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Photonic crystal micro-nano structure direct-writing method based on metal nanoparticles

A metal nanoparticle and photonic crystal technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems that limit the wide application of metal photonic crystals and the development of practical technologies, the preparation process is complicated, and the preparation equipment is expensive, so as to improve the adhesion. And the effect of firmness, good repeatability and high preparation efficiency

Inactive Publication Date: 2015-03-04
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these preparation methods have problems such as complex preparation process, expensive preparation equipment, low efficiency, and high cost, which greatly limit the wide application and practical technology development of metal photonic crystals.

Method used

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  • Photonic crystal micro-nano structure direct-writing method based on metal nanoparticles
  • Photonic crystal micro-nano structure direct-writing method based on metal nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Preparation of a one-dimensional gold nanowire photonic crystal structure.

[0018] 1) dissolving the chemically synthesized gold nanoparticles with an average diameter of 5nm in organic solvents such as toluene or xylene to make a gold nanoparticle colloid solution with a concentration of 100 mg / ml;

[0019] 2) Spin-coat the colloidal solution of gold nanoparticles on the glass substrate. The spin coating speed is 2000rpm, and the corresponding film thickness is about 200nm;

[0020] 3) Place the gold thin film sample prepared above in the interference light path, such as figure 1 As shown, the angle between the two beams is θ=7.8°. Using manual triggering to make the laser emit a laser pulse with an energy of 10mJ, a pulse width of 6ns, and a wavelength of 266nm, a periodic grating structure can be etched on the gold nanoparticle film. composed of gold nanoparticles.

[0021] 4) Place the above-mentioned grating structure on a heating plate and heat it ...

Embodiment 2

[0024] On the basis of the embodiment, the sample is rotated 90° around its normal, and then subjected to the second exposure and ablation, and then undergoes step 4) heat treatment to realize the preparation of the two-dimensional metal nano-grating structure.

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Abstract

The invention discloses a photonic crystal micro-nano structure direct-writing method based on metal nanoparticles, which belongs to the technical field of nano optoelectronic materials and nano optoelectronic devices. By using a chemically compounded metal nanoparticle colloid, a new preparation technology of a one-dimensional or two-dimensional metal photonic crystal is realized by a UV pulse laser interference burning technology and a heat processing process. The method has the advantages of low cost, high efficiency, and the like, and can be used for preparing metal photonic crystals in a large area.

Description

technical field [0001] The invention belongs to the technical field of nano-optoelectronic materials and devices, and relates to directly writing period-controllable metal photonic crystal structures on metal nanoparticle colloidal films by using an ultraviolet laser interference ablation method. Background technique [0002] Periodically arranged metal nanowires, metal nanocolumns or metal nanohole structures are usually called metal photonic crystals. The electromagnetic wave incident on the metal photonic crystal will cause the collective oscillation of electrons in the metal, resulting in particle plasmon resonance or localized surface plasmon resonance, which is characterized by a strong characteristic extinction spectrum in photophysics, mainly including plasmon resonance absorption and light There are two physical mechanisms for scattering. Using the coupling effect of particle plasmon resonance and the periodic structure of metal photonic crystals, new optoelectroni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/136
Inventor 张新平庞兆广刘红梅
Owner BEIJING UNIV OF TECH
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