-
公开(公告)号：US09598282B2
公开(公告)日：2017-03-21
申请号：US13243257
申请日：2011-09-23
申请人： Li Han , Anthony L. Andrady , David S. Ensor
发明人： Li Han , Anthony L. Andrady , David S. Ensor
CPC分类号： B82Y15/00 , G01N27/127 , Y10S977/957
摘要： A chemical sensor and a system and method for sensing a chemical species. The chemical sensor includes a plurality of nanofibers whose electrical impedance varies upon exposure to the chemical species, a substrate supporting and electrically isolating the fibers, and a set of electrodes connected to the plurality of fibers at spatially separated points to permit the electrical impedance of the plurality of fibers to be measured. The system includes the chemical sensor, an impedance measuring device coupled to the electrodes and configured to determine an electrical impedance of the plurality of fibers, and an analyzer configured to identify the chemical species based on a change in the electrical impedance. The method measures at least one change in an electrical impedance between spatially separated electrodes, and identifies the chemical species based on the measured change in the electrical impedance.
-
2.发明授权Luminescent device including nanofibers and light stimulable particles disposed on a surface of or at least partially within the nanofibers 有权发光装置包括纳米纤维和光刺激颗粒，其设置在纳米纤维的表面上或至少部分地在纳米纤维内公开(公告)号：US07999455B2
公开(公告)日：2011-08-16
申请号：US11559260
申请日：2006-11-13
IPC分类号： H01J1/62
CPC分类号： G02B6/0008 , C09K11/565 , C09K11/883 , D01D5/0007 , D01F11/00 , D04H1/413 , D04H1/42 , D04H1/4382 , D06M11/52 , H01L33/501 , H01L2924/0002 , H01L2924/00
摘要： A device for stimulable light emission that includes a fiber mat of nanofibers having an average fiber diameter in a range between 100 and 2000 nm, and includes plural stimulable particles disposed in association with the nanofibers. The stimulable particles produce secondary light emission upon receiving primary light at a wavelength λ. The average fiber diameter is comparable in size to the wavelength λ in order to provide scattering sites within the fiber mat for the primary light. Various methods for making suitable luminescent nanofiber mats include: electrospinning a polymer solution including or not including the stimulable particles and forming from the electrospun solution nanofibers having an average fiber diameter between 100 and 2000 nm. Methods, which electrospin without the stimulable particles, introduce the stimulable particles during electrospinning or after electrospinning to the fibers and therefore to the resultant fiber mat.
摘要翻译： 一种可刺激发光的装置，其包括平均纤维直径在100和2000nm之间的纳米纤维的纤维垫，并且包括与纳米纤维相关联地设置的多个可刺激的颗粒。 可接受的颗粒在接收波长为λ的原始光时产生二次发光。 平均纤维直径在尺寸上与波长λ相当，以便为初级光提供纤维垫内的散射部位。 用于制备合适的发光纳米纤维毡的各种方法包括：将包含或不包含可刺激颗粒的聚合物溶液静电纺丝并由平均纤维直径在100和2000nm之间的电纺丝溶液纳米纤维形成。 没有刺激性颗粒的静电纺丝的方法是在静电纺丝过程中或静电纺丝后引入可刺激的颗粒到纤维上，从而导致所得的纤维垫。
-
公开(公告)号：US08052932B2
公开(公告)日：2011-11-08
申请号：US11615285
申请日：2006-12-22
申请人： Li Han , Anthony L. Andrady , David S. Ensor
发明人： Li Han , Anthony L. Andrady , David S. Ensor
CPC分类号： B82Y15/00 , G01N27/127 , Y10S977/957
摘要： A chemical sensor and a system and method for sensing a chemical species. The chemical sensor includes a plurality of nanofibers whose electrical impedance varies upon exposure to the chemical species, a substrate supporting and electrically isolating the fibers, and a set of electrodes connected to the plurality of fibers at spatially separated points to permit the electrical impedance of the plurality of fibers to be measured. The system includes the chemical sensor, an impedance measuring device coupled to the electrodes and configured to determine an electrical impedance of the plurality of fibers, and an analyzer configured to identify the chemical species based on a change in the electrical impedance. The method measures at least one change in an electrical impedance between spatially separated electrodes connected to a plurality of fibers upon exposure of the fibers to the chemical species, and identifies the chemical species based on the measured change in the electrical impedance.
摘要翻译： 化学传感器和用于感测化学物质的系统和方法。 化学传感器包括多个纳米纤维，其电阻抗暴露于化学物质时变化，支撑和电绝缘纤维的基底以及在空间上分离的点连接到多个纤维的一组电极，以允许电阻抗 多个要测量的纤维。 该系统包括化学传感器，耦合到电极并被配置为确定多个光纤的电阻抗的阻抗测量装置，以及配置成基于电阻抗的变化来识别化学物种的分析器。 该方法测量当纤维暴露于化学物质时连接到多个纤维的空间分离的电极之间的电阻抗的至少一个变化，并且基于所测量的电阻抗的变化来识别化学物质。
-
公开(公告)号：US20080150556A1
公开(公告)日：2008-06-26
申请号：US11615285
申请日：2006-12-22
申请人： Li Han , Anthony L. Andrady , David S. Ensor
发明人： Li Han , Anthony L. Andrady , David S. Ensor
IPC分类号： G01R27/08
CPC分类号： B82Y15/00 , G01N27/127 , Y10S977/957
摘要： A chemical sensor and a system and method for sensing a chemical species. The chemical sensor includes a plurality of nanofibers whose electrical impedance varies upon exposure to the chemical species, a substrate supporting and electrically isolating the fibers, and a set of electrodes connected to the plurality of fibers at spatially separated points to permit the electrical impedance of the plurality of fibers to be measured. The system includes the chemical sensor, an impedance measuring device coupled to the electrodes and configured to determine an electrical impedance of the plurality of fibers, and an analyzer configured to identify the chemical species based on a change in the electrical impedance. The method measures at least one change in an electrical impedance between spatially separated electrodes connected to a plurality of fibers upon exposure of the fibers to the chemical species, and identifies the chemical species based on the measured change in the electrical impedance.
摘要翻译： 化学传感器和用于感测化学物质的系统和方法。 化学传感器包括多个纳米纤维，其电阻抗暴露于化学物质时变化，支撑和电绝缘纤维的基底以及在空间上分离的点连接到多个纤维的一组电极，以允许电阻 多个要测量的纤维。 该系统包括化学传感器，耦合到电极并被配置为确定多个光纤的电阻抗的阻抗测量装置，以及配置成基于电阻抗的变化来识别化学物种的分析器。 该方法测量当纤维暴露于化学物质时连接到多个纤维的空间分离的电极之间的电阻抗的至少一个变化，并且基于所测量的电阻抗的变化来识别化学物质。
-
公开(公告)号：US20120049864A1
公开(公告)日：2012-03-01
申请号：US13243257
申请日：2011-09-23
申请人： Li HAN , Anthony L. Andrady , David S. Ensor
发明人： Li HAN , Anthony L. Andrady , David S. Ensor
IPC分类号： G01R27/28
CPC分类号： B82Y15/00 , G01N27/127 , Y10S977/957
摘要： A chemical sensor and a system and method for sensing a chemical species. The chemical sensor includes a plurality of nanofibers whose electrical impedance varies upon exposure to the chemical species, a substrate supporting and electrically isolating the fibers, and a set of electrodes connected to the plurality of fibers at spatially separated points to permit the electrical impedance of the plurality of fibers to be measured. The system includes the chemical sensor, an impedance measuring device coupled to the electrodes and configured to determine an electrical impedance of the plurality of fibers, and an analyzer configured to identify the chemical species based on a change in the electrical impedance. The method measures at least one change in an electrical impedance between spatially separated electrodes, and identifies the chemical species based on the measured change in the electrical impedance.
