公开(公告)号：US12044933B2

公开(公告)日：2024-07-23

申请号：US15750847

申请日：2016-08-08

申请人： Kent State University

发明人： Qi-Huo Wei ,  Yubing Guo ,  Miao Jiang ,  Oleg Lavrentovich ,  Chenhui Peng ,  Kai Sun

IPC分类号： G02F1/1337 ,  B82Y40/00 ,  G02F1/13 ,  G03F1/38

CPC分类号： G02F1/133788 ,  G02F1/1303 ,  G03F1/38 ,  B82Y40/00 ,  G02F1/133753

摘要： A method for aligning molecular orientations of liquid crystals and/or polymeric materials into spatially variant patterns uses metamasks. When non-polarized or circularly polarized light is transmitted through or reflected by the metamasks, spatially varied polarization direction and intensity patterns of light can be generated. By projecting the optical patterns of the metamasks onto substrates coated with photoalignment materials, spatially variant molecular orientations encoded in the polarization and intensity patterns are induced in the photoalignment materials, and transfer into the liquid crystals. Possible designs for the metamask use nanostructures of metallic materials.

公开(公告)号：US11136632B2

公开(公告)日：2021-10-05

申请号：US16100394

申请日：2018-08-10

申请人： Kent State University

发明人： Oleg D. Lavrentovich ,  Chenhui Peng ,  Taras Turiv ,  Yubing Guo ,  Qi-Huo Wei

IPC分类号： C09K19/54 ,  C12R1/125 ,  C12R1/07 ,  C12R1/08 ,  C12R1/12 ,  C12R1/09 ,  C12R1/10 ,  C12R1/11 ,  C12R1/085 ,  C09K19/52 ,  C12N1/20 ,  C09K19/56 ,  C09K19/60 ,  C09K19/04 ,  C09K19/20

摘要： A method for controlling self-propelled particles includes providing the particles to a liquid crystalline medium having predesigned local ordering. The method may control at least one of: a local concentration, trajectory, and net flow of self-propelled particles.

公开(公告)号：US10350597B2

公开(公告)日：2019-07-16

申请号：US15358532

申请日：2016-11-22

申请人： Kent State University

发明人： Oleg D. Lavrentovich ,  Qi-Huo Wei ,  Sergij V. Shiyanovskii ,  Chenhui Peng ,  Yubing Guo

IPC分类号： G01N27/447 ,  G01N27/453 ,  B01L3/00 ,  B01F13/00

摘要： A transport device comprises: a fluid cell comprising parallel substrates; an anisotropic electrolyte disposed in the fluid cell; and electrodes configured to apply an AC electric field to the anisotropic electrolyte disposed in the fluid cell. A substrate of the fluid cell includes a pattern that induces a director distortion pattern in the anisotropic electrolyte disposed in the fluid cell. The director distortion pattern has a gradient configured to induce electrokinetic flow of the anisotropic electrolyte in the fluid cell in response to the AC electric field applied by the electrodes. Cargo, such as particles, gas bubbles, or fluid, is dispersed in the anisotropic electrolyte and transported in the fluid cell by the induced electrokinetic flow of the anisotropic electrolyte. The induced electrokinetic flow may be linear, curvilinear, circular so as to induce mixing, depending on the predesigned director pattern. The director pattern might be nonsingular (defect free) or may contain defects such as disclinations that produce pumping effects and can trap cargo at a core of the disclination.

公开(公告)号：US20190048426A1

公开(公告)日：2019-02-14

申请号：US16100394

申请日：2018-08-10

申请人： Kent State University

发明人： Oleg D. Lavrentovich ,  Chenhui Peng ,  Taras Turiv ,  Yubing Guo ,  Qi-Huo Wei

IPC分类号： C12R1/125 ,  C09K19/54 ,  C12R1/07 ,  C12R1/08 ,  C12R1/085 ,  C12R1/09 ,  C12R1/10 ,  C12R1/11 ,  C12R1/12

摘要： A method for controlling self-propelled particles includes providing the particles to a liquid crystalline medium having predesigned local ordering. The method may control at least one of: a local concentration, trajectory, and net flow of self-propelled particles.

公开(公告)号：US20170144148A1

公开(公告)日：2017-05-25

申请号：US15358532

申请日：2016-11-22

申请人： Kent State University

发明人： Oleg D. Lavrentovich ,  Qi-Huo Wei ,  Sergij V. Shiyanovskii ,  Chenhui Peng ,  Yubing Guo

IPC分类号： B01L3/00

CPC分类号： B01L3/50273 ,  B01F13/0076 ,  B01L3/502784 ,  B01L2300/0645 ,  B01L2300/0867 ,  B01L2300/168 ,  B01L2400/0418 ,  B01L2400/0421 ,  G01N27/44704 ,  G01N27/44747

摘要： A transport device comprises: a fluid cell comprising parallel substrates; an anisotropic electrolyte disposed in the fluid cell; and electrodes configured to apply an AC electric field to the anisotropic electrolyte disposed in the fluid cell. A substrate of the fluid cell includes a pattern that induces a director distortion pattern in the anisotropic electrolyte disposed in the fluid cell. The director distortion pattern has a gradient configured to induce electrokinetic flow of the anisotropic electrolyte in the fluid cell in response to the AC electric field applied by the electrodes. Cargo, such as particles, gas bubbles, or fluid, is dispersed in the anisotropic electrolyte and transported in the fluid cell by the induced electrokinetic flow of the anisotropic electrolyte. The induced electrokinetic flow may be linear, curvilinear, circular so as to induce mixing, depending on the predesigned director pattern. The director pattern might be nonsingular (defect free) or may contain defects such as disclinations that produce pumping effects and can trap cargo at a core of the disclination.