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公开(公告)号：US09881792B2
公开(公告)日：2018-01-30
申请号：US15447734
申请日：2017-03-02
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng
IPC: B82Y30/00 , H01L21/02 , H01L21/268 , B82B3/00
CPC classification number: H01L21/02664 , B81C1/00634 , B82B3/008 , H01L21/0243 , H01L21/02527 , H01L21/02532 , H01L21/02568 , H01L21/02603 , H01L21/02653 , H01L21/268
Abstract: Processes for shaping one- and two-dimensional nanomaterials, and thereby inducing local strains therein preferably to control one or more of their material properties. The processes include providing a substrate comprising a three-dimensional surface feature thereon, locating a nanomaterial on the substrate and over the surface feature, and directing a laser beam toward the nanomaterial such that the nanomaterial experiences laser shock pressure sufficient to deform the nanomaterial to conform at least partially to the shape of the surface feature and adhere to the surface feature either directly or via an intermediate layer therebetween.
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公开(公告)号：US11819946B2
公开(公告)日：2023-11-21
申请号：US18171423
申请日：2023-02-20
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng , Yiliang Liao , Yingling Yang , Chang Ye
IPC: B23K26/356
CPC classification number: B23K26/356
Abstract: Methods and apparatuses for processing materials to enhancing the material's surface strength, improving the material's cyclic and thermal stability of microstructures, and extend the material's fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material's perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.
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公开(公告)号：US20230278140A1
公开(公告)日：2023-09-07
申请号：US18171423
申请日：2023-02-20
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng , Yiliang Liao , Yingling Yang , Chang Ye
IPC: B23K26/356
CPC classification number: B23K26/356
Abstract: Methods and apparatuses for processing materials to enhancing the material’s surface strength, improving the material’s cyclic and thermal stability of microstructures, and extend the material’s fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material’s perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.
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公开(公告)号：US20130180969A1
公开(公告)日：2013-07-18
申请号：US13744941
申请日：2013-01-18
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng , Yiliang Liao , Yingling Yang , Chang Ye
IPC: B23K26/00
CPC classification number: B23K26/356
Abstract: Methods and apparatuses for processing materials to enhancing the material's surface strength, improving the material's cyclic and thermal stability of microstructures, and extend the material's fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material's perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.
Abstract translation: 用于加工材料以提高材料的表面强度，改善材料的微观结构的循环和热稳定性以及延长材料的疲劳性能的方法和装置。 实施例包括在高于室温的适度升高的材料温度（从材料的角度）的激光冲击硬化。 替代实施例包括在非常冷（低温）材料温度下的激光冲击硬化。 另外的实施例包括激光冲击喷丸处理，同时用与激光能量相互作用并增强施加在表面上的压力的活性剂覆盖被处理材料的表面。
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5.发明申请公开(公告)号：US20130092664A1
公开(公告)日：2013-04-18
申请号：US13708180
申请日：2012-12-07
Applicant: PURDUE RESEARCH FOUNDATION
Inventor： Gary J. Cheng , Martin Yi Zhang , Yingling Yang
IPC: B23K26/00
CPC classification number: B23K26/352 , H01L31/0322 , H01L31/03923 , H01L31/03925 , H01L31/1836 , H01L31/1852 , H01L31/1872 , Y02E10/541 , Y02E10/544 , Y02P70/521
Abstract: A system and method for enhancing the conversion efficiency of thin film photovoltaics. The thin film structure includes a photovoltaic absorbent layer covered by a confinement layer. A laser beam passes through the confinement layer and hits the photovoltaic absorbent layer. The laser can be pulsed to create localized rapid heating and cooling of the photovoltaic absorbent layer. The confinement layer confines the laser induced plasma plume creating a localized high-pressure condition for the photovoltaic absorbent layer. The laser beam can be scanned across specific regions of the thin film structure. The laser beam can be pulsed as a series of short pulses. The photovoltaic absorbent layer can be made of various materials including copper indium diselenide, gallium arsenide, and cadmium telluride. The photovoltaic absorbent layer can be sandwiched between a substrate and the confinement layer, and a molybdenum layer can be between the substrate and the photovoltaic absorbent layer.
