中国物理B ›› 2024, Vol. 33 ›› Issue (3): 34211-034211.doi: 10.1088/1674-1056/ad12a9

• • 上一篇    下一篇

Estimating the yield stress of soft materials via laser-induced breakdown spectroscopy

Shuhang Gong(龚书航)1,†, Yaju Li(李亚举)1,2,3,†, Dongbin Qian(钱东斌)1,2,3,‡, Jinrui Ye(叶晋瑞)1,2,3, Kou Zhao(赵扣)1,2,3, Qiang Zeng(曾强)2,3,§, Liangwen Chen(陈良文)1,2,3, Shaofeng Zhang(张少锋)1,2,3, Lei Yang(杨磊)1,2,3, and Xinwen Ma(马新文)1,2,3   

  1. 1 Advanced Energy Science and Technology, Guangdong Laboratory, Huizhou 516000, China;
    2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2023-10-10 修回日期:2023-12-01 接受日期:2023-12-06 出版日期:2024-02-22 发布日期:2024-03-06
  • 通讯作者: Dongbin Qian, Qiang Zeng E-mail:qiandb@impcas.ac.cn;zeng.qiang@impcas.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300) and the National Natural Science Foundation of China (Grant Nos. U2241288 and 11974359).

Estimating the yield stress of soft materials via laser-induced breakdown spectroscopy

Shuhang Gong(龚书航)1,†, Yaju Li(李亚举)1,2,3,†, Dongbin Qian(钱东斌)1,2,3,‡, Jinrui Ye(叶晋瑞)1,2,3, Kou Zhao(赵扣)1,2,3, Qiang Zeng(曾强)2,3,§, Liangwen Chen(陈良文)1,2,3, Shaofeng Zhang(张少锋)1,2,3, Lei Yang(杨磊)1,2,3, and Xinwen Ma(马新文)1,2,3   

  1. 1 Advanced Energy Science and Technology, Guangdong Laboratory, Huizhou 516000, China;
    2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2023-10-10 Revised:2023-12-01 Accepted:2023-12-06 Online:2024-02-22 Published:2024-03-06
  • Contact: Dongbin Qian, Qiang Zeng E-mail:qiandb@impcas.ac.cn;zeng.qiang@impcas.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300) and the National Natural Science Foundation of China (Grant Nos. U2241288 and 11974359).

摘要: Taking three typical soft samples prepared respectively by loose packings of 77-, 95-, and 109-μm copper grains as examples, we perform an experiment to investigate the energy-dependent laser-induced breakdown spectroscopy (LIBS) of soft materials. We discovered a reversal phenomenon in the trend of energy dependence of plasma emission intensity: increasing initially and then decreasing separated by a well-defined critical energy. The trend reversal is attributed to the laser-induced recoil pressure at the critical energy just matching the sample's yield strength. As a result, a one-to-one correspondence can be well established between the samples' yield stress and the critical energy that is easily obtainable from LIBS measurements. This allows us to propose an innovative method for estimating the yield stress of soft materials via LIBS with attractive advantages including in-situ remote detection, real-time data collection, and minimal destructive to sample.

关键词: laser-induced breakdown spectroscopy, soft materials, yield stress

Abstract: Taking three typical soft samples prepared respectively by loose packings of 77-, 95-, and 109-μm copper grains as examples, we perform an experiment to investigate the energy-dependent laser-induced breakdown spectroscopy (LIBS) of soft materials. We discovered a reversal phenomenon in the trend of energy dependence of plasma emission intensity: increasing initially and then decreasing separated by a well-defined critical energy. The trend reversal is attributed to the laser-induced recoil pressure at the critical energy just matching the sample's yield strength. As a result, a one-to-one correspondence can be well established between the samples' yield stress and the critical energy that is easily obtainable from LIBS measurements. This allows us to propose an innovative method for estimating the yield stress of soft materials via LIBS with attractive advantages including in-situ remote detection, real-time data collection, and minimal destructive to sample.

Key words: laser-induced breakdown spectroscopy, soft materials, yield stress

中图分类号:  (Laser spectroscopy)

  • 42.62.Fi
83.60.La (Viscoplasticity; yield stress) 78.70.-g (Interactions of particles and radiation with matter)