公开(公告)号：US20120282134A1

公开(公告)日：2012-11-08

申请号：US13551253

申请日：2012-07-17

Applicant: Bing LIU ,  Zhendong HU ,  Makoto MURAKAMI ,  Yong CHE

Inventor： Bing LIU ,  Zhendong HU ,  Makoto MURAKAMI ,  Yong CHE

IPC: B22F1/00 ,  B22F9/04 ,  B23K26/00 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: B02C19/18 ,  B01J13/0043 ,  B01J19/121 ,  B22F1/0022 ,  B22F9/04 ,  B22F2999/00 ,  B82Y30/00 ,  B22F2202/11

Abstract: Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.

Abstract translation: 各种实施方案包括用超快速脉冲激光烧蚀制备化学纯的和稳定分散的金属和金属合金纳米颗粒胶体的方法。 一种方法包括以高重复率以超短激光脉冲辐射淹没在液体中的金属或金属合金靶，冷却包括辐射区域的液体的一部分，以及收集通过激光照射和液体冷却产生的纳米颗粒。 该方法可以用高重复率超快脉冲激光源，用于聚焦和移动脉冲激光束的光学系统，浸没在液体中的金属或金属合金靶和液体循环系统来实现，以冷却激光聚焦体积， 收集纳米颗粒产品。 通过控制各种激光参数，并具有可选的液流运动，该方法提供分散金属和金属合金纳米粒子的稳定胶体。 在各种实施方案中，不需要另外的稳定化学试剂。

公开(公告)号：US20120242987A1

公开(公告)日：2012-09-27

申请号：US13426775

申请日：2012-03-22

Applicant: Bing LIU ,  Wei QIAN ,  Makoto MURAKAMI ,  Yong CHE

Inventor： Bing LIU ,  Wei QIAN ,  Makoto MURAKAMI ,  Yong CHE

IPC: G01J3/44 ,  B05D3/06 ,  B05D7/22 ,  B82Y40/00 ,  B82Y30/00

CPC classification number: B05D3/06 ,  B05D7/22 ,  B82Y30/00 ,  B82Y40/00 ,  G01J3/44 ,  G01N21/658 ,  G01N2021/651

Abstract: An apparatus for performing surface-enhanced Raman scattering (SERS) is disclosed wherein an inner surface of a container is coated with SERS active materials such as nanoparticles of noble metals. Such a container can provide a partially enclosed, optical diffuse cavity whose inner surfaces serve for dual purposes of enhancing Raman scattering of the contained analyte and optical integration, therefore improving the efficiency of optical excitation and signal collection. The container may be configured to isolate the SERS active material from the external environment. The container, which may be a cylindrical tube, may be referred to as a SERS tube. Methods of coating the inner wall of a container with pulsed laser ablation and with nanoparticle colloids, respectively, are disclosed.

Abstract translation: 公开了一种用于进行表面增强拉曼散射（SERS）的设备，其中容器的内表面涂覆有SERS活性材料，例如贵金属的纳米颗粒。 这种容器可以提供部分封闭的光学漫射腔，其内表面用于增强所包含的分析物的拉曼散射和光学积分的双重目的，从而提高光学激发和信号采集的效率。 容器可以被配置为将SERS活性材料与外部环境隔离。 可以将圆筒形管的容器称为SERS管。 公开了分别用脉冲激光烧蚀和纳米颗粒胶体涂覆容器内壁的方法。

公开(公告)号：US20120003395A1

公开(公告)日：2012-01-05

申请号：US12974780

申请日：2010-12-21

Applicant: Yong Che ,  Zhendong Hu

Inventor： Yong Che ,  Zhendong Hu

IPC: C23C16/48 ,  B05D5/12

CPC classification number: C23C14/28 ,  C23C14/086 ,  H01M4/0426 ,  H01M6/40 ,  H01M10/0472 ,  H01M10/058

