Tunable Resonances from Conductively Coupled Plasmonic Nanorods
US-2015247803-A1 · Sep 3, 2015 · US
Programmable assembly and welding of metallic nanoparticles into discrete nanostructures
US10464169B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10464169-B2 |
| Application number | US-201715455577-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 10, 2017 |
| Priority date | Mar 11, 2016 |
| Publication date | Nov 5, 2019 |
| Grant date | Nov 5, 2019 |
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Abstract
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Metallic nanorods are welded together in a controllable fashion. A suspension of metallic nanorods coated with an anionic polymer is contracted with linking molecules each comprising a liquid crystal with at least two available carboxylic acid moieties. The nanoparticles to self-assemble into dimers. Irradiation of the dimers with femtosecond radiation forms a metallic junction between them and welds the dimers into fused dimers.
First claim
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What is claimed is: 1. A method of welding metallic nanorods, comprising: providing a suspension of metallic nanorods coated with an anionic polymer; then contacting with nanorods with linking molecules each comprising a liquid crystal with at least two available carboxylic acid moieties; then allowing the nanoparticles to self-assemble into dimers, then irradiating the dimers with femtosecond radiation, thereby forming a metallic junction therebetween and welding the dimers into fused dimers having a charge transfer plasmon (CTP) absorbance peak. 2. The method of claim 1 , further comprising irradiating the fused dimers at the CTP absorbance peak to form nanostructures larger than the fused dimers. 3. The method of claim 1 , further comprising re-introducing linking molecules after said irradiating, then irradiating again. 4. The method of claim 1 , wherein the nanorods are gold. 5. The method of claim 1 , wherein said anionic polymer is poly(acrylic acid) and said linking molecules are disodium chromoglycate.
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Classifications
Manufacture or treatment of nanostructures · CPC title
- B23K26/32Primary
taking account of the properties of the material involved · CPC title
Bonding two or more elements · CPC title
using ultrashort pulses, i.e. pulses of 1 ns or less · CPC title
Coherent waves, e.g. laser beams (lasers per se H01S3/00) · CPC title
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- What does patent US10464169B2 cover?
- Metallic nanorods are welded together in a controllable fashion. A suspension of metallic nanorods coated with an anionic polymer is contracted with linking molecules each comprising a liquid crystal with at least two available carboxylic acid moieties. The nanoparticles to self-assemble into dimers. Irradiation of the dimers with femtosecond radiation forms a metallic junction between them and…
- Who is the assignee on this patent?
- Us Gov Sec Navy
- What technology area does this patent fall under?
- Primary CPC classification B23K26/32. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 05 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).