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Production of organic compound nanoparticles with high repetition rate ultrafast pulsed laser ablation in liquids
US8992815B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992815-B2 |
| Application number | US-95149610-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 22, 2010 |
| Priority date | Feb 10, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Disclosed is a method of producing a chemically pure and stably dispersed organic nanoparticle colloidal suspension using an ultrafast pulsed laser ablation process. The method comprises irradiating a target of an organic compound material in contact with a poor solvent with ultrashort laser pulses at a high repetition rate and collecting the nanoparticles of the organic compound produced. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beam, an organic compound target in contact with a poor solvent, and a solvent circulating system to cool the laser focal volume and collect the produced nanoparticle products. By controlling various laser parameters, and with optional poor solvent flow movement, the method provides stable colloids of dispersed organic nanoparticles in the poor solvent in the absence of any stabilizing agents.
First claim
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We claim: 1. A method for producing a nanoparticle colloidal suspension of organic material dispersed in a poor solvent liquid, the method comprising steps of: irradiating a shaped bulk target of an organic compound material with an ultrashort pulsed laser beam having a pulse duration of 500 picoseconds or less and a pulse repetition rate of 10 kHz to 100 MHz, the target mounted during said irradiating over a flow cell holding the liquid so that at least a portion of the target is…
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- B01J13/0086Primary
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
- B82Y40/00Primary
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US8992815B2 cover?
- Disclosed is a method of producing a chemically pure and stably dispersed organic nanoparticle colloidal suspension using an ultrafast pulsed laser ablation process. The method comprises irradiating a target of an organic compound material in contact with a poor solvent with ultrashort laser pulses at a high repetition rate and collecting the nanoparticles of the organic compound produced. The …
- Who is the assignee on this patent?
- Hu Zhendong, Che Yong, Imra America Inc
- What technology area does this patent fall under?
- Primary CPC classification B01J13/0086. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 31 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).