Abstract: A method of fabricating a multi-layered thin film electrochemical device is provided. The method comprises: providing a first target material in a chamber; providing a substrate in the chamber; emitting a first intermittent laser beam directed at the first target material to generate a first plasma, wherein each pulse of the first intermittent laser beam has a pulse duration of about 20 fs to about 500 ps; depositing the first plasma on the substrate to form a first thin film; providing a second target material in the chamber; emitting a second intermittent laser beam directed at the second target material to generate a second plasma, wherein each pulse of the second intermittent laser beam has a pulse duration of about 20 fs to about 500 ps; and depositing the second plasma on or above the first thin film to form a second thin film.

Abstract translation: 提供一种制造多层薄膜电化学装置的方法。 该方法包括：在室中提供第一目标材料; 在所述腔室中提供衬底; 发射指向第一目标材料的第一间歇激光束以产生第一等离子体，其中第一间歇激光束的每个脉冲具有约20fs至约500ps的脉冲持续时间; 将第一等离子体沉积在衬底上以形成第一薄膜; 在腔室中提供第二靶材料; 发射指向所述第二目标材料的第二间歇激光束以产生第二等离子体，其中所述第二间歇激光束的每个脉冲具有约20fs至约500ps的脉冲持续时间; 以及将第二等离子体沉积在第一薄膜上或上方以形成第二薄膜。

公开(公告)号：US20110196044A1

公开(公告)日：2011-08-11

申请号：US12951496

申请日：2010-11-22

Applicant: Zhendong Hu ,  Yong Che

Inventor： Zhendong Hu ,  Yong Che

IPC: A61K31/12 ,  B29C35/08 ,  B82Y40/00

CPC classification number: A61K9/10 ,  A61K9/14 ,  A61K31/12 ,  B01J13/0086 ,  B23K26/0624 ,  B23K26/144 ,  B23K26/146 ,  B82Y40/00 ,  Y10S977/889 ,  Y10S977/901

Abstract: Disclosed is a method of producing a chemically pure and stably dispersed organic nanoparticle colloidal suspension using an ultrafast pulsed laser ablation process. The method comprises irradiating a target of an organic compound material in contact with a poor solvent with ultrashort laser pulses at a high repetition rate and collecting the nanoparticles of the organic compound produced. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beam, an organic compound target in contact with a poor solvent, and a solvent circulating system to cool the laser focal volume and collect the produced nanoparticle products. By controlling various laser parameters, and with optional poor solvent flow movement, the method provides stable colloids of dispersed organic nanoparticles in the poor solvent in the absence of any stabilizing agents.

Abstract translation: 公开了使用超快脉冲激光烧蚀工艺制备化学纯的和稳定分散的有机纳米颗粒胶体悬浮液的方法。 该方法包括用高重复率的超短激光脉冲对与有害化合物接触的有机化合物材料进行照射，并收集生成的有机化合物的纳米颗粒。 该方法可以用高重复率超快脉冲激光源，用于聚焦和移动脉冲激光束的光学系统，与不良溶剂接触的有机化合物靶和溶剂循环系统来实现，以冷却激光焦点体积和 收集生产的纳米颗粒产品。 通过控制各种激光参数，并且具有可选的不良溶剂流动运动，该方法在不存在任何稳定剂的情况下在不良溶剂中提供分散的有机纳米颗粒的稳定胶体。

公开(公告)号：US20110194106A1

公开(公告)日：2011-08-11

申请号：US12951524

申请日：2010-11-22

Applicant: Makoto MURAKAMI ,  Yong Che ,  Bing Liu ,  Yuki Ichikawa

Inventor： Makoto MURAKAMI ,  Yong Che ,  Bing Liu ,  Yuki Ichikawa

IPC: G01J3/44 ,  C23C14/28 ,  C23C14/34 ,  G01N21/65 ,  B82Y99/00 ,  B82Y30/00

CPC classification number: G01N21/658 ,  B82Y30/00 ,  B82Y40/00 ,  C23C14/083 ,  C23C14/3435

Abstract: An device for Raman spectroscopy such as surface enhanced Raman spectroscopy (SERS) is disclosed herein. Various embodiments may be utilized to prepare a SERS substrate using several deposition techniques such as pulsed laser deposition. Some embodiments optimize coverage, volume, or elements of SERS active metals. The method is a single step inexpensive method for preparing a SERS active substrate. In some embodiments a coating layer underneath the SERS active metals is utilized for additional enhancements.

