Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for enhancing fluorescence intensity of gold nanosphere

A technology of gold nanospheres and fluorescence intensity, which is applied in the field of nanomaterials and optics, can solve the problems of difficult industrial production, limited enhancement effect, and high cost, and achieve the effects of low cost, enhanced effect, and improved diagnostic accuracy

Active Publication Date: 2019-04-12
SHANXI UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have certain limitations. For example, the acquisition of dimers requires precise operation of large-scale scientific instruments, which is expensive, complicated to operate, and difficult to be used in industrial production; and the addition of other noble metals has limited enhancement effect on the fluorescence of gold nanoparticles. Can only increase the fluorescence intensity of gold nanoparticles by 20 times

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for enhancing fluorescence intensity of gold nanosphere
  • Method and device for enhancing fluorescence intensity of gold nanosphere
  • Method and device for enhancing fluorescence intensity of gold nanosphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0026] A method for enhancing the fluorescence intensity of gold nanospheres in this embodiment comprises the following steps:

[0027] 1) Preparation of agglomerated gold nanosphere sample 4:

[0028] A piece of cover glass was taken, washed with acetone, potassium hydroxide and deionized water respectively, and the gold nanosphere solution was spin-coated on the cover glass by spin coating method to prepare agglomerated gold nanosphere sample.

[0029] The thickness of the cover glass is 0.17 mm.

[0030] The gold nanospheres are prepared by a seed-mediated growth method, the obtained gold nanospheres have a diameter of about 160 nanometers, and the optical density of the gold nanosphere solution used for spin coating is 0.005.

[0031] The specific parameters of the spin-coating method are: 1. first spin-coating with a speed of 500 rpm for 10 seconds; 2. then spin-coating with a speed of 2000 rpm for 20 seconds; Second.

[0032] figure 2 The transmission electron micro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
wavelengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of nano materials and optics, and discloses a method for enhancing the fluorescence intensity of a gold nanosphere. A continuous laser focuses on the agglomerated gold nanosphere particles (4) having a diameter of 150 to 170 nm to excite the agglomerated gold nanosphere particles (4) to obtain a gold nanosphere fluorescence. The gold nanosphere fluorescence increases as the laser irradiation time increases, the best enhancement effect is obtained when the laser irradiation time is 4.5 seconds, and then the gold nanosphere fluorescence decreases as the laser irradiation time increases. The invention further relates to a device for enhancing the fluorescence intensity of an agglomerated gold nanosphere by continuous laser irradiation. According to the method and the device for enhancing the fluorescence intensity of the gold nanosphere, the agglomerated gold nanosphere are irradiated with a near-ultraviolet continuous laser, so that adjacent gold nanospheres generate a welding effect under photothermal effects, and then generate a strong localized surface plasmon enhancement effect, thereby enhancing the fluorescence intensity of the gold nanosphereby more than 150 times.

Description

technical field [0001] The invention belongs to the field of nanomaterials and optics, and specifically relates to a method and a device for enhancing the fluorescence intensity of agglomerated gold nanospheres irradiated by continuous laser light. Background technique [0002] Noble metal nanoparticles, such as gold nanospheres, have unique physical and chemical properties, such as excellent photothermal properties, excellent stability, biological non-toxicity, efficient catalytic properties and biocompatibility, making them widely used in many fields. have a wide range of applications. In particular, the localized surface plasmon enhancement effect of gold nanoparticles enables it to greatly enhance the linear and nonlinear optical responses of materials adjacent to gold nanoparticles (usually around 10 nanometers), and has been applied on the surface Enhanced Raman spectroscopy, two-photon fluorescence, double frequency acquisition and other scientific research and daily...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/64G01N2021/6417
Inventor 秦成兵张晓荣张国锋高岩陈瑞云肖连团贾锁堂
Owner SHANXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com