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公开(公告)号：US11225703B2
公开(公告)日：2022-01-18
申请号：US16476047
申请日：2018-01-08
发明人： Robin Ihnfeldt , Sungho Jin , Renkun Chen , Xia Xu , Elizabeth Caldwell , Eunjeong Kim
摘要： This invention relates to magnetocaloric materials comprising ternary alloys useful for magnetic refrigeration applications. The disclosed ternary alloys are Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are no thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. The performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
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公开(公告)号：US20190352747A1
公开(公告)日：2019-11-21
申请号：US16476047
申请日：2018-01-08
发明人： Robin IHNFELDT , Sungho JIN , Renkun CHEN , Xia XU , Elizabeth CALDWELL , Eunjeong KIM
摘要： This invention relates to magnetocaloric materials comprising ternary alloys useful for magnetic refrigeration applications. The disclosed ternary alloys are Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are no thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. The performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
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公开(公告)号：US11728074B2
公开(公告)日：2023-08-15
申请号：US16969858
申请日：2019-02-20
发明人： Robin Ihnfeldt , Eunjeong Kim , Sungho Jin , Renkun Chen , Xia Xu
CPC分类号： H01F1/015 , C22C28/00 , F25B21/00 , H01F1/058 , C22C2202/02 , F25B2321/002
摘要： This invention relates to magnetocaloric materials comprising alloys useful for magnetic refrigeration applications. In some embodiments, the disclosed alloys may be Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are limited thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. Surprisingly, the performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
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公开(公告)号：US20220252308A1
公开(公告)日：2022-08-11
申请号：US17630443
申请日：2020-07-28
发明人： Robin Ihnfeldt , Renkun Chen , Sungho Jin , Tianshi Feng , Sarath Adapa
IPC分类号： F25B21/00
摘要： Systems and methods disclosed herein relate to a cryogenic refrigeration system which may use a compression based cryocooler or liquid nitrogen pre-cool to cool a medium to ˜80K, and may in conjunction with a magnetic refrigeration system operating in the sub-80K temperature regime to provide cooling to a medium to temperatures below 80K. In some embodiments, the disclosed system may be useful for cooling on the order of about 3 kg/day to about 300 kg/day of hydrogen gas to liquid form, with higher efficiency than a standard vapor compression based system. This higher efficiency may make the system a more attractive candidate for use in cryogenic cooling applications.
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公开(公告)号：US20210065941A1
公开(公告)日：2021-03-04
申请号：US16969858
申请日：2019-02-20
发明人： Robin Ihnfeldt , Eunjeong Kim , Sungho Jin , Renkun Chen , Xia Xu
摘要： This invention relates to magnetocaloric materials comprising alloys useful for magnetic refrigeration applications. In some embodiments, the disclosed alloys may be Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are limited thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. Surprisingly, the performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.
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公开(公告)号：US10451321B2
公开(公告)日：2019-10-22
申请号：US15694616
申请日：2017-09-01
发明人： Robin Veronica Ihnfeldt , Xia Xu , Renkun Chen , Sungho Jin , Jianlin Zheng
摘要： This invention relates to a cooling device which utilizes both thermoelectric and magnetocaloric mechanisms for enhanced cooling applications. Using high thermal conductivity magnetocaloric composites in conjunction with thermoelectric elements acting as thermal switches which are electrically coupled to a magnetization and demagnetization cycle enables the use of larger quantities of magnetocaloric material, and high efficiency solid state cooling can be achieved. Solid state cooling devices are useful for a variety of industrial applications which require cooling, such as, but not limited to cooling of microelectronic devices, cooling on space platforms, etc.
