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公开(公告)号：US20180320717A1
公开(公告)日：2018-11-08
申请号：US15325421
申请日：2015-07-16
发明人： Muchen Xu , Chang-Jin Kim
CPC分类号： F15D1/0065 , B63B1/38 , B63B2001/387 , B81B1/006 , B81C99/0085 , F15D1/003 , F15D1/0085
摘要： A microstructured surface with microfeatures formed thereon and defining spaces between the microfeatures includes least one electrode of an electrode pair in the spaces, wherein electrodes of the pair are electrically connected to one another. The at least one electrode located in the space is configured to generate a gas in between the microfeatures when an electrolyte solution penetrates into the microfeatures. Importantly, the electrodes are not connected to any external power source. Because the microstructured surface is self-powered in replenishing the gas lost in a submerged condition, no additional provision to supply energy or regulate the replenishment is necessary for implementation and use.
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公开(公告)号：US20160107951A1
公开(公告)日：2016-04-21
申请号：US14879623
申请日：2015-10-09
发明人： R. Michael Van Dam , Chang-Jin Kim , Supin Chen , Huijiang Ding , Gaurav Jitendra Shah , Pei Yuin Keng
IPC分类号： C07B39/00 , C07B59/00 , C07C227/16 , C07D473/18 , C07C201/12 , C07H1/00
CPC分类号： C07B39/00 , B01J19/0093 , B01J2219/00783 , B01J2219/00853 , B01J2219/00873 , B01L3/502784 , B01L2300/1827 , B01L2400/0427 , B01L2400/0487 , C07B59/001 , C07B59/002 , C07B59/005 , C07B2200/05 , C07C201/12 , C07C227/16 , C07D473/18 , C07H1/00
摘要： Disclosed herein are methods of performing microchemical reactions and electro-wetting-on-dielectric devices (EWOD devices) for use in performing those reactions. These devices and method are particularly suited for preparing radiochemical compounds, particularly compounds containing 18F.
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公开(公告)号：US10927005B2
公开(公告)日：2021-02-23
申请号：US15546260
申请日：2016-01-21
发明人： Muchen Xu , Chang-Jin Kim
摘要： A method of making microstructures having re-entrant or doubly re-entrant topology includes forming a mold defining the negative surface features of the re-entrant or doubly re-entrant topology that is to be formed. In one embodiment, a soft or flowable material is formed on a first substrate and the mold is contacted with the same to form a solid, now positive surface having the re-entrant or doubly re-entrant topology. The mold is then released from the first substrate. The microstructures are secured to a second, different substrate, and the first substrate is removed. Any residual microstructure material located between adjacent microstructures may be removed to form the separate microstructures on the second substrate. The second substrate may be thin and flexible any manipulated into useful or desired shapes having the microstructures on one side thereof.
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公开(公告)号：US10391530B2
公开(公告)日：2019-08-27
申请号：US15023621
申请日：2014-09-26
发明人： Chang-Jin Kim , Tingyi Liu
摘要： An artificial surface is disclosed where super-repellency is obtained solely from surface roughness regardless of the material's intrinsic wettability. The surface is able to repel all known liquids. The surface contains thereon a plurality of microstructures having a doubly re-entrant topology and a liquid-solid contact fraction of less than 50%. In one embodiment, the doubly re-entrant topology includes a cap portion and downwardly extending lip extending from the periphery of the cap portion. The surface withstands high temperatures and resists surface changing phenomenon such as biofouling and chemical scaling.
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公开(公告)号：US20180016136A1
公开(公告)日：2018-01-18
申请号：US15546260
申请日：2016-01-21
发明人： Muchen Xu , Chang-Jin Kim
CPC分类号： B81C1/00373 , B29C33/42 , B29C33/44 , B29C33/64 , B81B2207/056 , B81C1/00111 , B81C1/00357 , B81C1/00555 , B81C99/0085 , B81C2201/0198 , B81C2201/036 , B81C2203/0136 , B81C2203/036 , B81C2203/0757
摘要： A method of making microstructures having re-entrant or doubly re-entrant topology includes forming a mold defining the negative surface features of the re-entrant or doubly re-entrant topology that is to be formed. In one embodiment, a soft or flowable material is formed on a first substrate and the mold is contacted with the same to form a solid, now positive surface having the re-entrant or doubly re-entrant topology. The mold is then released from the first substrate. The microstructures are secured to a second, different substrate, and the first substrate is removed. Any residual microstructure material located between adjacent microstructures may be removed to form the separate microstructures on the second substrate. The second substrate may be thin and flexible any manipulated into useful or desired shapes having the microstructures on one side thereof.
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6.发明申请公开(公告)号：US20140342255A1
公开(公告)日：2014-11-20
申请号：US14370440
申请日：2013-01-09
发明人： Chang-Jin Kim , Prosenjit Sen , Janet I. Hur
CPC分类号： H01M8/0606 , H01M4/8605 , H01M4/8626 , H01M8/04089 , H01M8/04201 , H01M8/04216 , H01M8/1009 , H01M2250/00
摘要： A fuel cell is disclosed with a self-regulated oxygen supply used in conjunction with a self-pumping fuel supply (e.g., a self-pumping anode). The cathode side of the fuel cell includes a gas diffusion electrode interposed between the fuel chamber and the oxidant chamber (e.g., H2O2), the gas diffusion electrode having a catalyst layer formed thereon. An oxygen gas capturing substrate is disposed in the oxidant chamber and is spaced apart from the gas diffusion electrode. The gas capturing substrate has first and second sides containing a plurality of holes extending there between. The first side of the substrate faces the oxidant and the second side faces the gas diffusion electrode. The substrate contains a catalyst on the second side of the substrate or within an inner surface of the holes.
摘要翻译： 公开了具有与自动泵送燃料供应（例如，自泵送阳极）结合使用的自调节氧气供应的燃料电池。 燃料电池的阴极侧包括介于燃料室和氧化剂室（例如H 2 O 2）之间的气体扩散电极，气体扩散电极具有形成在其上的催化剂层。 氧气捕获基板设置在氧化剂室中并与气体扩散电极间隔开。 气体捕获基板具有包含在其间延伸的多个孔的第一和第二侧。 基板的第一面面向氧化剂，第二面朝向气体扩散电极。 衬底在衬底的第二面上或在孔的内表面内含有催化剂。
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公开(公告)号：US11325127B2
公开(公告)日：2022-05-10
申请号：US16071218
申请日：2017-01-19
发明人： Chang-Jin Kim , Jia Li
摘要： A method of fluid manipulation involves applying electric signals at one or more electrodes located on or adjacent to a surface in contact with a liquid that contains a surfactant. The electric field generated by the electric signals (e.g., biasing voltage) applied to the electrodes makes the liquid less wetting on the surface than the natural state and can be used to move or modify the shape of the liquid droplet placed on the surface. One embodiment makes a liquid dewet locally on a surface by applying electric signals locally on the surface so that the liquid can be electrically manipulated on a hydrophilic surface.
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公开(公告)号：US10566617B2
公开(公告)日：2020-02-18
申请号：US15554062
申请日：2016-03-02
发明人： Janet Hur , Leland Smith , Bruce S. Dunn , Chang-Jin Kim
IPC分类号： H01M4/38 , H01M10/04 , H01M10/0565 , H01M4/04 , H01M4/134 , H01M10/058 , H01M4/1395 , H01M4/40 , H01M10/0525 , H01M4/02
摘要： Disclosed is a microbattery having a substrate with a surface that includes an array of posts extending from the surface of the substrate to form a first electrode. An selectively-cured electrolyte forms a conformal coating over the surface of the substrate and the array of posts to provide a coated electrode. A second electrode substantially encases the coated electrode.
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公开(公告)号：US20170146439A1
公开(公告)日：2017-05-25
申请号：US15356062
申请日：2016-11-18
发明人： Chang-Jin Kim , Muchen Xu
IPC分类号： G01N13/02
CPC分类号： G01N13/02 , G01N2013/0216
摘要： A low-profile shear-sensing unit includes a floating plate surrounded by a frame and a displacement sensor that measures in-plane movement of the floating plate. Covered with a surface sample, the floating plate is displaced by the friction drag (i.e., shear) on the surface caused by the flow of fluid and the in-plane displacement is measured by the displacement sensor. The shear force on the sample surface is then obtained by multiplying the measured displacement and the spring constant of the flexure beams, which suspend the floating plate. The floating plate and the flexure beams are formed out of one plate or substrate to achieve monolithic construction with a beam geometry that leads to a high-resolution measurement.
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公开(公告)号：US20160207083A1
公开(公告)日：2016-07-21
申请号：US15023621
申请日：2014-09-26
发明人： Chang-Jin Kim , Tingyi Liu
CPC分类号： B08B17/065 , B05D3/107 , B05D5/00 , B05D5/08
摘要： An artificial surface is disclosed where super-repellency is obtained solely from surface roughness regardless of the material's intrinsic wettability. The surface is able to repel all known liquids. The surface contains thereon a plurality of microstructures having a doubly re-entrant topology and a liquid-solid contact fraction of less than 50%. In one embodiment, the doubly re-entrant topology includes a cap portion and downwardly extending lip extending from the periphery of the cap portion. The surface withstands high temperatures and resists surface changing phenomenon such as biofouling and chemical scaling.
摘要翻译： 公开了一种人造表面，其中无论材料的内在润湿性如何，仅从表面粗糙度获得超疏水性。 表面能够排斥所有已知的液体。 该表面上包含多个微结构，具有双重拓扑结构和小于50％的液 - 固接触分数。 在一个实施例中，双重拓扑结构包括从盖部分的周边延伸的盖部分和向下延伸的唇缘。 表面可承受高温并抵抗表面变化现象，如生物污垢和化学垢。
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