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Biomimetic Contact Behavior Inspired Tactile Sensing Array with Programmable Microdomes Pattern by Scalable and

Xiaoliang Chen1,2,3, Yizhuo Luo1,2, Yun Chen1

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Researchers developed a programmable flexible sensor array inspired by octopus tentacles. This biomimetic design offers high stability, customizability, and consistency for applications like human-computer interaction and medical rehabilitation.

Keywords:
embeddedflexible sensing arraymultistage microstructureoctopus‐inspiredprogrammable

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Area of Science:

  • Materials Science
  • Biomimetics
  • Sensor Technology

Background:

  • Flexible sensor arrays are crucial for human-computer interaction but face challenges in performance, programmability, and array consistency.
  • Existing technologies struggle to create high-performance, programmable sensor units and scale them into consistent multi-pixel arrays.

Purpose of the Study:

  • To propose a novel programmable multistage dome structure-based flexible sensing array.
  • To achieve robust sensing stability, high array consistency, and customizable sensing properties.
  • To demonstrate the array's potential in medical rehabilitation applications.

Main Methods:

  • A biomimetic multistage dome structure inspired by octopus antennae was designed and fabricated.
  • Scalable, high-precision imprinting technologies were used to create multi-pixel arrays with embedded conductive layers.
  • A braced isolation structure was incorporated to enhance anti-crosstalk performance.

Main Results:

  • The sensor array demonstrated high sensitivity and a large pressure range, tunable by adjusting the dome structure arrangement.
  • The imprinting process ensured excellent stability, maintaining performance over 22,000 cycles.
  • The array exhibited effective anti-crosstalk performance with a crosstalk coefficient of 26.62 dB.

Conclusions:

  • The proposed programmable multistage dome structure offers a viable solution for high-performance, stable, and consistent flexible sensor arrays.
  • The biomimetic design and advanced manufacturing enable customization for specific applications, such as detecting human musculation in medical rehabilitation.