公开(公告)号：US20250140457A1

公开(公告)日：2025-05-01

申请号：US18497570

申请日：2023-10-30

Applicant: XEROX CORPORATION

Inventor： Daniel Bullard ,  Ravi Neelakantan

IPC: H01F1/20 ,  H01F41/00 ,  H02K1/02 ,  H02K15/02

Abstract: A shaped structure having a fixed ferromagnetic polymer material aligned to a unified alignment direction. The shaped structure may include ferromagnetic particles suspended in the fixed ferromagnetic polymer material, and the ferromagnetic particles are aligned to the unified alignment direction. A method of manufacturing a structure includes forming ferromagnetic polymer precursors, dispensing the ferromagnetic precursors into a shaped structure, applying a magnetic field to cause the ferromagnetic precursors to align to a unified crystallographic orientation, and finishing the shaped structure to form a ferromagnetic polymer with a fixed unified crystallographic orientation and produce the structure.

公开(公告)号：US20230083459A1

公开(公告)日：2023-03-16

申请号：US17474417

申请日：2021-09-14

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Ravi Neelakantan ,  Alexander Rousina-Webb

IPC: B29B7/00 ,  B29B7/24

Abstract: A system has a first fluid dispenser containing a biocompatible polymer, a second fluid dispenser containing a biocompatible curing agent selected to form a highly viscous mixture with the biocompatible polymer, a pair of diverging surfaces having a contact point, the first fluid dispenser and the second fluid dispenser positioned to dispense a first fluid and a second fluid at the contact point, and an actuator connected to the first fluid dispenser, the second fluid dispenser and the pair of diverging surfaces, the actuator configured to cause the first fluid dispenser and the second fluid dispenser to dispense the fluids at the contact point, and to cause the diverging surfaces to move through the contact point and then diverge, causing the mixture to form filaments until the filaments break up to form a spray. A method of forming a spray includes dispensing a biocompatible polymer solution and a curing agent onto a pair of diverging surfaces to form a mixture, moving the two diverging surfaces counter to each other to cause the mixture to form filaments between the two diverging surfaces as the diverging surfaces move away from each other, moving the two diverging surfaces further counter to each other to cause the filaments burst into droplets, and directing the droplets onto a surface. A composition of matter comprising a biocompatible polymer and a biocompatible curing agent.