Technical Brief

Liquid Metal Based Stretchable Radiation-Shielding Film

[+] Author and Article Information
Yueguang Deng

Department of Biomedical Engineering,
School of Medicine,
Tsinghua University,
Beijing 100084, China

Jing Liu

Department of Biomedical Engineering,
School of Medicine,
Tsinghua University,
Beijing 100084, China;
Beijing Key Lab of Cryo-Biomedical Engineering and
Key Lab of Cryogenics,
Technical Institute of Physics and Chemistry,
Chinese Academy of Sciences,
Beijing 100190, China
e-mail: jliubme@tsinghua.edu.cn

1Corresponding author.

Manuscript received September 3, 2014; final manuscript received November 23, 2014; published online January 12, 2015. Assoc. Editor: Rafael V. Davalos.

J. Med. Devices 9(1), 014502 (Mar 01, 2015) (4 pages) Paper No: MED-14-1236; doi: 10.1115/1.4029317 History: Received September 03, 2014; Revised November 23, 2014; Online January 12, 2015

We reported a stretchable and flexible radiation-shielding film based on room-temperature liquid metal. Conceptual experiments showed that the liquid metal based printing technology can achieve an ultrathin flexible radiation-shielding film with a thickness of 0.3 mm. Moreover, the yield strength and ultimate strength of the liquid metal film appear much better than those of a conventional lead-particle-containing radiation-shielding material. In order to evaluate the radiation-shielding performance of the liquid metal material, X-ray radiation experiments to compare the liquid metal film and conventional lead-particle-based shielding material under different stretching conditions were performed. The results indicate that the liquid metal shielding film could achieve a certain radiation-shielding performance. Furthermore, because of the screen-printing properties of liquid metal, a low-cost X-ray mask method using a liquid metal selective radiation-shielding film was also studied, which could serve as a highly efficient and practical method for the medical X-ray shielding applications or semiconductor lithography industry.

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Fig. 1

(a) Conventional lead-rubber flexible radiation-shielding material. (b) Liquid metal based ultrathin radiation-shielding material.

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Fig. 2

Platform for radiation-shielding experiments

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Fig. 3

Stretching elongation percentages of conventional lead rubber and liquid metal shielding material under different stretching forces

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Fig. 4

Comparison of tension limits of lead-rubber and liquid metal shielding materials

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Fig. 5

Comparison of X-ray photographs of silicon film (a) uncoated with liquid metal and (b) coated with liquid metal

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Fig. 6

Comparison of radiation-shielding performances of lead-rubber and liquid metal materials under different stretching conditions

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Fig. 7

(a) Liquid metal based screen-printed selective X-ray shielding film and (b) related X-ray radiation photograph




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