Biochemical sensitive detector for surface plasma

A surface plasmon and detection device technology, which is applied in the field of biochemical sensing and detection, can solve the problems of large full width at half maximum of the resonance curve, only the quality factor is reached, and the sensitivity of the refractive index is small. The effect of high sensitivity

Active Publication Date: 2010-07-21
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even for triangular and prismatic structures, this type of resonance curve has a large full width at half maximum (60-100nm), and the refractive index sensitivity is also small, only 10-30nm / RIU, making the quality factor only reach 0.2-1, or even smaller, so the sensing sensitivity is lower

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
  • Biochemical sensitive detector for surface plasma
  • Biochemical sensitive detector for surface plasma
  • Biochemical sensitive detector for surface plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Such as figure 1 Shown is the general structure diagram of the surface plasmon biochemical sensing and detection device in Example 1 of the present invention. It consists of a sample test bench 1, a metal nanostructure substrate 2, a semi-transparent and semi-reflective cubic mirror 4, a polarizer 6, a filter 7, a collimating mirror 8, an illumination fiber 9, a light collecting mirror 10, and a xenon lamp light source 11 , condenser 13, monochromator 14, photomultiplier tube 16, signal processing digital converter 17, computer part 18, tested biochemical sample 19, XY scanning table 20 and scanning drive controller 21. The xenon lamp light source 11 , the collecting mirror 10 and the illuminating fiber 9 form an illuminating system for illuminating the measured biochemical sample 19 , and are placed above the collimating mirror 8 . The collimating mirror 8, optical filter 7, polarizer 6 and half-reflective cubic mirror 4 placed in sequence below make the illumination ...

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
thicknessaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to view more

Abstract

A biochemical sensing-detection device of surface plasma is composed of test bed, metal nanostructure substrate, semi-transmission semi-reflection mirror, polarizer, collimator, illumination optical fiber, light collection mirror, xenon-lamp light source, focusing mirror, monochromator, photoelectric multiplier tube, signal-treatment digital converter, biochemical sample to be detected, XY scanning bed, scan driving controller and computer. Its detecting method is also disclosed.

Description

technical field [0001] The invention relates to a surface plasma biochemical sensing and detection device, which belongs to the technical field of biochemical sensing and detection. Background technique [0002] With the continuous advancement of optical technology and nanostructure processing technology, traditional optical technology has been developed and extended to surface plasmon optics. The properties of surface plasmons on metal nanostructures have been deeply studied and revealed. It is found that electromagnetic fields can excite free electrons on the surface of metal nanostructures. Resonance is generated. For a certain incident light frequency range, the coupling resonance between light and surface free electrons has strong near-field localization and spectral selective absorption. This resonance mode is very sensitive to the change of the refractive index of the medium around the metal structure. Due to this characteristics, so that it can be applied in the fiel...

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 Patents(China)
IPC IPC(8): G01N21/41G01N21/55G01N33/50G06F19/00G01N21/552
Inventor 陈旭南罗先刚李海颖
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap