Ultralow stress sensors with ultrahigh sensitivity have an urgent need for micro-pressure measurement in aerospace, industrial automation and biomedical inventions. In this paper, a new method of ultrahigh sensitivity micro stress sensing is proposed near the exceptional point (EP) of parity-time symmetric systems theoretically. The EP is determined via the adjustment of the distance and the gain of the double ring resonators in the parity-time symmetric system, in which one ring resonator is embedded on the cantilever beam served as the sensing element. The cantilevers are characterized using finite element simulation software for their stress-deformation sensitivity by applying surface stress loads, which present a relation for the stress-deformation sensitivity of the cantilever beam. By introducing the hole in the cantilever beam, the sensitivity of the stress sensor of the structure can be improved by about 5 times compared to the cantilever beam structure without the hole....

中文翻译：

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奇偶时间对称系统异常点附近的超高灵敏度应力传感方法

具有超高灵敏度的超低应力传感器迫切需要在航空航天，工业自动化和生物医学发明中进行微压测量。本文从理论上提出了一种在奇偶时间对称系统异常点附近的超高灵敏度微应力传感新方法。通过在奇偶时间对称系统中调节双环谐振器的距离和增益来确定EP，其中，一个环谐振器嵌入在用作传感元件的悬臂梁上。悬臂通过有限元模拟软件通过施加表面应力载荷来表征其应力变形敏感性，从而表现出悬臂梁的应力变形敏感性。通过在悬臂梁中引入孔，