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A method for preparing metal quasi-nano-lattice and the product obtained

A nanocrystal, gold standard technology, applied in the field of materials, can solve the problems of limiting the multi-functional application of nanolattice materials, material selection limitations, low nanolattice efficiency, etc., to achieve excellent mechanical properties and energy absorption capacity, material types The effect of large selection and uniform feature size selection range

Active Publication Date: 2022-04-26
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the efficiency of preparing nano-lattices by the above method is extremely low. Taking the most advanced two-photon lithography technology as an example, it takes tens of hours to prepare a micron-scale sample frame, and then obtain nano-lattices of specific materials through post-processing , not only the operation is complex and time-consuming, but also the selection of materials is greatly limited, so it is almost impossible to use this method to prepare large-scale practical nanolattice samples. The most important reason why materials are still difficult to use practically
In addition, studies have shown that the strength of nanoscale metals can reach theoretical strength, and they also have excellent performance in thermal, electrical and other aspects, but the preparation of metal nanolattice materials is still a huge challenge, which has also become a limitation of nanolattice materials. Important Factors for Multifunctional Applications

Method used

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  • A method for preparing metal quasi-nano-lattice and the product obtained
  • A method for preparing metal quasi-nano-lattice and the product obtained
  • A method for preparing metal quasi-nano-lattice and the product obtained

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Embodiment 1

[0045] Embodiment 1, the preparation method of the gold quasi-nano-lattice with 117 ± 4 nm feature size

[0046] The method for preparing the gold quasi-nano-lattice with 117 ± 4 nm characteristic size provided by the present invention comprises the following steps:

[0047] 1) Ta ion irradiation was carried out on a polycarbonate (PC) film with a thickness of 30 μm. During irradiation, the angle between the ion beam and the film plane was 45°, and the irradiation fluence was 1×10 9 ×4ions / cm 2 (i.e., irradiate 4 times, each time 1×10 9 ions / cm 2 ) to obtain an ion track film irradiated by heavy ions;

[0048] 2) UV light sensitization on both sides of the obtained PC ion tracker film irradiated by heavy ions for 2 hours each;

[0049]3) Put the sensitized PC ion track film into 50℃, 5mol / L NaOH solution for chemical etching for 5min40s;

[0050] 4) Sputter a layer of gold with a thickness of about 20nm on one side of the etched polymer film;

[0051] 5) Electrochemical...

Embodiment 2

[0054] Embodiment 2, the preparation method of the gold quasi-nano-lattice with 86 ± 4 nm feature size

[0055] The method for preparing the gold quasi-nano lattice with 86 ± 4 nm characteristic size provided by the present invention comprises the following steps:

[0056] 1) See step 1 of Example 1);

[0057] 2) See step 2 of Example 1);

[0058] 3) Put the sensitized PC ion track film into 50℃, 5mol / L NaOH solution for chemical etching for 3min57s;

[0059] 4) See step 4 of Example 1);

[0060] 5) Electrochemical deposition of copper substrate on the gold-sprayed side of the gold-sprayed polymer film, the composition of the copper electrolyte used is 75g / l Cu 2 SO 4 ·5H 2 O+30 g / l H 2 SO 4 , the deposition voltage is 0.5V, and the deposition time is 1h; on the other side, metal gold is electrochemically deposited, and the composition of the gold electrolyte used is 75 g / l Na 3 Au(SO 3 ) 2 , the deposition voltage is 1.3 V, 15 s; -0.25 V, 5 s pulse electrodeposition...

Embodiment 3

[0063] Embodiment 3, the preparation method of the gold quasi-nano-lattice with 69 ± 4 nm feature size

[0064] The method for preparing a gold quasi-nano-lattice with a characteristic size of 69 ± 4 nm provided by the present invention comprises the following steps:

[0065] 1) See step 1 of Example 1);

[0066] 2) See step 2 of Example 1);

[0067] 3) Put the sensitized PC ion track film into 50℃, 5mol / L NaOH solution for chemical etching for 2min36s;

[0068] 4) See step 4 of Example 1);

[0069] 5) Electrochemical deposition of copper substrate on the gold-sprayed side of the gold-sprayed polymer film, the composition of the copper electrolyte used is 75g / l Cu 2 SO 4 ·5H 2 O+30 g / l H 2 SO 4 , the deposition voltage is 0.5V, and the deposition time is 1h; on the other side, metal gold is electrochemically deposited, and the composition of the gold electrolyte used is 75 g / l Na 3 Au(SO 3 ) 2 , the deposition voltage is 1.3 V, 15 s; -0.25 V, 5 s pulse electrodeposit...

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Abstract

The invention discloses a method for preparing a metal quasi-nanometer lattice and a prepared product. The metal quasi-nano lattice prepared by the ion track template method of the present invention has the following advantages: the minimum characteristic size can reach 30 nm; the preparation method has one-time molding, no post-processing, and high efficiency; it can be prepared in a large area; material type selection Many; the feature size selection range is wide and uniform; the surface of the micro-column is smooth and has few defects. The metal quasi-nano lattice prepared by the method has excellent mechanical properties and energy absorption capacity.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a method for preparing a metal quasi-nano lattice and a prepared product. Background technique [0002] Since the 21st century, nanoporous materials, especially porous nanolattices (nanolattices) through structural optimization, have aroused strong research interests of scientists from all over the world. This structural material with a characteristic size of hundreds or even tens of nanometers, thanks to the material size effect and three-dimensional structure design, exhibits a variety of excellent properties that traditional materials do not have, so it is often called "metamaterials". Nanolattice is expected to become an excellent material with high performance, multifunctional and lightweight structures in the future, which can be applied in many fields. At present, the method of preparing three-dimensional nano-lattice is mainly through photochemical high-resolution additive manufac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/02C23C14/20C23C14/34
CPCC23C14/02C23C14/021C23C14/205C23C14/34
Inventor 段敬来程宏伟刘杰胡正国孙友梅姚会军莫丹陈永辉王玥
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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