CN1800913A - Method for forming three-dimensional color pattern inside transparent SiO2 gel - Google Patents
Method for forming three-dimensional color pattern inside transparent SiO2 gel Download PDFInfo
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- CN1800913A CN1800913A CNA2006100234160A CN200610023416A CN1800913A CN 1800913 A CN1800913 A CN 1800913A CN A2006100234160 A CNA2006100234160 A CN A2006100234160A CN 200610023416 A CN200610023416 A CN 200610023416A CN 1800913 A CN1800913 A CN 1800913A
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- gel
- laser
- dimensional color
- color pattern
- laser beam
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- Luminescent Compositions (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a method to form three-dimensional color pattern in the transparent SiO2 gel. Wherein, focusing the laser beam with impulse width as femtosecond to nanosecond and light power density larger than 1*106w/cm2 on the gel inner doped Ag+, Au+ and Cu2+; separating metal nano particle, and producing opposite multicolor coloring; producing multicolor light by radiating the glass with ultraviolet light. This invention has variable figures and wide application.
Description
Technical field
The present invention relates to three-dimensional color pattern, particularly a kind of transparent SiO
2The inner method that forms the three-dimensional colour space pattern of gel specially refers to and utilizes nanosecond (1 * 10
-9Second) to femtosecond (1 * 10
-15Second) pulsed laser action is in transparent SiO
2The inner method that forms the three-dimensional colour space pattern of gel.
Background technology
Transparent material is glittering and translucent, and is very popular.If portion prepares space pattern within it, then not only can be used as handicraft with appreciating, and might be as the material of functionalization device, as optical storage, photoswitch etc.
Formerly in the technology, inventors such as Chen Ting provide a kind of and utilize pulse width (Chinese patent: ZL97234928.6), the destruction (breakdown) of utilizing laser beam and glassy phase interaction to cause causes bursts the solid figure of a little lining up for yttrogarnet (YAG) laser instrument of nanosecond.Generally burst a little is the crackle of tens to several thousand microns.Owing to bursting a little dispersing of visible light is white in color.Yet this method can not form colored space pattern.
Summary of the invention
The objective of the invention is provides a kind of transparent SiO in order to overcome the deficiency in the above-mentioned technology formerly
2The inner method that forms the three-dimensional colour space pattern of gel,
Technical solution of the present invention is as follows:
A kind of transparent SiO
2The inner method that forms the three-dimensional colour space pattern of gel is characterized in that pulse width is focused in the gel that is doped with metallic ion by the laser of femtosecond to nanosecond, separates out nano-metal particle, and specific practice is:
1. prepare and select the transparent SiO of doping gold, silver, copper, platinum and/or palladium ion
2Gel media;
2. selecting the output laser pulse width is 1 * 10
-13Second is to 1 * 10
-8The laser instrument of second, its laser beam is through after focusing on, and the optical power density on the focal spot is greater than 1 * 10
6W/cm
2
3. described laser beam is focused on the SiO that contains above-mentioned doping metals composition
2Laser radiation is carried out in gel inside, writes the 3 D stereo pattern;
4. at room temperature placed 1～5 month or 80～130 ℃ of annealing 0.5～15 hour through the gel sample after the laser radiation above-mentioned;
Essence of the present invention is:
Adopt pulse width when laser during to nanosecond, laser to be shone the transparent SiO of the metallic ions such as Ag, Au, Cu that mixed after optical lens focusing by the femtosecond broadening
2In the gel,,, all can separate out the space in the zone of laser radiation and chromatic effect with metal nanoparticle and the relevant therewith colour of generation that controllable size distributes as pulse energy, pulse width, irradiation time etc. by changing the illuminate condition of laser.The present invention can be used for the formation of 3 D multi-colour pattern, and minimum and controlled its space periodicity distributes because of the nano-metal particle dimension of separating out again, therefore might be used for the three-dimensional light storage of super-high density and three-D photon crystal etc.
The key of the inventive method is to adopt the gel of the laser radiation of focusing to the function metallic ion that mixed, and makes near the laser spot because the nonlinear interaction of laser and medium causes reduction of metal ion.As
Ag
++ e
-→ Ag
0Provide the source of electronics to can be ion or the dielectric material of mixing altogether.Because the mobile generation of metallic atoms such as Au, Ag, Cu, platinum and palladium is reunited, and forms the micelle and even the nano particle of corresponding metal.By regulating laser irradiation condition, the Size Distribution of may command metal nanoparticle.Because its Size Distribution is depended in the surface plasma bulk absorption of metal nanoparticle, therefore can be a painted adjusting of the inner realization of gel that contains luminescent center of the same race.
But the kind of precipitating metal nano particle comprises: Au, Ag, Cu, Pt, Pd.Laser pulse width is 100 femtoseconds (100 * 10
-15Second) to 10 nanoseconds (10 * 10
-9Second); Laser action point light intensity＞1 * 10
6W/cm
2Laser action point area (being focal spot area) can be contracted to 0.2 μ m.
