透镜中的时间失真的手段。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.014 秒)
