A super-resolution fluorescence microscopy imaging device based on the photoabsorption modulation characteristics of azobenzene polymer

A technology of super-resolution fluorescence and absorption modulation, applied in the field of super-resolution optical imaging, can solve problems such as low stability, limited resolution, and easy damage, and achieve the effect of simple and compact structure, high resolution, and simple structure

Inactive Publication Date: 2016-04-13
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0004] 2. The stability is not high
High-precision equipment such as near-field optical probes are easily damaged and need to be replaced regularly
[0005] 3. Limitations
The improvement of resolution by confocal microscopy is relatively limited; commonly used scanning probe microscopy techniques such as atomic force microscopy can only provide surface relief images of solid samples; stimulated emission fluorescence quenching microscopy techniques need to obtain high resolution Ultrashort pulse light source is required, and the pulse emission time should be precisely controlled

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  • A super-resolution fluorescence microscopy imaging device based on the photoabsorption modulation characteristics of azobenzene polymer
  • A super-resolution fluorescence microscopy imaging device based on the photoabsorption modulation characteristics of azobenzene polymer
  • A super-resolution fluorescence microscopy imaging device based on the photoabsorption modulation characteristics of azobenzene polymer

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings, in which the same reference numerals always represent the same components.

[0030] refer to figure 1A super-resolution fluorescence microscope based on the photoabsorption modulation characteristics of azobenzene polymer is shown, including: optical detector 1, optical filter 2, first beam splitter 3, second beam splitter 4, high numerical value Aperture oil immersion microscope objective lens 5, refractive index matching oil 6, sample, 532nm laser light source 10, first beam expander lens group 11, 355nm laser light source 12, second beam expander lens group 13, helical phase film 14; wherein, the sample The measured sample layer is made of a glass substrate, an azobenzene polymer film, and a fluorescent molecular marker. The preparation process is to spin coat a layer of azobenzene polymer film with a thickness of about 300 nm on the glass substrate, dry it,...

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Abstract

The invention discloses a super-resolution fluorescence micro imaging device based on photoinduced absorption modulation characteristics of azobenzene polymer, a screw phase plate is utilized to shape a 355nm-wavelength laser into a hollow light beam; and the hollow light beam and a 532nm-wavelength light beam are combined and are simultaneously irradiated onto an azobenzene polymer film after being focused by a high-number-aperture oil immersion micro objective. The azobenzene film irradiated by the 355nm-wavelength laser has high absorptivity for the 532nm-wavelength laser; the 532nm-wavelength laser can penetrate through the azobenzene polymer film only at the middle hollow part of the 355nm-wavelength light beam, thereby exciting the fluorescence molecules on the film to emit light; and the fluorescence emitted by the sample is collected by the same objective and received by a detector. The hollow part after focusing the 355nm-wavelength light beam is subwavelength scale, and thus, can implement exciting light focused light spot beyond the diffraction limit on the detected sample; and thus, the fluorescence micro imaging of the whole sample beyond the diffraction limit can be implemented by point-by-point scanning.

Description

technical field [0001] The invention relates to the field of super-resolution optical imaging, in particular to a super-resolution fluorescence microscopic imaging device based on the photoabsorption modulation characteristics of azobenzene polymers. Background technique [0002] Microscopic technology is the most direct means for people to understand the microscopic world. Optical microscopy technology presents the image of the microscopic world directly in front of our eyes. It is the most intuitive and commonly used microscopic technology among all microscopic technologies. Restricted by the diffraction limit, the resolution can only reach the order of half a wavelength, which can no longer meet the resolution requirements of today's microscopes. In recent years, some super-resolution microscopy techniques have been proposed and matured. These super-resolution microscopy techniques mainly include confocal microscopy, scanning probe microscopy, stimulated emission fluoresc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
Inventor 朱良富张斗国陈漪恺韩璐王向贤王沛明海
Owner UNIV OF SCI & TECH OF CHINA
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