IP Library › Granted Patent US 7,462,496
Granted Patent B2
US 7,462,496 · App. 11/065,612 · Granted Dec 9, 2008

Plasmon-enhanced marking of fragile materials and other applications thereof

Assignee: American Environmental System, Inc.
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,462,496
App. No.
11/065,612
Granted
Dec 9, 2008
Kind
B2
Abstract

The methods and applications of a surface plasmon resonance-enhanced marking technique are disclosed. The technique uses surface plasmon resonance (SPR) excited nanoparticles and a surface plasmon resonance source in nonlinear interactions with nearby chemical substances and medium for marking purposes. The SPR-enhanced absorption and fluorescence rates of chemical substances or medium and nonlinearity of SPR interactions with chemical substances or medium make the proposed method suitable for marking fragile materials including biomaterials, such as writing on thin plastic foils or DNA-protein crosslinking. The marking method can also be applied to a three-dimensional recording and read out information system with subwavelength resolutions, coding information of secrete documents, drug delivery, tissue surgery, tattoo writing or removal, photodynamic therapy, cosmetic and dermatological treatment.

Claims (16)

1. A method for surface plasmon resonance enhanced marking of a medium selected from the group consisting of a solid-state material, a human body, an animal body, or plant comprising the steps of:

providing a composition capable of marking the medium when the composition is irradiated by radiation from a plasmon source, the composition comprising a nanoparticle and a marking substance, wherein the marking substance is attached to the nanoparticle;

embedding the composition into the medium; and

irradiating the embedded composition by the plasmon source.

2. The method of claim 1 , wherein said nanoparticle is made of a metal, metal oxide, metal dioxide, metallic salt, intermetallic alloy, transition metal, electric conductor, electric superconductor, electric semiconductor, electric semiconductor doped with metal, quantum dot, dielectric, alkaline earth metal, earth rare element, carbon nanotube, aerogel metal composition, or doped metal composition.

3. The method of claim 2 , wherein said metal is selected from the group consisting of silver, ruthenium, platinum, palladium, cobalt, rhenium, rhodium, osmium, iridium, copper, aluminum, aluminum alloy, zinc, nickel, chromium, magnesium, tungsten, iron, palladium, gold, titanium, selenium, cadmium, vanadium, molybdenum.

4. The method of claim 1 , wherein the nanoparticle has a size within a range of 0.1 nm to 500,000 nm in at least one of its dimensions.

5. The method of claim 4 , wherein said nanoparticle is a thin film, colloid, fiber, nanoisland, nanowire, nanotube, empty shell, shell filled with a conducting material, shell filled with a dielectric material, or shell filled with a semiconductor material.

6. The method of claim 1 , wherein the nanoparticle is a non-coated nanoparticle or the nanoparticle is a coated nanoparticle with at least one of the following coating substances: semiconductor, conductor, organic substance, biological substance, liquid crystal, inorganic substance, polymer, light sensitive polymer, environmentally sensitive polymer, recognitive material, biorecognitive material, chemical ligand, immunolabels, or phage display.

7. The method of claim 1 , wherein the marking substance is selected from the group of: organic substance, inorganic substance, biological substance, drug, stain, or fluorescence dye.

8. The method of claim 7 , wherein the biological substance is an oligonucleotide, DNA, RNA, protein, amino acid, lipid, peptide, or biomolecule.

9. The method of claim 1 , wherein the nanoparticle is a single-type nanoparticle or a plurality of nanoparticles.

10. The method of claim 1 , wherein the plasmon source is a single electromagnetic energy source or a multiple electromagnetic energy source.

11. The method of claim 10 , wherein the electromagnetic energy source is selected from the group consisting of: a laser with single wavelength, laser with plurality wavelengths, semiconductor laser, pulsed laser, CW laser, Q-switched laser, light emitting diode, lamp, organic light emitting diode, X-Rays source, chemiluminescence source, fluorescence source, sun light source, or electroluminescence source.

12. The method of claim 11 , wherein said electromagnetic energy source has a wavelength or wavelengths within a range of 0.001 nm to 200,000 nm.

13. The method of claim 1 , wherein the plasmon source is irradiating the embedded composition in a one-photon mode, two-photon mode, multi-photon mode, two-wavelength two-photon mode, step-wise mode, up-conversion mode, harmonic generation mode, two-wavelength two-photon step-wise mode, evanescence mode, or plurality of optical excitation modes.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 4, 2015
From: SPR ADVANCED TECHNOLOGIES, INC.
To: AMERICAN ENVIRONMENTAL SYSTEMS, INC.
Reel/Frame 036248/0667 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME PREVIOUSLY RECORDED AT REEL: 036248 FRAME: 0667. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Aug 4, 2015
From: AMERICAN ENVIRONMENTAL SYSTEMS, INC.
To: SPR ADVANCED TECHNOLOGIES, INC.
Reel/Frame 036283/0814 →
Continuity (6)
Continuation In Part 1093060800 · Sep 1, 2004
Continuation In Part 1091656000 · Aug 12, 2004
Continuation In Part 1068996500 · Oct 22, 2003
Continuation In Part 1065662900 · Sep 8, 2003
Provisional Application 6058988300 · Jul 22, 2004
Related Publication 20050142605A1 · Jun 30, 2005