公开(公告)号：US20240317976A1

公开(公告)日：2024-09-26

申请号：US18610295

申请日：2024-03-20

Applicant: Versitech Limited ,  Advanced Biomedical Instrumentation Centre Limited

Inventor： Lizhi XU ,  Hengjia ZHU ,  Zuochen WANG

IPC: C08K9/04 ,  C08K3/22 ,  C08K7/02 ,  C08L29/04 ,  H01F1/44 ,  A61B34/00

CPC classification number: C08K9/04 ,  C08K3/22 ,  C08K7/02 ,  C08L29/04 ,  H01F1/445 ,  A61B34/73 ,  C08K2003/2275 ,  C08K2201/003 ,  C08K2201/01 ,  C08K2201/011 ,  C08L2205/16

Abstract: The present invention provides a class of magnetic hydrogels with tissue-mimetic mechanical properties and photothermal welding/healing capability. In these hydrogels, a hybrid network involving aramid nanofibers, functionalized Fe3O4 nanoparticles, and polyvinyl alcohol (PVA) is accomplished by a stepwise assembly of the functional components. The engineered interactions between nanoscale constituents enable facile materials processing and confer a combination of excellent mechanical properties, magnetism, water content and porosity.

公开(公告)号：US20240270916A1

公开(公告)日：2024-08-15

申请号：US18169722

申请日：2023-02-15

Applicant: VERSITECH LIMITED ,  Advanced Biomedical Instrumentation Centre Limited

Inventor： Lizhi XU ,  Hegeng LI ,  Hongzhen Liu ,  Huimin HE ,  Zuochen WANG

IPC: C08J9/00 ,  C08J9/28

CPC classification number: C08J9/0061 ,  C08J9/28 ,  C08J2201/0502 ,  C08J2205/044 ,  C08J2205/10 ,  C08J2329/04 ,  C08J2377/10 ,  C08J2429/04 ,  C08J2477/10 ,  H01L21/768

Abstract: A composite nanofiber aerogel (CNA) is formed from aramid nanofibers (ANFs) combined with polyvinyl alcohol (PVA). These nanoscale constituents of the aerogel form 3D networks with high nodal connectivity and strongly welded connectivity joints between fibrils so that the structure has high stiffness and strength compared to other polymeric aerogels and successive breakage of crosslinks at the connectivity nodes affords energy dissipation while maintaining the overall structural integrity. A specific class of CNA with a specific solid content may be used to form a thin firm with a composite nanofiber framework (CNFF) that is useful in the manufacture of kirigami wearable electronics.

公开(公告)号：US20240408365A1

公开(公告)日：2024-12-12

申请号：US18731433

申请日：2024-06-03

Applicant: The University of Hong Kong ,  Advanced Biomedical Instrumentation Centre Limited

Inventor： Lizhi XU ,  Hongzhen LIU

IPC: A61M37/00 ,  H02N1/04 ,  H02N2/00 ,  H02N2/18

Abstract: A mechanoionic current generator comprising: a working electrode including an activated carbon cloth; and a counter electrode including a raw carbon cloth and a hydrogel; wherein the hydrogel has a plurality of flexible and asymmetrically shaped structures; and the working electrode has a surface immersed in the hydrogel and provided with a plurality of oxygen-containing functional groups. The ionic current generation mechanism of the current generator is naturally compatible with living organisms and living hydrogels, as exemplified by a self-powered drug delivery patch for wound healing. The current generator provides excellent outputs of current and charge transfer which are advantageous for various biomedical applications.