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公开(公告)号:US20110229998A1
公开(公告)日:2011-09-22
申请号:US11819413
申请日:2007-06-27
申请人: Jonathan S. Steckel , John P. Zimmer , Seth Coe-Sullivan , Nathan E. Stott , Vladimir Bulovic , Moungi G. Bawendi
发明人: Jonathan S. Steckel , John P. Zimmer , Seth Coe-Sullivan , Nathan E. Stott , Vladimir Bulovic , Moungi G. Bawendi
IPC分类号: H01L33/06
CPC分类号: C01G9/08 , B82Y20/00 , B82Y30/00 , C01G11/02 , C01P2004/04 , C01P2004/64 , C01P2004/84 , C01P2006/40 , C09K11/02 , C09K11/565 , H01L33/18 , H01L33/20 , H05B33/14
摘要: A semiconductor nanocrystal includes a core including a first semiconductor material and an overcoating including a second semiconductor material. A monodisperse population of the nanocrystals emits blue light over a narrow range of wavelengths with a high quantum efficiency.
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公开(公告)号:US07943552B2
公开(公告)日:2011-05-17
申请号:US10632922
申请日:2003-08-04
申请人: Moungi G. Bawendi , Klavs F. Jensen
发明人: Moungi G. Bawendi , Klavs F. Jensen
CPC分类号: G06K19/06046 , B82Y15/00 , G01N33/532 , G01N33/533 , G01N33/588 , Y10S420/903
摘要: A novel encoding system, compositions for use therein and methods for determining the source, location and/or identity of a particular item or component of interest is provided. In particular, the present invention utilizes a collection of one or more sizes of populations of semiconductor nanocrystals having characteristic spectral emissions, to “track” the source or location of an item of interest or to identify a particular item of interest. The semiconductor nanocrystals used in the inventive compositions can be selected to emit a desired wavelength to produce a characteristic spectral emission in narrow spectral widths, and with a symmetric, nearly Gaussian line shape, by changing the composition and size of the semiconductor nanocrystal. Additionally, the intensity of the emission at a particular characteristic wavelength can also be varied, thus enabling the use of binary or higher order encoding schemes.
摘要翻译: 提供了一种新颖的编码系统,用于其中的组合物和用于确定感兴趣的特定物品或组分的来源,位置和/或身份的方法。 特别地,本发明利用具有特征光谱发射的一个或多个尺寸的半导体纳米晶体群体的集合来“跟踪”感兴趣的物体的源或位置或识别感兴趣的特定物品。 本发明组合物中使用的半导体纳米晶体可以通过改变半导体纳米晶体的组成和尺寸来选择发射所需的波长以产生窄光谱宽度和对称的几乎高斯线形的特征光谱发射。 此外,特定特征波长处的发射强度也可以变化,从而能够使用二进制或更高阶编码方案。
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公开(公告)号:US20110037846A1
公开(公告)日:2011-02-17
申请号:US12680150
申请日:2008-09-26
申请人: Hao Huang , Yu Yao , C. Forbes Dewey , Moungi G. Bawendi
发明人: Hao Huang , Yu Yao , C. Forbes Dewey , Moungi G. Bawendi
IPC分类号: H04N7/18
CPC分类号: G01N21/6458 , B82Y15/00 , B82Y30/00 , G01N21/6428 , G01N33/588 , G01N2021/6441 , Y10T428/12028 , Y10T428/294 , Y10T428/2991 , Y10T436/141111
摘要: A method of imaging microscopic objects includes determining the relative depths of two or more semiconductor nanocrystals by analyzing images of the semiconductor nanocrystals at varying z-displacements.
摘要翻译: 成像微观物体的方法包括通过在变化的z位移处分析半导体纳米晶体的图像来确定两个或更多个半导体纳米晶体的相对深度。
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公开(公告)号:US20110025224A1
公开(公告)日:2011-02-03
申请号:US12776126
申请日:2010-05-07
CPC分类号: C09K11/565 , H05B33/14 , H05B33/22
摘要: A voltage driven light emitting device includes an electroluminescent material and semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers. The semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers emit light. The semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers can be doped to provide desired emission characteristics. Devices that share a substrate and emit more than one color may be conveniently made.