Abstract translation: 本文公开了一种用于拉曼光谱的装置，例如表面增强拉曼光谱（SERS）。 可以使用多种沉积技术例如脉冲激光沉积来制备SERS衬底的各种实施例。 一些实施例优化SERS活性金属的覆盖，体积或元素。 该方法是用于制备SERS活性基底的单步廉价方法。 在一些实施方案中，SERS活性金属下面的涂层用于额外的增强。

公开(公告)号：US20110193025A1

公开(公告)日：2011-08-11

申请号：US12951557

申请日：2010-11-22

Applicant: Yuki ICHIKAWA ,  Zhengong Hu ,  Bing Liu ,  Yong Che

Inventor： Yuki ICHIKAWA ,  Zhengong Hu ,  Bing Liu ,  Yong Che

IPC: C09K11/08 ,  C04B35/00 ,  C04B35/10 ,  C04B35/14 ,  C04B35/553 ,  C04B35/50 ,  C04B35/443

CPC classification number: C09K11/025 ,  C09K11/08 ,  Y10T428/2982

Abstract: A method of forming nanometer sized fine particles of functional ceramic from a bulk functional ceramic, particularly fine particles of phosphorous ceramics from a bulk phosphor material is disclosed. The method relies on irradiation of a bulk phosphorous ceramic in a liquid with an ultrashort-pulsed-laser-fragmentation beam to thereby form nanometer sized particles of the phosphorous ceramic. The method is unique in that the generated particles retain the chemical and crystalline properties of the bulk phosphorous ceramic. The generated solutions are stable colloids from which the particles can be isolated or used as is.

Abstract translation: 公开了一种从体积功能陶瓷形成纳米尺寸的功能性陶瓷微粒的方法，特别是来自块状磷光体材料的磷陶瓷的细颗粒的方法。 该方法依赖于用超短脉冲激光破碎光束在液体中照射大块磷陶瓷，从而形成纳米尺寸的磷陶瓷颗粒。 该方法的独特之处在于所产生的颗粒保留了大块磷陶瓷的化学和结晶性质。 产生的溶液是稳定的胶体，颗粒可从其中分离或原样使用。

公开(公告)号：US07767272B2

公开(公告)日：2010-08-03

申请号：US11754031

申请日：2007-05-25

Applicant: Bing Liu ,  Zhendong Hu ,  Yong Che

Inventor： Bing Liu ,  Zhendong Hu ,  Yong Che

IPC: B05D3/00 ,  C08J7/18 ,  G21H5/00

CPC classification number: C23C14/086 ,  C23C14/28 ,  C30B23/00 ,  C30B29/16 ,  C30B29/60 ,  Y10T428/25

Abstract: A method of producing compound nanorods and thin films under a controlled growth mode is described. The method involves ablating compound targets using an ultrafast pulsed laser and depositing the ablated materials onto a substrate. When producing compound nanorods, external catalysts such as pre-deposited metal nanoparticles are not involved. Instead, at the beginning of deposition, simply by varying the fluence at the focal spot on the target, a self-formed seed layer can be introduced for nanorods growth. This provides a simple method of producing high purity nanorods and controlling the growth mode. Three growth modes are covered by the present invention, including nanorod growth, thin film growth, and nano-porous film growth.