摘要翻译： 化学传感器和用于感测化学物质的系统和方法。 化学传感器包括多个纳米纤维，其电阻抗暴露于化学物质时变化，支撑和电绝缘纤维的基底以及在空间上分离的点连接到多个纤维的一组电极，以允许电阻抗 多个要测量的纤维。 该系统包括化学传感器，耦合到电极并被配置为确定多个光纤的电阻抗的阻抗测量装置，以及配置成基于电阻抗的变化来识别化学物种的分析器。 该方法测量空间分离的电极之间的电阻抗的至少一个变化，并且基于测得的电阻抗的变化来识别化学物质。
-
公开(公告)号：US20080110342A1
公开(公告)日：2008-05-15
申请号：US11559282
申请日：2006-11-13
CPC分类号： D01D5/0092 , B01D39/1623 , B01D2239/025 , D01D5/0076 , Y10S55/05 , Y10T442/622
摘要： A filtration device including a filtration medium having a plurality of nanofibers of diameters less than 1 micron formed into a fiber mat in the presence of an abruptly varying electric field. The filtration device includes a support attached to the filtration medium and having openings for fluid flow therethrough. A device for making a filter material. The device includes an electrospinning element configured to electrospin a plurality of fibers from a tip of the electrospinning element, a collector opposed to the electrospinning element configured to collect electrospun fibers on a surface of the collector, and an electric field modulation device configured to abruptly vary an electric field at the collector at least once during electrospinning of the fibers. A method for making a filter material. The method provides a support having openings for fluid flow therethrough, electrospins nanofibers across an entirety of the openings, and abruptly varies an electric field at the collector at least once during electrospinning of the fibers.
摘要翻译： 一种过滤装置，其包括具有多个直径小于1微米的纳米纤维的过滤介质，所述纳米纤维在突变电场的存在下形成纤维垫。 过滤装置包括附接到过滤介质并具有用于流体流过其中的开口的支撑件。 用于制造过滤材料的装置。 该装置包括静电纺丝元件，其被配置为从静电纺丝元件的尖端静电纺丝多个纤维;与静电纺丝元件相对的收集器，该静电纺丝元件构造成在收集器的表面上收集电纺纤维;以及电场调制装置，其被配置为突然变化 在电纺丝期间，集电器处的电场至少一次。 一种制造过滤材料的方法。 该方法提供具有用于流体流过其中的开口的支撑件，跨过整个开口电纺丝纳米纤维，并且在电纺丝期间至少一次地在收集器处改变电场。
-
公开(公告)号：US07592277B2
公开(公告)日：2009-09-22
申请号：US11130269
申请日：2005-05-17
CPC分类号： D01D5/0061 , D04H1/4291 , Y10T428/29 , Y10T428/2913 , Y10T428/2915 , Y10T428/298 , Y10T442/60 , Y10T442/614 , Y10T442/615 , Y10T442/625 , Y10T442/626 , Y10T442/659 , Y10T442/66 , Y10T442/681 , Y10T442/69 , Y10T442/692 , Y10T442/696 , Y10T442/697 , Y10T442/699
摘要： An apparatus and method in which the apparatus includes a first electrospinning device configured to electrospin first fibers of a first substance, a second electrospinning device configured to electrospin second fibers of a second substance such that first and second fibers combine in a mat formation region, and a biasing device configured to bias the first electrospinning device with a first electric polarity and to bias the second electrospinning device with a second electric polarity of opposite polarity to the first electric polarity to promote attraction and coalescence between the first and second fibers. The method electrospins under the first electric polarity first fibers from the first substance, electrospins under the second electric polarity fibers from the second substance, and coalesces the first and second fibers to form the fiber mat.
摘要翻译： 一种装置和方法，其中所述装置包括构造成电旋转第一物质的第一纤维的第一静电纺丝装置，构造成静电纺第二物质的第二纤维以使第一和第二纤维在垫形成区域中结合的第二静电纺丝装置，以及 偏置装置，被配置为以第一电极性偏置第一静电纺丝装置，并且以与第一电极性相反的极性的第二电极极偏置第二静电纺丝装置，以促进第一和第二纤维之间的吸引和聚结。 该方法在来自第一物质的第一电极性第一纤维下电纺丝，在来自第二物质的第二电极性纤维下电纺丝，并且聚结第一和第二纤维以形成纤维垫。
-
公开(公告)号：US20080184886A1
公开(公告)日：2008-08-07
申请号：US11670774
申请日：2007-02-02
IPC分类号： B01D53/02
CPC分类号： B01D53/02 , B01D2253/102 , B01D2253/202 , B01D2253/304 , B01D2259/40088 , B01J20/20 , B01J20/28004 , B01J20/28007 , B01J20/28023 , B01J20/28028 , B01J20/28033 , B01J20/28038 , B01J20/3441 , B01J20/3483 , B82Y30/00 , G01N1/4022 , G01N30/12 , G01N2030/121
摘要： A thermal preconcentrator unit and a method for concentrating chemical species. The thermal preconcentrator unit includes a thermoelectric device having a temperature controlled surface and a sorbent material configured to concentrate the chemical species. The sorbent material is disposed on and in thermal contact with the temperature controlled surface. The thermoelectric device is configured to cool and heat the temperature controlled surface to promote sorption and desorption of chemical species onto and from the sorbent material. The method provides a temperature controlled surface and exposes the chemical species to a sorbent material disposed on the temperature controlled surface to concentrate the chemical species thereon.
