Graphene membrane repair
View Patent ↗Technologies described herein are generally related to systems and processes for repairing a graphene membrane on a support. A chamber may receive a layer of graphene on a support. The layer of graphene may include a hole. A first container including an initiator may be effective to apply an initiator through the hole to the support to functionalize the support and produce an initiator layer on the support. A second container including an activator may be effective to apply an activator through the hole to the initiator layer to activate the initiator layer. The application of the activator may further be effective to grow a polymer from the initiator layer. The growth of the polymer may be effective to produce a polymer plug in the hole and effective to repair at least a portion of the layer of graphene.
1. A method for repairing graphene, the method comprising:
receiving, by a chamber, a layer of graphene on a support, wherein the layer of graphene includes a hole;
applying an initiator through the hole to the support, wherein the application of the initiator functionalizes the support to produce an initiator layer on the support;
applying an activator through the hole to the initiator layer, wherein the application of the activator activates the initiator layer; and
growing a polymer from the initiator layer using the activator, wherein the growth of the polymer produces a polymer plug in the hole.
2. The method of claim 1 , wherein the initiator includes a brominated silanol or a brominated thiol.
3. The method of claim 1 , further comprising forming the initiator by:
adding about one part by volume brominated silanol to about ten parts by volume methanol into a container to form a first mixture;
stirring the first mixture for a time interval in a first range of about one minute to about ten minutes;
adding about eight nine parts by volume of de-ionized water to form a second mixture; and
stirring the second mixture at a temperature in a second range of about 30 degrees Celsius to about 50 degrees Celsius for a time interval in a third range of about 45 minutes to about 75 minutes.
4. The method of claim 1 , further comprising: after applying the initiator, washing the layer of graphene with methanol to remove at least some of the initiator from the layer of graphene.
5. The method of claim 1 , further comprising:
removing part of the support to form a cutout region;
wherein the polymer plug extends above an upper surface of the layer of graphene and below a lower surface of the layer of graphene and into the cutout region of the support.
6. The method of claim 1 , further comprising applying iron chloride to a region of the support effective to form a cutout region.
7. The method of claim 1 , wherein the support comprises one or more of copper, nickel, silica, alumina, or a polymer.
8. The method of claim 1 , wherein the activator comprises one or more of styrene, toluene, copper chloride, copper bromide, and/or bipyridine.
9. The method of claim 1 , wherein growing the polymer comprises one or more of an atom-transfer-radical polymerization, a ring opening metatheses polymerization and/or an anionic polymerization.
10. The method of claim 1 , wherein the activator comprises one or more of a vinyl, styryl, acrylate, and/or acrylamide.