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Preparation method of nanocolumn array paper and application thereof

A nano-pillar array and template technology, applied in applications, sensors, catheters, etc., can solve the problems of single function, poor sensitivity stability, and reduced sensitivity, and achieve the effects of simple preparation method, good use value, and high sensitivity

Active Publication Date: 2019-02-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of wearable sensors commercialized at present, including flexible sensors and wearable electronic products, but there are still many problems in wearable sensors, such as poor contact between the substrate and human skin, which affects the stable acquisition and transmission of signals, thereby reducing the Sensitivity of detection
In addition, the existing wearable sensors are mainly focused on tracking personal physical activity (heart rate and steps) signal collection, and cannot detect human biochemical indicators (pH, lactic acid, urea, ions, etc.)
At present, the existing wearable biosensors have the problems of single function and poor sensitivity stability, which limits their wide application in daily life. Therefore, there is an urgent need for accurate and sensitive sensors to detect related indicators, and such sensors need to be functionalized. material as base

Method used

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  • Preparation method of nanocolumn array paper and application thereof
  • Preparation method of nanocolumn array paper and application thereof
  • Preparation method of nanocolumn array paper and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method (such as figure 1 shown), the method includes the following steps:

[0044] 1) Select a single-pass anodized aluminum oxide (AAO) template with a pore diameter of 20nm, a pore spacing of 60nm, and a pore depth of 500nm. After cleaning the single-pass anodized aluminum template with acetone and ethanol, perform plasma surface treatment on its surface, the treatment conditions For: power 100W, time 300s;

[0045] 2) Infuse the precursor solution of the nanocolumn array paper into the treated single-pass anodized aluminum template, that is, the nitrocellulose (NC) precursor solution (7.5%, w / v, acetone), and dry it at 50°C;

[0046] 3) The AAO template was corroded with 4% hydrofluoric acid, cleaned and dried naturally at room temperature to obtain NC paper with nanopillar arrays.

[0047] A kind of application that has nanocolumn array paper, this has nanocolumn array paper and is applied to fast detection, and its method is as follows:

[...

Embodiment 2

[0054] A preparation method with nano-column array paper, the method comprises the following steps:

[0055] 1) Select a single-pass anodized aluminum oxide (AAO) template with a pore size of 100nm, a pore spacing of 150nm, and a film thickness of 500nm. After cleaning the single-pass anodized aluminum template with acetone and ethanol, perform plasma surface treatment on its surface with a power of 150W, processing time is 200s;

[0056] 2) Infuse the precursor of nanopillar array paper, polymethyl methacrylate (PDMS, 10:1, w / w), into the treated single-pass anodized aluminum template, and dry it at 60°C;

[0057] 3) The AAO template was corroded with 4% phosphoric acid, washed and dried naturally at room temperature to obtain NC paper with nanopillar arrays.

[0058] A kind of application that has nanocolumn array paper, this has nanocolumn array paper and is applied to wearable sensor, and its method is as follows:

[0059] Step 1. Fix the PVDF piezoelectric sensor used f...

Embodiment 3

[0064] A preparation method with nano-column array paper, the method comprises the following steps:

[0065] 1) Select a single-pass anodized aluminum oxide (AAO) template with a pore size of 200nm, a pore spacing of 300nm, and a film thickness of 50 μm. After cleaning the single-pass anodized aluminum template with acetone and ethanol, perform plasma surface treatment on its surface with a power of 200W, processing time is 100s;

[0066] 2) Infuse the precursor solution of nanopillar array paper into the treated single-pass anodized aluminum template, that is, polymethylmethacrylate (PMMA) precursor solution (10%, w / v, chloroform), and dry at 70°C forming;

[0067] 3) The AAO template was etched with 4% sodium hydroxide, washed and dried naturally at room temperature to obtain NC paper with nanopillar arrays.

[0068] A kind of application that has nanocolumn array paper, this has nanocolumn array paper and is applied to fast detection, and its method is as follows:

[006...

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Abstract

The invention discloses a preparation method of nanocolumn array paper and an application thereof. The method comprises the following steps: 1) selecting a single-pass anodic aluminum oxide template,cleaning the single-pass anodic aluminum oxide template with acetone and ethanol, and performing plasma surface treatment on the surface; and 2) filling a precursor solution of nanocolumn array paperinto the treated single-pass anodic aluminum oxide template, drying and molding the precursor solution, corroding the single-pass anodic aluminum oxide template, and cleaning, thereby obtaining the nanocolumn array paper. The nanocolumn array paper prepared by the method has tight skin fitness, also has multivariate analysis ability, is capable of realizing multivariate analysis of multiple to-be-tested objects when applied to the field of rapid detection, is also capable of obviously improving the sensor sensitivity when applied to the field of wearable sensors, and has the advantages of being low in cost, capable of being repeatedly used and high in sensitivity.

Description

technical field [0001] The invention relates to a preparation method and application of paper with nano-column arrays, and belongs to the field of paper functionalization. Background technique [0002] With the development of modern society, people attach great importance to the acquisition of various health indicators. Wearable sensors have attracted widespread attention because of their characteristics of being attached to the human body and monitoring and collecting human health signals in real time. Wearable sensors have the characteristics of small size, high integration, multi-function, high sensitivity and strong stability. There are many kinds of wearable sensors commercialized at present, including flexible sensors and wearable electronic products, but there are still many problems in wearable sensors, such as poor contact between the substrate and human skin, which affects the stable acquisition and transmission of signals, thereby reducing the Sensitivity of dete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/50G01N27/12G01N21/64A61B5/02A61B5/00
CPCA61B5/02A61B5/6802A61B2562/02G01N21/6428G01N27/12G01N33/50
Inventor 顾忠泽高兵兵何珍珠
Owner SOUTHEAST UNIV
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