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公开(公告)号：US09334422B2
公开(公告)日：2016-05-10
申请号：US14601011
申请日：2015-01-20
发明人： Robin Ihnfeldt
IPC分类号： C09G1/02 , H01L21/306 , H01L21/321 , B24B1/00 , C09K3/14 , C09K13/00 , C09K13/06 , C08K9/10 , C09G1/00 , C09G1/04 , C08K9/00 , C09C1/02 , H01L21/768 , B01J13/14 , C09C1/30 , C23F3/00
CPC分类号： C09G1/02 , B01J13/14 , B24B1/00 , C01P2004/62 , C01P2004/64 , C01P2006/14 , C01P2006/16 , C08K9/00 , C08K9/10 , C09C1/02 , C09C1/3063 , C09G1/00 , C09G1/04 , C09K3/1436 , C09K3/1454 , C09K3/1463 , C09K13/00 , C09K13/06 , C23F3/00 , H01L21/30625 , H01L21/3212 , H01L21/7684
摘要： The invention relates to a contact release capsule comprising a particle, a chemical payload, and a polymer coating, wherein the particle is impregnated with the chemical payload, and the chemical payload is held inside the particle by the polymer coating until the contact release capsule contacts a surface and a shearing force removes the polymer coating allowing the chemical payload to release outside the particle. The contact release capsule is useful in chemical mechanical planarization slurries. Particularly, the contact release capsule may comprise a glycine impregnated silica nanoparticle coated with a polymer, wherein the contact release capsule is dispersed in an aqueous solution and used in the copper chemical mechanical planarization process. Use of the contact release capsule in a slurry for copper chemical mechanical planarization may significantly improve planarization efficiency, decrease unwanted etching and corrosion, and improve dispersion stability.
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8.发明授权公开(公告)号：US08980122B2
公开(公告)日：2015-03-17
申请号：US13542651
申请日：2012-07-05
申请人： Robin Ihnfeldt
发明人： Robin Ihnfeldt
IPC分类号： C09K13/06 , C09C1/02 , H01L21/306 , C09K3/14 , C08K9/00
CPC分类号： C09G1/02 , B01J13/14 , B24B1/00 , C01P2004/62 , C01P2004/64 , C01P2006/14 , C01P2006/16 , C08K9/00 , C08K9/10 , C09C1/02 , C09C1/3063 , C09G1/00 , C09G1/04 , C09K3/1436 , C09K3/1454 , C09K3/1463 , C09K13/00 , C09K13/06 , C23F3/00 , H01L21/30625 , H01L21/3212 , H01L21/7684
摘要： The invention relates to a contact release capsule comprising a particle, a chemical payload, and a polymer coating, wherein the particle is impregnated with the chemical payload, and the chemical payload is held inside the particle by the polymer coating until the contact release capsule contacts a surface and a shearing force removes the polymer coating allowing the chemical payload to release outside the particle. The contact release capsule is useful in chemical mechanical planarization slurries. Particularly, the contact release capsule may comprise a glycine impregnated silica nanoparticle coated with a polymer, wherein the contact release capsule is dispersed in an aqueous solution and used in the copper chemical mechanical planarization process. Use of the contact release capsule in a slurry for copper chemical mechanical planarization may significantly improve planarization efficiency, decrease unwanted etching and corrosion, and improve dispersion stability.
摘要翻译： 本发明涉及包含颗粒，化学有效载荷和聚合物涂层的接触释放胶囊，其中颗粒被化学有效载荷浸渍，并且化学有效载荷通过聚合物涂层保持在颗粒内，直到接触释放胶囊接触 表面和剪切力去除聚合物涂层，允许化学有效载荷释放到颗粒外部。 接触释放胶囊可用于化学机械平面化浆料中。 特别地，接触释放胶囊可以包含用聚合物涂覆的甘氨酸浸渍的二氧化硅纳米颗粒，其中接触释放胶囊分散在水溶液中并用于铜化学机械平面化工艺中。 在用于铜化学机械平面化的浆料中使用接触释放胶囊可以显着地提高平坦化效率，减少不必要的蚀刻和腐蚀，并且提高分散稳定性。
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