Abstract translation: 一种提高薄膜光伏转换效率的系统和方法。 薄膜结构包括被限制层覆盖的光伏吸收层。 激光束通过限制层并撞击光伏吸收层。 激光可以被脉冲以产生光伏吸收层的局部快速加热和冷却。 限制层限制激光诱导的等离子体羽流，为光伏吸收层产生局部高压条件。 可以在薄膜结构的特定区域上扫描激光束。 激光束可以作为一系列短脉冲脉冲。 光电吸收层可以由各种材料制成，包括二硒硒化铜，砷化镓和碲化镉。 光电吸收层可以夹在基板和限制层之间，钼层可以在基板和光电吸收层之间。
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Patent Agency Ranking
公开(公告)号：US11590609B2
公开(公告)日：2023-02-28
申请号：US13744941
申请日：2013-01-18
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng , Yiliang Liao , Yingling Yang , Chang Ye
IPC: B23K26/356
Abstract: Methods and apparatuses for processing materials to enhancing the material's surface strength, improving the material's cyclic and thermal stability of microstructures, and extend the material's fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material's perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.
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7.发明授权公开(公告)号：US11384425B2
公开(公告)日：2022-07-12
申请号：US16033669
申请日：2018-07-12
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng , Qiong Nian
Abstract: A method of producing gallium-doped zinc oxide films with enhanced conductivity. The method includes depositing a gallium-doped zinc oxide film on a substrate using a pulsed laser and subjecting the deposited gallium-dope zinc oxide film to a post-treatment effecting recrystallization in the deposited film, wherein the recrystallization enhances the conductivity of the film. Another method of producing gallium-doped zinc oxide films with enhanced conductivity. The method includes the steps of depositing a gallium-doped zinc oxide film on a substrate using a pulsed laser and subjecting the deposited gallium-dope zinc oxide film to an ultraviolet laser beam resulting in recrystallization in the film, wherein the recrystallization enhances the conductivity of the film. A film comprising gallium-doped zinc oxide wherein the film contains a recrystallized grain structure on its surface.
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公开(公告)号：US20170256406A1
公开(公告)日：2017-09-07
申请号：US15447734
申请日：2017-03-02
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng
IPC: H01L21/02 , B82B3/00 , H01L21/268
CPC classification number: H01L21/02664 , B81C1/00634 , B82B3/008 , H01L21/0243 , H01L21/02527 , H01L21/02532 , H01L21/02568 , H01L21/02603 , H01L21/02653 , H01L21/268
Abstract: Processes for shaping one- and two-dimensional nanomaterials, and thereby inducing local strains therein preferably to control one or more of their material properties. The processes include providing a substrate comprising a three-dimensional surface feature thereon, locating a nanomaterial on the substrate and over the surface feature, and directing a laser beam toward the nanomaterial such that the nanomaterial experiences laser shock pressure sufficient to deform the nanomaterial to conform at least partially to the shape of the surface feature and adhere to the surface feature either directly or via an intermediate layer therebetween.
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公开(公告)号：US20170243672A1
公开(公告)日：2017-08-24
申请号：US15054568
申请日：2016-02-26
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng , Qiong Nian , Michael Callahan , John S. Bailey
CPC classification number: H01B5/14 , B29K2101/12 , B32B37/06 , B32B2307/202 , B32B2307/412 , B32B2307/414 , B32B2310/0843 , B32B2457/208 , C09D5/24 , C09D11/52 , G06F3/044 , G06F2203/04103 , H01B1/08 , H01B13/0016 , H01B13/003
Abstract: A composite transparent conducting film (TCF) on a substrate that includes a first region extending to a first depth of the TCF and having a higher density (lower porosity) than a second region of the TCF located at a different depth of the TCF. A method of forming the composite TCF includes applying a transparent conducting layer onto a substrate or onto a second layer previously formed on the substrate, and rapidly heating the transparent conducting layer resulting in a first region extending to a first depth of the transparent conducting layer that is at least partially melted and of a higher density (lower porosity) than a second region located at a different depth of the transparent conducting layer that is not melted, thereby forming a composite TCF that has a change of porosity in a thickness direction of the composite TCF.
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10.发明公开公开(公告)号：US20240326127A1
公开(公告)日：2024-10-03
申请号：US18623151
申请日：2024-04-01
Applicant: Purdue Research Foundation
Inventor： Gary J. Cheng
Abstract: Synthesis of ultrafine nano-alloys and powder precursors for use in the synthesis of ultrafine nano-alloys. A powder precursor is formed of metal salts on particles of a carbonaceous support, and then laser irradiated with a plurality of laser pulses delivered at a high frequency to reduce metal ions of the metal salt in the powder precursor to metal atoms and form the ultrafine nano-alloy.
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