Compare the SiO that contains above-mentioned metallic ion that the inventive method can be adopted in the present invention with technology formerly
2Utilize laser radiation to form three-dimensional color pattern in the gel sample.
Description of drawings
Fig. 1 by among the present invention the gel of employing doping gold ion, be letter " P " the shape pattern that the metal nanoparticle that obtains after the laser irradiation of 10 nanoseconds constitutes with pulse width.
Embodiment
The invention will be further described with following embodiment, so that to the understanding of the present invention and advantage thereof.
Embodiment 1
According to above-mentioned specific practice＜1〉gel sample of preparation doping gold ion;＜2〉selecting laser pulse width is that 100fs, wavelength are that the laser beam of 800nm, the pulsed frequency of laser are 1KHz;＜3〉carry out laser radiation with three-dimensional mobile platform and computer control.In air, placed 1-5 individual month or, promptly can be observed the sample interior red pattern 30～130 ℃ of annealing 0.5～15 hour.Regulate the laser power and the time of irradiation, pattern color can change in color gamuts such as dark red, purple and yellow.
Embodiment 2
According to above-mentioned specific practice:＜1〉select the transparent SiO of doping gold ion
2Gel sample;＜2〉selecting with 532nm wavelength, 10ns (nanosecond) pulsewidth, repetition frequency is neodymium-doped yttrium-aluminum garnet (Nd:YAG) the double-frequency laser irradiation of 50Hz;＜3〉write letter " P " shape pattern with three-dimensional mobile platform and computer software control laser beam.The average power of laser is 10mW, and the pattern that writes is colourless, and after placing for 1～May, color changes redness gradually into.The result as shown in Figure 1.
Embodiment 3
According to above-mentioned specific practice:＜1〉select the gel sample of silver-doped ion;＜2〉object lens of selecting 20 times (NA=0.46) for use with wavelength be femtosecond laser (pulsewidth 200fs, pulsed frequency 200KHz, the average power 100mW) focusing radiation of 800nm to gel inside, go into monogram, pattern gray at the inner carving of gel.Placed through 1～5 month or 30～130 ℃ of annealing after 0.5～15 hour, pattern color changes into faint yellow.Under transmission electron microscope, observe and show and separated out silver nano-grain.Flaxen color is due to the surface plasma bulk absorption of Ag nano particle.
Embodiment 4
According to above-mentioned specific practice:＜1〉gel sample of select to mix with fixed attention platinum and palladium ion;＜2〉select for use the laser focusing of pulsewidth 120fs, 800nm wavelength, frequency 1KHz to shine, average laser power 300mW is with 10 times of (NA=0.30) object lens focusing laser beam.＜3〉write monogram with three-dimensional mobile platform and computer controlled controlling laser beam.The pattern gray that writes was placed through 1～5 month or 30～130 ℃ of annealing after 0.5～15 hour, pattern color changes black into.
Claims (2)
1, a kind of transparent SiO
2The inner method that forms three-dimensional color pattern of gel is characterized in that pulse width is focused in the gel that is doped with metallic ion by the laser beam of femtosecond to nanosecond, separates out nano-metal particle.
2, transparent SiO according to claim 1
2The inner method that forms three-dimensional color pattern of gel is characterized in that the specific practice of this method is:
1. prepare and select to be doped with the transparent SiO of gold, silver, copper, platinum or palladium ion
2Gel media;
2. selecting the output laser pulse width is 1 * 10
-13Second is to 1 * 10
-8The laser instrument of second, its laser beam is through after focusing on, and the optical power density on the focal spot is greater than 1 * 10
6W/cm
2
3. described laser beam is focused on and contain the described SiO that mixes metallic ion
2Laser radiation is carried out in gel inside, writes the 3 D stereo pattern;
4. at room temperature placed 1～5 month or 80～130 ℃ of annealing 0.5～15 hour through the gel sample after the laser radiation above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100234160A CN1800913A (en) | 2006-01-18 | 2006-01-18 | Method for forming three-dimensional color pattern inside transparent SiO2 gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100234160A CN1800913A (en) | 2006-01-18 | 2006-01-18 | Method for forming three-dimensional color pattern inside transparent SiO2 gel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1800913A true CN1800913A (en) | 2006-07-12 |
Family
ID=36811017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100234160A Pending CN1800913A (en) | 2006-01-18 | 2006-01-18 | Method for forming three-dimensional color pattern inside transparent SiO2 gel |
Country Status (1)
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335532A (en) * | 2019-05-30 | 2019-10-15 | 南京萃智激光应用技术研究院有限公司 | A method of it is anti-fake using long phosphorescence |
-
2006
- 2006-01-18 CN CNA2006100234160A patent/CN1800913A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335532A (en) * | 2019-05-30 | 2019-10-15 | 南京萃智激光应用技术研究院有限公司 | A method of it is anti-fake using long phosphorescence |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |