Articles comprising core shell liquid metal encapsulate networks and method to control alternating current signals and power

Patent metadata

Field	Value
Publication number	US-11691117-B2
Application number	US-202217854559-A
Country	US
Kind code	B2
Filing date	Jun 30, 2022
Priority date	Nov 2, 2018
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

Abstract

The present invention relates to articles comprising core shell liquid metal encapsulate networks and methods of using core shell liquid metal encapsulate networks to control AC signals and power. Such method permits the skilled artisan to control the radiation, transmission, reflection and modulation of an AC signal and power. As a result, AC system properties such as operation frequency, polarization, gain, directionality, insertion loss, return loss, and impedance can be controlled under strain.

First claim

What is claimed is:

1. A method of using a liquid metal encapsulate network, said method comprising:
a) applying a liquid metal encapsulate network to a substrate having surfaces by coating at least a portion of one or more surfaces of said substrate with said liquid metal encapsulate network;
b) encapsulating said substrate with said liquid metal encapsulate network;
c) connecting at least a portion of two or more substrates with said liquid metal encapsulate network; and/or
d) making said liquid metal encapsulate network an internal component of said substrate,
said liquid metal encapsulate network comprising encapsulates comprising a liquid metal core having an external surface, a metal oxide shell that encapsulates said liquid metal core, said shell having an external shell surface; and one or more multi-functional ligands covalently bound to said shell's external surface and/or coordinatively bound to said liquid metal core's external surface said liquid metal core comprising a liquid metal selected from the group consisting of Hg, Pb, Sn, Sb, Cd, Bi, Ga, In, Al, Zn, Ag, Au, Tl and mixtures thereof; said shell comprising a metal oxide comprising a cation derived from a metal selected from the group consisting of Ga, In, Sn, Pb, Sb, Cd, Al, Zn, Tl, Bi, Ca, Sc, Ti, V, Cr, Sr, Y, Zr, Nb, Mo, Te, Gd, Hf, Pr, Nd, Pt, Sm, Eu, Dy, Ho, Er, Yb, Pu and mixtures thereof; and said one or more multi-functional ligands comprising a head group that comprises a material selected from the group consisting of thiols, amines, phosphonic acids, alkoxysilanes, halosilanes, carboxylic acids, nitriles, and mixtures thereof; said liquid metal encapsulate network comprising a linkage having the formula:
*—X—R—X—*

wherein for said formula each * represents the chemical attachment point to a core shell liquid metal encapsulate; each X represents a molecular segment selected from the group of chemical structures comprising C—S, C—N, C—P—O, C—Si—O, O—Si—O, C—O; and R represents a molecular segment independently selected from the group of chemical structures comprising C—C, C═C, C—S—C, N—N—N, C—N, O—C—N, C—O—C, Si—O—Si.

2. The method of claim 1 comprising wherein said applying, encapsulating, connecting and/or making comprises ink jet printing, aerosol jet printing, screen printing, gravure, blade coating, solution casting, spin coating, direct ink writing, extruding and combinations thereof.

3. The method of claim 2 wherein liquid metal encapsulate network is photopatterned.

4. The method of claim 3 wherein said photopatterning selectively activates the liquid metal encapsulate network and/or changes at least one portion of said liquid metal encapsulate network.

5. The method of claim 1 wherein liquid metal encapsulate network is photopatterned.

6. The method of claim 5 wherein said photopatterning selectively activates the liquid metal encapsulate network and/or changes at least one portion of said liquid metal encapsulate network.

Assignees

• Us Gov Air Force
• Us Air Force

Inventors

• Tabor Christopher E
• Thrasher Carl J
• Watson Alexander M
• Morris Nicholas J
• Farrell Zachary J

Classifications

• H01P3/00

  Waveguides; Transmission lines of the waveguide type · CPC title

• H01B1/02

  mainly consisting of metals or alloys · CPC title

• H01B1/12

  organic substances {(organic macromolecular compounds or compositions C08)} · CPC title

• B01J13/08 Primary

  Simple coacervation, i.e. addition of highly hydrophilic material {(combined with spraying B01J13/043; combined with mechanical division B01J13/04)} · CPC title

• H01Q1/00

  Details of, or arrangements associated with, antennas (arrangements for varying orientation of directional pattern H01Q3/00) · CPC title