Patents
US 11254156 B2: Magnetic field patterning of nickel nanofibers using precursor ink
- Granted
- 2022-02-22
- Filed
- 2019-04-18 application 16388459
- Type
- Utility · 24 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An approach to printing a nickel precursor ink on a wide range of substrates for electronics and magnetic applications is disclosed. The nickel ink reduces to elemental nickel following heating. The ink was printed using an ultrasonic aerosol printing technique. By sintering the nickel precursor ink in the presence of a homogeneous magnetic field, the reduced nickel complex formed continuously aligned nickel nanofibers axially aligned with the direction of the magnetic field. The fabrication of aligned interlayered nanofiber films provides opportunities to produce structures with enhanced isotropic electrical and magnetic properties. The resistivity of the film was found to be as low as 0.56 mΩ·cm, and the saturation magnetization was measured to be 30 emu/g, which is comparable to bulk Ni. Magnetic anisotropy was induced with an easy axis along the direction of the applied magnetic field with soft magnetic properties.
Source: PVGPATDIS, file of 2026-04-10 (ipg220222.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Rochester Institute of Technology 110 patents | US company or organization | Rochester, NY | Rochester Institute of Technology College or university EXACT high confidence: identical full name and state ROCHESTER INSTITUTE OF TECHNOLOGY Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Chaitanya G. Mahajan | Rochester, NY | 1 | PVGPATDIS, file of 2026-04-10 | |
| Denis Cormier | Pittsford, NY | 11 | PVGPATDIS, file of 2026-04-10 | |
| Mark E. Irving | Rochester, NY | 37 | PVGPATDIS, file of 2026-04-10 | |
| Scott Williams | Livonia, NY | 19 | PVGPATDIS, file of 2026-04-10 | |
| David A. Borkholder | Canandaigua, NY | 24 | PVGPATDIS, file of 2026-04-10 | |
| Ahmed Alfadhel | Rochester, NY | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B41M | Printing, duplicating, marking, or copying processes; colour printing, | B41M1/22 | PVGPATDIS, file of 2026-04-10 |
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F41/16 | PVGPATDIS, file of 2026-04-10 |
| B41J | Typewriters; selective printing mechanisms, i.e. mechanisms printing otherwise than from a forme; correction of typographical errors | B41J2/035 | PVGPATDIS, file of 2026-04-10 |
| C09D | Coating compositions, e.g. paints, varnishes or lacquers; filling pastes; chemical paint or ink removers; inks; correcting fluids; woodstains; pastes or solids for colouring or printing; use of materials therefor | C09D11/02 | PVGPATDIS, file of 2026-04-10 |
| B82Y | Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | B82Y25/00 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-09-23 | Assignment Assignment of assignor's interest | WILLIAMS, SCOTT signed 2019-03-07 BORKHOLDER, DAVID A. signed 2019-04-12 MAHAJAN, CHAITANYA G. signed 2019-04-23 IRVING, MARK signed 2019-04-25 ALFADHEL, AHMED signed 2019-05-01 CORMIER, DENIS R. signed 2020-09-22 | ROCHESTER INSTITUTE OF TECHNOLOGY ROCHESTER, NY | 53854/422 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.