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Method for preparing films with anisotropic light enhanced transmission property

An anisotropic, thin-film technology, applied in the field of preparation of asymmetric semi-cone-shell nanohole array membranes, can solve few problems such as asymmetric three-dimensional nanohole array research work, and achieve the effect of simple operation

Inactive Publication Date: 2014-06-25
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current work is focused on symmetric 3D nanohole arrays, and there is little work on asymmetric 3D nanohole arrays.

Method used

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  • Method for preparing films with anisotropic light enhanced transmission property
  • Method for preparing films with anisotropic light enhanced transmission property
  • Method for preparing films with anisotropic light enhanced transmission property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: the preparation of hydrophilic glass sheet

[0024] The glass sheet used was cut to 2.5cm long and 3.5cm wide with a glass knife, put into a mixed solution of concentrated sulfuric acid and hydrogen peroxide (volume ratio 7:3) and heated to 80°C in a water bath, and kept for 5 hours to obtain the Water glass flakes; pour the mixed solution into a waste liquid bottle, wash the obtained glass flakes with deionized water for 3 to 5 times, and dry them with nitrogen.

Embodiment 2

[0025] Embodiment 2: the preparation of photoresist film

[0026] Collagen photoresist solution (BP212-37, positive photoresist, purchased from Beijing Kehua Microelectronics Materials Co., Ltd.) was spin-coated at a speed of 3000rpm for 30 seconds with a desktop coater, and then spin-coated onto the hydrophilic treated glass Then place it in an oven at 100°C for aging treatment for 0.5 hours, take it out and leave it at room temperature, so as to obtain a photoresist film with a thickness of 2 μm on the substrate.

Embodiment 3

[0027] Embodiment 3: Preparation of hydrophobic polystyrene microspheres

[0028] At room temperature, add 3 mL of deionized water to 1 mL of 5 wt % polystyrene microsphere dispersion with a diameter of 700 nm, centrifuge at 6000 rpm for 5 minutes, absorb the supernatant, and add 3 mL of deionized water and centrifuged again, after which the process was repeated 7 times. After absorbing the supernatant for the last time, add 1mL of ethanol and 1mL of deionized water to the solid matter, centrifuge at 6000rpm for 5 minutes, absorb the supernatant, and then add the same ethanol and deionized water to the remaining solid matter The mixed solution of water was centrifuged in the same way, and the centrifugation process was repeated 16 times. After the supernatant was drawn for the last time, 1 mL of ethanol and 1 mL of deionized water were finally added to the solid to obtain a hydrophobic 10wt% polystyrene microsphere. Dispersion of spheres in ethanol and deionized water.

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Abstract

The invention provides a method for preparing films with anisotropic light enhanced transmission property, and belongs to the technical field of film materials. The method relates to the masking etching technology, the physical vapor deposition technology and some technologies on the aspect of assembling. The overall operation is simple and convenient, and the process is low in consumption, clean and high in controllability. Through control over etching time and conditions, semi-cone shells of different heights and nano-pores of different sizes can be prepared. Asymmetric semi-cone-shell and nano-pore array films which are prepared through the method are low in cost, and have an effect of anisotropic optical enhanced transmission, the transmission strength can be greatly changed by changing the incidence direction, quick-response optical switches can be manufactured, and the films can be applied to novel anisotropic plasma resonance sensors.

Description

technical field [0001] The invention belongs to the technical field of film materials, and in particular relates to a preparation method of an asymmetric semi-cone-shell nanohole array film with anisotropic light-enhanced transmission properties. Background technique [0002] Porous membranes have become an important part of numerous plasmonic structures due to their important potential applications in optical devices [1] . A periodic array of holes, or a structure with periodic indentations around a single hole, allows light to resonate on one side of the hole and then decoupled on the other side. This resonance mechanism produces diverse resonance peaks and higher transmittance (transmission intensity compared to the ratio of pores to the entire film). This is the "extraordinary transmission of light (EOT)" that is contrary to the traditional hole theory. For better application, the effects of various parameters, such as material, size, and shape, on the EOT phenomenon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11B82Y40/00G02B1/111
Inventor 张刚艾斌王立敏
Owner JILIN UNIV
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