公开(公告)号：US20210301135A1

公开(公告)日：2021-09-30

申请号：US17207991

申请日：2021-03-22

Applicant: Virginia Commonwealth University

Inventor： Xuewei Wang ,  Hong Zhao ,  Yuanhang Yang ,  Wuwei Li

IPC: C08L83/04 ,  B33Y70/00 ,  B29C64/112 ,  B33Y10/00 ,  B33Y80/00 ,  C08K5/43 ,  C08G77/08

Abstract: A nitric oxide-releasing 3D printing ink is described for its composition and uses in fabricating a plurality of types of nitric oxide-releasing medical devices. The printing ink composition comprises a mixture of at least one nitric oxide donor and at least one polymer. The nitric oxide-releasing medical device is manufactured by 3D printing technology and provides antimicrobial and/or antithrombus effects by releasing nitric oxide in the presence of moisture.

公开(公告)号：US11141989B2

公开(公告)日：2021-10-12

申请号：US16476676

申请日：2018-02-08

Applicant: Virginia Commonwealth University

Inventor： Daren Chen ,  Hong Zhao

IPC: B41J2/175 ,  B41J2/14

Abstract: An electrohydrodynamic (EHD) jet printing apparatus or system may include circulation of printing fluid to minimize or eliminate clogging in a nozzle. An exemplary nozzle comprises at least two ink channels—one allowing flow to a droplet emitting opening and one allowing flow away from the droplet emitting opening—configured for circulating ink. The nozzle may transfer ink to a substrate with an EHD technique involving voltage or current modulation. For example, an electric field may be applied between the nozzle and printing substrate such that the ink meniscus changes shape and releases ink from the tip of the liquid cone. A multi-channel nozzle may take a variety of configurations, including two co-axially aligned capillaries, side-by-side parallel capillaries, or capillaries arranged at an angle with respect to one another but converging at a single point where the conical meniscus is formed.

公开(公告)号：US20210138794A1

公开(公告)日：2021-05-13

申请号：US16476676

申请日：2018-02-08

Applicant: Virginia Commonwealth University

Inventor： Daren Chen ,  Hong Zhao

IPC: B41J2/175 ,  B41J2/14

Abstract: An electrohydrodynamic (EHD) jet printing apparatus or system may include circulation of printing fluid to minimize or eliminate clogging in a nozzle. An exemplary nozzle comprises at least two ink channels—one allowing flow to a droplet emitting opening and one allowing flow away from the droplet emitting opening—configured for circulating ink. The nozzle may transfer ink to a substrate with an EHD technique involving voltage or current modulation. For example, an electric field may be applied between the nozzle and printing substrate such that the ink meniscus changes shape and releases ink from the tip of the liquid cone. A multi-channel nozzle may take a variety of configurations, including two co-axially aligned capillaries, side-by-side parallel capillaries, or capillaries arranged at an angle with respect to one another but converging at a single point where the conical meniscus is formed.

公开(公告)号：US12179266B2

公开(公告)日：2024-12-31

申请号：US17319554

申请日：2021-05-13

Applicant: VIRGINIA COMMONWEALTH UNIVERSITY

Inventor： Hong Zhao ,  Radhika Barua ,  Ravi L. Hadimani ,  Lilly Balderson

IPC: B33Y70/00 ,  B22F1/105 ,  B22F1/107 ,  B22F5/10 ,  B22F10/22 ,  B22F10/50 ,  B22F10/60 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  H01F1/01 ,  B22F3/10

Abstract: A polymer-assisted 3D printing method and ink compositions are used to manufacture magnetocaloric devices having many applications including in heat pumps, refrigerators, etc. The ink compositions and printing methods can produce compositionally graded, anisotropically aligned magnetocaloric architectures with designed pores and channels, to bring forth significant improvement in heat exchange efficiency.

公开(公告)号：US20220362851A1

公开(公告)日：2022-11-17

申请号：US17319554

申请日：2021-05-13

Applicant: VIRGINIA COMMONWEALTH UNIVERSITY

Inventor： Hong Zhao ,  Radhika Barua ,  Ravi L. Hadimani ,  Lilly Balderson

IPC: B22F10/22 ,  B22F1/00 ,  B22F5/10 ,  B22F10/50 ,  B22F10/60 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00

Abstract: A polymer-assisted 3D printing method and ink compositions are used to manufacture magnetocaloric devices having many applications including in heat pumps, refrigerators, etc. The ink compositions and printing methods can produce compositionally graded, anisotropically aligned magnetocaloric architectures with designed pores and channels, to bring forth significant improvement in heat exchange efficiency.

公开(公告)号：US11814519B2

公开(公告)日：2023-11-14

申请号：US17207991

申请日：2021-03-22

Applicant: Virginia Commonwealth University

Inventor： Xuewei Wang ,  Hong Zhao ,  Yuanhang Yang ,  Wuwei Li

IPC: B33Y70/00 ,  C08L83/04 ,  B29C64/112 ,  B33Y10/00 ,  B33Y80/00 ,  C08G77/08 ,  C08K5/43 ,  C08K3/01 ,  C08K3/34 ,  C08K3/36 ,  C08K3/04

CPC classification number: C08L83/04 ,  B29C64/112 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08G77/08 ,  C08K3/01 ,  C08K5/43 ,  A61L2300/20 ,  C08K3/042 ,  C08K3/346 ,  C08K3/36 ,  C08K2201/011

Abstract: A nitric oxide-releasing 3D printing ink is described for its composition and uses in fabricating a plurality of types of nitric oxide-releasing medical devices. The printing ink composition comprises a mixture of at least one nitric oxide donor and at least one polymer. The nitric oxide-releasing medical device is manufactured by 3D printing technology and provides antimicrobial and/or antithrombus effects by releasing nitric oxide in the presence of moisture.