Liquid metal encapsulates having non-native shells

Patent metadata

Field	Value
Publication number	US-11062817-B1
Application number	US-202016925668-A
Country	US
Kind code	B1
Filing date	Jul 10, 2020
Priority date	Jul 12, 2019
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

The present invention relates to core shell liquid metal encapsulates comprising and processes of making and using such encapsulates and networks. The shell(s) of such encapsulates employ a palette of materials having widely varied band structures and/or the desired spin pairing and/or bond polarization. Such encapsulates can be designed to respond to one or more stimuli of choice, including but not limited to electromagnetic, thermal, mechanical, photonic, and/or magnetic and are environmentally robust.

First claim

What is claimed is:

1. An encapsulate comprising:
a) a liquid metal core, said liquid metal core comprising at least one of:
(i) Hg, In, Ga and mixtures thereof, or
(ii) an alloy comprising Hg, Sn, In, Ga and mixtures thereof; and at least one of Pb, Sb, Cd, Bi, Al, Zn, Ag, Au, or Tl;

b) one or more shells that encapsulate said liquid metal, said one or more shells comprising a first shell comprising:
(i) a two dimensional material, said two dimensional material being selected from the group consisting of graphene oxide, graphene, modified graphene, modified graphene oxide, boron nitride, modified boron nitride, transition metal dichalcogenides, transition metal tri-chalcogenides, clays, MXenes, and mixtures thereof; or
(ii) a charge neutral ceramic comprising an anion and a cation, each anion being independently selected from the group consisting of O, N, F, P, S, and each cation being independently select 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,
with the provisos that when said cation is Ga, In and/or Sn, said encapsulate comprises a second shell selected from a ceramic, a two dimensional material selected from the group consisting of graphene oxide, graphene, modified graphene, modified graphene oxide, boron nitride, modified boron nitride, transition metal dichalcogenides, transition metal tri-chalcogenides, clays, MXenes, and mixtures thereof, or a ceramic and a two dimensional material selected from the group consisting of graphene oxide, graphene, modified graphene, modified graphene oxide, boron nitride, modified boron nitride, transition metal dichalcogenides, transition metal tri-chalcogenides, clays, MXenes, and mixtures thereof, that when said liquid metal core is Hg, said encapsulate's first shell comprises a two dimensional material selected from the group consisting of graphene oxide, graphene, modified graphene, modified graphene oxide, boron nitride, modified boron nitride, transition metal dichalcogenides, transition metal tri-chalcogenides, clays, MXenes, and mixtures thereof, and when said encapsulate's core consists of Ga and In, said encapsulate comprises a first shell encapsulating said core, said first shell consisting of amorphous gallium oxide, and a second shell encapsulating said first shell, said second shell consisting of silica, said encapsulate's Ga and In core is a 85.8 atom % Ga and 14.2 atom % In core.

2. The encapsulate of claim 1 comprising:
a) a liquid metal core, said liquid metal core comprising at least one of:
(i) In, Ga and mixtures thereof; or
(ii) an alloy comprising at least one of In or Ga, and at least one of Bi, Pb, Cd, or Sb;

b) one or more shells that encapsulate said liquid metal, said one or more shells comprising a first shell comprising:
(i) a two dimensional material, said two dimensional material being selected from the group consisting of graphene oxide, graphene, modified graphene, modified graphene oxide, boron nitride, modified boron nitride, transition metal dichalcogenides, transition metal tri-chalcogenides, clays, MXenes, and mixtures thereof; or
(ii) a charge neutral ceramic comprising an anion and a cation, each anion being independently selected from the group consisting of O, N, F, P, and S and each cation being independently select 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.

3. The encapsulate of claim 2 comprising:
a) a liquid metal core, said liquid metal core comprising at least one of:
(i) In, Ga and mixtures thereof; or
(ii) an alloy comprising at least one of In or Ga, and at least one of Bi or Sb;

b) one or more shells that encapsulate said liquid metal, said one or more shells comprising a first shell comprising:
(i) a two dimensional material, said two dimensional material being selected from the group consisting of graphene oxide, modified graphene oxide, transition metal dichalcogenides, clays and mixtures thereof; or
(ii) a charge neutral ceramic comprising an anion and a cation, each anion being independently selected from the group consisting of O, N, and F, and each cation being independently selected from the group consisting of Ga, In, Sn, Al, Zn, Sc, Ti, Cr, Zr, Nb, Gd, Nd, Sm and mixtures thereof.

4. The encapsulate of claim 3 comprising:
a) a liquid metal core, said liquid metal core comprising at least one of Ga, In and mixtures thereof;
b) one or more shells that encapsulate said liquid metal, said one or more shells comprising a first shell comprising:
(i) a two dimensional material, said two dimensional material being selected from the group consisting of graphene oxide, modified graphene oxide and mixtures thereof; or
(ii) a charge neutral ceramic comprising an anion and a cation, said anion being O and said cation is independently selected from the group consisting of Ga, In, Sn, Al, Zn, Gd, Nd and mixtures thereof.

5. The encapsulate according to claim 2 wherein:
a) said modified graphene is selected from the group consisting of:
(i) a graphene surfactant mixture;
(ii) graphene comprising a functional group that comprises oxygen;
(iii) graphene comprising a functional group that comprises sulfur;
(iv) graphene comprising a functional group that comprises nitrogen;

b) said modified graphene oxide is selected from the group consisting of:
(i) reduced graphene oxide;
(ii) graphene oxide comprising a functional group that comprises sulfur;
(ii) graphene oxide comprising a functional group that comprises nitrogen;

c) said modified boron nitride is selected from the group consisting of:
(i) a boron nitride surfactant mixture;
(ii) boron nitride comprising a functional group that comprises oxygen;
(iii) boron nitride comprising a functional group that comprises sulfur;
(iv) boron nitride comprising a functional group that comprises nitrogen;

d) said transition metal dichalcogenides are transition metal dichalcogenides wherein said transition metal is selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo, W, Tc, Re, Co, Rh, Ir, Ni, Pd, Pt and said dichalcogenides are selected from the group consisting of S, Se and Te;
e) said transition metal trichalcogenides are transition metal trichalcogenides wherein said transition metal is selected from the group consisting of Ti, Zr, Hf, Nb, Ta, and said trichalcogenides are selected from the group consisting of S, Se and Te;
f) said clay is selected from the group consisting of vermiculite, kaolin, cloisite, montmorillonite, bentonite, laponite, and mixtures thereof; and
g) said MXenes are MXenes that comprise C or N; and a transition metal selected from the group consisting of Sc, Ti, V, Cr, Zr, Nb, Mo, Hf and Ta.

6. The encapsulate according to claim 5 wherein:
a) said modified graphene is selected from the group consisting of:
(i) a graphene surfactant mixture;
(ii) graphene comprising a functional group selected from the group consisting of carboxylates, alcohols, ketones, carbonyls, or epoxides;
(iii) graphene comprising a functional group selected from the group consisting of sulfonates, thiols, and mixtures thereof;
(iv) graphene comprising a functional group selected from the group consisting of amines, azides and mixtures thereof;

b) said modified graphene oxide is selected from the group consisting of:
(i) reduced graphene oxide;
(ii) graphene oxide comprising a functional group selected from the group consisting of sulfonates, thiols, and mixtures thereof;
(iii) graphene oxide comprising a functional group selected from the group consisting of amines, azides and mixtures thereof;

c) said modified boron nitride is

Assignees

• Us Gov Air Force
• Us Air Force

Inventors

• Tabor Christopher E
• Farrell Zachary J
• Morris Nicholas J
• Creighton Megan A

Classifications

• H01B1/02 Primary

  mainly consisting of metals or alloys · CPC title

• C23C26/00

  Coating not provided for in groups C23C2/00 - C23C24/00 · CPC title