摘要翻译： 热预浓缩器单元和浓缩化学物质的方法。 热预浓缩器单元包括具有温度控制表面的热电装置和配置成浓缩化学物质的吸附剂材料。 吸附剂材料设置在温度受控表面上并与温度受控表面热接触。 该热电装置构造成冷却和加热温度受控表面，以促进化学物质吸附和解吸附到吸附材料上和从吸附剂材料上脱附。 该方法提供温度控制的表面，并将化学物质暴露于设置在温度受控表面上的吸附剂材料，以将化学物质集中在其上。
-
公开(公告)号：US08652229B2
公开(公告)日：2014-02-18
申请号：US12575892
申请日：2009-10-08
IPC分类号： B01D46/00
CPC分类号： D01D5/0092 , B01D39/1623 , B01D2239/025 , D01D5/0076 , Y10S55/05 , Y10T442/622
摘要： A filtration device including a filtration medium having a plurality of nanofibers of diameters less than 1 micron formed into a fiber mat in the presence of an abruptly varying electric field. The filtration device includes a support attached to the filtration medium and having openings for fluid flow therethrough. A device for making a filter material. The device includes an electrospinning element configured to electrospin a plurality of fibers from a tip of the electrospinning element, a collector opposed to the electrospinning element configured to collect electrospun fibers on a surface of the collector, and an electric field modulation device configured to abruptly vary an electric field at the collector at least once during electrospinning of the fibers. A method for making a filter material. The method provides a support having openings for fluid flow therethrough, electrospins nanofibers across an entirety of the openings, and abruptly varies an electric field at the collector at least once during electrospinning of the fibers.
摘要翻译： 一种过滤装置，其包括具有多个直径小于1微米的纳米纤维的过滤介质，所述纳米纤维在突变电场的存在下形成纤维垫。 过滤装置包括附接到过滤介质并具有用于流体流过其中的开口的支撑件。 用于制造过滤材料的装置。 该装置包括静电纺丝元件，其被配置为从静电纺丝元件的尖端静电纺丝多个纤维;与静电纺丝元件相对的收集器，该静电纺丝元件构造成在收集器的表面上收集电纺纤维;以及电场调制装置，其被配置为突然变化 在电纺丝期间，集电器处的电场至少一次。 一种制造过滤材料的方法。 该方法提供具有用于流体流过其中的开口的支撑件，跨过整个开口电纺丝纳米纤维，并且在电纺丝期间至少一次地在收集器处改变电场。
-
公开(公告)号：US08632721B2
公开(公告)日：2014-01-21
申请号：US13243400
申请日：2011-09-23
CPC分类号： D01D5/0061 , D01F11/00 , H05B6/62 , Y10T428/249924 , Y10T428/2913
摘要： Apparatus and method for producing fibrous materials in which the apparatus includes an extrusion element configured to electrospin a substance from which the fibers are to be composed by an electric field extraction of the substance from a tip of the extrusion element, a collector disposed from the extrusion element and configured to collect the fibers, a chamber enclosing the collector and the extrusion element, and a control mechanism configured to control a gaseous environment in which the fibers are to be electrospun. The apparatus and method provide a way to produce a fiber collection having a plurality of nanofibers disposed in relation to each other. The nanofibers in the fiber collection are preferentially oriented along a longitudinal axis of the fiber collection.
摘要翻译： 用于生产纤维材料的装置和方法，其中所述装置包括挤出元件，所述挤出元件构造成通过从所述挤出元件的尖端电离所述物质的电场提取来电纺所述纤维所构成的物质， 并且构造成收集纤维，包围收集器和挤出元件的室以及被配置为控制其中纤维将被电纺的气体环境的控制机构。 该装置和方法提供了一种生产具有相对于彼此设置的多个纳米纤维的纤维集合的方法。 纤维集合中的纳米纤维优先沿着纤维集合的纵向轴线定向。
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.025 秒)
