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In-situ monitoring and sensing device for photothermal modification of gold nanostructures and its fabrication and measurement methods

A gold nanostructure and sensing device technology, which is applied in the field of optical real-time monitoring devices and sensing devices for real-time monitoring of the photothermal modification process of gold nanostructures, which can solve the problem of lagging sensing means and inability to reflect light in real time and in situ Problems such as thermal process modification effect, to achieve the effect of less material consumption, extremely high material consumption and high sensitivity

Active Publication Date: 2021-12-17
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, so far, the sensing means for real-time tracking of the photothermal process are still relatively lagging behind, and cannot reflect the allosteric effect of the photothermal process in real time and in situ.

Method used

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  • In-situ monitoring and sensing device for photothermal modification of gold nanostructures and its fabrication and measurement methods
  • In-situ monitoring and sensing device for photothermal modification of gold nanostructures and its fabrication and measurement methods
  • In-situ monitoring and sensing device for photothermal modification of gold nanostructures and its fabrication and measurement methods

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Embodiment 1

[0034] Optical fiber sensing technology uses optical fiber physical media with a scale of hundreds of microns and light waves as information carriers. It has the advantages of low cost, compact structure, high sensitivity, remote monitoring, corrosion resistance, and strong biocompatibility. It has become the fastest growing in recent years. one of the sensing technologies. The most representative one is the micro-nano optical fiber interferometer sensor developed in recent years. In addition to the characteristics of conventional optical fiber sensors, this type of optical fiber sensor can also use the evanescent wave mode that is sensitive to the surrounding environment, not only The detection objects are greatly enriched, and the measurement accuracy is also improved. It has very broad application prospects in the field of biochemical material detection.

[0035] Such as figure 1 As shown, this embodiment provides an in-situ monitoring and sensing device for photothermal ...

Embodiment 2

[0039] Such as figure 1As shown, this embodiment provides a method for manufacturing an in-situ monitoring and sensing device for photothermal modification of gold nanostructures. Shaped micro-nano optical fiber interferometer 1 is used as an optical fiber sensing probe and is fused with a single-mode optical fiber; the optical fiber sensing probe is soaked in the gold nanostructure dispersion 2; the light source 4 is input into the tapered micro-nano optical fiber interferometer 1, The light source 4 passes through the tapered micro-nano fiber interferometer 1 to form an interference wave, and the temperature change caused by the photothermal effect of the gold nanostructure 3 is monitored by using the evanescent wave on the surface of the tapered micro-nano fiber 1 that is sensitive to changes in the external environment . Specifically include the following steps:

[0040] R1. Draw the photosensitive optical fiber on the flame into a tapered micro-nano fiber interferometer...

Embodiment 3

[0044] This embodiment discloses a measurement method for in-situ monitoring and sensing devices based on photothermal modification of gold nanostructures

[0045] P1. Input the broadband light in the 1250-1650nm band as a light source into the tapered micro-nano fiber interferometer 1, pass through the tapered micro-nano fiber interferometer 1, excite the interference light, and emit it on the surface of the tapered micro-nano fiber interferometer 1 form an evanescent wave;

[0046] P2. Irradiate the gold nanostructure dispersion liquid with laser light in the 750-950nm band to trigger the photothermal effect of the gold nanostructure 3. Since the evanescent wave on the surface of the tapered micro-nano fiber interferometer 1 is sensitive to the temperature change of the external environment, the optical fiber interference The position of the interference peak in the spectrum changes, and the temperature change process of the surrounding gold nanostructure is monitored in rea...

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Abstract

The invention discloses a sensing device for real-time monitoring of the photothermal modification process of a gold nanostructure and a production and measurement method. The device includes a tapered micro-nano optical fiber interferometer and a gold nanostructure dispersion liquid; a tapered micro-nano optical fiber interferometer The transition zone and the homogeneous zone form an interference structure, and the tapered micro-nano fiber interferometer is used as a fiber sensing probe and is fused with a single-mode fiber; the fiber sensing probe is immersed in the dispersion liquid containing gold nanostructures; the gold is irradiated with a laser Nanostructure dispersion liquid, and the light source is input into the micro-nano fiber interferometer, and the evanescent wave on the surface of the tapered micro-nano fiber interferometer is sensitive to changes in the external environment. Temperature changes generated during the process are monitored. The invention not only greatly reduces the cost, but also realizes the in-situ monitoring of the photothermal modification process of the gold nanostructure by utilizing the characteristics of the small volume of the optical fiber sensing probe.

Description

technical field [0001] The invention relates to an optical real-time monitoring device and method, in particular to a sensing device and a manufacturing and measuring method for real-time monitoring of a gold nanostructure photothermal modification process, belonging to the field of optical sensing technology design. Background technique [0002] In recent years, gold nanostructures, as a typical material with photothermal effect, have been extensively studied in recent years. In addition to gold nanostructures, two-dimensional materials represented by graphene and its derivatives have also received extensive attention for their photothermal properties. After combining graphene with gold nanostructures, photothermal materials with better performance than single components can be obtained. In recent years, transition metal dichalcogenides (TMDCs) have emerged as another topological insulator and have also received extensive attention. As one of them, molybdenum disulfide ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 黄赟赟肖翱翔关柏鸥
Owner JINAN UNIVERSITY
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