摘要翻译: 电压驱动发光器件包括电致发光材料和半导体纳米晶体,发光有机小分子,发射物质分子的混合物或导电聚合物。 半导体纳米晶体,发光有机小分子,发射物质分子的混合物或导电聚合物发光。 可以掺杂半导体纳米晶体,发光有机小分子,发射物质分子的混合物或导电聚合物以提供期望的发射特性。 可以方便地制造共享衬底并发射多种颜色的装置。
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公开(公告)号:US20110017950A1
公开(公告)日:2011-01-27
申请号:US12725438
申请日:2010-03-16
IPC分类号: C09K11/54
CPC分类号: C09K11/883 , B82Y20/00 , B82Y30/00 , C01B17/20 , C01B19/007 , C01P2002/72 , C01P2002/84 , C01P2004/04 , C01P2004/52 , C01P2004/64 , C01P2004/80 , C01P2004/86 , C01P2006/60 , C07F9/224 , C07F9/5304 , C09K11/02 , C09K11/565 , C09K11/885 , C09K11/892 , C30B7/00 , C30B7/14 , C30B29/46 , C30B29/48 , C30B29/60 , C30B29/605 , Y10S977/773 , Y10S977/774 , Y10S977/777 , Y10S977/813 , Y10S977/824 , Y10S977/832 , Y10T428/12035 , Y10T428/12049 , Y10T428/12181 , Y10T428/12986 , Y10T428/2982 , Y10T428/2991 , Y10T428/2993
摘要: A nanocrystal capable of light emission includes a nanoparticle having photoluminescence having quantum yields of greater than 30%.
摘要翻译: 能够发光的纳米晶体包括具有大于30%的量子产率的光致发光的纳米颗粒。
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公开(公告)号:US20100303119A1
公开(公告)日:2010-12-02
申请号:US11794919
申请日:2006-02-08
申请人: Brian T. Mayers , Richard S. Conroy , Dmitri V. Vezenov , Preston Snee , Yinthai Chan , Moungi G. Bawendi , George M. Whitesides
发明人: Brian T. Mayers , Richard S. Conroy , Dmitri V. Vezenov , Preston Snee , Yinthai Chan , Moungi G. Bawendi , George M. Whitesides
摘要: The present invention generally relates to lasers comprising fluidic channels, such as microfluidic channels. In some instances, the channel contains two or more fluids. The fluids may remain non-mixed within the channel, for example, due to immiscibility and/or laminar flow within the channel. The fluids may be arranged in the channel such that light propagating in a first fluid is prevented by the second fluid from exiting the first fluid, for example, due to differences in the indexes of refraction (e.g., causing internal reflection of the fluid to occur). Thus, in one embodiment, a first fluid may be at least partially surrounded by a second fluid having a second index of refraction lower than the index of refraction of the first fluid. In some embodiments, the fluidic channel is used as a laser, for instance, a dye laser, i.e., a laser created by directing light at a dye to produce coherent light. The dye may be present in one or more fluids within the fluidic channel. The incident light (for example, created by another laser) may be directed at the channel from any angle. In some cases, laser light may be produced in a direction substantially aligned with the longitudinal axis of the channel. In some embodiments, the laser is free of mirrors, prisms, or gratings, or the laser may produce coherent light using a non-resonant photonic pathway. However, in other cases, mirrors, prisms, or gratings may be used to reflect light along the channel to enhance stimulated emission of coherent light. Another aspect of the invention includes optical diffractors, such as prisms or gratings, which can contain a fluid. The optical diffractors, in certain embodiments, are positioned to diffract light, such as coherent light, emanating from the fluidic channel. Still other aspects of the invention provide devices, kits, and methods of making and using such lasers.
摘要翻译: 本发明一般涉及包括流体通道的激光器,例如微流体通道。 在一些情况下,通道包含两种或更多种流体。 流体可以在通道内保持不混合,例如,由于通道内的不混溶和/或层流。 流体可以布置在通道中,使得通过第二流体从第一流体中排出的光例如由于折射率的差异(例如,引起流体的内部反射)而被阻止在第一流体中传播的光 )。 因此,在一个实施例中,第一流体可以至少部分地被具有低于第一流体的折射率的第二折射率的第二流体包围。 在一些实施例中,流体通道用作激光器,例如染料激光器,即通过在染料处引导光以产生相干光而产生的激光。 染料可存在于流体通道内的一种或多种流体中。 入射光(例如,由另一激光产生的)可以从任何角度指向通道。 在一些情况下,可以在与通道的纵向轴线基本对准的方向上产生激光。 在一些实施例中,激光器不含镜子,棱镜或光栅,或者激光可以使用非共振光子通道产生相干光。 然而,在其他情况下,可以使用反射镜,棱镜或光栅来沿着通道反射光以增强相干光的受激发射。 本发明的另一方面包括可以包含流体的光学衍射器,例如棱镜或光栅。 在某些实施例中,光衍射器被定位成衍射从流体通道发出的光,例如相干光。 本发明的其它方面提供了制造和使用这种激光器的装置,套件和方法。
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公开(公告)号:US20090299196A1
公开(公告)日:2009-12-03
申请号:US12469395
申请日:2009-05-20
IPC分类号: A61B6/00
CPC分类号: A61B5/0071 , A61B5/0082 , A61B5/0084 , A61B5/4848 , A61B5/742
摘要: A method and system for medical imaging employs an excitation source configured to cause an object having a plurality of cells to at least one of emit, reflect, and fluoresce light. An optical receptor is employed that is configured to receive the light from the object. A filter assembly receives the light from the optical receptor and filters the light. An image processor having a field of view (FOV) substantially greater than a diameter of a cell of the object and an analysis resolution substantially matched to the diameter of a cell of the object that receives the filtered light from the filter and analyzes the filtered light corresponding to each cell in the FOV. A feedback system is provided that is configured to provide an indication of a state of each cell in the FOV and a location of a cell in the FOV meeting a predetermined condition.
摘要翻译: 用于医学成像的方法和系统使用激励源,其被配置为使具有多个单元的对象至少发射,反射和发出荧光。 采用被配置为接收来自物体的光的光学接收器。 过滤器组件接收来自光学接收器的光并过滤光。 具有基本上大于对象的单元的直径的视场(FOV)的图像处理器和与从物体接收滤光器的物体的单元的直径基本匹配的分析分辨率,并分析滤光 对应于FOV中的每个单元格。 提供了一种反馈系统,其被配置为提供FOV中的每个小区的状态的指示以及FOV中的小区的位置满足预定条件。
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公开(公告)号:US20090221088A1
公开(公告)日:2009-09-03
申请号:US11990439
申请日:2006-08-10
IPC分类号: G01N21/76
CPC分类号: G01N21/6486 , G01N33/542 , Y10T436/207497
摘要: Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa.
摘要翻译: 结合分析物会导致传感器荧光发射的变化。 荧光的变化可能与分析物的存在量有关。 传感器可以包括连接到荧光部分的半导体纳米晶体。 激发后,荧光部分可以将能量转移到半导体纳米晶体,反之亦然。
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公开(公告)号:US07566476B2
公开(公告)日:2009-07-28
申请号:US11502493
申请日:2006-08-11
申请人: Moungi G. Bawendi , Klavs F. Jensen , Bashir O. Dabbousi , Javier Rodriquez-Viejo , Frederic Victor Mikulec
发明人: Moungi G. Bawendi , Klavs F. Jensen , Bashir O. Dabbousi , Javier Rodriquez-Viejo , Frederic Victor Mikulec
CPC分类号: C09K11/883 , B82Y20/00 , B82Y30/00 , C01B17/20 , C01B19/007 , C01P2002/72 , C01P2002/84 , C01P2004/04 , C01P2004/52 , C01P2004/64 , C01P2004/80 , C01P2004/86 , C01P2006/60 , C07F9/224 , C07F9/5304 , C09K11/02 , C09K11/565 , C09K11/885 , C09K11/892 , C30B7/00 , C30B7/14 , C30B29/46 , C30B29/48 , C30B29/60 , C30B29/605 , Y10S977/773 , Y10S977/774 , Y10S977/777 , Y10S977/813 , Y10S977/824 , Y10S977/832 , Y10T428/12035 , Y10T428/12049 , Y10T428/12181 , Y10T428/12986 , Y10T428/2982 , Y10T428/2991 , Y10T428/2993
摘要: A nanocrystal capable of light emission includes a nanoparticle having photoluminescence having quantum yields of greater than 30%.
摘要翻译: 能够发光的纳米晶体包括具有大于30%的量子产率的光致发光的纳米颗粒。
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公开(公告)号:US07449237B2
公开(公告)日:2008-11-11
申请号:US11808476
申请日:2007-06-11
申请人: YinThai Chan , John P. Zimmer , Moungi G. Bawendi
发明人: YinThai Chan , John P. Zimmer , Moungi G. Bawendi
IPC分类号: B32B5/16
CPC分类号: B82Y30/00 , B01J13/02 , C09K11/02 , C09K11/025 , C09K11/565 , C09K11/883 , Y10S977/773 , Y10S977/778 , Y10S977/779 , Y10T428/2982 , Y10T428/2991 , Y10T428/2993
摘要: A microparticle can include a central region and a peripheral region. The peripheral region can include a nanoparticle, such as a metal nanoparticle, a metal oxide nanoparticle, or a semiconductor nanocrystal. The microparticle can be a member of a monodisperse population of particles.
摘要翻译: 微粒可以包括中心区域和周边区域。 周边区域可以包括纳米颗粒,例如金属纳米颗粒,金属氧化物纳米颗粒或半导体纳米晶体。 微粒可以是单分散粒子群的成员。
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