Abstract translation: 描述了在受控生长模式下制备复合纳米棒和薄膜的方法。 该方法包括使用超快速脉冲激光烧蚀化合物靶，并将消融材料沉积在基底上。 当制备复合纳米棒时，不涉及外部催化剂如预沉积的金属纳米颗粒。 相反，在沉积开始时，简单地通过改变目标上焦点处的注量，可以引入自形晶种层用于纳米棒生长。 这提供了生产高纯度纳米棒并控制生长模式的简单方法。 本发明涵盖三种生长方式，包括纳米棒生长，薄膜生长和纳米多孔膜生长。

公开(公告)号：US20080006524A1

公开(公告)日：2008-01-10

申请号：US11712924

申请日：2007-03-02

Applicant: Bing Liu ,  Zhendong Hu ,  Yong Che

Inventor： Bing Liu ,  Zhendong Hu ,  Yong Che

IPC: C23C14/00

CPC classification number: C23C14/28 ,  B22F9/12 ,  B22F2998/00 ,  B22F2999/00 ,  C01G53/04 ,  C01P2004/04 ,  C01P2004/51 ,  B22F1/0018 ,  B22F2202/11

Abstract: The present invention provides a one-step process for producing and depositing size-selected nanoparticles onto a substrate surface using ultrafast pulsed laser ablation of solid target materials. The system includes a pulsed laser with a pulse duration ranging from a few femtoseconds to a few tens of picoseconds, an optical setup for processing the laser beam such that the beam is focused onto the target surface with an appropriate average energy density and an appropriate energy density distribution, and a vacuum chamber in which the target and the substrate are installed and the background gases and their pressures are appropriately adjusted.

Abstract translation: 本发明提供一种用于使用固体靶材料的超快脉冲激光烧蚀来将大小选定的纳米颗粒生产并沉积到衬底表面上的一步法。 该系统包括脉冲激光，其脉冲持续时间范围从几飞秒到几十皮秒，用于处理激光束的光学设置，使得光束以适当的平均能量密度和适当的能量聚焦到目标表面上 密度分布，以及真空室，其中安装了靶和基底，并适当地调节背景气体及其压力。

公开(公告)号：US20050276931A1

公开(公告)日：2005-12-15

申请号：US10863362

申请日：2004-06-09

Applicant: Yong Che ,  Zhendong Hu

Inventor： Yong Che ,  Zhendong Hu

IPC: C23C14/08 ,  C23C14/28 ,  H01M4/04 ,  H01M10/058 ,  H01M10/38 ,  H05H1/24

CPC classification number: C23C14/28 ,  C23C14/086 ,  H01M4/0426 ,  H01M6/40 ,  H01M10/0472 ,  H01M10/058

Abstract: A method of fabricating a multi-layered thin film electrochemical device is provided. The method comprises: providing a first target material in a chamber; providing a substrate in the chamber; emitting a first intermittent laser beam directed at the first target material to generate a first plasma, wherein each pulse of the first intermittent laser beam has a pulse duration of about 20 fs to about 500 ps; depositing the first plasma on the substrate to form a first thin film; providing a second target material in the chamber; emitting a second intermittent laser beam directed at the second target material to generate a second plasma, wherein each pulse of the second intermittent laser beam has a pulse duration of about 20 fs to about 500 ps; and depositing the second plasma on or above the first thin film to form a second thin film.

Abstract translation: 提供一种制造多层薄膜电化学装置的方法。 该方法包括：在室中提供第一目标材料; 在所述腔室中提供衬底; 发射指向第一目标材料的第一间歇激光束以产生第一等离子体，其中第一间歇激光束的每个脉冲具有约20fs至约500ps的脉冲持续时间; 将第一等离子体沉积在衬底上以形成第一薄膜; 在腔室中提供第二靶材料; 发射指向所述第二目标材料的第二间歇激光束以产生第二等离子体，其中所述第二间歇激光束的每个脉冲具有约20fs至约500ps的脉冲持续时间; 以及将第二等离子体沉积在第一薄膜上或上方以形成第二薄膜。